DA7218-00U32

DA7218 Ultra-low power stereo codec Company confidential General description DA7218 is a high-performance, low-power audio codec optimised for use in portable applications or wearable devices. It contains two analog microphone input paths, or up to four digital microphone input paths, or a combination of both. It also has a stereo DAC to headphone output path. DA7218 has ultra-low power operating modes to support always-on audio detect applications. DA7218 has single-ended headphone outputs with headphone detect for use in accessories, offering excellent left to right channel separation and common mode noise rejection. The other chip in this family, the DA7217 has differential headphone outputs without headphone detect, and has been designed for use inside headset devices. Key features ■ Shutdown mode offering current consumption ■ DAC digital filters with audio and voice mode during standby of 5 µA options, 5-band equaliser and five programmable biquad stages ■ Ability to differentiate between stereo and mono headsets ■ Automatic detection of headset removal and ■ Voice mode filtering up to 32 kHz ■ Flexible digital mixing from all seven inputs to confirmation of headset insertion all six outputs with independent gain on each mixer path ■ High performance microphone to ADC record path with a 105 dB dynamic range and 90 dB ■ SNR ■ Low-power always-on record mode with ■ Digital tone generator with built-in support for automatic level detection DTMF ■ Two low-noise microphone bias regulators ■ System controller for simplified, pop-free start- with programmable output voltage and ultralow power mode up and shutdown ■ Phase-locked loop with sample rate tracking ■ High performance stereo DAC to headphone playback path with 100 dB SNR and 110 dB dynamic range. supporting MCLK frequencies from 2 MHz to 54 MHz ■ Automatic tuning of on-chip reference ■ A high efficiency two-level, true-ground charge pump for generating class-G headphone supplies oscillator for clock-free operation in low-power modes ■ 4-wire digital audio interface with support for 2 ■ ADC digital filters with audio and voice mode ■ The headphone amplifier can be run directly 2 I S, four-channel I S, TDM and other audio formats options ■ Ability to run the ADCs at a different sample 2 rate to the DACs on a single I S interface ■ 2-wire I2C compatible control interface with from the supply, thus eliminating the need for charge pump capacitors ■ Dedicated low-latency digital sideband filter with three programmable biquad stages support for High Speed mode up to 3.4 MHz 24-bit data @ 96 kHz sample rate is supported Applications ■ Wireless headset applications ■ Headphone applications ■ Portable audio applications Datasheet ■ Portable gaming ■ Voice recorders ■ Tablets and eBooks Revision 2.3 1 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential System diagram Figure 1 - DA7218 with single-ended headset outputs Datasheet Revision 2.3 2 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Contents General description ............................................................................................................................. 1 Key features ......................................................................................................................................... 1 Applications ......................................................................................................................................... 1 System diagram ................................................................................................................................... 2 Contents ............................................................................................................................................... 3 1 Terms and definitions ................................................................................................................... 7 2 Block diagram ................................................................................................................................ 8 3 Pinout ............................................................................................................................................. 8 3.1 Input pins ............................................................................................................................. 10 3.1.1 Pin MIC1_P (DMIC1CLK) .................................................................................... 10 3.1.2 Pin MIC1_N (DMIC1IN) ....................................................................................... 10 3.1.3 Pin MIC2_P (DMIC2CLK) .................................................................................... 10 3.1.4 Pin MIC2_N (DMIC2IN) ....................................................................................... 10 3.1.5 Pin MCLK ............................................................................................................. 10 3.1.6 Pin SCL ................................................................................................................ 11 3.1.7 Pin AD .................................................................................................................. 11 3.1.8 Pin DATIN ............................................................................................................ 11 3.2 Output pins .......................................................................................................................... 11 3.2.1 Pin nIRQ .............................................................................................................. 11 3.2.2 Pin DATOUT ........................................................................................................ 11 3.3 Bi-directional pins ................................................................................................................ 11 3.3.1 Pin SDA ............................................................................................................... 11 3.3.2 Pin BCLK ............................................................................................................. 11 3.3.3 Pin WCLK ............................................................................................................ 11 3.4 Single-ended headphone pins ............................................................................................ 11 3.4.1 Pin HPL ................................................................................................................ 11 3.4.2 Pin HPR ............................................................................................................... 11 3.4.3 Pin GND_SENSE ................................................................................................ 11 3.4.4 Pin HPLDET ........................................................................................................ 12 3.5 Charge pump pins ............................................................................................................... 12 3.5.1 Pin HPCSP .......................................................................................................... 12 3.5.2 Pin HPCSN .......................................................................................................... 12 3.5.3 Pin HPCFP .......................................................................................................... 12 3.5.4 Pin HPCFN .......................................................................................................... 12 3.6 References .......................................................................................................................... 12 3.6.1 Pin VMID .............................................................................................................. 12 3.6.2 Pin DACREF ........................................................................................................ 12 3.6.3 Pin VREF ............................................................................................................. 12 3.6.4 Pin MICBIAS1 ...................................................................................................... 12 3.6.5 Pin MICBIAS2 ...................................................................................................... 12 3.6.6 Pin VDDDIG ......................................................................................................... 13 3.7 Supply pins .......................................................................................................................... 13 3.7.1 Pin VDD ............................................................................................................... 13 3.7.2 Pin VDD_IO ......................................................................................................... 13 Datasheet Revision 2.3 3 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 3.8 Company confidential 3.7.3 Pin VDD_MIC ...................................................................................................... 13 Ground pins ......................................................................................................................... 13 3.8.1 Pin GND ............................................................................................................... 13 3.8.2 Pin GND_CP ........................................................................................................ 13 4 Absolute maximum ratings ........................................................................................................ 14 5 Recommended operating conditions ........................................................................................ 14 6 Electrical characteristics ............................................................................................................ 15 7 Digital interfaces ......................................................................................................................... 22 8 Functional description ................................................................................................................ 26 8.1 Device operation ................................................................................................................. 26 8.1.1 Power modes ....................................................................................................... 26 8.1.1.1 STANDBY mode .............................................................................. 26 8.1.1.2 ACTIVE mode .................................................................................. 26 8.2 Input paths .......................................................................................................................... 27 8.2.1 Microphone inputs ............................................................................................... 27 8.2.1.1 Microphone biases........................................................................... 27 8.2.1.2 Microphone amplifier ....................................................................... 28 8.2.1.3 Digital microphones ......................................................................... 29 8.2.1.4 Input amplifiers ................................................................................ 30 8.2.2 Analog to digital converters ................................................................................. 30 8.2.2.1 High performance mode .................................................................. 31 8.2.2.2 Low-power mode ............................................................................. 31 8.2.2.3 Anti-alias filters ................................................................................ 31 8.3 Digital engine ...................................................................................................................... 31 8.3.1 Input processing .................................................................................................. 32 8.3.1.1 Input filters ....................................................................................... 32 8.3.1.2 High-pass filter ................................................................................. 35 8.3.1.3 Automatic level control..................................................................... 36 8.3.1.4 Input dynamic range extension ........................................................ 38 8.3.1.5 ALC and input DRE calibration ........................................................ 39 8.3.1.6 Level detection................................................................................. 39 8.3.2 Sidetone processing ............................................................................................ 39 8.3.3 Tone generator .................................................................................................... 42 8.3.4 System controller ................................................................................................. 42 8.3.5 Output processing ................................................................................................ 43 8.3.5.1 Output filters .................................................................................... 43 8.3.5.2 High-pass filter ................................................................................. 43 8.3.5.3 5-band equaliser .............................................................................. 45 8.3.5.4 5-stage biquad filter ......................................................................... 47 8.3.5.5 Output dynamic range extension ..................................................... 50 8.3.5.6 DAC noise gate................................................................................ 51 8.3.5.7 Digital mixer ..................................................................................... 51 8.3.5.8 Digital gain ....................................................................................... 54 8.4 Output paths ........................................................................................................................ 55 8.4.1 Digital to analog converter ................................................................................... 55 8.4.2 Headphone amplifiers .......................................................................................... 55 Datasheet Revision 2.3 4 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential 8.4.3 8.4.4 Headphone detection........................................................................................... 58 Jack detection ...................................................................................................... 58 8.4.4.1 Automatic MICBIAS1 control ........................................................... 58 8.4.5 Mono/stereo and load detection .......................................................................... 58 8.4.6 Charge pump control ........................................................................................... 59 8.4.7 Tracking the demands on the charge pump output ............................................. 60 8.4.7.1 cp_mchange = 00 (manual mode) ................................................... 60 8.4.7.2 cp_mchange = 01 (tracking the PGA gain setting) .......................... 60 8.4.7.3 cp_mchange = 10 (tracking the DAC signal setting) ....................... 60 8.4.7.4 cp_mchange = 11 (tracking the output signal magnitude) .............. 60 8.4.8 Specifying clock frequencies when tracking the charge pump output demand... 61 8.4.9 Other charge pump controls ................................................................................ 61 8.4.10 True-ground supply mode.................................................................................... 61 8.5 Phase locked loop ............................................................................................................... 61 8.5.1 PLL bypass mode ................................................................................................ 61 8.5.2 Normal PLL mode (DAI master) .......................................................................... 62 8.5.3 Example calculation of the feedback divider setting: ........................................... 63 8.5.4 Sample rate matching PLL mode (DAI slave) ..................................................... 64 8.5.5 MCLK input .......................................................................................................... 64 8.5.5.1 MCLK detection ............................................................................... 64 8.5.6 Audio reference oscillator .................................................................................... 64 8.5.6.1 Oscillator calibration ........................................................................ 64 8.5.6.2 Procedure for calibrating the reference oscillator ............................ 65 8.5.7 Internal system clock ........................................................................................... 65 8.6 Reference generation.......................................................................................................... 65 8.6.1 Voltage references ............................................................................................... 65 8.6.2 Bias currents ........................................................................................................ 65 8.6.3 Voltage levels ...................................................................................................... 65 8.6.3.1 Digital regulator................................................................................ 65 8.6.3.2 Digital input/output pins voltage level .............................................. 66 2 8.7 I C control interface ............................................................................................................. 66 8.8 Digital audio interface (DAI) ................................................................................................ 69 8.8.1 DAI channels ....................................................................................................... 70 8.8.2 DAI WCLK tristate mode...................................................................................... 71 8.9 Interrupt control ................................................................................................................... 71 8.9.1 Level detect events .............................................................................................. 71 8.9.2 Jack detect events ............................................................................................... 71 8.10 System settings ................................................................................................................... 72 8.10.1 Sample rate ......................................................................................................... 72 8.10.2 Gain ramp rate ..................................................................................................... 72 8.10.3 Program counter control ...................................................................................... 72 8.10.4 Soft reset ............................................................................................................. 72 9 Register maps and definitions ................................................................................................... 73 10 Package information ................................................................................................................. 159 11 External components ................................................................................................................ 160 12 Ordering information ................................................................................................................ 160 Datasheet Revision 2.3 5 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Appendix A Applications information ........................................................................................... 161 A.1 Codec initialisation ............................................................................................................ 161 A.2 Automatic level control calibration .................................................................................... 161 Appendix B Components................................................................................................................ 162 B.1 Audio inputs ...................................................................................................................... 162 B.2 Microphone bias ................................................................................................................ 163 B.3 Audio outputs .................................................................................................................... 163 B.4 Headphone charge pump ................................................................................................. 164 B.4.1 Single supply mode ........................................................................................... 164 B.5 Digital interfaces ................................................................................................................ 165 B.6 References ........................................................................................................................ 166 B.7 Supplies ............................................................................................................................ 167 B.8 Ground .............................................................................................................................. 167 B.9 Capacitor selection............................................................................................................ 168 Appendix C PCB layout guidelines ............................................................................................... 169 C.1 Layout and schematic support .......................................................................................... 169 C.2 General recommendations ................................................................................................ 170 Revision history ............................................................................................................................... 170 Datasheet Revision 2.3 6 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 1 Company confidential Terms and definitions ADC ALC AGS BIQ CIC DAC DAI DGS DMIC DRE DTMF DWA HBM HPF 2 IC 2 IS LDO LPF MCLK PC PGA PLL PSRR RC SC SDM SNR SRM SWG TDM THD+N VCO Datasheet Analog to Digital Converter Automatic Level Control ADC Gain Swap (input Dynamic Range Extension) Biquad Filter Cascaded Integrator and Comb Digital to Analog Converter Digital Audio Interface DAC Gain Swap (output Dynamic Range Extension) Digital Microphone Dynamic Range Extension Dual Tone Multi-Frequency Data-Weighted Averager Human Body Model High-Pass Filter Inter-Integrated Circuit interface Inter-IC Sound Low Dropout Regulator Low-Pass Filter Master Clock Program Counter Programmable Gain Amplifier Phase Locked Loop Power Supply Rejection Ratio Resistance-Capacitance System Controller Sigma Delta Modulator Signal to Noise Ratio Sample Rate Matching Sine Wave Generator Time Division Multiplexing Total Harmonic Distortion plus Noise Voltage-Controlled Oscillator Revision 2.3 7 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 2 Company confidential Block diagram Figure 2: DA7218 block diagram 3 Pinout Figure 3: DA7218 ballout diagram Datasheet Revision 2.3 8 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 1: DA7218 pin description Pin no. Pin name Type (Table 2) Description AI/DO Differential analog microphone 1 input (Pos) Microphone inputs A15 MIC1_P DMIC1CLK B14 MIC1_N Digital microphone 1 clock output AI/DI DMIC1IN D16 MIC2_P Differential analog microphone 1 input (Neg) Digital microphone 1 data input AI/DO DMIC2CLK Differential analog microphone 2 input (Pos) Digital microphone 2 clock output C15 MIC2_N DMIC2IN AI/DI Differential analog microphone 2 input (Neg) Digital microphone 2 data input B12 MICBIAS1 AIO Microphone bias output 1 B16 MICBIAS2 AIO Microphone bias output 2 Headphone outputs A5 HPL AO Single-ended headphone output (Left) A3 HPR AO Single-ended headphone output (Right) B6 HPLDET AI Current source for HP detect B4 GND_SENSE AI Ground reference for single-ended headphone output Charge pump A1 HPCSP AIO Charge pump reservoir capacitor (Pos) D2 HPCSN AIO Charge pump reservoir capacitor (Neg) C1 HPCFP AIO Charge pump flying capacitor (Pos) C3 HPCFN AIO Charge pump flying capacitor (Neg) Digital interface 2 D12 SDA DIOD I C bi-directional data C11 SCL DI I C clock D14 AD DI I C slave address select (high = 1B, low = 1A) C13 nIRQ DIOD Interrupt output (open drain active low) C7 DATIN DIO DAI data input to DA7218 C9 DATOUT DIO DAI data output from DA7218 D6 BCLK DIO DAI bit clock D8 WCLK DIO DAI word clock (L/R select) D10 MCLK DI Master clock input 2 2 References A7 DACREF AIO DAC reference decoupling capacitor A9 VMID AIO Mid-rail reference decouplingcapacitor A11 VREF AIO Bandgap reference decoupling capacitor AO Output from digital supply LDO Linear regulator D4 Datasheet VDDDIG Revision 2.3 9 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Pin no. Company confidential Pin name Type (Table 2) Description B8 VDD AI Main analog supply A13 VDD_MIC AI Supply for MICBIAS LDO C5 VDD_IO AI Supply for digital interface and LDO B10 GND AI Ground reference B2 GND_CP AI Ground reference Supplies Table 2: Pin type definition Pin type Description Pin type Description DI Digital Input AI Analog Input DO Digital Output AO Analog Output DIO Digital Input/Output AIO Analog Input/Output DIOD Digital Input/Output open drain SPU Switchable pull-up resistor PU Fixed pull-up resistor SPD Switchable pull-down resistor PD Fixed pull-down resistor 3.1 3.1.1 Input pins Pin MIC1_P (DMIC1CLK) MIC1_P is the positive differential input for the first analog microphone channel. It can be used as a single-ended input (see Figure 8). Alternatively for digital microphones, MIC1_P can be used to provide a clock output. 3.1.2 Pin MIC1_N (DMIC1IN) MIC1_N is the negative differential input for the first analog microphone channel. It can be used as a single-ended input. Alternatively for digital microphones, MIC1_N can be used as a data input. 3.1.3 Pin MIC2_P (DMIC2CLK) MIC2_P is the positive differential input for the second analog microphone channel. It can be used as a single-ended input. Alternatively for digital microphones, MIC2_P can be used to provide a clock output. 3.1.4 Pin MIC2_N (DMIC2IN) MIC2_N is the negative differential input for the second analog microphone channel. It can be used as a single-ended input. Alternatively for digital microphones, MIC2_N can be used as a data input. 3.1.5 Pin MCLK MCLK is the master clock input pin. It is used as the main system clock either directly or via the PLL. Datasheet Revision 2.3 10 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 3.1.6 Company confidential Pin SCL 2 SCL is the Control Interface (I C) clock input and is used in conjunction with SDA to control the device. 3.1.7 Pin AD 2 AD is used to select between one of two possible I C slave addresses by connecting the pin to GND or VDD_IO. (High = 1B, Low = 1A). 3.1.8 Pin DATIN DATIN is the data input pin which forms part of the Digital Audio Interface. It is used to present audio playback data to the device. 3.2 3.2.1 Output pins Pin nIRQ nIRQ is the open drain active-low interrupt output to alert the host to either an accessory or a level-detect event. 3.2.2 Pin DATOUT DATOUT is the data output pin which forms part of the Digital Audio Interface. 3.3 3.3.1 Bi-directional pins Pin SDA 2 SDA is the Control Interface (I C) data input/output and is used in conjunction with SCL to control the device. 3.3.2 Pin BCLK BCLK is the bit clock input/output pin which forms part of the Digital Audio Interface (DAI). It is used to clock audio data bits into or out from the device or both. 3.3.3 Pin WCLK WCLK is the word clock input/output pin that forms part of the DAI. 3.4 3.4.1 Single-ended headphone pins Pin HPL HPL is the left-channel headphone output. It is ground-centred so the headphone speaker can be connected directly between HPL and ground. 3.4.2 Pin HPR HPR is the right-channel headphone output. It is ground-centred so the headphone speaker can be connected directly between HPR and ground. 3.4.3 Pin GND_SENSE GND_SENSE is the ground reference for the headphone output. The trace between the ball and the headphone connector must be grounded as close as possible to the headphone connector. Datasheet Revision 2.3 11 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential The GND_SENSE trace should run in parallel with the HPL and HPR traces in a differential-style routing for best common-node noise rejection. 3.4.4 Pin HPLDET HPLDET is used to detect the insertion or removal of a jack. If used it must be connected to the tip detect pin in the headphone socket. If not required it must be left unconnected. 3.5 3.5.1 Charge pump pins Pin HPCSP HPCSP is the positive output from the headphone charge pump. This pin should be connected to Ground via a reservoir capacitor. 3.5.2 Pin HPCSN HPCSN is the negative output from the headphone charge pump. If using the charge pump, this pin must be connected to Ground via a reservoir capacitor. If the charge pump is not being used, then this pin should be tied directly to Ground. 3.5.3 Pin HPCFP HPCFP is one of the flying capacitor connections required by the headphone charge pump. If the charge pump is in use it must be connected to HPCFN via a capacitor. If the charge pump is not being used, then this pin can be left floating. 3.5.4 Pin HPCFN HPCFP is one of the flying capacitor connections required by the headphone charge pump. If the charge pump is in use it must be connected to HPCFP via a capacitor. If the charge pump is not being used, then this pin can be left floating. 3.6 3.6.1 References Pin VMID VMID is mid-rail reference decoupling capacitor connection. 3.6.2 Pin DACREF DACREF is the DAC reference decoupling capacitor connection. 3.6.3 Pin VREF VREF is the bandgap reference decoupling capacitor connection. 3.6.4 Pin MICBIAS1 MICBIAS1 is the first of two MICBIAS outputs. This must be decoupled with a 1 µF capacitor 3.6.5 Pin MICBIAS2 MICBIAS2 is the second of two MICBIAS outputs. This must be decoupled with a 1 µF capacitor. Datasheet Revision 2.3 12 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 3.6.6 Company confidential Pin VDDDIG VDDDIG is the internal digital supply rail decoupling pin and is used to monitor the LDO output. This must be decoupled with a 1 µF capacitor. 3.7 3.7.1 Supply pins Pin VDD VDD is main analog supply pin. It supplies all the analog circuits except the MICBIAS outputs and the HPAMP outputs. 3.7.2 Pin VDD_IO VDD_IO is the supply pin for the digital input/output signals. 3.7.3 Pin VDD_MIC VDD_MIC is the supply pin for the MICBIAS outputs. 3.8 3.8.1 Ground pins Pin GND GND is one of the two ground reference pins (the other is GND_CP) on the device. Connect this pin to a Ground plane as close as possible to the device. 3.8.2 Pin GND_CP GND_CP is one of the two ground reference pins (the other is GND) on the device. Connect this pin to a Ground plane as close as possible to the device. Datasheet Revision 2.3 13 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 4 Company confidential Absolute maximum ratings Table 3: Absolute maximum ratings (Note 1) Parameter Description Conditions Min Max Unit Storage temperature –65 +165 °C Operating temperature –40 +85 °C VDD Main supply voltage –0.3 +2.75 V VDD_IO Digital IO supply voltage –0.3 +5.5 V VDD_MIC Microphone bias supply voltage –0.3 +5.5 V Digital IO pins SDA, SCL, AD, BCLK, WCLK, DATIN, DATOUT, MCLK –0.3 VDD_IO + 0.3 V Accessory detect pins HPLDET –0.3 VDD_IO + 0.3 V Analog input pins MIC1_P, MIC1_N, MIC2_P, MIC2_N –0.3 VDD + 0.3 V Package thermal resistance ESD susceptibility 60 °CW Human body model (HBM) 2 kV Note 1 Stresses beyond those listed under ‘Absolute maximum ratings’ may cause permanent damage to the device. These are stress ratings only, so functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note 2 All figures are to JEDEC specifications. 5 Recommended operating conditions Table 4: Recommended operating conditions Parameter Description Conditions Min Typ Max Unit Operating temperature –25 +85 °C VDD Main supply voltage +1.7 +2.65 V VDD_IO Digital IO supply voltage +1.5 +3.6 V VDD_MIC Microphone bias supply voltage +1.8 +3.6 V Datasheet Revision 2.3 14 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 6 Company confidential Electrical characteristics Unless otherwise stated, test conditions are as follows: VDD = VDD_IO = 1.8 V, VDDMIC = 3.3 V, VDDDIG = 1.05 V, MCLK = 12.288 MHz, SR = 48 kHz, PLL = Bypass mode, Slave mode. Table 5: Power consumption Description Conditions (Note 1) Min Typ Powerdown mode Max Unit 5 µA Digital playback to headphone, no load DACL/R to HP_L/R, quiescent 4 mW Digital playback to headphone, with load DACL/R to HP_L/R, 32 Ω load, 0.1 mW at 0 dBFS 6.6 mW Digital playback to headphone, with load DACL/R to HP_L/R, 16 Ω load, 0.1 mW at 0 dBFS 7.7 mW Microphone stereo record MICL/R to ADCL/R 2.5 mW Microphone stereo record and digital playback to Headphone, no load MICL/R to ADCL/R and DACL/R to HP_L/R, quiescent 5.5 mW Microphone stereo record and digital playback to headphone, with load MICL/R to ADCL/R and DACL/R to HP_L/R, 16 Ω load, 0.1 mW at 0 dBFS 8.8 mW Note 1 VDD = VDD_IO = VDD_MIC = 1.8 V, Ta = 25°C, Fs = 48 kHz Table 6: Electrical characteristics: Microphone bias Description Condition Min Programmable output voltage No load, VDD_MIC > VMICBIAS + 200 mV 1.6 Output voltage step Typ 200 Max Unit 3.0 V mV Output current Output voltage droop < 50 mV 2 mA Power supply rejection ratio 20 Hz to 2 kHz 2 kHz to 20 kHz 70 50 dB Output voltage noise VMICBIAS ≤ 2.2 V Datasheet Revision 2.3 15 of 171 5 µVRMS 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 7: Electrical characteristics: Microphone amplifier Description Condition Min Full-scale input signal 0 dB gain, singled-ended Typ Max 0.8 * VDD Input resistance 12 Programmable gain −6 15 Gain step size Unit VPP 18 kΩ 36 dB 6 dB Absolute gain accuracy 0 dB @ 1 kHz -1.0 1.0 dB Gain step error 20 Hz to 20 kHz -0.1 0.1 dB Input noise level Inputs connected to GND, 24 dB gain, input-referred, A-weighted Amplitude ripple 20 Hz to 20 kHz -0.5 Power supply rejection ratio 20 Hz to 2 kHz 2 kHz to 20 kHz 90 70 5 µVRMS 0.5 dB dB Table 8: Electrical characteristics: Input amplifier Description Condition Full-scale input signal 0 dB gain Programmable gain Min Typ Max 1.6 * VDD −4. 5 Gain step size Unit VPP 18 1.5 dB dB Absolute gain accuracy 0 dB @ 1 kHz -1.0 1.0 dB Gain step error 20 Hz to 20 kHz -0.1 0.1 dB Amplitude ripple 20 Hz to 20 kHz -0.5 0.5 dB Power supply rejection ratio 20 Hz to 2 kHz 2 kHz to 20 kHz 90 70 dB Table 9: Electrical characteristics: ADC Description Condition Full-scale input signal 0 dBFS digital output level Signal to noise ratio Min Typ Max Unit 1.6 * VDD VPP A-weighted 90 dB Dynamic range ADC DRE enabled, A-weighted 105 dB Total harmonic distortion plus noise -1 dBFS ADC output level -85 dB In-band spurious noise 0 dBFS ADC output level -85 dB Power supply rejection ratio 20 Hz to 2 kHz 2 kHz to 20 kHz Relative to VDD Datasheet Revision 2.3 16 of 171 70 50 dB 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 10: Electrical characteristics: DAC Description Condition Full-scale output signal 0 dBFS digital input level Signal to noise ratio Min Typ Max Unit 1.6 * VDD VPP A-weighted 100 dB Dynamic range DAC DRE enabled, A-weighted 110 dB Total harmonic distortion plus noise -1 dBFS digital input level -90 dB Power supply rejection ratio 20 Hz to 2 kHz 2 kHz to 20 kHz Relative to VDD 70 50 dB Table 11: Electrical characteristics: Headphone amplifier Description Condition Full-scale output signal No load DC output offset −30 dB gain Maximum output power per channel Min Typ Max 1.6 * VDD Unit VPP 250 µV VDD = 1.8 V, THD < 0.1 %, RLOAD = 16 Ω, 1 kHz 27 mW RMS VDD = 2.5 V, THD < 0.1 %, RLOAD = 16 Ω, 1 kHz 45 mW RMS Quiescent current per channel 150 Load resistance 13 µA Ω 16 Load capacitance 500 pF Load inductance 400 µH +0.5 dB Frequency Response 20 Hz to 20 kHz -0.5 VDD = 1.8 V, 0 dB gain A-weighted 98 dB VDD = 2.5 V, 0 dB gain A-weighted 100 dB Signal to noise ratio Output noise level 20 Hz to 20 kHz, 10 MΩ 300 1.0 Typ Max Unit 2.5 Ω pF T BCLK period 75 ns tr BCLK rise time 8 ns tf BCLK fall time 8 ns thC BCLK high period 40 % 60 % T tlC BCLK low period 40 % 60 % T tdCW BCLK to WCLK delay -30 % +30 % T tdCD BCLK to DATOUT delay -30 % +30 % T thW DSP mode 100 % T Non-DSP mode Word length (Note 1) T DSP mode 100 % T Non-DSP mode Word length (Note 2) T WCLK high time tlW WCLK low time tsW WCLK setup time Slave mode 7 ns thW WCLK hold time Slave mode 2 ns tsD DATIN setup time 7 ns thD DATIN hold time 2 ns DATOUT to WCLK delay tdWD DATOUT is synchronised to BCLK Note 1 WCLK must be high for at least the word length number of BCLK periods Note 2 WCLK must be low for at least the word length number of BCLK periods Datasheet Revision 2.3 25 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8 Company confidential Functional description DA7218 is a high-performance, low-power audio codec optimised for use in headsets or wearable devices. It contains two analog microphone-to-ADC and/or up to four digital microphone-to-input filter paths, and a digital audio interface (DAI) for input and output. DA7218 has single-ended headphone outputs with headphone-detect for use in accessories, offering excellent left to right channel separation and common mode noise rejection. The other chip in this family, the DA7217 has differential headphone outputs without headphone-detect, and has been designed for use inside headset devices. The digital engine input includes a high pass filter, automatic level control (ALC), and level detection. The output stage has a high pass filter, a 5-band EQ, and a five-stage biquad filter. The digital engine also has a dynamic range extension (DRE) block, and a tone generator that supports dual tone multi-frequency (DTMF). The flexible digital mixer allows any or all of the seven inputs (four input filters, the tone generator, and DAI left and right inputs) to be routed to any or all of the six digital outputs (left and right output filters, and DAI outputs). There is an independently programmable gain on each of the 42 possible paths. 8.1 8.1.1 Device operation Power modes The DA7218 codec has two operating modes: STANDBY – The device is asleep with all internal circuits disabled, but all register states are retained. ACTIVE – The device is awake and ready to perform audio functions. Blocks can be enabled as required. 8.1.1.1 STANDBY mode In STANDBY mode, both the reference voltage generator and the reference oscillator are shut down so no audio functions are possible. All audio paths must be shut down before entering STANDBY mode (system_active = 0), as the transition to STANDBY mode is immediate and is not pop-free. 8.1.1.2 ACTIVE mode To put the device in ACTIVE mode, write system_active = 1. On entering ACTIVE mode, the reference voltage generator and reference oscillator are automatically enabled. Datasheet Revision 2.3 26 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.2 Company confidential Input paths 8.2.1 Microphone inputs The DA7218 analog inputs consist of two independent signal chains, each including two amplifiers and an ADC as shown in Figure 7. Figure 7: Analog inputs block diagram The two microphone amplifiers can be configured in a) fully differential mode for improved common-mode noise rejection b) pseudo-differential mode c) single-ended mode (MIC1|2_P or MIC1|2_N) All configurations are illustrated in Figure 8. Digital microphone connection details are described in section 8.2.1.3. 8.2.1.1 Microphone biases The DA7218 codec has two independently controlled microphone bias outputs. Low noise (normal) mode Each bias output can be independently programmed from 1.6 V to 3.0 V in 0.2 V steps using micbias_2_level and micbias_2_level in MICBIAS_CTRL. Each microphone bias level can only be changed while the associated MICBIAS circuit is disabled (micbias_1_en = 0 for MICBIAS1 or micbias_2_en = 0 for MICBIAS2). Low-power mode Both microphone bias circuits can also be used as low-power voltage sources optimised for always-on microphones. In low-power mode the output voltage is fixed at 1.2 V. The low-power mode is enabled by setting the micbias_1_lp_mode bit = 1 in the MICBIAS_CTRL register. MICBIAS1 is enabled by setting the micbias_1_en bit = 1. The second microphone bias circuit (MICBIAS2) is controlled in the same way. Low-power mode can only be changed while the MICBIAS circuits are disabled (micbias_1_en = 0 for low-power mode on MICBIAS1, and micbias_2_en = 0 for low-power mode on MICBIAS2). Datasheet Revision 2.3 27 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 25: Microphone bias settings micbias_1_level micbias_2_level Output voltage in low-noise mode micbias_1|2_lp_mode = 0 (V) 000 1.6 001 1.8 010 2.0 011 2.2 100 2.4 101 2.6 110 2.8 111 3.0 8.2.1.2 Output voltage in low-power mode micbias_1|2_lp_mode = 1 (V) 1.2 Microphone amplifier Figure 8: Analog microphone configurations The configuration of the first microphone amplifier (MIC_1_CTRL) is specified using mic_1_amp_in_sel. It is enabled by setting the mic_1_amp_en bit, and is muted by setting the mic_1_amp_mute_en bit. The gain of the amplifier can be set in the range of –6 dB to +36 dB in 6 dB steps using mic_1_amp_gain (see Table 26 :). The second microphone amplifier (MIC_2_CTRL) is controlled in the same way. Datasheet Revision 2.3 28 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 26 : MIC_1_GAIN and MIC_2_GAIN gain settings mic_1_amp_gain mic_2_amp_gain Amplifier gain (dB) 000 -6 001 0 010 6 011 12 100 18 101 24 110 30 111 36 8.2.1.3 Digital microphones The DA7218 can support up to four digital microphones by reusing the MIC1_P and MIC_2P pins as clock outputs, and the MIC1_N and MIC_2N pins as digital data inputs. The IO voltage level of DMIC1 is set by the voltage present on MICBIAS1 and the IO voltage level of DMIC2 is set by the voltage present on MICBIAS2. The first DMIC input is controlled using the DMIC_1_CTRL register. The left channel is enabled using dmic_1l_en and the right channel using dmic_1r_en. The DMIC clock rate can be set to either 3 MHz or 1.5 MHz using dmic_1_clk_rate. DMIC_1 data is sampled on both the rising and the falling edges of the DMIC clock. The register field dmic_1_data_sel determines which of the rising and the falling edges corresponds to the left channel, and which to the right. The register field dmic_1_samplephase controls whether the sample point for the DMIC data is on the DMICCLCK edges (dmic_1_samplephase = 0) or at the midpoint between the DMICCLCK edges (dmic_1_samplephase = 1). The second DMIC input is controlled in the same way using DMIC_2_CTRL. Table 27: Digital microphone control bits Bit setting Function Register bits Digital microphone enable/disable dmic_1r_en dmic_1l_en dmic_2l_en dmic_2r_en Digital microphone clock rate dmic_l_clk_rate dmic_2_clk_rate Digital microphone sample phase dmic_1_samplephase dmic_2_samplephase Digital microphone left/right data selection dmic_1_data_sel dmic_2_data_sel Datasheet Revision 2.3 29 of 171 0 1 DMIC is disabled DMIC is enabled 3 MHz 1.5 MHz Data sampled on the clock edges Data sampled between the clock edges Rising edge = left Falling edge = right Rising edge = right Falling edge = left 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.2.1.4 Company confidential Input amplifiers The two input amplifiers provide an additional gain stage between the microphone amplifiers (see section 8.2.1.2 and Figure 7) and the ADC inputs. The input amplifier (MIXIN_1_CTRL) is enabled by setting mixin_1_amp_en = 1. The gain can be set in the range of –4.5 dB to +18 dB in 1.5 dB steps using MIXIN_1_GAIN. Gain updates can be synchronised with signal zero-crossings by setting mixin_1_amp_zc_en = 1. If no zero-crossing is detected within the timeout period of approximately 100 ms, the update is applied unconditionally. As an alternative to zero-cross synchronisation, gain updates can be ramped through all intermediate values by setting mixin_1_amp_ramp_en = 1. This ramp setting overrides the settings of mixin_1_amp_zc_en. The amplifier can be muted using mixin_1_amp_mute_en.The single input to the first amplifier can be deselected by setting mixin_1_mix_sel = 0. The second input amplifier (MIXIN_2_CTRL) is controlled in the same manner as MIXIN_1_CTRL. Table 28: MIXIN_1_GAIN and MIXIN_2_GAIN gain settings mixin_1_amp_gain mixin_2_amp_gain Amplifier gain (dB) 0000 -4.5 0001 -3.0 0010 -1.5 0011 0.0 0100 1.5 0101 3.0 0110 4.5 0111 6.0 1000 7.5 1001 9.0 1010 10.5 1011 12.0 1100 13.5 1101 15.0 1110 16.5 1111 18.0 8.2.2 Analog to digital converters The DA7218 codec contains the stereo audio analog to digital converters (ADCs). These can run either in low-power mode for always-on applications, or in high performance mode for other applications. Each ADC is automatically enabled whenever the input filters are enabled and digital microphones are not enabled. Not all sample rates are supported in all modes. Table 29 describes which sample rates are supported in each mode. Datasheet Revision 2.3 30 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 29: Supported sample rates in different modes Sample rate (kHz) Low power mode adc_lp_mode=1 Normal mode adc_lp_mode=0 voice_en=1 voice_en=0 voice_en=1 voice_en=0 8.0 Supported Supported Supported Supported 11.025/12.0 Not supported Supported Supported Supported 16.0 Not supported Supported Supported Supported 22.050/24.0 Not supported Supported Supported Supported 32.0 Not supported Not supported Supported Supported 44.100/48.0 Not supported Supported Not supported Supported 88.200/96.0 Not supported Not supported Not supported Supported 8.2.2.1 High performance mode In normal (high performance) mode (adc_lp_mode = 0), the ADCs are clocked at a fixed rate of either 3.072 MHz or 2.8224 MHz, depending on the required input sample rate (SR1). 8.2.2.2 Low-power mode The low-power mode of operation is designed for always-on applications. In low-power mode, the ADCs are clocked at half the ‘normal’ (high-performance) rate, that is, at either 1.5360 MHz or 1.4112 MHz. Low-power mode is set in both ADCs by setting adc_lp_mode = 1. In this mode there is a small increase in distortion. 8.2.2.3 Anti-alias filters The anti-alias filters at the front-end of the ADC are enabled by default. The anti-alias filters can be disabled to save power.at the expense of increased distortion by setting adc_1_aaf_en = 0 for channel 1, or adc_2_aaf_en = 0 for channel 2. 8.3 Digital engine The DA7218 chip contains a digital engine that performs the signal processing and also provides overall system control. Within the digital engine, all seven possible input signals can be mixed and output to any of the six possible outputs. See Figure 9 for a visual representation of this. The output signals from either of the two ADCs or any of the four digital microphones are passed to the input filter block. The filter block includes a high-pass filter for wind noise suppression, an automatic level control, and input level detection. The signals from the input filters are sent to the digital mixer where they can be combined with signals from the tone generator and the digital audio interface (DAI), and routed to the output filters and the DAI. The output filters contain a high-pass filter for DC offset removal, a fixed 5-band equaliser, and a flexible 5-stage biquad filter to adjust the sound of the output signals. There is also a sidetone path that can take one signal from either the ADCs or the digital microphones and perform filtering using three biquad sections before passing the signal straight to the output filters. The digital engine contains a DRE module that can be used to automatically swap analog and digital gains on the input and output signal paths in order to maximise the dynamic range of the codec. Finally a system controller module is included to ensure correct sequencing of the events required to bring up and shut down signal paths without creating pops and clicks. Datasheet Revision 2.3 31 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 9: Digital engine block diagram 8.3.1 Input processing 8.3.1.1 Input filters Figure 10: Input filters block diagram There are two stereo pairs of input filters (IN_1L_FILTER_CTRL and IN_1R_FILTER_CTRL, and IN_2L_FILTER_CTRL and IN_2R_FILTER_CTRL) that can be used to process signals from either Datasheet Revision 2.3 32 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential the two mono ADCs, or from the two stereo digital microphone inputs. The input (ADC or DMIC) to the input filters is selected using dmic_1l_en (or dmic_1r_en) and dmic_2l_en (or dmic_2r_en). If an ADC input is selected, the analog part of the ADC is enabled whenever the DMIC has not been enabled and the connected input filter has been enabled using one of the filter enabling bits (in_1l_filter_en, in_1r_filter_en, in_2l_filter_en, and in_2r_filter_en). Left and right channels of the two input filters can be controlled independently. The left channel of the first input filter is enabled using in_1l_filter_en. It is muted using in_1l_mute_en and gain-ramping is enabled using in_1l_ramp_en. The gain can be set in the range of –83.25 dB to +12 dB in +0.75 dB steps using in_1l_digital_gain. The right channel and the second input filter channels are all controlled in the same way. Datasheet Revision 2.3 33 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 30: IN_FILT digital gain settings in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, & in_2r_digital_gain settings in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, & in_2r_digital_gain settings in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, & in_2r_digital_gain settings Binary Hex Gain (dB) Binary Hex Gain (dB) Binary Hex Gain (dB) 0000000 0000001 0000010 0000011 0000100 0000101 0000110 0000111 0001000 0001001 0001010 0001011 0001100 0001101 0001110 0001111 0010000 0010001 0010010 0010011 0010100 0010101 0010110 0010111 0011000 0011001 0011010 0011011 0011100 0011101 0011110 0011111 0100000 0100001 0100010 0100011 0100100 0100101 0100110 0100111 0101000 0101001 0101010 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F 0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A -83.25 -82.5 -81.75 -81 -80.25 -79.5 -78.75 -78 -77.25 -76.5 -75.75 -75 -74.25 -73.5 -72.75 -72 -71.25 -70.5 -69.75 -69 -68.25 -67.5 -66.75 -66 -65.25 -64.5 -63.75 -63 -62.25 -61.5 -60.75 -60 -59.25 -58.5 -57.75 -57 -56.25 -55.5 -54.75 -54 -53.25 -52.5 -51.75 0101011 0101100 0101101 0101110 0101111 0110000 0110001 0110010 0110011 0110100 0110101 0110110 0110111 0111000 0111001 0111010 0111011 0111100 0111101 0111110 0111111 1000000 1000001 1000010 1000011 1000100 1000101 1000110 1000111 1001000 1001001 1001010 1001011 1001100 1001101 1001110 1001111 1010000 1010001 1010010 1010011 1010100 1010101 0x2B 0x2C 0x2D 0x2E 0x2F 0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F 0x40 0x41 0x42 0x43 0x44 0x45 0x46 0x47 0x48 0x49 0x4A 0x4B 0x4C 0x4D 0x4E 0x4F 0x50 0x51 0x52 0x53 0x54 0x55 -51 -50.25 -49.5 -48.75 -48 -47.25 -46.5 -45.75 -45 -44.25 -43.5 -42.75 -42 -41.25 -40.5 -39.75 -39 -38.25 -37.5 -36.75 -36 -35.25 -34.5 -33.75 -33 -32.25 -31.5 -30.75 -30 -29.25 -28.5 -27.75 -27 -26.25 -25.5 -24.75 -24 -23.25 -22.5 -21.75 -21 -20.25 -19.5 1010110 1010111 1011000 1011001 1011010 1011011 1011100 1011101 1011110 1011111 1100000 1100001 1100010 1100011 1100100 1100101 1100110 1100111 1101000 1101001 1101010 1101011 1101100 1101101 1101110 1101111 1110000 1110001 1110010 1110011 1110100 1110101 1110110 1110111 1111000 1111001 1111010 1111011 1111100 1111101 1111110 1111111 0x56 0x57 0x58 0x59 0x5A 0x5B 0x5C 0x5D 0x5E 0x5F 0x60 0x61 0x62 0x63 0x64 0x65 0x66 0x67 0x68 0x69 0x6A 0x6B 0x6C 0x6D 0x6E 0x6F 0x70 0x71 0x72 0x73 0x74 0x75 0x76 0x77 0x78 0x79 0x7A 0x7B 0x7C 0x7D 0x7E 0x7F -18.75 -18 -17.25 -16.5 -15.75 -15 -14.25 -13.5 -12.75 -12 -11.25 -10.5 -9.75 -9 -8.25 -7.5 -6.75 -6 -5.25 -4.5 -3.75 -3 -2.25 -1.5 -0.75 0 0.75 1.5 2.25 3 3.75 4.5 5.25 6 6.75 7.5 8.25 9 9.75 10.5 11.25 12 Datasheet Revision 2.3 34 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.3.1.2 Company confidential High-pass filter The DA7218 contains two input high-pass filters (HPFs). The first filter is controlled using IN_1_HPF_FILTER_CTRL and IN_2_HPF_FILTER_CTRL to remove any DC components from the incoming audio. This filter operates at all sample rates. For this first filter, in music mode in_1_voice_en must be set to 0 and the HPF corner frequency is set using in_1_audio_hpf_corner. A second voice filter is available when the sample rate is 32 kHz or lower. This filter is controlled using in_1_voice_en and in_2_voice_en. It has a wider range of corner frequencies to help remove low frequency artefacts. In voice mode, in_1_voice_en must = 1 in which case the HPF corner frequency is set using in_1_voice_en. The value of the HPF corner frequency also depends on the input sample rate (SR1) as shown in Table 31 (ADC in high power mode) and Table 32 (ADC in low power mode). Note that when operating in ADC low power mode (adc_lp_mode = 1), the voice filter is only available at a sample rate of 8 kHz. Similarly the audio filter will not operate at sample rates of 32 kHz, 88.2 kHz, or 96 kHz. The sample rates available in the different ADC power modes are summarised in Table 31 for the ADC in high-power mode (adc_lp_mode = 0), and Table 32 for the ADC in low-power mode (adc_lp_mode = 1). Table 31: Input high-pass filter settings (ADC in high-power mode) in_1_audio_hpf_corner out_1_audio_hpf_corner 11.025 12 16 22.05 24 32 44.1 48 88.2 96 00 0.33 0.46 0.5 0.67 0.92 1 1.33 1.84 2 3.68 4 01 0.67 0.92 1 1.33 1.84 2 2.67 3.68 4 7.35 8 10 1.33 1.84 2 2.67 3.68 4 5.33 7.35 8 14.7 16 11 2.67 3.68 4 5.33 7.35 8 10.67 14.7 16 29.4 32 000 2.5 3.45 3.75 5 6.89 7.5 10 001 25 34.5 37.5 50 68.9 75 100 010 50 68.9 75 100 137.8 150 200 011 100 137.8 150 200 275.6 300 400 100 150 206.7 225 300 413.4 450 600 101 200 275.6 300 400 551.3 600 800 110 300 413.4 450 600 826.9 900 1200 111 400 551.3 600 800 1102.5 1200 1600 in_1_voice_hpf_corner out_1_voice_hpf_corner in_1_voice_en out_1_voice_en 8 Sample rate (kHz) 0 1 Datasheet Revision 2.3 35 of 171 Voice HPF not available for sample rates above 32 kHz. 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 32: Input high-pass filter settings (ADC in low-power mode) in_1_audio_hpf_corner out_1_audio_hpf_corner in_1_voice_hpf_corner out_1_voice_hpf_corner in_1_voice_en out_1_voice_en 0 8 11.025 12 16 22.05 24 32 44.1 48 88.2 00 0.33 0.46 0.5 0.67 0.92 1 1.84 2 01 0.67 0.92 1 1.33 1.84 2 3.68 4 10 1.33 1.84 2 2.67 3.68 4 7.35 8 11 2.67 3.68 4 5.33 7.35 8 32 kHz sample rate not available in lowpower mode 14.7 16 88.2 kHz and 96 kHz sample rates not available in low-power mode Sample Rate (kHz) 000 2.5 001 25 010 50 011 100 100 150 101 200 110 300 111 400 1 96 In low-power mode, the voice HPF is only available at a sample rate of 8 kHz 8.3.1.3 Automatic level control For improved sound recordings of signals with a large volume range, the DA7218 offers a fullyconfigurable automatic recording level control (ALC) for microphone inputs. This is enabled via the alc_en control, and can be enabled independently on any of the four input channels. The ALC monitors the digital signal after the ADC and adjusts the microphones’ analog and digital gain to maintain a constant recording level, regardless of the analog input signal level. Operation of ALC is illustrated in Figure 11. When the input signal volume is high, the ALC system will reduce the overall gain until the output volume is below the specified maximum value. When the input signal volume is low, the ALC will increase the gain until the output volume increases above the specified minimum value. If the output signal is within the desired signal level (between the specified minimum and maximum levels), the ALC does nothing. The minimum and the maximum thresholds that trigger a gain change of the ALC are programmed by the alc_threshold_min and alc_threshold_max controls. Datasheet Revision 2.3 36 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 11: Principle of operation of the ALC In Hybrid mode, the total gain is made up of an analog gain, which is applied to the microphone amplifiers, and a digital gain, which is implemented in the filtering stage. The ALC block monitors and controls the gain of the microphone and the ADC. Note that although the ALC is controlling the gain, it does not modify any of the registers mixin_1_amp gain or mixin_2_amp_gain, nor does it modify any of the digital gain registers in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, or in_2r_digital_gain. These registers are ignored while the ALC is in operation. In Digital-only mode only the digital gain in the ADC is altered. Note that although the ALC is controlling the gain, it does not modify any of the registers in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, or in_2r_digital_gain. These registers are ignored while the ALC is in operation. Hybrid mode should be used whenever analog microphones are being used. Digital-only mode should be used whenever digital microphones are being used. When using analog microphones, the combined analog/digital gain mode (Hybrid mode) can be enabled using. alc_sync_mode See section 8.3.1.5 for details on ALC calibration in Hybrid mode. The minimum and maximum levels of digital gain that can be applied by the ALC are controlled using alc_atten_max and alc_gain_max. Similarly the minimum and maximum levels of analog gain are controlled by alc_ana_gain_min and alc_ana_gain_max. The rates at which the gain is changed are defined by the attack and decay rates in register ALC_CTRL2. When attacking, the gain decreases with alc_attack rate. When decaying, the gain increases with alc_release rate. The hold-time is defined by alc_hold in the ALC_CTRL3 register. This controls the length of time that the system maintains the current gain level before starting to decay. This prevents unwanted changes in the recording level when there is a short-lived ‘spike’ in input volume, for example when recording speech. Typically the attack rate should be much faster than the decay rate, as it is necessary to reduce rapidly increasing waveforms as quickly as possible, whereas fast release times will result in the signal appearing to ‘pump’. The ALC also has an anti-clip function that applies a very fast attack rate when the input signal is close to full-scale. This prevents clipping of the signal by reducing the signal gain at a faster rate than would normally be applied. The anti-clip function is enabled using alc_anticlip_en, and the trigger threshold is set in the range 0.034 dB/fs to 0.272 dB/fs using alc_anticlip_step. Datasheet Revision 2.3 37 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential A recording noise-gate feature is provided to avoid increasing the gain of the channel when there is no signal, or when only a noise signal is present. Boosting a signal on which only noise is present is known as ‘noise pumping’, the noise-gate prevents this. Whenever the level of the input signal drops below the noise threshold configured in alc_noise, the channel gain remains constant. max input signal min time gain level atk rate dcy rate atk hld time dcy Figure 12: Attack, delay and hold parameters 8.3.1.4 Input dynamic range extension The input dynamic range extension (DRE) automatically swaps the analog and digital gains to maximise the dynamic range at all times. The DRE block, like the Hybrid-mode ALC, controls both the analog MICAMP gain and the digital gain. However it applies equal and opposite adjustments to analog and digital gains so that total path gain remains constant while the input dynamic range is increased. DRE can be enabled for either or both ADCs using the ags_enable bits. The trigger level for the DRE can be set in the range of –90 dB to 0 dB in 6 dB steps using ags_trigger. The maximum attenuation that can be applied by the DRE can be set in the range of 0 dB to 36 dB in 6 dB steps using ags_att_max. There is also a timeout of 0.1 s that can be enabled using ags_timeout_en, and a mechanism to prevent clipping that can be enabled using ags_anticlip_en. NOTE The input DRE cannot be used with ALC. Only one of these functions can be used at any one time Datasheet Revision 2.3 38 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.3.1.5 Company confidential ALC and input DRE calibration When using the ALC in Hybrid gain mode or when using the input DRE, the DC offset at the output of the MICAMPs must be compensated for to prevent audible effects when the gains are changed. This compensation is performed automatically if the following sequence is followed: 1. Enable the required MICAMP(s) unmuted 2. Mute the MICAMP(s). Note that it is important to enable the MICAMPS unmuted before using them in this step 3. Enable the required MIXIN_1|2_AMP(s) and ADC(s) unmuted 4. Enable the DAI or set the PC to Freerun mode 5. Set calib_auto_en to 1 to start the calibration. This bit will clear to 0 once the calibration is complete 6. Set calib_offset_en to 1 7. Enable the ALC in Hybrid mode or the DRE. Note that ALC and input DRE are mutually exclusive, and only one should be enabled at any one time 8. Unmute the MICAMP(s) 8.3.1.6 Level detection Level detection can be used to signal to the host processor (via the nIRQ pin) that the input signal has exceeded the threshold level determined by lvl_det_level. Level detection can be enabled on any or all of the four input filter channels using the lvl_det_en bits. The threshold used for level detection can be programmed in the range of 1/128 full-scale to fullscale using lvl_det_level. 8.3.2 Sidetone processing There is a mono, low latency filter channel between inputs and outputs for implementing a sidetone path. The input signal to any one of the four input channels (from DMIC or ADC) can also be routed to the sidetone channel using sidetone_in_select. The output from the sidetone channel can be added to left or right (or both) output filters using outfilt_st_1l_src and outfilt_st_1r_src. The sidetone filter itself contains a three-stage biquad filter that can be used to provide custom filtering of the input signal. The biquad filter also has a programmable gain stage to adjust the level of the sidetone signal. This is controlled by sidetone_gain, and provides gain in the range -42 dB to +4.5 dB in 1.5 dB steps. The sidetone path is enabled using sidetone_filter_en. and muted using sidetone_mute_en. Figure 13: Sidetone filter block diagram The sidetone biquad filter can be used to provide custom filtering, for example microphone frequency response, or to provide other custom filtering. Each of the three biquad stages has five 16-bit coefficients a0, a1, a2, b1 and b2 (see Figure 21). For the three stages, the coefficients are numbered a00, a01 etc. as shown in Figure 14: Datasheet Revision 2.3 39 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 14: Cascade of three biquad filter stages The coefficients are stored using 8-bit registers in a dedicated address space. They are programmed by first writing the coefficient data value to sidetone_biq_3stage_data and then the coefficient address to sidetone_biq_3stage_addr. The address location for each of the coefficients is described in Table 33: Each of the 16-bit coefficients is two’s complement values that are programmed in the range of -2 (0x8000) to +2 (0x7FFF). It is the responsibility of the user to ensure that filter transfer function corresponding to the programmed coefficients is stable. Datasheet Revision 2.3 40 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 33: Sidetone 3-stage biquad filter coefficient address map Address Name Description 0x00 SIDETONE_BIQ_A00_LO Lower byte of a00 coefficient for first sidetone biquad stage 0x01 SIDETONE_BIQ_A00_HI Upper byte of a00 coefficient for first sidetone biquad stage 0x02 SIDETONE_BIQ_A01_LO Lower byte of a01 coefficient for first sidetone biquad stage 0x03 SIDETONE_BIQ_A01_HI Upper byte of a01 coefficient for first sidetone biquad stage 0x04 SIDETONE_BIQ_A02_LO Lower byte of a02 coefficient for first sidetone biquad stage 0x05 SIDETONE_BIQ_A02_HI Upper byte of a02 coefficient for first sidetone biquad stage 0x06 SIDETONE_BIQ_B01_LO Lower byte of b01 coefficient for first sidetone biquad stage 0x07 SIDETONE_BIQ_B01_HI Upper byte of b01 coefficient for first sidetone biquad stage 0x08 SIDETONE_BIQ_B02_LO Lower byte of b02 coefficient for first sidetone biquad stage 0x09 SIDETONE_BIQ_B02_HI Upper byte of b02 coefficient for first sidetone biquad stage 0x0A SIDETONE_BIQ_A10_LO Lower byte of a10 coefficient for second sidetone biquad stage 0x0B SIDETONE_BIQ_A10_HI Upper byte of a10 coefficient for second sidetone biquad stage 0x0C SIDETONE_BIQ_A11_LO Lower byte of a11 coefficient for second sidetone biquad stage 0x0D SIDETONE_BIQ_A11_HI Upper byte of a11 coefficient for first sidetone biquad stage 0x0E SIDETONE_BIQ_A12_LO Lower byte of a12 coefficient for first sidetone biquad stage 0x0F SIDETONE_BIQ_A12_HI Upper byte of a12 coefficient for first sidetone biquad stage 0x10 SIDETONE_BIQ_B11_LO Lower byte of b11 coefficient for first sidetone biquad stage 0x11 SIDETONE_BIQ_B11_HI Upper byte of b11 coefficient for second sidetone biquad stage 0x12 SIDETONE_BIQ_B12_LO Lower byte of b12 coefficient for second sidetone biquad stage 0x13 SIDETONE_BIQ_B12_HI Upper byte of b12 coefficient for second sidetone biquad stage 0x14 SIDETONE_BIQ_A20_LO Lower byte of a20 coefficient for third sidetone biquad stage 0x15 SIDETONE_BIQ_A20_HI Upper byte of a20 coefficient for third sidetone biquad stage 0x16 SIDETONE_BIQ_A21_LO Lower byte of a21 coefficient for third sidetone biquad stage 0x17 SIDETONE_BIQ_A21_HI Upper byte of a21 coefficient for third sidetone biquad stage 0x18 SIDETONE_BIQ_A22_LO Lower byte of a22 coefficient for third sidetone biquad stage 0x19 SIDETONE_BIQ_A22_HI Upper byte of a22 coefficient for third sidetone biquad stage 0x1A SIDETONE_BIQ_B21_LO Lower byte of b21 coefficient for third sidetone biquad stage 0x1B SIDETONE_BIQ_B21_HI Upper byte of b21 coefficient for third sidetone biquad stage 0x1C SIDETONE_BIQ_B22_LO Lower byte of b22 coefficient for third sidetone biquad stage 0x1D SIDETONE_BIQ_B22_HI Upper byte of b22 coefficient for third sidetone biquad stage Datasheet Revision 2.3 41 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.3.3 Company confidential Tone generator The tone generator contains two independent Sine Wave Generators (SWGs). Each SWG can generate a sine wave at a frequency (FREQ) from approximately 1 Hz to 12 kHz according to the programmed 16-bit value: FREQ[15:0] = 2^16 * fSWG/12000, for SR2 = (8, 12, 16, 24, 32, 48,96) kHz FREQ[15:0] = 2^16 * fSWG/11025, for SR2 = (11.025, 22.05, 44.1, 88.2) kHz The DA7218 should not be programmed with frequency greater than the Nyquist frequency. Nyquist frequency = SR2/2 For the first SWG, the FREQ value is stored in two 8-bit registers as freq1_u = FREQ[15:8] and freq1_l = FREQ[7:0]. The second SWG frequency is programmed in the same way using freq2_u and freq2_l. The output of the tone generator can come from either of the SWGs, or from a combination of both of them as specified by swg_sel. In addition the tone generator can produce standard Dual Tone Multi-Frequency (DTMF) tones using the two SWGs if dtmf_en = 1 and the required keypad value is programmed in dtmf_reg as shown in Table 34. Table 34: DTMF tones corresponding to the dtmf_reg value SWG2 Freq SWG1 Frequency (Hz) (Hz) 1209 1336 1477 1633 697 0x1 0x2 0x3 0xA 770 0x4 0x5 0x6 0xB 852 0x7 0x8 0x9 0xC 941 0xE 0x0 0xF 0xD The tone generator can produce 1, 2, 3, 4, 8, 16, or 32 beeps, or a continuous beep, as determined by beep_cycles. Each beep has an on period from 10 ms to 2 s as programmed in beep_on_per and an off period from 10 ms to 2 s as programmed in beep_off_per. The tone generator is started by setting the start_stopn bit, and is halted by clearing this bit. If start_stopn is cleared, the tone generator stops at the completion of the current beep cycle or at the next zero-cross if the number of beeps is set to continuous (beep_cycles = 110 or = 111). The start_stopn bit is automatically cleared once the programmed number of beep cycles has been completed. The tone generator can also be used to produce an S-ramp by setting swg_sel to 0x03. This function is required for headphone load detection as described in Section 8.4.5. 8.3.4 System controller The inputs are controlled using SYSTEM_MODES_INPUT, and the outputs are controlled using SYSTEM_MODES_OUTPUT. Writing to the mode_submit field of either of these registers will cause the system controller (SC) to process both input and output paths. When the SC is activated by asserting the mode_submit field, all of the register-writes that are required by the selected sub systems are performed automatically. Each sub-system is brought up, or down, in the correct order to avoid pops and clicks. In addition, within each sub system, the component parts are brought up in the correct pop-free and click-free sequence. Datasheet Revision 2.3 42 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.3.5 Company confidential Output processing 8.3.5.1 Output filters Figure 15: Output filters block diagram There is a stereo output filter chain that is used to process signals to be sent to the stereo DAC. The signals from the digital mixer (at SR2 rate) can be processed through a high-pass filter, a fixed 5band equaliser and a 5-stage biquad filter. They can also be combined with signals from the sidetone filter (at 4 * SR2 rate). Left and right channels of the output filter can be controlled independently. The left channel of the output filter is enabled using out_1l_filter_en and is muted using out_1l_mute_en. Gain ramping is enabled using out_1l_ramp_en. If out_1l_subrange_en is also set, the ramping will use sub-range gain steps. The 5-stage biquad filter is selected using out_1l_biq_5stage_sel. The gain of the left channel can be set in the range of -83.25 dB to +108 dB in 0.75 dB steps using OUT_1L_GAIN. The right channel of the output filter is controlled in the same way. 8.3.5.2 High-pass filter The output high-pass filters (HPFs) are controlled using OUT_1_HPF_FILTER_CTRL. In music mode out_1_voice_en must be set to 0 and the HPF corner frequency is set using out_1_audio_hpf_corner. In voice mode, out_1_voice_en must be set to 1, in which case the HPF corner frequency is set using out_1_voice_hpf_corner. The value of the HPF corner frequency also depends on the output sample rate (SR2) as shown in Table 35. The right channel of the HPF is controlled in the same way. Datasheet Revision 2.3 43 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 35: Output high-pass filter settings (ADC in High-power mode) in_1_audio_hpf_corner 11.025 12 16 22.05 24 32 44.1 48 88.2 96 00 0.33 0.46 0.5 0.67 0.92 1 1.33 1.84 2 3.68 4 01 0.67 0.92 1 1.33 1.84 2 2.67 3.68 4 7.35 8 10 1.33 1.84 2 2.67 3.68 4 5.33 7.35 8 14.7 16 11 2.67 3.68 4 5.33 7.35 8 10.67 14.7 16 29.4 32 000 2.5 3.45 3.75 5 6.89 7.5 10 001 25 34.5 37.5 50 68.9 75 100 010 50 68.9 75 100 137.8 150 200 011 100 137.8 150 200 275.6 300 400 100 150 206.7 225 300 413.4 450 600 101 200 275.6 300 400 551.3 600 800 110 300 413.4 450 600 826.9 900 1200 111 400 551.3 600 800 1102.5 1200 1600 out_1_voice_hpf_ corner in_1_voice_en 8 SR1 sample rate (kHz) 0 1 Voice HPF not available for sample rates above 32 kHz. Table 36: Output high-pass filter settings (ADC in Low-power mode) in_1_audio_hpf_corner out_1_voice_hpf_ corner in_1_voice_en 0 8 11.025 12 16 22.05 24 32 44.1 48 88.2 00 0.33 0.46 0.5 0.67 0.92 1 1.84 2 01 0.67 0.92 1 1.33 1.84 2 3.68 4 10 1.33 1.84 2 2.67 3.68 4 7.35 8 11 2.67 3.68 4 5.33 7.35 8 32 kHz sample rate not available in lowpower mode 14.7 16 88.2 kHz and 96 kHz sample rates not available in low-power mode SR1 sample rate (kHz) 000 2.5 001 25 010 50 011 100 100 150 101 200 110 300 111 400 1 96 In low-power mode, the voice HPF is only available at a sample rate of 8 kHz Datasheet Revision 2.3 44 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.3.5.3 Company confidential 5-band equaliser The output filters can provide gain or attenuation in each of five separate (fixed) frequency bands using the 5-band equaliser (EQ). The equaliser, for both left and right channels, is enabled using out_1_eq_en. The gain or attenuation of the first frequency band is programmable from -10.5 to 12.0 dB in 1.5 dB steps using out_1_eq_band1. The other four bands are programmable in the same way using out_1_eq_band2, out_1_eq_band3, out_1_eq_band4, and out_1_eq_band5. The centre or cut-off frequency of each of the five bands depends on the output sample rate (SR2) as shown in Table 37. The 5-band EQ and the 5-band biquad filter can be used at the same time for greater filtering control. Table 37: Output 5-band equaliser centre/cut-off frequencies For equaliser bands 1 and 5, the cut-off frequency depends on the gain setting. The figures quoted in this table refer to the –1 dB point with the band gain set to –3 dB Centre/cut-off frequency (Hz) at programmed setting SR2 (kHz) Band 1 cut-off Band 2 centre Band 3 centre Band 4 centre Band 5 cut-off 8 0 99 493 1528 4000 11.025 0 136 680 2106 5512 12 0 148 740 2293 6000 16 0 96 440 2128 8000 22.05 0 133 607 2933 11025 24 0 145 660 3191 12000 32 0 95 418 1797 16000 44.1 0 131 576 2386 22050 48 0 143 627 2596 24000 88.2 N/A N/A N/A N/A N/A 96 N/A N/A N/A N/A N/A NOTE The 5-band equaliser is only available for sample rates up to 48 kHz. The frequency response of the 5-band equaliser at sample rate of 48 kHz is shown graphically in Figure 16 to Figure 20: The cut-off for equaliser bands 1 and 5 is dependent on gain setting. The figures quoted in Table 37 refer to the -1 dB point with the band gain set to -3 dB Datasheet Revision 2.3 45 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 16: Equaliser filter band 1 frequency response at FS = 48 kHz Figure 17: Equaliser filter band 2 frequency response at FS = 48 kHz Figure 18: Equaliser filter band 3 frequency response at FS = 48 kHz Datasheet Revision 2.3 46 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 19: Equaliser filter band 4 frequency response at FS = 48 kHz Figure 20: Equaliser filter band 5 frequency response at FS = 48 kHz 8.3.5.4 5-stage biquad filter There is a stereo 5-stage biquad filter than can be used to provide more flexible filtering of the output signal than can be achieved using the 5-band equaliser. The biquad filters can be used for the implementation of low-pass, high-pass or notch filters that minimise both the power consumption and the latency problems often associated with signals passing through the DSP. The 5-band EQ and the 5-band biquad filter can be used at the same time for greater filtering control. The biquad filter is enabled using out_1_biq_5stage_filter_en and can be muted using out_1_biq_5stage_mute_en. The biquad filter on each channel can be selected independently using out_1l_biq_5stage_sel and out_1r_biq_5stage_sel in the OUT_1L_FILTER_CTRL and OUT_1R_FILTER_CTRL registers. Datasheet Revision 2.3 47 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 21: Single biquad filter stage Each of the five biquad stages has five 16-bit coefficients a0, a1, a2, b1 and b2 as shown in Figure 21. For the five stages the coefficients are numbered a00, a01 and so on as shown in Figure 22. The filter sections are implemented using a direct form one architecture which implements the transfer function shown in Figure 21: H (z) = a 0 + a1 z − 1 + a 2 z − 2 + a 3 z − 3 + a 4 z − 4 1 − b1 z − 1 − b 2 z − 2 Figure 22: Cascade of five biquad filter stages The biquad filters in both left and right channels share the same set of coefficients. Each of the coefficients is stored using two 8-bit registers in a dedicated address space. All of the coefficients are programmed by first writing the coefficient data value to OUT_1_BIQ_5STAGE_DATA and then the coefficient address to OUT_1_BIQ_5STAGE_ADDR. The address location for each of the coefficients is described in Table 38. Each of the 16-bit coefficients are two’s complement values that can be programmed in the range of -2 (0x8000) to +2 (0x7FFF(0)). Carry out checks to ensure that the pre-programmed coefficients result in a stable transfer filter function. The full numeric range of the coefficients is -2 to +1.999938964843750. Datasheet Revision 2.3 48 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 38: Output 5-stage biquad filter coefficient address map Address Name Description 0x01 OUT_1_BIQ_A00_HI Upper byte of a00 coefficient for first output biquad stage 0x02 OUT_1_BIQ_A01_LO Lower byte of a01 coefficient for first output biquad stage 0x03 OUT_1_BIQ_A01_HI Upper byte of a01 coefficient for first output biquad stage 0x04 OUT_1_BIQ_A02_LO Lower byte of a02 coefficient for first output biquad stage 0x05 OUT_1_BIQ_A02_HI Upper byte of a02 coefficient for first output biquad stage 0x06 OUT_1_BIQ_B01_LO Lower byte of b01 coefficient for first output biquad stage 0x07 OUT_1_BIQ_B01_HI Upper byte of b01 coefficient for first output biquad stage 0x08 OUT_1_BIQ_B02_LO Lower byte of b02 coefficient for first output biquad stage 0x09 OUT_1_BIQ_B02_HI Upper byte of b02 coefficient for first output biquad stage 0x0A OUT_1_BIQ_A10_LO Lower byte of a10 coefficient for second output biquad stage 0x0B OUT_1_BIQ_A10_HI Upper byte of a10 coefficient for second output biquad stage 0x0C OUT_1_BIQ_A11_LO Lower byte of a11 coefficient for second output biquad stage 0x0D OUT_1_BIQ_A11_HI Upper byte of a11 coefficient for second output biquad stage 0x0E OUT_1_BIQ_A12_LO Lower byte of a12 coefficient for second output biquad stage 0x0F OUT_1_BIQ_A12_HI Upper byte of a12 coefficient for second output biquad stage 0x10 OUT_1_BIQ_B11_LO Lower byte of b11 coefficient for second output biquad stage 0x11 OUT_1_BIQ_B11_HI Upper byte of b11 coefficient for second output biquad stage 0x12 OUT_1_BIQ_B12_LO Lower byte of b12 coefficient for second output biquad stage 0x13 OUT_1_BIQ_B12_HI Upper byte of b12 coefficient for second output biquad stage 0x14 OUT_1_BIQ_A20_LO Lower byte of a20 coefficient for third output biquad stage 0x15 OUT_1_BIQ_A20_HI Upper byte of a20 coefficient for third output biquad stage 0x16 OUT_1_BIQ_A21_LO Lower byte of a21 coefficient for third output biquad stage 0x17 OUT_1_BIQ_A21_HI Upper byte of a21 coefficient for third output biquad stage 0x18 OUT_1_BIQ_A22_LO Lower byte of a22 coefficient for third output biquad stage 0x19 OUT_1_BIQ_A22_HI Upper byte of a22 coefficient for third output biquad stage 0x1A OUT_1_BIQ_B21_LO Lower byte of b21 coefficient for third output biquad stage 0x1B OUT_1_BIQ_B21_HI Upper byte of b21 coefficient for third output biquad stage 0x1C OUT_1_BIQ_B22_LO Lower byte of b22 coefficient for third output biquad stage 0x1D OUT_1_BIQ_B22_HI Upper byte of b22 coefficient for third output biquad stage 0x1E OUT_1_BIQ_A30_LO Lower byte of a30 coefficient for fourth output biquad stage 0x1F OUT_1_BIQ_A30_HI Upper byte of a30 coefficient for fourth output biquad stage 0x20 OUT_1_BIQ_A31_LO Lower byte of a31 coefficient for fourth output biquad stage 0x21 OUT_1_BIQ_A31_HI Upper byte of a31 coefficient for fourth output biquad stage 0x22 OUT_1_BIQ_A32_LO Lower byte of a32 coefficient for fourth output biquad stage 0x23 OUT_1_BIQ_A32_HI Upper byte of a32 coefficient for fourth output biquad stage 0x24 OUT_1_BIQ_B01_LO Lower byte of b31 coefficient for fourth output biquad stage Datasheet Revision 2.3 49 of 171 15-April-2016 © 2016 Dialog Semiconductor Biquad filter 2 Lower byte of a00 coefficient for first output biquad stage Biquad filter 3 OUT_1_BIQ_A00_LO Biquad filter 4 0x00 Biquad filter 1 out_1_biq_5stage_a ddr DA7218 Ultra-low power stereo codec Address Company confidential Name Description 0x25 OUT_1_BIQ_B31_HI Upper byte of b31 coefficient for fourth output biquad stage 0x26 OUT_1_BIQ_B32_LO Lower byte of b32 coefficient for fourth output biquad stage 0x27 OUT_1_BIQ_B32_HI Upper byte of b32 coefficient for fourth output biquad stage 0x28 OUT_1_BIQ_A40_LO Lower byte of a40 coefficient for fifth output biquad stage 0x29 OUT_1_BIQ_A40_HI Upper byte of a40 coefficient for fifth output biquad stage 0x2A OUT_1_BIQ_A41_LO Lower byte of a41 coefficient for fifth output biquad stage 0x2B OUT_1_BIQ_A41_HI Upper byte of a41 coefficient for fifth output biquad stage 0x2C OUT_1_BIQ_A42_LO Lower byte of a42 coefficient for fifth output biquad stage 0x2D OUT_1_BIQ_A42_HI Upper byte of a42 coefficient for fifth output biquad stage 0x2E OUT_1_BIQ_B41_LO Lower byte of b41 coefficient for fifth output biquad stage 0x2F OUT_1_BIQ_B41_HI Upper byte of b41 coefficient for fifth output biquad stage 0x30 OUT_1_BIQ_B42_LO Lower byte of b42 coefficient for fifth output biquad stage 0x31 OUT_1_BIQ_B42_HI Upper byte of b42 coefficient for fifth output biquad stage 8.3.5.5 Output dynamic range extension The output dynamic range extension (DRE) block controls both the analog headphone amplifier gain and the digital output gain. It applies equal and opposite adjustments to the analog and digital gains so that the total output path gain remains constant while the output dynamic range is extended. The dominant noise source in the output path is the headphone amplifier. The noise floor can be lowered by reducing the headphone amplifier gain whenever the output signal is small enough such that the compensating increase in digital gain will not cause clipping at the input to the DAC. DRE can be enabled on either left, right or both output channels using dgs_enable. The input signal level at which the DRE starts swapping gains can be set in the range of -90 dB to 0 dB in 6 dB steps using dgs_signal_lvl. To prevent clipping, the input signal level at which all of the applied DRE steps are removed can be set in the range of -42 dB to 0 dB in 6 dB steps using dgs_anticlip_lvl. The maximum number of 1.5 dB gain steps that the DRE is allowed to apply can be controlled using dgs_steps. The response time of the leaky integrator used to track the signal level at the input of the DRE is determined by the fraction of the signal added at each step. The fall rate is set by the fraction added when the signal is smaller than the current average, which can be programmed in the range 1/65536 to 1/4 using dgs_fall_coeff. The rise rate is set by the fraction added when the signal is larger than the current average, which can be programmed in the range 1/16384 to 1 using dgs_rise_coeff. Ramping of any changes in gain levels is enabled by setting dgs_ramp_en = 1. When ramping is being performed, the changes in gain are made in 1.5 dB steps, with the maximum number of 1.5 dB steps controlled by dgs_steps. Finer control of the ramping steps is provided if dgs_subr_en = 1. If dgs_subr_en = 1, each gain change of 1.5 dB is performed in smaller steps. It is possible to disable the ramping of the 1.5 dB gain steps by setting dgs_ramp_en = 0, and similarly it is possible to disable the sub-ranging between the 1.5 dB gain steps by setting dgs_subr_en = 0. Note that clearing either of these two bits is likely to produce unacceptable audio artefacts such as pops and clicks. Datasheet Revision 2.3 50 of 171 15-April-2016 © 2016 Dialog Semiconductor Biquad filter 5 out_1_biq_5stage_a ddr DA7218 Ultra-low power stereo codec 8.3.5.6 Company confidential DAC noise gate The DAC noise gate can be used to automatically mute the outputs when the average signal level at the output of both left and right channel DACs falls below a programmed noise threshold for longer than a programmed hold time. The DAC noise gate is enabled using dac_ng_en. The threshold below which the noise gate is activated can be set in the range of -102 dB to -60 dB in 6 dB steps using dac_ng_on_threshold. The threshold above which the noise gate deactivates can be set in the same range using dac_ng_off_threshold. It is recommended to set dac_ng_off_threshold > dac_ng_on_threshold to provide some hysteresis. The number of samples for which the DAC output signal must be below the on-threshold before the noise gate is activated can be set to 256, 512, 1024 or 2048 using dac_ng_setup_time. The noise gate is deactivated as soon as the signal level rises above the off threshold. Prior to muting the output the gain is ramped down to minimum, and after un-muting the output the gain is ramped back up to its original value. The ramp rates can be adjusted using dac_ng_rampdn_rate and dac_ng_rampup_rate. 8.3.5.7 Digital mixer The DA7218 codec contains a flexible digital mixer. Any or all of the seven digital inputs (four input filters, one tone generator, and two DAI inputs) can be routed to any or all of the six digital outputs (Output Filter 1 and Output Filter 2, and four DAI outputs) with a programmable gain on each of the 42 possible paths. The names of the registers that specify the data source, and the data output, take the form ‘_src’. Each of these seven-bit registers uses one of its bit positions to select a signal source. These registers and the bit positions corresponding to each of the seven possible signal source are listed in Table 39. Example: Setting outdai_1l_src[2] = 1 selects source data from Input Filter 2L (determined by bit position [2]) and passes it to Output DAI 1L. The gain on each of the 42 signal paths (seven possible inputs to six possible outputs) are independently controllable using registers whose names take the form ‘__gain’. These register fields are listed in Table 40. Every register field uses the same set of settings to provide a gain range of -42 dB to 4.5 dB in -1.5 dB steps. The full set of possible gain settings for each register is listed in Table 41. Example: Setting out_dai_1l_infit_2r_gain = 01001 provides -28.5 dB gain on the signal path Input Filter 2L to Output DAI 1L. See Figure 23.for the input-to-output paths Datasheet Revision 2.3 51 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Figure 23: Possible digital mixer routings Datasheet Revision 2.3 52 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 39: Register names [bit positions] for selecting digital mixer source and output Output stream directed to… Input source DAI 1L DAI 1R OUT FILT 1L OUT FILT 1R OUT FILT 2L OUT FILT 2R IN FILT 1L outdai_1l_src [0] outdai_1r_src [0] outfilt_1l_src [0] outfilt_1r_src [0] outfilt_2l_src [0] outfilt_2r_src [0] IN FILT 1R outdai_1l_src [1] outdai_1r_src [1] outfilt_1l_src [1] outfilt_1r_src [1] outfilt_2l_src [1] outfilt_2r_src [1] IN FILT 2L outdai_1l_src [2] outdai_1r_src [2] outfilt_1l_src [2] outfilt_1r_src [2] outfilt_2l_src [2] outfilt_2r_src [2] IN FILT 2R outdai_1l_src [3] outdai_1r_src [3] outfilt_1l_src [3] outfilt_1r_src [3] outfilt_2l_src [3] outfilt_2r_src [3] TONE GEN outdai_1l_src [4] outdai_1r_src [4] outfilt_1l_src [4] outfilt_1r_src [4] outfilt_2l_src [4] outfilt_2r_src [4] DAI 1L outdai_1l_src [5] outdai_1r_src [5] outfilt_1l_src [5] outfilt_1r_src [5] outfilt_2l_src [5] outfilt_2r_src [5] DAI 1R outdai_1l_src [6] outdai_1r_src [6] outfilt_1l_src [6] outfilt_1r_src [6] outfilt_2l_src [6] outfilt_2r_src [6] NOTE For each listed bit position in each register, 0 = source/output combination disabled and 1 = source/output combination enable Table 40: Cross reference listing the gain-control registers for all digital mixer sources and outputs Output stream Input source DAI 1L DAI 1R OUT FILT 1L OUT FILT 1R OUT FILT 2L OUT FILT 2R IN FILT 1L outdai_1l_infilt outdai_1r_infilt outfilt_1l_infilt_ outfilt_1r_infilt outfilt_2l_infilt_ outfilt_2r_infilt _1l_gain _1l_gain 1l_gain _1l_gain 1l_gain _1l_gain IN FILT 1R outdai_1l_infilt outdai_1r_infilt outfilt_1l_infilt_ outfilt_1r_infilt outfilt_2l_infilt_ outfilt_2r_infilt _1r_gain _1r_gain 1r_gain _1r_gain 1r_gain _1r_gain IN FILT 2L outdai_1l_infilt outdai_1r_infilt outfilt_1l_infilt_ outfilt_1r_infilt outfilt_2l_infilt_ outfilt_2r_infilt _2l_gain _2l_gain 2l_gain _2l_gain 2l_gain _2l_gain IN FILT 2R outdai_1l_infilt outdai_1r_infilt outfilt_1l_infilt_ outfilt_1r_infilt outfilt_2l_infilt_ outfilt_2r_infilt _2r_gain _2r_gain 2r_gain _2r_gain 2r_gain _2r_gain TONE GEN outdai_1l_tone outdai_1r_tone outfilt_1l_tone gen_gain gen_gain gen_gain outfilt_1r_tone gen_gain outfilt_2l_tone gen_gain outfilt_2r_tone gen_gain DAI 1L outdai_1l_inda outdai_1r_inda outfilt_1l_indai outfilt_1r_indai outfilt_2l_indai outfilt_2r_indai i_1l_gain i_1l_gain _1l_gain _1l_gain _1l_gain _1l_gain DAI 1R outdai_1l_inda outdai_1r_inda outfilt_1l_indai outfilt_1r_indai outfilt_2l_indai outfilt_2r_indai i_1r_gain i_1r_gain _1r_gain _1r_gain _1r_gain _1r_gain NOTE The gain settings for each gain-control register listed above are listed in Table 41 Datasheet Revision 2.3 53 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 41: Gain settings and values for all registers listed in Table 40 Gain register setting Value (dB) Gain register setting Value (dB) 00000 -42.0 10000 -18.0 00001 -40.5 10001 -16.5 00010 -39.0 10010 -15.0 00011 -37.5 10011 -13.5 00100 -36.0 10100 -12.0 00101 -34.5 10101 -10.5 00110 -33.0 10110 -9.0 00111 -31.5 10111 -7.5 01000 -30.0 11000 -6.0 01001 -28.5 11001 -4.5 01010 -27.0 11010 -3.0 01011 -25.5 11011 -1.5 01100 -24.0 11100 (default setting on all registers) 0.0 01101 -22.5 11101 1.5 01110 -21.0 11110 3.0 01111 -19.5 11111 4.5 8.3.5.8 Digital gain Input channel gain The four input filter channels can be set to apply gain in the range of -83.25 dB to +12 dB in 0.75 dB steps by programming in_1l_digital_gain, in_1r_digital_gain, in_2l_digital_gain, and in_2r_digital_gain. Output channel gain The two output filter channels can be set to apply gain in the range of -83.25 dB to +108 dB in 0.75 dB steps by programming out_1l_digital_gain and out_1r_digital_gain. Datasheet Revision 2.3 54 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.4 8.4.1 Company confidential Output paths Digital to analog converter The DA7218 codec includes a stereo audio digital to analog converter (DAC). Left and right channels of the DAC are independently and automatically enabled whenever the corresponding output filter channel is enabled. The DAC is clocked at 3.072 MHz or 2.8224 MHz depending on the output sample rate (SR2). Left and right channels of the DAC are independently and automatically enabled whenever the corresponding output filter channel is enabled. 8.4.2 Headphone amplifiers Each headphone path has one finely adjustable amplifier (MIXOUT_L_GAIN and MIXOUT_R_GAIN) providing a gain of -1.0 dB to 0 dB in 0.5 dB steps. These are followed by a more powerful headphone amplifier stage providing a gain of –57 dB to +6 dB in 1.5 dB steps. Together they provide a total gain range of -58 dB to +6 dB in 0.5 dB steps. Figure 24: Headphone output paths The left-channel amplifier (MIXOUT_L_CTRL) is enabled by setting mixout_l_amp_en = 1. The gain can be set in the range of –1.0 dB to 0 dB in 0.5 dB steps using mixout_l_amp_gain. This setting is static and is not synchronised with signal zero crossings and cannot be ramped. This amplifier is used to fine tune the overall analog gain level in the DAC to headphone path. The right channel output buffer (MIXOUT_R_CTRL) is controlled in the same manner. The two finely adjustable amplifiers MIXOUT_L_GAIN and MIXOUT_R_GAIN offer no mixing capabilities. They allow additional fine-tuning of the gain on the headphone outputs from -1.0 dB to 0 dB in 0.5 dB steps. The amplifiers are configured to be single-ended and to operate in true-ground mode. The headphone loads are connected between HPL and GND for the left headphone, and between HPR and GND for the right. The mode in which the headphone amplifiers operate is controlled using the HP_DIFF_CTRL register. The specific mode of operation is controlled using the hp_amp_diff_mode_en bit which must be set to 0 for single ended mode (the default setting = 0). The supply mode can be set using hp_amp_single_supply_en, which must be left set to 0. This register bit is protected to prevent accidental damage to the device and must be unlocked by writing 0xC3 to HP_DIFF_UNLOCK. Datasheet Revision 2.3 55 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential The left-channel headphone amplifier (HP_L_CTRL) is enabled by setting hp_l_amp_en = 1. The output stage is enabled independently by setting hp_l_amp_oe = 1. The amplifier gain can be set in the range of –57 dB to +6 dB in 1.5 dB steps using hp_l_amp_gain. Gain updates can be ramped through all intermediate values by setting hp_l_amp_ramp_en = 1. This ramp setting overrides the settings of hp_l_amp_zc_en. To prevent zipper noise when gain ramping is selected, the gain is ramped through additional sub-range gain steps. Alternatively, gain updates can be synchronised with signal zero-crossings by setting hp_l_amp_zc_en = 1. If no zero-crossing is detected within the timeout period, then the gain update is applied unconditionally. The timeout period is approximately 0.1 s, and is not user-configurable. The amplifier can be muted by setting hp_l_amp_mute_en = 1. The amplifier can be put in its minimum gain configuration by setting hp_l_amp_min_gain_en = 1. If either zero-crossing or ramping are enabled when minimum gain is set, the ramping or the zero crossing or both will be performed while activating the minimum gain. The right-channel headphone amplifier (HP_R_CTRL) is controlled in the same manner. Datasheet Revision 2.3 56 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 42: hp_l_amp_gain and hp_r_amp_gain settings hp_l_amp_gain and hp_r_amp_gain 000000 to 010100 Datasheet Gain (dB) hp_l_amp_gain and hp_r_amp_gain Gain (dB) hp_l_amp_gain and hp_r_amp_gain Gain (dB) 010101 -57.0 101011 -24.0 010110 -55.5 101100 -22.5 010111 -54.0 101101 -21.0 011000 -52.5 101110 -19.5 011001 -51.0 101111 -18.0 011010 -49.5 110000 -16.5 011011 -48.0 110001 -15.0 011100 -46.5 110010 -13.5 011101 -45.0 110011 -12.0 011110 -43.5 110100 -10.5 011111 -42.0 110101 -9.0 100000 -40.5 110110 -7.5 100001 -39.0 110111 -6.0 100010 -37.5 111000 -4.5 100011 -36.0 111001 -3.0 100100 -34.5 111010 -1.5 100101 -33.0 111011 0.0 100110 -31.5 111100 1.5 100111 -30.0 111101 3.0 101000 -28.5 111110 4.5 101001 -27.0 111111 6.0 101010 -25.5 Reserved Revision 2.3 57 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.4.3 Company confidential Headphone detection DA7218 contains two forms of headphone detection. These are detection of the presence of a headphone, and detection of the impedance of the inserted device. These enable the host to determine whether or not a headphone has been plugged in to the device, and whether the headphone is mono or stereo. or a high-impedance or low-impedance load. 8.4.4 Jack detection Jack detection is enabled by setting hpldet_jack_en to 1, which enables an internal current source on the HPLDET pin. The insertion of a headphone must cause the HPLDET signal to be pulled low, either via an isolated switch in the headphone socket or by the HPL terminal of the headphone jack shorting HPL to the headphone detect pin in the socket. The transition on HPLDET can be used to trigger an interrupt to the host as described in Section 8.8. The threshold level for jack detection can be set in the range of 84% to 96% of VDD using hpldet_jack_thr. The number of debounce measurements required before triggering an interrupt can be adjusted using hpldet_jack_debounce, and the interval between measurements can be set using hpldet_jack_rate. The jack detector comparator output can be inverted for switches that are normally closed by setting hpldet_comp_inv = 1. The comparator hysteresis can enabled using hpldet_hyst_en. 8.4.4.1 Automatic MICBIAS1 control As the headphone jack is withdrawn from the socket, the HPL and HPR connections in the jack will come into contact with the MIC and GND contacts in the socket. If MICBIAS1 is enabled when the jack is withdrawn, this can result in a loud pop which is audible in the headphones. In order to prevent this, the MICBIAS1 output can be automatically discharged as soon as the jack withdrawal is detected. This MICBIAS1 discharge is enabled by setting hpldet_discharge_en = 1 and hpldet_jack_en = 1. On reinsertion of the jack, MICBIAS1 will be automatically re-enabled if hpldet_discharge_en = 1 and MICBIAS1 is enabled. 8.4.5 Mono/stereo and load detection Once a jack has been inserted, it is possible to detect whether it is a stereo or mono headphone. This requires a software sequence to perform the following steps: 9. 10. 11. 12. 13. Select the tone generator to the headphone output path Enable both headphone outputs Ramp a DC level onto the headphone outputs using the tone generator Enable mono/stereo detection using hp_amp_stereo_detect_en. Read the mono/stereo status of the headphone from hp_amp_stereo_detect_statusDisable mono/stereo detection 14. Ramp the headphone outputs back to 0 V using the tone generator It is also possible to detect line loads (or open-circuit) independently on HPL and HPR outputs using hp_amp_load_detect_en. Datasheet Revision 2.3 58 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.4.6 Company confidential Charge pump control The charge pump is enabled by asserting cp_en in the CP_CTRL register. Once enabled, the charge pump can be controlled manually or automatically. When under manual control (cp_mchange = 00), the output voltage level is directly determined by cp_mod. The amount of charge stored, and therefore the voltage generated, by the charge pump is controlled by the charge pump controller. As the power consumed by devices such as amplifiers is proportional to Voltage, significant power savings are available by matching the charge pump’s output with the system’s power requirement. Under automatic control, there are three modes of operation that are determined by the cp_mchange setting. All four modes (one manual and three automatic) are described in Table 43. Table 43: Charge pump output voltage control Charge pump tracking mode cp_mchange Charge pump output voltage 00 Manual The charge pump’s output voltage is determined by the settings of CP_MOD 01 Voltage level depends on the programmed gain setting The charge pump controller monitors the PGA volume settings and generates the minimum voltage that is required to drive a full-scale signal at the current gain level. 10 Voltage level depends on the DAC signal envelope The charge pump controller monitors the DAC signal, and generates the voltage that is required to drive a full-scale output at the current DAC signal volume level 11 Voltage level depends on the signal magnitude and the programmed gain setting The charge pump monitors both the programmed volume settings and the actual signal size, and generates the appropriate output voltage This is the most power-efficient mode of operation Details When cp_mchange is set to 10 (tracking DAC signal size, described in Table 43) or cp_mchange is set to 11 (tracking the output signal size), the charge pump switches its supply between the VDD rail and the VDD/2 rail depending on its power requirements. When low output voltages are needed, the charge pump saves power by using the lower-voltage VDD/2 rail. The switching point between using the VDD rail and the VDD/2 rail is determined by the cp_thresh_vdd2 register setting. The switching points determined by cp_thresh_vdd2 vary between the two cp_mchange modes, and are summarised Table 44 and Table 45. Table 44: cp_thresh_vdd2 settings in DAC signal tracking mode (cp_mchange = 10) cp_thresh_vdd2 setting Approximate switching pointError! Reference source not found. 0x01 -30 dBFS Do not use. Very power-inefficient as nearly always VDD/1 0x03 -24 dBFS Not recommended. Very power-inefficient as nearly always VDD/1 0x07 -18 dBFS May be used but not power efficient 0x0E -12 dBFS May be used 0x10 -10 dBFS Recommended setting 0x3F to 0x13 Datasheet Notes Reserved, do not use Revision 2.3 59 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 45: cp_thresh_vdd2 settings in output signal tracking mode (cp_mchange = 11) cp_thresh_vdd2 setting Approximate switching point 0x00 Never Not recommended. Always VDD/1 mode 0x01 Never Not recommended. Always VDD/1 mode 0x02 -32 dBFS Not recommended. Power-inefficient as nearly always VDD/1 0x03 -24 dBFS May be used 0x04 -20 dBFS May be used 0x05 -17 dBFS May be used 0x06 -15 dBFS Recommended setting 0x07 -13 dBFS May be used 0x08 -12 dBFS May be used 0x09 -11 dBFS May be used 0x0A -10 dBFS May be used 0x0B -9 dBFS Not recommended. VDD/2 begins to clip 0x0C Never Not recommended. Always VDD/2 mode 0x0D Never Not recommended. Always VDD/2 mode 0x0E Never Not recommended. Always VDD/2 mode 0x0F Never Not recommended. Always VDD/2 mode 8.4.7 Notes Tracking the demands on the charge pump output There are three points at which the demands on the charge pump can be tracked. These tracking points are determined by cp_mchange. 8.4.7.1 cp_mchange = 00 (manual mode) If cp_mchange = 00, the voltage level is controlled by the CP_MOD setting. 8.4.7.2 cp_mchange = 01 (tracking the PGA gain setting) If cp_mchange = 01, the PGA gain setting is tracked, and provides feedback to boost the clock frequency when necessary. 8.4.7.3 cp_mchange = 10 (tracking the DAC signal setting) If cp_mchange = 01, the size of the DAC signal is tracked, and provides the feedback to boost the clock frequency when necessary. 8.4.7.4 cp_mchange = 11 (tracking the output signal magnitude) If cp_mchange = 01, the magnitude of the output signal is tracked, and provides the feedback to boost the clock frequency when necessary. Datasheet Revision 2.3 60 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.4.8 Company confidential Specifying clock frequencies when tracking the charge pump output demand cp_fcontrol specifies the frequency of the charge pump clock. The frequency is fixed and is set manually if cp_mchange = 00 (see section 8.4.7.1). The available frequency settings are 1 MHz (the absolute maximum), and 540, 254, 125 and 63 kHz. If cp_mchange does not = 00, the charge pump load is monitored and the clock frequency adjusted accordingly to allow the charge pump to supply the required current. Clock frequency varies depending on the charge pump requirements, and the cp_fcontrol settings specify the minimum frequency at which the clock will run. The maximum frequency is always 1 MHz. In addition to the cp_fcontrol settings outlined above, and which specify the minimum clock frequency, there is an extra setting of cp_fcontrol = 101 which has no minimum frequency. At this setting, the clock frequency is under the complete control of the tracking and feedback mechanism. The frequency can vary from 0 Hz when there is no load on the charge pump and no component leakage, up to the maximum of 1 MHz. In general this setting can be left at its default value of 001. 8.4.9 Other charge pump controls When a higher charge pump output voltage is needed, the charge pump increases its output at the fastest rate possible given the controls and settings in that currently in place. Once the higher output voltage is no longer needed, the charge pump controller waits for a period determined by the cp_tau_delay setting before reducing the output voltage. For best performance Dialog Semiconductor recommend setting cp_tau_delay to 16 ms or greater. cp_small_switch_freq_en enables a low-load, low-power switching mode. If cp_small_switch_freq_en is enabled and cp_fcontrol is set to a value between 000 and 100, any feedback from the analog level detector results in a switch from low-power to full-power. Full-power is maintained for one cp_tau_delay period after the pulse, any subsequent pulses restart the cp_tau_delay period. If cp_fcontrol = 101, the first feedback from the analog level detector primes the change to full-power mode. If another pulse occurs within 32 clock cycles of the first feedback from the analog level detector, full power is enabled for one cp_tau_delay period. 8.4.10 True-ground supply mode In true-ground supply mode, the charge pump must be enabled to generate the ground-centred supply rails for the amplifiers. 8.5 Phase locked loop The DA7218 contains a Phase Locked Loop (PLL) that can be used to generate the required 11.2896 MHz or 12.288 MHz internal system clock when a frequency of between 2 and 54 MHz is applied to MCLK. This allows sharing of clocks between devices in an application, reducing total system cost. For example, the codec may operate from common 13 MHz or 19.2 MHz system clock frequency. 8.5.1 PLL bypass mode If an MCLK signal of 11.2896 MHz,12.288 MHz, 22.5792 MHz, 24.576 MHz, 45.1584 MHz,or 49.152 MHz is available, the PLL is not required and should be disabled to save power. PLL bypass mode is activated by setting pll_mode = 00. In this mode the PLL is bypassed and an audio frequency clock is applied to the MCLK pin of the codec. The required clock frequency depends on the sample rate at which the audio DACs and ADCs are operating. These clock frequencies are summarized in Table 46 for the range of DAC and ADC sample rates that can be configured using the SR register. Datasheet Revision 2.3 61 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 46: Sample rate control register and corresponding system clock frequency Sample rate, FS (kHz) SR register System clock frequency (MHz) 8 0001 12.288 11.025 0010 11.2896 12 0011 12.288 16 0101 12.288 22.05 0110 11.2896 24 0111 12.288 32 1001 12.288 44.1 1010 11.2896 48 1011 12.288 88.2 1110 11.2896 96 1111 12.288 If digital playback or record is required in bypass mode then the MCLK frequency should be set to 11.2896 MHz,12.288 MHz, 22.5792 MHz, 24.576 MHz, 45.1584 MHz,or 49.152 MHz and pll_indiv should be programmed accordingly. If no valid MCLK is detected, the output of the internal reference oscillator is used instead. However in this case only analog bypass paths may be used. 8.5.2 Normal PLL mode (DAI master) The PLL is enabled by asserting pll_mode = 01. Once the PLL is enabled and has achieved phase lock, PLL bypass mode is disabled and the output of the PLL is used as the system clock. The PLL input divider register (pll_indiv) is used to reduce the PLL reference frequency to the usable range of 2 MHz to 54 MHz as shown in Table 47, this reduces the PLL reference frequency according to the following equation: FREF = FMCLK ÷ N Table 47: PLL input divider MCLK input frequency (MHz) Input divider, (÷N) pll_indiv register (0x27 [3:2]) 2–5 ÷1 000 5 – 10 ÷2 001 10 – 20 ÷4 010 20 – 40 ÷8 011 40 – 54 ÷16 100 The value of the PLL feedback divider is used to set the voltage controlled oscillator (VCO) frequency to eight times the required system clock frequency (see Table 46). FVCO = FREF * PLL feedback divider The value of the PLL feedback divider is an unsigned number in the range of 0 to 128. It consists of seven integer bits and thirteen fractional bits split across three registers: ● PLL_INTEGER holds the seven integer bits Datasheet Revision 2.3 62 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential ● PLL_FRAC_BOT holds the top bits (MSB) of the fractional part of the divisor ● PLL_FRAC_BOT holds the bottom bits (LSB) of the fractional part of the divisor 8.5.3 Example calculation of the feedback divider setting: Example: A codec operating with a sample rate (FS) = 48 kHz and a reference input clock frequency of 12.288 MHz. The required output frequency is 98.304 MHz. The reference clock input = 12.288 MHz, which falls in the range 10-20 MHz, so pll_indiv must be set to 0b010 dividing the reference input frequency by 4 (see Table 47). The formula for calculating the feedback divider is: Feedback divider (F) = VCO output frequency * input divider (pll_indiv) / reference input clock Feedback divider = (98.304 * 4) / 12.288 = 32 So ● pll_fbdiv_integer (holding the seven integer bits) = 0x20 ● pll_fbdiv_frac_top (holding the top bits (MSB) of the fractional part of the divisor) = 0x00 ● pll_fbdiv_frac_bot (holding the bottom bits (LSB) of the fractional part of the divisor) = 0x00 Table 48 shows example register settings that will configure the PLL when using a 13 MHz, 15 MHz or 19.2 MHz clock. Note that any MCLK input frequency between 2 MHz and 54 MHz is supported. pll_indiv must be used to reduce the PLL reference frequency to the usable range of 2 MHz to 5 MHz as shown in Table 48. Table 48: Example PLL configurations MCLK input frequency (MHz) System clock frequency (MHz) pll_mode register 13 11.2896 13 PLL_FRAC_TOP register PLL_FRAC_BOT register PLL_INTEGER register 0x01 0x19 0x45 0x1B 12.288 0x01 0x07 0xEA 0x1E 15 11.2896 0x01 0x02 0xB4 0x18 15 12.288 0x01 0x06 0xDC 0x1A 19.2 11.2896 0x01 0x1A 0x1C 0x12 19.2 12.288 0x01 0x0F 0x5C 0x14 Datasheet Revision 2.3 63 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.5.4 Company confidential Sample rate matching PLL mode (DAI slave) Sample rate matching (SRM) mode enables the PLL output clock to be synchronized to the incoming WCLK signal on the DAI. The SRM PLL mode is enabled by setting pll_mode = 10. When using the digital audio interface in slave mode with the SRM enabled, removing and reapplying the DAI interface word clock WCLK may cause the PLL lock to be lost. To re-lock the PLL disable the SRM (pll_mode = 00), reset the PLL by re-writing to register PLL_INTEGER, and then reenable the SRM (pll_mode = 10) after the DAI WCLK has been reapplied. When switching sample rates between 44.1 kHz and 48 kHz (or between the multiples of these sample rates), SRM must be disabled then re enabled using register bit pll_mode. 8.5.5 MCLK input MCLK is the master clock input which must be in the range of 2 MHz to 54 MHz. MCLK can be applied as a full-amplitude square wave, or as a low-amplitude sine wave (if the MCLK squarer circuit has been enabled). The clock squarer circuit is enabled by writing pll_mclk_sqr_en = 1. The clock squarer circuit allows a sine wave or other low amplitude clock (down to 300 mVpp) to be applied to the chip. The MCLK input is AC coupled on chip when using the clock squarer circuit. 8.5.5.1 MCLK detection A clock detection circuit will set bit [0] of pll_srm_status = 1 whenever the applied MCLK frequency is above the minimum detection frequency of approximately 1 MHz. Whenever this bit is High, the MCLK signal is selected as the clock input to the PLL. 8.5.6 Audio reference oscillator For best audio performance, a system clock within the specified range is required. The DA7218 codec has an internal reference oscillator that provides the system clock when there is no valid MCLK signal. The reference oscillator is automatically enabled whenever the codec is in ACTIVE mode and the MCLK frequency is below the absolute minimum frequency of 1 MHz. When the codec enters STANDBY mode, the oscillator is automatically disabled to save power. 8.5.6.1 Oscillator calibration The reference oscillator can be calibrated for use in low-power applications where no MCLK signal is supplied but where the system clock needs to be reasonably accurate. For example when using the level detection, the device can be set to automatically stream data to the host. If the oscillator has been calibrated then the DAI clocks will run within 5% of the nominal frequency, allowing the data to be processed correctly by the host. To perform this calibration, the device requires a valid WCLK signal on the DAI (in either master or slave mode). The SRM block uses this as a reference against which to tune the oscillator. See section 8.5.6.2 for the calibration procedure. The entire calibration block is enabled by setting pll_refosc_cal_en = 1. This enables both the initial calibration of the reference oscillator and the later use of the calibrated oscillator. As long as the reference oscillator block has been enabled, the oscillator can be calibrated by writing 1 to pll_refosc_cal_start. Once the calibration has been completed, the pll_refosc_cal_start bit will return a 0 value. The 5-bit calibration value is stored in pll_refosc_cal_ctrl. The reference oscillator runs automatically when in ACTIVE mode and when there is no valid MCLK signal. In STANDBY mode, the oscillator is automatically disabled to save power. Datasheet Revision 2.3 64 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.5.6.2 Company confidential Procedure for calibrating the reference oscillator 1. Apply a valid WCLK frequency 2. Set register PLL_REFOSC_CAL (address 0x98) = 0x80 3. The reference oscillator is now calibrated and will run whenever it is required 8.5.7 Internal system clock The internal system clock (SYSCLK) from which all other clocks are derived is normally one of two possible frequencies: ● 12.288 MHz for SR1 and SR2 from the 48 kHz family (8, 12, 16, 24, 32, 48, 96 kHz) ● 11.2896 MHz for SR1 and SR2 from the 44.1 kHz family (11.025, 22.05, 44.1, 88.2 kHz) The only exception to this is when the DAI is not used. In this case there is no requirement for a specific internal system clock frequency. 8.6 8.6.1 Reference generation Voltage references The audio circuits use supply-derived references of 0.45*VDD (VMID) and 0.9*VDD (DACREF). There is also bandgap-derived fixed voltage reference of 1.2 V (VREF). All three voltage references require off-chip decoupling capacitors (see section 11 for further details). Both VREF and VMID are automatically enabled whenever the device enters ACTIVE mode. They are automatically disabled when entering STANDBY mode. The VMID reference comes from a high-resistance voltage divider, which combines with the decoupling capacitor to create a large RC (resistance-capacitance) time constant. This ensures a noise-free VMID reference, however the charge time is longer. The bandgap reference VREF also takes time to charge its decoupling capacitor, but an internal timer ensures that no circuit that requires VREF is enabled until VREF has reached 1.2 V. The DACREF voltage reference is produced from VMID by a times-two buffer so is capable of charging its decoupling capacitor quickly. 8.6.2 Bias currents DA7218 has a master bias current generation block that is enabled by default using the bias_en bit. Master bias current generation is set to on by default. Each sub-system has its own local current generation block, which is automatically enabled whenever any of its sub-blocks are enabled. 8.6.3 Voltage levels 8.6.3.1 Digital regulator The digital engine is supplied from VDD. An internal LDO regulator can produce the internal rail VDDDIG. The regulator is controlled using the LDO_CTRL register and is enabled using the ldo_en bit. VDDDIG must not be used to drive external circuitry. When the LDO is disabled, the regulator is in bypass mode and VDDDIG is shorted to VDD. When the LDO is enabled, VDDDIG is regulated by the setting of ldo_en (see Table 49:). Datasheet Revision 2.3 65 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 49: Audio sub-system digital LDO level ldo_level_select setting LDO level (V) 00 1.05 01 1.10 10 1.20 11 1.40 8.6.3.2 Digital input/output pins voltage level The digital input/output (I/O) pins can be set to operate in either a high voltage (2.5 V to 3.6 V) or low voltage (1.5 V to 2.5 V) range using the io_voltage_level bit. This bit should be set to the relevant value based on the IO voltage level of the host. I2C control interface 8.7 The DA7218 is completely software-controlled from the host via register writes. The DA7218 2 provides an I C compliant serial control interface to access these registers. Data is shifted into or out of the DA7218 under the control of the host processor, which also provides the serial clock. 2 2 The I C clock is supplied by the SCL line and the bi-directional I C data is carried by the SDA line. 2 The I C interface is open-drain supporting multiple devices on a single line. The bus lines have to be pulled High by external pull-up resistors (1 kΩ to 20 kΩ range). The attached devices only drive the bus lines Low by connecting them to ground. This means that two devices cannot conflict if they drive the bus simultaneously. 2 Table 50: Device 7-bit I C slave addresses 2 Pin AD Device I C address High 1B Low 1A In standard/fast mode the highest frequency of the bus is 1 MHz. The exact frequency can be determined by the application and does not have any relation to the DA7218 internal clock signals. DA7218 will follow the host clock speed within the described limitations and does not initiate any clock arbitration or slow down. In high-speed mode the maximum frequency of the bus can be increased up to 3.4 MHz. This mode is supported if the SCL line is driven with a push-pull stage from the host and if the host enables an external 3 mA pull-up at the SDA pin to decrease the rise time of the data. In this mode the SDA line on DA7218 is able to sink up to 12 mA. In all other respects the high speed mode behaves as the 2 standard/fast mode. Communication on the I C bus always takes place between two devices, one 2 acting as the master and the other as the slave. The DA7218 will only operate as a SLAVE in I C communication. Datasheet Revision 2.3 66 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential 2 Figure 25: Schematic of the I C control interface bus 2 All data is transmitted across the I C bus in groups of 8 bits. To send a bit the SDA line is driven to the intended state while the SDA is Low (a LOW on SDA indicates a zero bit). Once the SDA has settled, the SCL line is brought High and then Low. This pulse on SCL clocks the SDA bit into the receiver’s shift register. A two byte serial protocol is used containing one byte for address and one byte for data. Data and address transfer is transmitted MSB first for both read and write operations. All transmission begins with the START condition from the master while the bus is in the IDLE state (the bus is free). It is initiated by a High to Low transition on the SDA line while the SCL is in the High state (a STOP condition is indicated by a Low to High transition on the SDA line while the SCL line is in the High state). 2 Figure 26: Timing of I C START and STOP Conditions 2 The I C bus is monitored by DA7218 for a valid SLAVE address whenever the interface is enabled. It responds with an Acknowledge immediately when it receives its own slave address. The Acknowledge is achieved by pulling the SDA line Low during the following clock cycle (white blocks marked with ‘A’ in Figure 27 to Figure 30). The protocol for a register write from master to slave consists of a start condition, a slave address with read/write bit and the 8-bit register address followed by 8 bits of data terminated by a STOP condition (the DA7218 responds to all bytes with an Acknowledge). This is illustrated in Figure 27. S SLAVE addr 7-bits W A 1-bit REG addr 8-bits Master to Slave S = START condition P = STOP condition A DATA A P 8-bits Slave to Master A = Acknowledge (low) W = Write (low) 2 Figure 27: I C byte write (SDA signal) When the host reads data from a register it first has to write access DA7218 with the target register address and then read access DA7218 with a repeated START, or alternatively a second START Datasheet Revision 2.3 67 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential condition. After receiving the data the host sends a Not Acknowledge (NAK) and terminates the transmission with a STOP condition: S SLAVEaddr W A 7-bits 1-bit A Sr SLAVEaddr R 8-bits S SLAVEaddr W A 7-bits REG addr 1-bit 7-bits REG addr A P DATA 7-bits A * P 8-bits S SLAVEaddr R 8-bits Master to Slave A 1-bit A 1-bit * DATA A P 8-bits Slave to Master S = START condition Sr = Repeated START condition P = STOP condition A = Acknowledge (low) * A = Not Acknowledge (NAK) W = Write (low) R = Read (high) 2 Figure 28: Examples of the I C byte read (SDA line) Consecutive (Page mode) Read-out mode (cif_i2c_write_mode = 0) is initiated from the master by 2 sending an Acknowledge instead of Not Acknowledge (NAK) after receipt of the data word. The I C 2 control block then increments the address pointer to the next I C address and sends the data to the master. This enables an unlimited read of data bytes until the master sends a NAK directly after the 2 receipt of data, followed by a subsequent STOP condition. If a non-existent I C address is read out, the DA7218 will return code zero. S SLAVEaddr W A 7-bits 1 bit S SLAVEaddr W A 7-bits REG addr A Sr SLAVEaddr R A 8-bits 7-bits REG addr 1-bit 1-bit A P A 8-bits 7-bits 1-bit DATA A 8-bits S SLAVEaddr R A 8-bits Master to Slave DATA DATA * DATA A P 8-bits A * DATA 8-bits A P 8-bits Slave to Master S = START condition Sr = Repeat START condition P = STOP condition A = Acknowledge (low) * A = Not Acknowledge (NAK) W = Write (low) R = Read (high) 2 Figure 29: Examples of I C page read (SDA line) The slave address after the Repeated START condition must be the same as the previous slave address. Consecutive-write-mode (cif_i2c_write_mode = 0) is supported if the Master sends several data 2 bytes following a slave register address. The I C control block then increments the address pointer to 2 the next I C address, stores the received data and sends an Acknowledge until the master sends the STOP condition. S SLAVEaddr W A 7-bits 1 bit REGadr 8-bits A DATA A 8-bits Master to Slave 1-bit DATA 8-bits A DATA 8-bits A ………. A P Repeated writes Slave to Master S = START condition Sr = Repeat START condition P = STOP condition A = Acknowledge (low) * A = Not Acknowledge (NAK) W = Write (low) R = Read (high) 2 Figure 30: I C Page Write (SDA Line) An alternative Repeated-write mode that uses non-consecutive slave register addresses is available using the cif_i2c_write_mode register. In this Repeat mode (cif_i2c_write_mode = 1), the slave can be configured to support a host’s repeated write operations into several non-consecutive registers. Data is stored at the previously received register address. If a new START or STOP condition occurs within a message, the bus returns to IDLE mode. This is illustrated in Figure 31. Datasheet Revision 2.3 68 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec S SLAVEaddr W A 7-bits 1 bit REG addr 8-bits Master to Slave S = START condition Sr = Repeat START condition P = STOP condition A Company confidential DATA A 8-bits 1-bit REG addr 8-bits A DATA A 8-bits ………. A P Repeated writes Slave to Master A = Acknowledge (low) * A = Not Acknowledge (NAK) W = Write (low) R = Read (high) 2 Figure 31: I C Repeated Write (SDA Line) In Page mode (cif_i2c_write_mode = 0), both Page mode reads and writes using auto incremented addresses, and Repeat mode reads and writes using non auto-incremented addresses, are supported. In Repeat mode (cif_i2c_write_mode = 1) however, only Repeat mode reads and writes are supported. 8.8 Digital audio interface (DAI) DA7218 provides one Digital Audio Interface (DAI) to input DAC data or to output ADC data. It is enabled by asserting dai_en. The DAI provides flexible routing options allowing each interface to be connected to different signal paths as desired in each application. The DAI consists of a four-wire serial interface, with bit clock (BCLK), word clock (WCLK), data-in (DATIN) and data-out (DATOUT) pins. Both Master and Slave clock modes are supported by the DA7218. Master mode is enabled by setting register dai_clk_en = 1. In Master mode, the bit clock and word clock signals are outputs from the codec. In Slave mode these are inputs to the codec. In Master mode the frame length is configured using the dai_clk_enfield. In Slave mode this register is not used. Figure 32: Master mode (dai_clk_en = 1) Figure 33: Slave mode (dai_clk_en = 0) Datasheet Revision 2.3 69 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential The internal serialised DAI data is 24 bits wide. Serial data that is not 24 bits wide is either shortened or zero-filled at input to, or at output from, the DAI’s internal 24-bit data width. The serial data word length can be configured to be 16, 20, 24 or 32 bits wide using the dai_word_length register bits. Four different data formats are supported by the digital audio interface. The data format is determined by the setting of the dai_format register bits. ● ● ● ● 2 I S mode Left justified mode Right justified mode DSP mode Time division multiplexing (TDM) is available in any of these modes to support the case where multiple devices are communicating simultaneously on the same bus. TDM is enabled by asserting the dai_tdm_mode_en bit. 8.8.1 DAI channels The DAI supports one to four channels, even in non-TDM modes. The number of channels required is specified by setting dai_ch_num bit which controls the position of the channels as shown in Figure 34. Figure 34: Effect of dai_ch_num bit on DAI channel positions (non-TDM mode) In TDM mode, each of the four channels can be individually enabled using the dai_tdm_mode_en bit as shown in Figure 35. BCLK WCLK DATIN/ DATOUT Channel 1L DAI_TDM_CH_EN = 1 Channel 1L DATIN/ DATOUT DAI_TDM_CH_EN = 2 Channel 1R DATIN/ DATOUT Channel 1L DATIN/ DATOUT Channel 1R DAI_TDM_CH_EN = 3 Channel 1L Channel 2L Channel 2L DAI_TDM_CH_EN = 4 DATIN/ DATOUT Channel 1L Channel 2L Channel 1L Channel 2L DAI_TDM_CH_EN = 5 DATIN/ DATOUT Channel 1L Channel 2L Channel 1L Channel 2L DAI_TDM_CH_EN = 15 Channel 1R Channel 2R Figure 35: Effect of dai_tdm_ch_en bit on DAI channel positions (TDM mode) Datasheet Revision 2.3 70 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 8.8.2 Company confidential DAI WCLK tristate mode For systems that use the BCLK output of DA7218 as a reference clock, it is possible to tristate the WCLK signal even when BCLK is acting as an output. This is done by enabling DAI Master mode (dai_clk_en = 1) and WCLK tristate (dai_wclk_tri_state = 1). 8.9 Interrupt control The nIRQ output can be used to signal to the host that an event has been detected by the codec. The event that triggered the interrupt can be revealed by reading the EVENT register. Events can be excluded from generating interrupts using the EVENT_MASK register. 8.9.1 Level detect events The input level-detect event status can be seen in lvl_det_event, and cleared by writing lvl_det_event = 1. Level-detect events can be excluded by setting lvl_det_event_msk = 1. 8.9.2 Jack detect events The jack detect event status can be seen in hpldet_jack_event, and cleared by writing hpldet_jack_event = 1. The actual jack status (in or out) can be read from hlpdet_jack_sts. Jack events can be masked from the interrupt mechanism by setting hpldet_jack_event_irq_msk = 1. Datasheet Revision 2.3 71 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential 8.10 System settings 8.10.1 Sample rate The inputs (ADC) and the outputs (DAC) can be set to operate at independent sample rates using sr_adc and sr_dac. The only condition is that either the ADC sample rate or the DAC sample rate must be an integer or multiple of the other. The DAI will operate at whichever of the ADC or DAC sample rates is faster, and samples for the slower of the two will be repeated on the DAI. 8.10.2 Gain ramp rate The rate at which all gains are ramped is controlled by the one register field gain_ramp_rate. The four possible settings and ramping rates controllable by the GAIN_RAMP_CTRL register are: Table 51: Ramp rate settings applicable to all ramp-enabled gains gain_ramp_rate setting Note 1 8.10.3 Ramping rate 00 0 = nominal rate * 8 (fastest) 01 1 = nominal rate 10 2 = nominal rate / 8 11 3 = nominal rate / 16 (slowest) nominal rate = 0.88 ms/dB Program counter control The program counter (PC) runs from the internal system clock and needs to be synchronised with the DAI so that data is sampled and delivered at the correct time with respect to the DAI clocks. Synchronisation behaviour is controlled using pc_sync_auto and pc_freerun in the PC_COUNT register. The PC can be set to automatically resync to the DAI using pc_resysnc_auto. It can be set to freerun without the need for DAI clocks using pc_freerun. 8.10.4 Soft reset The device can be reset (all register values reset to their default values) by writing cif_reg_soft_reset = 0x80. This is an abrupt reset. To avoid pops and clicks, all audio paths must be shut down prior to issuing a soft reset. Datasheet Revision 2.3 72 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec 9 Company confidential Register maps and definitions Table 55: Register map adc_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000C0 ADC_1_CTRL Reserved 0x000000C1 ADC_2_CTRL Reserved 0x000000C2 adc_1_aaf_e n adc_2_aaf_e Reserved n Reserved ADC_MODE Reserved adc_lvldet_a adc_lvldet_m uto_exit ode adc_lp_mode Table 56: ADC_1_CTRL (Page 0: 0x000000C0) Bit Mode Symbol Description Reset 2 R/W adc_1_aaf_en Anti-alias filter control on ADC1 0x1 0 = anti-alias filter disabled 1 = anti-alias filter enabled Table 57: ADC_2_CTRL (Page 0: 0x000000C1) Bit Mode Symbol Description Reset 2 R/W adc_2_aaf_en Anti-alias filter control on ADC2 0x1 0 = anti-alias filter disabled 1 = anti-alias filter enabled Datasheet Revision 2.3 73 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 58: ADC_MODE (Page 0: 0x000000C2) Bit Mode Symbol Description Reset 2 R/W adc_lvldet_auto_exit Controls the automatic exit of ADC Level Detection mode. When set, ADC Level Detection mode is exited automatically as soon as the input signal level exceeds the detection threshold level specified in lvl_det_level. When ADC Level Detection mode is exited, the ADC Level Detection control bit (adc_lvldet_mode) is automatically cleared. 0x0 0 = when the threshold level is exceeded, ADC Level Detection mode is not exited 1 = When the threshold level is exceeded, ADC Level Detection mode is exited, and adc_lvldet_mode is cleared 1 R/W adc_lvldet_mode ADC Level Detection Mode control 0x0 0 = Disabled 1 = Enabled 0 R/W adc_lp_mode ADC Low Power Mode control 0x0 0 = Disabled 1 = Enabled Table 59: Register map ags_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x0000003C Reserved AGS_ENABLE ags_enable 0x0000003D AGS_TRIGGE R Reserved ags_trigger 0x0000003E AGS_ATT_MA X Reserved 0x0000003F AGS_TIMEOU ags_att_max ags_timeout_ en Reserved T 0x00000040 AGS_ANTICLI P_CTRL Datasheet ags_anticlip_ Reserved en Revision 2.3 74 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 60: AGS_ENABLE (Page 0: 0x0000003C) Bit Mode Symbol Description Reset 1:0 R/W ags_enable ADC Gain Swap (AGS) control bit 0 controls the AGS on Channel 1 bit 1 controls the AGS on Channel 2 0x0 0 = Disabled 1 = Enabled Table 61: AGS_TRIGGER (Page 0: 0x0000003D) Bit Mode Symbol Description Reset 3:0 R/W ags_trigger AGS trigger level 0x9 0000 = 0 dB 0001 = -6 dB 0010 = -12 dB 0011 = -18 dB Continuing in -6 dB steps to 1001 = -54 dB (default) Continuing in -6 dB steps to 1110 = -84 dB 1111 = -90 dB Table 62: AGS_ATT_MAX (Page 0: 0x0000003E) Bit Mode Symbol Description Reset 2:0 R/W ags_att_max Maximum attenuation applied to the ADC by AGS 0x0 000 = 0 dB 001 = 6 dB 010 = 12 dB 011 = 18 dB 100 = 24 dB 101 = 30 dB 110 = 36 dB 111 = reserved Table 63: AGS_TIMEOUT (Page 0: 0x0000003F) Bit Mode Symbol Description Reset 0 R/W ags_timeout_en Timeout control 0x0 0 = Timeout disabled 1 = Timeout enabled Datasheet Revision 2.3 75 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 64: AGS_ANTICLIP_CTRL (Page 0: 0x00000040) Bit Mode Symbol Description Reset 7 R/W ags_anticlip_en ADC Gain Swap (AGS) clip prevention control 0x0 0 = Disabled 1 = Enabled Table 65: Register map alc_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000030 ALC_CTRL1 0x00000031 ALC_CTRL2 0x00000032 ALC_CTRL3 0x00000033 ALC_NOISE alc_sync_mode alc_en alc_release alc_attack Reserved alc_hold Reserved alc_noise Reserved alc_threshold_min Reserved alc_threshold_max 0x00000034 ALC_TARGET _MIN 0x00000035 ALC_TARGET _MAX 0x00000036 ALC_GAIN_LI MITS alc_gain_max alc_atten_max 0x00000037 ALC_ANA_GA IN_LIMITS 0x00000038 ALC_ANTICLI P_CTRL Datasheet Reserved alc_anticlip_e n alc_ana_gain_max Reserved Reserved Revision 2.3 76 of 171 alc_ana_gain_min alc_anticlip_step 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 66: ALC_CTRL1 (Page 0: 0x00000030) Bit Mode Symbol Description Reset 7:4 R/W alc_sync_mode ALC hybrid mode control (using analogue and digital gains) 0x0 bit 0 = Channel 1 bit 1 = Reserved bit 2 = Channel 2 bit 3 = Reserved 0 = Disabled 1 = Enabled 3:0 R/W alc_en Controls the ALC operation on the ADC channel bit 0 = Channel 1 Left bit 1 = Channel 1 Right bit 2 = Channel 2 Left bit 3 = Channel 2 Right 0x0 0 = ALC disabled on this channel 1 = ALC enabled on this channel Table 67: ALC_CTRL2 (Page 0: 0x00000031) Bit Mode Symbol Description Reset 7:4 R/W alc_release Sets the ALC release rate This is the rate in ms/dB at which the ALC can increase the gain 0x0 0000 = 28.66/fs 0001 = 57.33/fs 0010 = 114.6/fs 0011 = 229.3/fs 0100 = 458.6/fs 0101 = 917.1/fs 0110 = 1834/fs 0111 = 3668/fs 1000 = 7337/fs 1001 = 14674/fs 1010 to 1111 = 29348/fs 3:0 R/W alc_attack Sets the ALC attack rate This is the speed at which the ALC can decrease the gain 0x0 0000 = 7.33/fs 0001 = 14.66/fs 0010 = 29.32/fs 0011 = 58.64/fs 0100 = 117.3/fs 0101 = 234.6/fs 0110 = 469.1/fs 0111 = 938.2/fs 1000 = 1876/fs 1001 = 3753/fs 1010 = 7506/fs 1011 = 15012/fs 1100 to 1111 = 30024/fs Datasheet Revision 2.3 77 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 68: ALC_CTRL3 (Page 0: 0x00000032) Bit Mode Symbol Description Reset 3:0 R/W alc_hold Sets the ALC hold time. This is the length of time that the ALC waits before releasing. 0x0 0000 = 62/fs 0001 = 124/fs 0010 = 248/fs 0011 = 496/fs 0100 = 992/fs 0101 = 1984/fs 0110 = 3968/fs 0111 = 7936/fs 1000 = 15872/fs 1001 = 31744/fs 1010 = 63488/fs 1011 = 126976/fs 1100 = 253952/fs 1101 = 507904/fs 1110 = 1015808/fs 1111 = 2031616/fs Table 69: ALC_NOISE (Page 0: 0x00000033) Bit Mode Symbol Description Reset 5:0 R/W alc_noise Threshold below which input signals will not cause the ALC to change gain 0x3F 00 0000 = 0 dBFS 00 0001 = -1.5 dBFS 00 0010 = -3.0 dBFS 00 0011 = -4.5 dBFS continuing in -1.5 dBFS steps to 11 1110 = -93.0 dBFS 11 1111 = -94.5 dBFS (default) Datasheet Revision 2.3 78 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 70: ALC_TARGET_MIN (Page 0: 0x00000034) Bit Mode Symbol Description Reset 5:0 R/W alc_threshold_min Sets the minimum target amplitude of the ALC output signal. If the output signal drops below this level, the ALC will increase the gain until the output signal rises above this level. 0x3F 00 0000 = 0 dBFS 00 0001 = -1.5 dBFS 00 0010 = -3.0 dBFS 00 0011 = -4.5 dBFS continuing in -1.5 dBFS steps to 11 1110 = -93.0 dBFS 11 1111 = -94.5 dBFS (default) Table 71: ALC_TARGET_MAX (Page 0: 0x00000035) Bit Mode Symbol Description Reset 5:0 R/W alc_threshold_max Sets the maximum target amplitude of the ALC output signal. If the output signal exceeds this level, the ALC will decrease the gain until the output signal drops below this level. 0x0 00 0000 = 0 dBFS 00 0001 = -1.5 dBFS 00 0010 = -3.0 dBFS 00 0011 = -4.5 dBFS continuing in -1.5 dBFS steps to 11 1110 = -93.0 dBFS 11 1111 = -94.5 dBFS Datasheet Revision 2.3 79 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 72: ALC_GAIN_LIMITS (Page 0: 0x00000036) Bit Mode Symbol Description Reset 7:4 R/W alc_gain_max Sets the maximum amount of gain that can be applied by the ALC 0xF 0000 = 0 dB 0001 = 6 dB 0010 = 12 dB continuing in 6 dB steps to 1110 = 84 dB 1111 = 90 dB 3:0 R/W alc_atten_max Sets the maximum amount of attenuation that can be applied by the ALC 0xF 0000 = 0 dB 0001 = 6 dB 0010 = 12 dB continuing in 6 dB steps to 1110 = 84 dB 1111 = 90 dB Table 73: ALC_ANA_GAIN_LIMITS (Page 0: 0x00000037) Bit Mode Symbol Description Reset 6:4 R/W alc_ana_gain_max Sets the maximum amount of analogue gain that can be applied by the ALC (mixed analogue and digital hybrid gain mode only) 0x7 000 = reserved 001 = 0 dB 010 = 6 dB continuing in 6 dB steps to 111 = 36 dB 2:0 R/W alc_ana_gain_min Sets the minimum amount of analogue gain that can be applied by the ALC (mixed analogue and digital hybrid gain mode only) 0x1 000 = reserved 001 = 0 dB 010 = 6 dB continuing in 6 dB steps to 111 = 36 dB Datasheet Revision 2.3 80 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 74: ALC_ANTICLIP_CTRL (Page 0: 0x00000038) Bit Mode Symbol Description Reset 7 R/W alc_anticlip_en Controls the ALC signal clip prevention mechanism 0x0 0 = Disabled 1 = Enabled 1:0 R/W alc_anticlip_step Sets the ALC attack rate when the output signal exceeds the anticlip threshold level specified in alc_threshold_max 0x0 00 = 0.034 dB/fs 01 = 0.068 dB/fs 10 = 0.136 dB/fs 11 = 0.272 dB/fs Table 75: Register map calib_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 calib_overflo w calib_auto_e n Reserved calib_offset_ en Name Register Page 0 0x00000044 CALIB_CTRL Reserved 0x00000045 CALIB_OFFS calib_offset_auto_m_1 ET_AUTO_M_ 1 0x00000046 CALIB_OFFS ET_AUTO_U_ 1 Reserved calib_offset_auto_u_1 0x00000047 CALIB_OFFS ET_AUTO_M_ calib_offset_auto_m_2 2 0x00000048 CALIB_OFFS ET_AUTO_U_ Reserved calib_offset_auto_u_2 2 Datasheet Revision 2.3 81 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 76: CALIB_CTRL (Page 0: 0x00000044) Bit Mode Symbol Description Reset 3 R calib_overflow Offset overflow during calibration 0x0 2 R/W calib_auto_en Control of automatic calibration 0x0 0 = Disabled 1 = Enabled This is a self clearing bit. It clears automatically as soon as the calibration routine has been completed. 0 R/W calib_offset_en DC offset cancellation control 0x0 0 = Disabled 1 = Enabled Table 77: CALIB_OFFSET_AUTO_M_1 (Page 0: 0x00000045) Bit Mode Symbol Description Reset 7:0 R calib_offset_auto_m _1 Contains the lower bits [15:8] of the Offset Correction for the left channel when in automatic mode 0x0 Table 78: CALIB_OFFSET_AUTO_U_1 (Page 0: 0x00000046) Bit Mode Symbol Description Reset 3:0 R calib_offset_auto_u_ 1 Contains the upper bits [19:16] of the Offset Correction for the left channel when in automatic mode 0x0 Table 79: CALIB_OFFSET_AUTO_M_2 (Page 0: 0x00000047) Bit Mode Symbol Description Reset 7:0 R calib_offset_auto_m _2 Contains the lower bits [15:8] of the Offset Correction for the right channel when in automatic mode 0x0 Table 80: CALIB_OFFSET_AUTO_U_2 (Page 0: 0x00000048) Bit Mode Symbol Description Reset 3:0 R calib_offset_auto_u_ 2 Contains the upper bits [19:16] of the Offset Correction for the right channel when in automatic mode 0x0 Datasheet Revision 2.3 82 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 81: Register map charge_pump_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000AC cp_en CP_CTRL 0x000000AD CP_DELAY cp_small_swi tch_freq_en cp_mchange Reserved 0x000000AE CP_VOL_THR cp_mod cp_tau_delay Reserved Reserved cp_fcontrol cp_thresh_vdd2 ESHOLD1 Table 82: CP_CTRL (Page 0: 0x000000AC) Bit Mode Symbol Description Reset 7 R/W cp_en Charge pump control 0x0 0 = Charge pump is disabled 1 = Charge pump is enabled 6 R/W cp_small_switch_fre q_en Charge pump low-load low-power mode control 0x1 0 = Disabled 1 = Enabled 5:4 R/W cp_mchange Charge pump tracking mode control 0x2 00 = voltage level is controlled by cp_mod 01 = voltage level is controlled by the largest output volume level 10 = voltage level is controlled by the dac volume level 11 = voltage level is controlled by the signal magnitude 3:2 R/W cp_mod Charge pump level control in manual mode 0x0 00 = Standby 01 = Reserved 10 = CPVDD/2 11 = CPVDD/1 Datasheet Revision 2.3 83 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 83: CP_DELAY (Page 0: 0x000000AD) Bit Mode Symbol Description Reset 5:3 R/W cp_tau_delay Charge pump voltage decay rate control. This controls the rate of change when moving from a VDD supply voltage to a VDD/2 supply voltage 0x2 000 = 0 ms 001 = 2 ms 010 = 4 ms 011 = 16 ms 100 = 64 ms 101 = 128 ms 110 = 256 ms 111 = 512 ms 2:0 R/W cp_fcontrol Charge pump nominal clock rate. Lower rates provide lower power but can drive less load. 0x1 000 = 1 MHz 001 = 500 kHz 010 = 250 kHz 011 = 125 kHz 100 = 63 kHz 101 = 0 kHz (analogue feedback control only) 110 = Reserved 111 = Reserved Table 84: CP_VOL_THRESHOLD1 (Page 0: 0x000000AE) Bit Mode Symbol Description Reset 5:0 R/W cp_thresh_vdd2 Threshold at and below which the charge pump can use the CPVDD/2 rail. Note: This setting is only effective when cp_mchange = 10 or cp_mchange = 11. It is ignored for cp_mchange settings of 00 and 01 0xE Table 85: Register map common_ao_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000000 SYSTEM_ACT IVE 0x00000001 CIF_CTRL Datasheet Reserved Reserved Revision 2.3 84 of 171 system_activ e cif_i2c_write_ mode 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 86: SYSTEM_ACTIVE (Page 0: 0x00000000) Bit Mode Symbol Description Reset 0 R/W system_active System Standby Mode control 0x0 0 = Standby Mode 1 = Acitve Mode Table 87: CIF_CTRL (Page 0: 0x00000001) Bit Mode Symbol Description Reset 0 R/W cif_i2c_write_mode 2-wire interface write mode 0x0 0 = Page mode. The register address is automatically incremented after the first write. 1 = Repeat mode. The register address and data are sent for each write. Table 88: Register map common_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 pc_resync_a uto pc_freerun Name Register Page 0 0x00000004 chip_id1 CHIP_ID1 0x00000005 chip_id2 CHIP_ID2 0x00000006 CHIP_REVISI chip_major chip_minor ON 0x00000009 SOFT_RESET 0x0000000B SR 0x0000000C PC_COUNT 0x0000000D GAIN_RAMP_ cif_reg_soft_r Reserved eset sr_dac sr_adc Reserved Reserved gain_ramp_rate CTRL 0x00000010 CIF_TIMEOUT _CTRL Reserved Datasheet Revision 2.3 85 of 171 i2c_timeout_ en 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 89: CHIP_ID1 (Page 0: 0x00000004) Bit Mode Symbol Description Reset 7:0 R chip_id1 Chip ID - first two numbers only 0x23 Table 90: CHIP_ID2 (Page 0: 0x00000005) Bit Mode Symbol Description Reset 7:0 R chip_id2 Chip ID - second two numbers only 0x39 Table 91: CHIP_REVISION (Page 0: 0x00000006) Bit Mode Symbol Description Reset 7:4 R chip_major Chip major revision number 0x0 3:0 R chip_minor Chip minor revision number 0x1 Table 92: SOFT_RESET (Page 0: 0x00000009) Bit Mode Symbol Description Reset 7 R/W cif_reg_soft_reset Software reset 0x0 Writing to this bit causes all the registers to be reset, returning all the registers back to their default setting Datasheet Revision 2.3 86 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 93: SR (Page 0: 0x0000000B) Bit Mode Symbol Description Reset 7:4 R/W sr_dac DAC Sample rate control 0xA 0001 = 8.000 kHz 0010 = 11.025 kHz 0011 = 12.000 kHz 0101 = 16.000 kHz 0110 = 22.050 kHz 0111 = 24.000 kHz 1001 = 32.000 kHz 1010 = 44.100 kHz 1011 = 48.000 kHz 1110 = 88.200 kHz 1111 = 96.000 kHz 3:0 R/W sr_adc ADC Sample rate control 0xA 0001 = 8.000 kHz 0010 = 11.025 kHz 0011 = 12.000 kHz 0101 = 16.000 kHz 0110 = 22.050 kHz 0111 = 24.000 kHz 1001 = 32.000 kHz 1010 = 44.100 kHz 1011 = 48.000 kHz 1110 = 88.200 kHz 1111 = 96.000 kHz Table 94: PC_COUNT (Page 0: 0x0000000C) Bit Mode Symbol Description Reset 1 R/W pc_resync_auto PC resync mode control 0x1 0 = No resync - just double sample or skip a sample if the DAI drifts with respect to the system clock 1 = Automatically resync if the DAI drifts with respect to the system clock 0 R/W pc_freerun Enables the filter operation when DAI is not enabled or no DAI clocks are available (ADC to DAC processing path) 0x0 0 = ADC and DAC Filters synchronised to the DAI 1 = Filters free running Note: This should be set to 1 if the ADC is feeding the DAC directly and no DAI clocks are present Datasheet Revision 2.3 87 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 95: GAIN_RAMP_CTRL (Page 0: 0x0000000D) Bit Mode Symbol Description Reset 1:0 R/W gain_ramp_rate Controls the speed of the gain ramping when gain_ramping is activate (nominal rate = 0.88 ms/dB) 0x0 0 = nominal rate * 8 (fastest) 1 = nominal rate 2 = nominal rate / 8 3 = nominal rate / 16 (slowest) Table 96: CIF_TIMEOUT_CTRL (Page 0: 0x00000010) Bit Mode Symbol Description Reset 0 R/W i2c_timeout_en I2C timeout to release SCL if read/write access to the chip does not complete correctly 0x1 0 = No timeout (SCL will be held low by the chip) 1 = Timeout will occur after approximately 40 ms Datasheet Revision 2.3 88 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 97: Register map dac_ng_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x0000009C DAC_NG_CT dac_ng_en Reserved RL 0x0000009D DAC_NG_SET UP_TIME Reserved 0x0000009E DAC_NG_OF dac_ng_ram dac_ng_ram pdn_rate pup_rate dac_ng_setup_time Reserved dac_ng_off_threshold Reserved dac_ng_on_threshold F_THRESH 0x0000009F DAC_NG_ON _THRESH Table 98: DAC_NG_CTRL (Page 0: 0x0000009C) Bit Mode Symbol Description Reset 7 R/W dac_ng_en DAC noise gate control 0x0 0 = DAC noise gate is disabled 1 = DAC noise gate is enabled Table 99: DAC_NG_SETUP_TIME (Page 0: 0x0000009D) Bit Mode Symbol Description Reset 3 R/W dac_ng_rampdn_rat e Ramp down rate 0x0 0 = 0.88 ms/dB 1 = 14.08 ms/dB 2 R/W dac_ng_rampup_rat e Ramp up rate 0x0 0 = 0.22 ms/dB 1 = 0.0138 ms/dB 1:0 R/W dac_ng_setup_time Length of time for which the largest signal through the DACs must be below dac_ng_on_threshold for the noise gate to mute the data 0x0 0 = 256 samples 1 = 512 samples 2 = 1024 samples 3 = 2048 samples Datasheet Revision 2.3 89 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 100: DAC_NG_OFF_THRESH (Page 0: 0x0000009E) Bit Mode Symbol Description Reset 2:0 R/W dac_ng_off_threshol d Threshold above which the noise gate will deactivate 0x0 000 = -102 dB 001 = -96 dB 010 = -90 dB 011 = -84 dB 100 = -78 dB 101 = -72 dB 110 = -66 dB 111 = -60 dB Table 101: DAC_NG_ON_THRESH (Page 0: 0x0000009F) Bit Mode Symbol Description Reset 2:0 R/W dac_ng_on_threshol d Threshold below which the noise gate will activate 0x0 000 = -102 dB 001 = -96 dB 010 = -90 dB 011 = -84 dB 100 = -78 dB 101 = -72 dB 110 = -66 dB 111 = -60 dB Table 102: Register map dai_cor_00 page 0 Address Name # 7 6 5 4 3 2 1 0 Register Page 0 0x0000008C DAI_CTRL 0x0000008D DAI_TDM_CT RL dai_en dai_tdm_mod e_en dai_ch_num dai_oe dai_word_length Reserved 0x0000008E DAI_OFFSET dai_format dai_tdm_ch_en dai_offset_lower _LOWER 0x0000008F DAI_OFFSET _UPPER 0x00000090 DAI_CLK_MO DE Datasheet Reserved dai_clk_en Reserved dai_offset_upper dai_wclk_tri_ state Revision 2.3 90 of 171 dai_wclk_pol dai_clk_pol dai_bclks_per_wclk 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 103: DAI_CTRL (Page 0: 0x0000008C) Bit Mode Symbol Description Reset 7 R/W dai_en DAI control 0x0 0 = DAI disabled. No data transfer. 1 = DAI enabled. Input and output data channels can be enabled using dai_ch_num. 6:4 R/W dai_ch_num DAI Channel control 0x2 000 = No channels are enabled 001 = Channel 1L enabled 010 = Channel 1L and 1R enabled 011 = Channel 1L, 1R and 2L enabled 100 = Channel 1L, 1R, 2L and 2R enabled 101 to 111 = Reserved 3:2 R/W dai_word_length DAI data word length 0x2 00 = 16 bits per channel 01 = 20 bits per channel 10 = 24 bits per channel 11 = 32 bits per channel 1:0 R/W dai_format DAI data format 0x0 00 = I2S mode 01 = left justified mode 10 = right justified mode 11 = DSP mode Table 104: DAI_TDM_CTRL (Page 0: 0x0000008D) Bit Mode Symbol Description Reset 7 R/W dai_tdm_mode_en DAI TDM mode control. In TDM mode the output is high impedence when not actively driving data. This allows other devices to share the DATOUT line. 0x0 0 = DAI in normal mode 1 = DAI in TDM mode 6 R/W dai_oe DAI output control 0x1 0 = DAI DATOUT pin is high impedence 1 = DAI DATOUT pin is driven when required 3:0 R/W dai_tdm_ch_en DAI TDM channel control 0x0 bit 0: Channel 1L bit 1: Channel 1R bit 2: Channel 2L bit 3: Channel 2R On each bit 0 = Channel is disabled 1 = Channel is enabled Datasheet Revision 2.3 91 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 105: DAI_OFFSET_LOWER (Page 0: 0x0000008E) Bit Mode Symbol Description Reset 7:0 R/W dai_offset_lower DAI data offset with respect to WCLK 0x0 0x0 = No offset relative to the normal formatting 0x1 = One BCLK period offset relative to the normal formatting 0x2 = Two BCLK periods offset relative to the normal formatting n = n BCLK period offset relative to the normal formatting Table 106: DAI_OFFSET_UPPER (Page 0: 0x0000008F) Bit Mode Symbol Description Reset 2:0 R/W dai_offset_upper DAI data offset with respect to WCLK 0x0 000 = No offset relative to the normal formatting 001 = One BCLK period offset relative to the normal formatting n = n BCLK period offset relative to the normal formatting Datasheet Revision 2.3 92 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 107: DAI_CLK_MODE (Page 0: 0x00000090) Bit Mode Symbol Description Reset 7 R/W dai_clk_en DAI master mode control 0x0 0 = Slave mode (BCLK/WCLK inputs) 1 = Master mode (BCLK/WCLK outputs) 4 R/W dai_wclk_tri_state WCLK tri-state control 0x0 0 = WCLK state set by the dai_clk_en (WCLK is set as the output in master mode, and as the input in slave mode) 1 = WCLK forced as an input 3 R/W dai_wclk_pol DAI word clock polarity control 0x0 0 = Normal polarity 1 = Inverted polarity 2 R/W dai_clk_pol DAI bit clock polarity control 0x0 0 = Normal polarity 1 = Inverted polarity 1:0 R/W dai_bclks_per_wclk Number of BCLK cycles per WCLK period in DAI master mode 0x1 00 = 32 BCLK cycles per WCLK 01 = 64 BCLK cycles per WCLK 10 = 128 BCLK cycles per WCLK 11 = 256 BCLK cycles per WCLK Datasheet Revision 2.3 93 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 108: Register map dgs_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000054 DGS_TRIGGE Reserved dgs_trigger_lvl R 0x00000055 Reserved DGS_ENABLE dgs_enable 0x00000056 DGS_RISE_F Reserved dgs_fall_coeff Reserved dgs_rise_coeff ALL 0x00000057 DGS_SYNC_ DELAY dgs_sync_delay 0x00000058 DGS_SYNC_ dgs_sync_delay2 DELAY2 0x00000059 DGS_SYNC_ DELAY3 Reserved dgs_sync_delay3 0x0000005A dgs_signal_lvl DGS_LEVELS 0x0000005B DGS_GAIN_C TRL Reserved dgs_subr_en Reserved dgs_ramp_e n dgs_anticlip_lvl dgs_steps Table 109: DGS_TRIGGER (Page 0: 0x00000054) Bit Mode Symbol Description Reset 5:0 R/W dgs_trigger_lvl DAC Gain Swap (DGS) input-amplitude trigger level control. This sets the volume level at which all DGS steps are applied. 0x24 0x00 = 0 dB 0x01 = -1.5 dB 0x02 = -3 dB continuing in -1.5 dB steps through... 0x24 = -54 dB (default) to... 0x3e = -93 dB 0x3f = -94.5 dB Datasheet Revision 2.3 94 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 110: DGS_ENABLE (Page 0: 0x00000055) Bit Mode Symbol Description Reset 1:0 R/W dgs_enable DAC Gain Swap (DGS) channel control 0x0 0 = DAC Channel Left 1 = DAC Channel Right Table 111: DGS_RISE_FALL (Page 0: 0x00000056) Bit Mode Symbol Description Reset 6:4 R/W dgs_fall_coeff Control volume estimation Leaky-integrator fall rate. This register sets the fraction of the input signal that is used to calculate the rolling average for all input channels in the DAC Gain Swap (DGS) when the input signal is smaller than signal average. 0x5 000 = 1/4 001 = 1/16 010 = 1/64 011 = 1/256 100 = 1/1024 101 = 1/4096 110 = 1/16384 111 = 1/65536 2:0 R/W dgs_rise_coeff Control volume estimation Leaky-integrator rise rate. 0x0 This register sets the fraction of the input signal that is used to calculate the rolling average for all input channels in the DAC Gain Swap (DGS) when the current input is larger than current average. 001 = 1/1 (average == signal) 010 = 1/16 011 = 1/64 100 = 1/256 101 = 1/1024 110 = 1/4096 111 = 1/16384 Datasheet Revision 2.3 95 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 112: DGS_SYNC_DELAY (Page 0: 0x00000057) Bit Mode Symbol Description Reset 7:0 R/W dgs_sync_delay User-defined sync-delay measured in Fs*8 clk periods. This delay is applied between Digital and Analogue gain updates to match the datapath delay through the DAC from the point of Digital gain application to the Analogue gain application. The delay is measured from the start of the frame in which the Digital gain is applied. 0xA3 Table 113: DGS_SYNC_DELAY2 (Page 0: 0x00000058) Bit Mode Symbol Description Reset 7:0 R/W dgs_sync_delay2 User-defined sync-delay measured in Fs*8 clk periods (exactly as dgs_sync_delay), but this delay setting is applied when the data-delay has been reduced due to operating at faster sample rates of: 88/96k (non-low-power) 44/48k (low-power) This delay is applied between Digital and Analogue gain updates to match the datapath delay through the DAC from the point of Digital gain application to the Analogue gain application. The delay is measured from the start of the frame in which the Digital gain is applied. The switch to this delay value is performed automatically. 0x31 Table 114: DGS_SYNC_DELAY3 (Page 0: 0x00000059) Bit Mode Symbol Description Reset 6:0 R/W dgs_sync_delay3 User-defined sync-delay measured in Fs*16 clk periods (similar to dgs_sync_delay), but this delay setting is applied when the data-delay has been reduced due to operating in voice filter modes where the DGS operates on Fs*2 data. This delay is applied between Digital and Analogue gain updates to match the datapath delay through the DAC from the point of Digital gain application to the Analogue gain application. The delay is measured from the start of the frame in which the Digital gain is applied. 0x11 Datasheet Revision 2.3 96 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 115: DGS_LEVELS (Page 0: 0x0000005A) Bit Mode Symbol Description Reset 7:4 R/W dgs_signal_lvl Trigger Level for application of gain. Once input drops below this level, the DGS will start applying the calculated gain-swaps. 0x0 0000 = 0 dB (swaps started immediately) 0001 = -6 dB 0010 = -12 dB continuing in -6 dB steps to... 1110 = -86 dB 1111 = -90 dB 2:0 R/W dgs_anticlip_lvl Trigger Level for the Anti-clip feature. Once input rises above this level, the DAC Gain Swap (DGS) will turn off immediately, removing all steps to prevent clipping. This parameter should not need to be changed from the default. 0x1 000 = 0 dB 001 = -6 dB 010 = -12 dB continuing in -6 dB steps to... 110 = -36 dB 111 = -42 dB Table 116: DGS_GAIN_CTRL (Page 0: 0x0000005B) Bit Mode Symbol Description Reset 6 R/W dgs_subr_en DGS Gain-subrange Mode. If DAC Gain Swapping (DGS) ramping is enabled, DGS normally ramps the gain in 1.5 dB steps. Setting this register field reduces the ramp step-size so there are no audible artifacts. 0x1 0 = Gain-ramping is performed in 1.5 dB steps 1 = Gain-ramping is performed in more gradual steps without audible artifacts Note that this register only has an effect if dgs_ramp_en = 1 5 R/W dgs_ramp_en DGS Gain-Ramping control 0x1 0 = Ramping is disabled. The gain steps are applied immediately 1 = Ramping is enabled. The gain steps are ramped in 1.5 dB increments (or in 0.5 dB steps if dgs_sub_en is set) 4:0 Datasheet R/W dgs_steps Maximum number of DAC Gain Swap (DGS) steps of 1.5 dB to apply. If sub-ranging is active, this setting still applies to the number of 1.5 dB steps to apply, and not to the number of sub-ranging steps. Revision 2.3 97 of 171 0x14 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 117: Register map dig_gain_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000F4 Reserved in_1l_digital_gain 0x000000F5 IN_1R_GAIN Reserved in_1r_digital_gain 0x000000F6 IN_2L_GAIN Reserved in_2l_digital_gain Reserved in_2r_digital_gain IN_1L_GAIN 0x000000F7 IN_2R_GAIN 0x000000F8 OUT_1L_GAI N out_1l_digital_gain 0x000000F9 OUT_1R_GAI out_1r_digital_gain N Table 118: IN_1L_GAIN (Page 0: 0x000000F4) Bit Mode Symbol Description Reset 6:0 R/W in_1l_digital_gain IN_1L digital gain control 0x6F 000 0000 = -83.25 dB 000 0001 = -82.5 dB 000 0010 = -81.75 dB continuing in 0.75 dB steps through... 110 1111 = 0 dB to... 111 1110 = 11.25 dB 111 1111 = 12 dB Datasheet Revision 2.3 98 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 119: IN_1R_GAIN (Page 0: 0x000000F5) Bit Mode Symbol Description Reset 6:0 R/W in_1r_digital_gain IN_1R digital gain control 0x6F 000 0000 = -83.25 dB 000 0001 = -82.5 dB 000 0010 = -81.75 dB continuing in 0.75 dB steps through... 110 1111 = 0 dB to... 111 1110 = 11.25 dB 111 1111 = 12 dB Table 120: IN_2L_GAIN (Page 0: 0x000000F6) Bit Mode Symbol Description Reset 6:0 R/W in_2l_digital_gain IN_2L digital gain control 0x6F 000 0000 = -83.25 dB 000 0001 = -82.5 dB 000 0010 = -81.75 dB continuing in 0.75 dB steps through... 110 1111 = 0 dB to... 111 1110 = 11.25 dB 111 1111 = 12 dB Table 121: IN_2R_GAIN (Page 0: 0x000000F7) Bit Mode Symbol Description Reset 6:0 R/W in_2r_digital_gain IN_2R digital gain control 0x6F 000 0000 = -83.25 dB 000 0001 = -82.5 dB 000 0010 = -81.75 dB continuing in 0.75 dB steps through... 110 1111 = 0 dB to... 111 1110 = 11.25 dB 111 1111 = 12 dB Datasheet Revision 2.3 99 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 122: OUT_1L_GAIN (Page 0: 0x000000F8) Bit Mode Symbol Description Reset 7:0 R/W out_1l_digital_gain OUT_1L digital gain control 0x6F 0000 0000 = -83.25 dB 0000 0001 = -82.5 dB 0000 0010 = -81.75 dB continuing in 0.75 dB steps through... 0110 1111 = 0 dB to... 1111 1110 = +107.25 dB 1111 1111 = +108 dB Table 123: OUT_1R_GAIN (Page 0: 0x000000F9) Bit Mode Symbol Description Reset 7:0 R/W out_1r_digital_gain OUT_1R digital gain control 0x6F 0000 0000 = -83.25 dB 0000 0001 = -82.5 dB 0000 0010 = -81.75 dB continuing in 0.75 dB steps through... 0110 1111 = 0 dB to... 1111 1110 = 107.25 dB 1111 1111 = 108 dB Table 124: Register map dmic_cor_00 page 0 Address # 7 6 5 4 dmic_1r_en dmic_1l_en Reserved dmic_2r_en dmic_2l_en Reserved 3 2 1 0 dmic_1_clk_r dmic_1_sam dmic_1_data ate plephase _sel dmic_2_clk_r dmic_2_sam dmic_2_data ate plephase _sel Name Register Page 0 0x000000F0 DMIC_1_CTR L 0x000000F1 DMIC_2_CTR L Datasheet Revision 2.3 100 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 125: DMIC_1_CTRL (Page 0: 0x000000F0) Bit Mode Symbol Description Reset 7 R/W dmic_1r_en DMIC_1 right channel control 0x0 0 = DMIC_1 right channel is disabled 1 = DMIC_1 right channel is enabled 6 R/W dmic_1l_en DMIC_1 left channel control 0x0 0 = DMIC_1 left channel is disabled 1 = DMIC_1 left channel is enabled 2 R/W dmic_1_clk_rate DMIC_1 clock control 0 = 3 MHz 1 = 1.5 MHz 0x0 1 R/W dmic_1_samplephas e DMIC_1 data sampling phase 0x0 0 = Sample on DMICCLK edges 1 = Sample between DMICCLK edges 0 R/W dmic_1_data_sel DMIC_1 data channel select 0x0 0 = Rising edge = Left. Falling edge = Right 1 = Rising edge = Right. Falling edge = Left Table 126: DMIC_2_CTRL (Page 0: 0x000000F1) Bit Mode Symbol Description Reset 7 R/W dmic_2r_en DMIC_2 right channel control 0x0 0 = DMIC_2 right channel is disabled 1 = DMIC_2 right channel is enabled 6 R/W dmic_2l_en DMIC_2 left channel control 0x0 0 = DMIC_2 left channel is disabled 1 = DMIC_2 left channel is enabled 2 R/W dmic_2_clk_rate DMIC_2 clock control 0x0 0 = 3 MHz 1 = 1.5 MHz 1 R/W dmic_2_samplephas e DMIC_2 data sampling phase 0x0 0 = Sample on DMICCLK edges 1 = Sample between DMICCLK edges 0 R/W dmic_2_data_sel DMIC_2 data channel select 0x0 0 = Rising edge = Left. Falling edge = Right 1 = Rising edge = Right. Falling edge = Left Datasheet Revision 2.3 101 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 127: Register map env_track_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x0000004C ENV_TRACK_ Reserved integ_release Reserved integ_attack CTRL Table 128: ENV_TRACK_CTRL (Page 0: 0x0000004C) Bit Mode Symbol Description Reset 5:4 R/W integ_release Sets the rate at which the input signal envelope is tracked as the signal gets smaller 0x0 00 = 1/4 01 = 1/16 10 = 1/256 11 = 1/65536 1:0 R/W integ_attack Sets the rate at which the input signal envelope is tracked as the signal gets larger 0x0 00 = 1/4 01 = 1/16 10 = 1/256 11 = 1/65536 Table 129: Register map hp_cor_00 page 0 Address # 7 6 5 4 hp_l_amp_m hp_l_amp_ra hp_l_amp_zc ute_en mp_en _en 3 2 1 0 Name Register Page 0 0x000000D0 HP_L_CTRL 0x000000D1 HP_L_GAIN 0x000000D2 HP_R_CTRL 0x000000D3 HP_R_GAIN 0x000000D4 HP_SNGL_CT RL 0x000000D5 HP_DIFF_CT RL hp_l_amp_en Reserved hp_r_amp_e n hp_r_amp_m ute_en Reserved hp_r_amp_ra hp_r_amp_zc mp_en _en Datasheet n_gain_en Reserved hp_r_amp_o e hp_r_amp_m in_gain_en Reserved hp_r_amp_gain hpr_amp_loa Reserved hp_amp_sing le_supply_en 0x000000D7 HP_DIFF_UN LOCK hp_l_amp_mi hp_l_amp_gain Reserved hp_amp_ster hp_amp_load eo_detect_en _detect_en hp_l_amp_oe Reserved Revision 2.3 102 of 171 hpl_amp_loa hp_amp_ster d_detect_stat d_detect_stat us us eo_detect_st atus Reserved hp_amp_diff_ mode_en hp_diff_unloc k 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 130: HP_L_CTRL (Page 0: 0x000000D0) Bit Mode Symbol Description Reset 7 R/W hp_l_amp_en HP_L amplifier control 0x0 0 = Headphone left amplifier disabled 1 = Headphone right amplifier enabled 6 R/W hp_l_amp_mute_en HP_L amplifier mute control 0x1 0 = Headphone left amplifier unmuted 1 = Headphone left amplifier muted 5 R/W hp_l_amp_ramp_en HP_L amplifier gain ramping control 0x0 0 = gain changes are instant 1 = gain changes are ramped between old and new gain values Note that this setting overrides zero crossing 4 R/W hp_l_amp_zc_en HP_L amplifier zero cross control 0x0 0 = gain changes are instant 1 = gain changes are performed when the data crosses zero Note that this setting is overridden by the ramp setting 3 R/W hp_l_amp_oe HP_L amplfier output enabling control 0x0 0 = output is high impedence 1 = output is driven 2 R/W hp_l_amp_min_gain _en HP_L amplifier gain held at the minimum value 0x0 0 = Normal gain operation 1 = Minimum gain only Table 131: HP_L_GAIN (Page 0: 0x000000D1) Bit Mode Symbol Description Reset 5:0 R/W hp_l_amp_gain HP_L gain control in 1.5 dB steps 0x3B 00 0000 to 01 0100 = reserved 01 0101 = -57.0 dB 01 0110 = -55.5 dB 01 0111 = -54.0 dB continuing in 1.5 dB steps through... 11 1011 = 0.0 dB to… 11 1101 = 3 dB 11 1110 = 4.5 dB 11 1111 = 6.0 dB Datasheet Revision 2.3 103 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 132: HP_R_CTRL (Page 0: 0x000000D2) Bit Mode Symbol Description Reset 7 R/W hp_r_amp_en HP_R amplifier control 0x0 0 = Headphone right amplifier disabled 1 = Headphone right amplifier enabled 6 R/W hp_r_amp_mute_en HP_R amplifier mute control 0x1 0 = Headphone right amplifier unmuted 1 = Headphone right amplifier muted 5 R/W hp_r_amp_ramp_en HP_R amplifier gain ramping control 0x0 0 = gain changes are instant 1 = gain changes are ramped between old and new gain values Note that this setting overrides zero crossing 4 R/W hp_r_amp_zc_en HP_R amplifier zero cross control 0x0 0 = gain changes are instant 1 = gain changes are performed when the data crosses zero Note that this setting is overridden by the ramp setting 3 R/W hp_r_amp_oe HP_R amplfier output enabling control 0x0 0 = output is high impedence 1 = output is driven 2 R/W hp_r_amp_min_gain _en HP_R amplifier gain held at the minimum value 0x0 0 = Normal gain operation 1 = Minimum gain only Table 133: HP_R_GAIN (Page 0: 0x000000D3) Bit Mode Symbol Description Reset 5:0 R/W hp_r_amp_gain HP_R gain control in 1.5 dB steps 0x3B 00 0000 to 01 0100 = reserved 01 0101 = -57.0 dB 01 0110 = -55.5 dB 01 0111 = -54.0 dB continuing in 1.5 dB steps through... 11 1011 = 0.0 dB to… 11 1101 = 3 dB 11 1110 = 4.5 dB 11 1111 = 6.0 dB Datasheet Revision 2.3 104 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 134: HP_SNGL_CTRL (Page 0: 0x000000D4) Bit Mode Symbol Description Reset 7 R/W hp_amp_stereo_dete ct_en Enable the detection of stereo headphones 0x0 6 R/W hp_amp_load_detect _en Enable the load detect function on both HPL and HPR. 0x0 2 R hpr_amp_load_detec t_status HPR load detect comparator status. 0 = No headphone load preset 1 = Headphone load present 0x0 1 R hpl_amp_load_detec t_status HPL load detect comparator status 0x0 0 = No headphone load preset 1 = Headphone load present 0 R hp_amp_stereo_dete ct_status HP stereo detect status 0x0 0 = Mono 1 = Stereo Table 135: HP_DIFF_CTRL (Page 0: 0x000000D5) Bit Mode Symbol Description Reset 4 R/W hp_amp_single_sup ply_en Control of single supply operation for the headphone amplifiers This enables headphone amplifier operation from a single supply, that is, with HPCSP connected to VDD, and with HPSCN connected to GND on the PCB 0 = charge pump mode 1 = single supply mode 0x0 0 R/W hp_amp_diff_mode_ en Enables differential headphone output 0x0 0 = Single-ended output 1 = Differential output Table 136: HP_DIFF_UNLOCK (Page 0: 0x000000D7) Bit Mode Symbol Description Reset 0 - hp_diff_unlock Controls access to the hp_amp_single_supply_en register. To unlock write access to hp_amp_single_supply_en, write 0xC3 to this address. 0xC3 Datasheet Revision 2.3 105 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 137: Register map hpldet_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000D8 hpldet_jack_ HPLDET_JAC hpldet_jack_thr en K 0x000000D9 hpldet_disch HPLDET_CTR L Reserved arge_en 0x000000DA HPLDET_TES hpldet_jack_debounce Reserved T hpldet_comp _sts hpldet_jack_rate hpldet_hyst_ hpldet_comp en _inv Reserved Table 138: HPLDET_JACK (Page 0: 0x000000D8) Bit Mode Symbol Description Reset 7 R/W hpldet_jack_en Accessory detect jack detection 0x0 0 = Disabled 1 = Enabled 6:5 R/W hpldet_jack_thr Threshold level for jack detection measured as a percentage of VDD 0x0 00 = 84% 01 = 88% 10 = 92% 11 = 96% 4:3 R/W hpldet_jack_debounc e HPL jack detection debounce control. Number of debounce measurements taken before a jack insertion is confirmed and the host is informed. Debounce measurements are separated by the time defined by accdet_jack_rate, so it will take up to accdet_jack_rate*accdet_jack_deb to successfully determine a jack insertion. No debouncing is performed for removal. 0x1 00 = no debounce 01 = 2 10 = 3 11 = 4 2:0 R/W hpldet_jack_rate Time between jack detection measurements when there is no jack or a 3-pole jack is inserted 0x3 0 = 5 us 1 = 10 us 2 = 20 us 3 = 40 us 4 = 80 us 5 = 160 us 6 = 320 us 7 = 640 us Datasheet Revision 2.3 106 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 139: HPLDET_CTRL (Page 0: 0x000000D9) Bit Mode Symbol Description Reset 7 R/W hpldet_discharge_en Control of automatic discharge of MICBIAS on jack removal 0x0 0 = Disabled 1 = Enabled 1 R/W hpldet_hyst_en HPL detection hysteresis control 0x0 0 = Disabled 1 = Enabled 0 R/W hpldet_comp_inv HPL detector output inversion control Setting this register causes the HPL detector comparator output signal tobe inverted 0x0 0 = Not inverted 1 = Inverted Table 140: HPLDET_TEST (Page 0: 0x000000DA) Bit Mode Symbol Description Reset 4 R hpldet_comp_sts HPLDET Comparator output 0 = No headphone detected 1 = Headphone detected 0x0 Table 141: Register map in_filter_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000018 IN_1L_FILTER _CTRL 0x00000019 IN_1R_FILTE R_CTRL 0x0000001A IN_2L_FILTER _CTRL 0x0000001B IN_2R_FILTE R_CTRL Datasheet in_1l_filter_e in_1l_mute_e in_1l_ramp_e n n n in_1r_filter_e in_1r_mute_ in_1r_ramp_ n en en in_2l_filter_e n in_2l_mute_e in_2l_ramp_e n n in_2r_filter_e in_2r_mute_ in_2r_ramp_ n en en Revision 2.3 107 of 171 Reserved Reserved Reserved Reserved 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 142: IN_1L_FILTER_CTRL (Page 0: 0x00000018) Bit Mode Symbol Description Reset 7 R/W in_1l_filter_en IN_1L_FILTER control 0x0 0 = IN_1L_FILTER disabled 1 = IN_1L_FILTER enabled 6 R/W in_1l_mute_en IN_1L_FILTER mute control 0x0 0 = IN_1L_FILTER unmuted 1 = IN_1L_FILTER muted 5 R/W in_1l_ramp_en IN_1L_FILTER gain ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. Table 143: IN_1R_FILTER_CTRL (Page 0: 0x00000019) Bit Mode Symbol Description Reset 7 R/W in_1r_filter_en IN_1R_FILTER control 0x0 0 = IN_1R_FILTER disabled 1 = IN_1R_FILTER enabled 6 R/W in_1r_mute_en IN_1R_FILTER mute control 0x0 0 = IN_1R_FILTER unmuted 1 = IN_1R_FILTER muted 5 R/W in_1r_ramp_en IN_1R_FILTER gain ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. Table 144: IN_2L_FILTER_CTRL (Page 0: 0x0000001A) Bit Mode Symbol Description Reset 7 R/W in_2l_filter_en IN_2L_FILTER control 0x0 0 = IN_2L_FILTER disabled 1 = IN_2L_FILTER enabled 6 R/W in_2l_mute_en IN_2L_FILTER mute control 0x0 0 = IN_2L_FILTER unmuted 1 = IN_2L_FILTER muted 5 R/W in_2l_ramp_en IN_2L_FILTER gain ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. Datasheet Revision 2.3 108 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 145: IN_2R_FILTER_CTRL (Page 0: 0x0000001B) Bit Mode Symbol Description Reset 7 R/W in_2r_filter_en IN_2R_FILTER control 0x0 0 = IN_2R_FILTER disabled 1 = IN_2R_FILTER enabled 6 R/W in_2r_mute_en IN_2R_FILTER mute control 0x0 0 = IN_2R_FILTER unmuted 1 = IN_2R_FILTER muted 5 R/W in_2r_ramp_en IN_2R_FILTER gain ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. Table 146: Register map in_hpf_filter_cor_00 page 0 Address # 7 6 5 4 in_1_hpf_en Reserved in_1_audio_hpf_corner in_2_hpf_en Reserved in_2_audio_hpf_corner 3 2 1 0 Name Register Page 0 0x000000BC IN_1_HPF_FIL TER_CTRL 0x000000BD IN_2_HPF_FIL TER_CTRL Datasheet Revision 2.3 109 of 171 in_1_voice_e n in_2_voice_e n in_1_voice_hpf_corner in_2_voice_hpf_corner 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 147: IN_1_HPF_FILTER_CTRL (Page 0: 0x000000BC) Bit Mode Symbol Description Reset 7 R/W in_1_hpf_en ADC high-pass filter control 0x1 0 = ADC high-pass filter disabled 1 = ADC high-pass filter enabled 5:4 R/W in_1_audio_hpf_corn er 3 dB cut-off control for the High Pass Filter 0x0 At 48 kHz, the 3 dB cut-off is at: 00 = 2 Hz 01 = 4 Hz 10 = 8 Hz 11 = 16 Hz For other sample rates the corner cut-off points scale proprtionately 3 R/W in_1_voice_en ADC voice filter control 0x0 0 = ADC voice filter disabled 1 = ADC voice filter enabled 2:0 R/W in_1_voice_hpf_corn er 3 dB cut-off control for the high-pass voice filter 0x0 At 8 kHz, the 3 dB cut-off is at: 000 = 2.5 Hz 001 = 25 Hz 010 = 50 Hz 011 = 100 Hz 100 = 150 Hz 101 = 200 Hz 110 = 300 Hz 111 = 400 Hz Datasheet Revision 2.3 110 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 148: IN_2_HPF_FILTER_CTRL (Page 0: 0x000000BD) Bit Mode Symbol Description Reset 7 R/W in_2_hpf_en ADC high-pass filter control 0x1 0 = ADC high-pass filter disabled 1 = ADC high-pass filter enabled 5:4 R/W in_2_audio_hpf_corn er 3 dB cut-off control for the High Pass Filter 0x0 At 48 kHz, the 3 dB cut-off is at: 00 = 2 Hz 01 = 4 Hz 10 = 8 Hz 11 = 16 Hz For other sample rates the corner cut-off points scale proprtionately 3 R/W in_2_voice_en ADC voice filter control 0x0 0 = ADC voice filter disabled 1 = ADC voice filter enabled 2:0 R/W in_2_voice_hpf_corn er 3 dB cut-off control for the Voice filter 0x0 At 8 kHz, the 3 dB cut-off is at: 000 = 2.5 Hz 001 = 25 Hz 010 = 50 Hz 011 = 100 Hz 100 = 150 Hz 101 = 200 Hz 110 = 300 Hz 111 = 400 Hz Table 149: Register map irq_cor_00 page 0 Address Name # 7 6 5 4 3 2 1 0 Register Page 0 0x000000EC EVENT_STAT US hpldet_jack_ sts 0x000000ED EVENT hpldet_jack_ event 0x000000EE EVENT_MAS hpldet_jack_ event_irq_ms K Datasheet Reserved Reserved lvl_det_event Reserved lvl_det_event _msk k Revision 2.3 111 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 150: EVENT_STATUS (Page 0: 0x000000EC) Bit Mode Symbol Description Reset 7 R hpldet_jack_sts Status of jack insertion 0x0 0 - No jack inserted 1 - Jack Inserted Table 151: EVENT (Page 0: 0x000000ED) Bit Mode Symbol Description Reset 7 R/W hpldet_jack_event Jack event, write 1 to clear 0x0 0 R/W lvl_det_event Level Detect Event 0x0 Table 152: EVENT_MASK (Page 0: 0x000000EE) Bit Mode Symbol Description Reset 7 R/W hpldet_jack_event_ir q_msk Mask HPL jack_event from nIRQ pin 0x0 0 = HPL Jack interrupts are sent to the nIRQ pin 1 = No HPL Jack interrupts are sent to the nIRQ pin 0 R/W lvl_det_event_msk Level Detect Event mask 0x0 0 = Level Detect interrupts are sent to the nIRQ pin 1 = No Level Detect interrupts are sent to the nIRQ pin Table 153: Register map levels_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000E0 io_voltage_le Reserved IO_CTRL 0x000000E1 ldo_en LDO_CTRL Reserved ldo_level_select vel Reserved Table 154: IO_CTRL (Page 0: 0x000000E0) Bit Mode Symbol Description Reset 0 R/W io_voltage_level Digital I/O voltage range control 0x0 0 = 2.5 to 3.6 V 1 = 1.5 to 2.5 V Datasheet Revision 2.3 112 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 155: LDO_CTRL (Page 0: 0x000000E1) Bit Mode Symbol Description Reset 7 R/W ldo_en Audio sub-system digital LDO control. The master bias must be enabled for the LDO to operate. 0x0 0 = LDO bypassed (digital operates from LDO5) 1 = LDO active 5:4 R/W ldo_level_select Audio sub-system digital LDO level select 0x0 00 = 1.05 V 01 = 1.10 V 10 = 1.20 V 11 = 1.40 V Table 156: Register map lvl_det_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000050 LVL_DET_CT RL Reserved 0x00000051 LVL_DET_LE lvl_det_en Reserved lvl_det_level VEL Table 157: LVL_DET_CTRL (Page 0: 0x00000050) Bit Mode Symbol Description Reset 3:0 R/W lvl_det_en Level Detect channel enable 0x0 bit 0 = Channel 1 Left bit 1 = Channel 1 Right bit 2 = Channel 2 Left bit 3 = Channel 2 Right For all bits, 0 = Channel is disabled 1 = Channel is enabled Datasheet Revision 2.3 113 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 158: LVL_DET_LEVEL (Page 0: 0x00000051) Bit Mode Symbol Description Reset 6:0 R/W lvl_det_level Sets the threshold above which the ALC enters anti-clip operation. The threshold represented by this field setting, where x is the value of the bit-field, is x = ((x+1)/128) FS 0x7F 000 0000 = 0.0078 FS 000 0001 = 0.0156 FS 000 0010 = 0.0234 FS continuing in 0.0078 FS steps to... 111 1101 = 0.9844 FS 111 1110 = 0.9922 FS 111 1111 = 1.0000FS Table 159: Register map mic_cor_00 page 0 Address # 7 6 0x000000B4 mic_1_amp_ mic_1_amp_ MIC_1_CTRL en mute_en 5 4 3 2 1 0 Name Register Page 0 0x000000B5 MIC_1_GAIN Reserved Reserved 0x000000B7 MIC_1_SELE mic_1_amp_gain Reserved mic_1_amp_in_sel CT 0x000000B8 mic_2_amp_ mic_2_amp_ MIC_2_CTRL en mute_en 0x000000B9 MIC_2_GAIN Reserved Reserved 0x000000BB MIC_2_SELE mic_2_amp_gain Reserved mic_2_amp_in_sel CT Table 160: MIC_1_CTRL (Page 0: 0x000000B4) Bit Mode Symbol Description Reset 7 R/W mic_1_amp_en MIC_1 amplifier control 0x0 0 = MIC_1 amplifier is disabled 1 = MIC_1 amplifier is enabled 6 R/W mic_1_amp_mute_e n MIC_1 amplifier mute control 0x1 0 = MIC_1 amplifier unmuted 1 = MIC_1 amplifier muted Datasheet Revision 2.3 114 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 161: MIC_1_GAIN (Page 0: 0x000000B5) Bit Mode Symbol Description Reset 2:0 R/W mic_1_amp_gain MIC_1 amplifier gain control 0x1 000 = -6 dB 001 = 0 dB 010 = 6 dB 011 = 12 dB 100 = 18 dB 101 = 24 dB 110 = 30 dB 111 = 36 dB Table 162: MIC_1_SELECT (Page 0: 0x000000B7) Bit Mode Symbol Description Reset 1:0 R/W mic_1_amp_in_sel MIC_1 input source select 0x0 00 = differential 01 = MIC_1_P single-ended 10 = MIC_1_N single-ended 11 = reserved Table 163: MIC_2_CTRL (Page 0: 0x000000B8) Bit Mode Symbol Description Reset 7 R/W mic_2_amp_en MIC_2 amplifier control 0x0 0 = MIC_2 amplifier is disabled 1 = MIC_2 amplifier is enabled 6 R/W mic_2_amp_mute_e n MIC_2 amplifier mute control 0x1 0 = MIC_2 amplifier is unmuted 1 = MIC_2 amplifier is muted Table 164: MIC_2_GAIN (Page 0: 0x000000B9) Bit Mode Symbol Description Reset 2:0 R/W mic_2_amp_gain MIC_2 amplifier gain control 0x1 000 = -6 dB 001 = 0 dB 010 = 6 dB 011 = 12 dB 100 = 18 dB 101 = 24 dB 110 = 30 dB 111 = 36 dB Datasheet Revision 2.3 115 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 165: MIC_2_SELECT (Page 0: 0x000000BB) Bit Mode Symbol Description Reset 1:0 R/W mic_2_amp_in_sel MIC_2 input source select 0x0 00 = Differential 01 = MIC_1_P single-ended 10 = MIC_1_N single-ended 11 = Reserved Table 166: Register map micbias_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000FC MICBIAS_CT RL 0x000000FD MICBIAS_EN Datasheet micbias_2_lp micbias_1_lp micbias_2_level _mode Reserved micbias_1_level _mode micbias_2_e n Revision 2.3 116 of 171 Reserved micbias_1_e n 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 167: MICBIAS_CTRL (Page 0: 0x000000FC) Bit Mode Symbol Description Reset 7 R/W micbias_2_lp_mode MICBIAS2 low-power mode control 0x0 0 = MICBIAS2 low-power mode disabled 1 = MICBIAS2 low-power mode enabled Note that the microphone bias power mode can only be changed while the associated micbias circuit is disabled (micbias_2_en = 0) 6:4 R/W micbias_2_level Microphone bias 2 level control 0x0 000 = 1.6 V 001 = 1.8 V 010 = 2.0 V 011 = 2.2 V 100 = 2.4 V 101 = 2.6 V 110 = 2.8 V 111 = 3.0 V Note that the microphone bias level can only be changed while the associated micbias circuit is disabled (micbias_2_en = 0) 3 R/W micbias_1_lp_mode MICBIAS1 low-power mode control 0x0 0 = MICBIAS1 low-power mode disabled 1 = MICBIAS1 low-power mode enabled Note that the microphone bias power mode can only be changed while the associated micbias circuit is disabled (micbias_1_en = 0) 2:0 R/W micbias_1_level Microphone bias 1 level control 0x0 000 = 1.6 V 001 = 1.8 V 010 = 2.0 V 011 = 2.2 V 100 = 2.4 V 101 = 2.6 V 110 = 2.8 V 111 = 3.0 V Note that the microphone bias level can only be changed while the associated micbias circuit is disabled (micbias_1_en = 0) Table 168: MICBIAS_EN (Page 0: 0x000000FD) Bit Mode Symbol Description Reset 4 R/W micbias_2_en Microphone bias 2 control 0x0 0 = MICBIAS_2 is disabled 1 = MICBIAS_2 is enabled 0 R/W micbias_1_en Microphone bias 1 control 0x0 0 = MICBIAS_1 is disabled 1 = MICBIAS_1 is enabled Datasheet Revision 2.3 117 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 169: Register map mixin_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x0000002C mixin_1_amp mixin_1_amp mixin_1_amp mixin_1_amp MIXIN_1_CTR _en L _mute_en _ramp_en _zc_en mixin_1_mix Reserved _sel 0x0000002D MIXIN_1_GAI N Reserved 0x0000002E MIXIN_2_CTR mixin_1_amp_gain mixin_2_amp mixin_2_amp mixin_2_amp mixin_2_amp _en _mute_en _ramp_en _zc_en L mixin_2_mix _sel Reserved 0x0000002F MIXIN_2_GAI Reserved mixin_2_amp_gain N Table 170: MIXIN_1_CTRL (Page 0: 0x0000002C) Bit Mode Symbol Description Reset 7 R/W mixin_1_amp_en MIXIN_1 amplifier control 0x0 0 = Amplifier disabled 1 = Amplifier enabled 6 R/W mixin_1_amp_mute_ en MIXIN_1 amplifier mute control 0x1 0 = Amplifier unmuted 1 = Amplifier muted 5 R/W mixin_1_amp_ramp_ en MIXIN_1 amplifier gain ramping control. Gain ramping overrides the zero crossing setting. 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled 4 R/W mixin_1_amp_zc_en MIXIN_1 amplifier zero cross control. When set, gain changes are applied only when the signal crosses zero. 0x0 0 = Gain changes are instant 1 = Gain changes are performed when the signal crosses zero 3 R/W mixin_1_mix_sel MIXIN_1 amplifier control 0x1 0 = MIXIN_1 amplifier is disabled 1 = MIXIN_1 amplifier is enabled Datasheet Revision 2.3 118 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 171: MIXIN_1_GAIN (Page 0: 0x0000002D) Bit Mode Symbol Description Reset 3:0 R/W mixin_1_amp_gain MIXIN_1_AMP gain control 0x3 0000 = -4.5 dB 0001 = -3.0 dB 0010 = -1.5 dB continuing in 1.5 dB steps to… 1110 = 16.5 dB 1111 = 18.0 dB Table 172: MIXIN_2_CTRL (Page 0: 0x0000002E) Bit Mode Symbol Description Reset 7 R/W mixin_2_amp_en MIXIN_2 amplifier control 0x0 0 = MIXIN_2 amplifier disabled 1 = MIXIN_2 amplifier enabled 6 R/W mixin_2_amp_mute_ en MIXIN_2 amplifier mute control 0x1 0 = MIXIN_2 amplifier unmuted 1 = MIXIN_2 amplifier muted 5 R/W mixin_2_amp_ramp_ en MIXIN_2 amplifier gain ramping control. Gain ramping overrides the zero crossing setting. 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled 4 R/W mixin_2_amp_zc_en MIXIN_2 amplifier zero cross control. When set, gain changes are applied only when the signal crosses zero. 0x0 0 = Gain changes are instant 1 = Gain changes are performed when the signal crosses zero 3 R/W mixin_2_mix_sel MIXIN_2 mixer enable. 0x1 0 = MIXIN_2 mixer is disabled 1 = MIXIN_2 mixer is enabled Datasheet Revision 2.3 119 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 173: MIXIN_2_GAIN (Page 0: 0x0000002F) Bit Mode Symbol Description Reset 3:0 R/W mixin_2_amp_gain MIXIN_2_AMP gain control 0x3 0000 = -4.5 dB 0001 = -3.0 dB 0010 = -1.5 dB continuing in 1.5 dB steps to… 1110 = 16.5 dB 1111 = 18.0 dB Table 174: Register map mixout_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000CC mixout_l_am MIXOUT_L_C TRL Reserved p_en 0x000000CD MIXOUT_L_G Reserved mixout_l_amp_gain AIN 0x000000CE MIXOUT_R_C mixout_r_am p_en TRL Reserved 0x000000CF MIXOUT_R_G AIN Reserved mixout_r_amp_gain Table 175: MIXOUT_L_CTRL (Page 0: 0x000000CC) Bit Mode Symbol Description Reset 7 R/W mixout_l_amp_en MIXOUT_L mixer amplifier control 0x0 0 = Disabled 1 = Enabled Table 176: MIXOUT_L_GAIN (Page 0: 0x000000CD) Bit Mode Symbol Description Reset 1:0 R/W mixout_l_amp_gain MIXOUT_L gain control 0x3 00 = reserved 01 = -1.0 dB 10 = -0.5 dB 11 = 0.0 dB Datasheet Revision 2.3 120 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 177: MIXOUT_R_CTRL (Page 0: 0x000000CE) Bit Mode Symbol Description Reset 7 R/W mixout_r_amp_en MIXOUT_R mixer amplifier control 0x0 0 = Disabled 1 = Enabled Table 178: MIXOUT_R_GAIN (Page 0: 0x000000CF) Bit Mode Symbol Description Reset 1:0 R/W mixout_r_amp_gain MIXOUT_R gain control 0x3 00 = Reserved 01 = -1.0 dB 10 = -0.5 dB 11 = 0.0 dB Table 179: Register map out_filter_config_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000024 OUT_1_HPF_ FILTER_CTRL out_1_hpf_e n Reserved 0x00000025 OUT_1_EQ_1 2_FILTER_CT RL out_1_audio_hpf_corner out_1_voice_ en out_1_voice_hpf_corner out_1_eq_band2 out_1_eq_band1 out_1_eq_band4 out_1_eq_band3 0x00000026 OUT_1_EQ_3 4_FILTER_CT RL 0x00000027 OUT_1_EQ_5 _FILTER_CTR out_1_eq_en Reserved out_1_eq_band5 L 0x00000028 OUT_1_BIQ_5 STAGE_CTRL out_1_biq_5s tage_filter_en out_1_biq_5s tage_mute_e n Reserved 0x00000029 OUT_1_BIQ_5 out_1_biq_5stage_data STAGE_DATA 0x0000002A OUT_1_BIQ_5 STAGE_ADD R Datasheet Reserved out_1_biq_5stage_addr Revision 2.3 121 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 180: OUT_1_HPF_FILTER_CTRL (Page 0: 0x00000024) Bit Mode Symbol Description Reset 7 R/W out_1_hpf_en Output audio high pass filter control 0x1 0 = Disabled 1 = Enabled 5:4 R/W out_1_audio_hpf_cor ner Audio HPF 3 dB cut-off control for the Audio HPF 0x0 At 48 kHz sample rate, the 3 dB cut-off is at: 00 = 2 Hz 01 = 4 Hz 10 = 8 Hz 11 = 16 Hz For other sample rates, the corner cut-off points scale proportionately 3 R/W out_1_voice_en Output voice high pass filter control 0x0 0 = Disabled 1 = Enable 2:0 R/W out_1_voice_hpf_cor ner 3dB cut-off for the Voice HPF 0x0 At 8 kHz sample rate, the 3 dB cut-off is at: 000 = 2.5 Hz 001 = 25 Hz 010 = 50 Hz 011 = 100 Hz 100 = 150 Hz 101 = 200 Hz 110 = 300 Hz 111 = 400 Hz For other sample rates, the corner cut-off points scale proportionately Datasheet Revision 2.3 122 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 181: OUT_1_EQ_12_FILTER_CTRL (Page 0: 0x00000025) Bit Mode Symbol Description Reset 7:4 R/W out_1_eq_band2 Gain control for the band 2 of the 5-Band EQ 0x7 0000 = -10.5dB 0001 = -9.0 dB 0010 = -7.5 dB continuing in 1.5 dB steps through… 0111 = 0 dB to... 1101 = 9.0 dB 1110 = 10.5 dB 1111 = 12.0 dB 3:0 R/W out_1_eq_band1 Gain control for the band 1 of the 5-Band EQ 0x7 0000 = -10.5dB 0001 = -9.0 dB 0010 = -7.5 dB continuing in 1.5 dB steps through… 0111 = 0 dB to... 1101 = 9.0 dB 1110 = 10.5 dB 1111 = 12.0 dB Datasheet Revision 2.3 123 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 182: OUT_1_EQ_34_FILTER_CTRL (Page 0: 0x00000026) Bit Mode Symbol Description Reset 7:4 R/W out_1_eq_band4 Gain control for the band 4 of the 5-Band EQ 0x7 0000 = -10.5dB 0001 = -9.0 dB 0010 = -7.5 dB continuing in 1.5 dB steps through… 0111 = 0 dB to... 1101 = 9.0 dB 1110 = 10.5 dB 1111 = 12.0 dB 3:0 R/W out_1_eq_band3 Gain control for the band 3 of the 5-Band EQ 0x7 0000 = -10.5dB 0001 = -9.0 dB 0010 = -7.5 dB continuing in 1.5 dB steps through… 0111 = 0 dB to... 1101 = 9.0 dB 1110 = 10.5 dB 1111 = 12.0 dB Table 183: OUT_1_EQ_5_FILTER_CTRL (Page 0: 0x00000027) Bit Mode Symbol Description Reset 7 R/W out_1_eq_en 5-band EQ control. 0x0 Note that when enabled, the 5-band EQ will apply a 12 dB attenuation, which can be compensated by OUTFILT digital gain 0 = 5-band EQ disabled 1 = 5-band EQ enabled 3:0 R/W out_1_eq_band5 Gain control for the band 5 of the 5-Band EQ 0x7 0000 = -10.5dB 0001 = -9.0 dB 0010 = -7.5 dB continuing in 1.5 dB steps through… 0111 = 0 dB to... 1101 = 9.0 dB 1110 = 10.5 dB 1111 = 12.0 dB Datasheet Revision 2.3 124 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 184: OUT_1_BIQ_5STAGE_CTRL (Page 0: 0x00000028) Bit Mode Symbol Description Reset 7 R/W out_1_biq_5stage_fil ter_en 5-stage BiQuad filter control 0x0 0 = 5-stage BiQ filter disabled 1 = 5-stage BiQ filter enabled 6 R/W out_1_biq_5stage_m ute_en 5-stage BiQuad filter mute control 0x1 0 = 5-stage BiQ filter unmuted 1 = 5-stage BiQ filter muted Table 185: OUT_1_BIQ_5STAGE_DATA (Page 0: 0x00000029) Bit Mode Symbol Description Reset 7:0 R/W out_1_biq_5stage_d ata Data to be written to the coefficient registers of the 5-stage BiQuad filter 0x0 Table 183: OUT_1_BIQ_5STAGE_ADDR (Page 0: 0x0000002A) Bit Mode Symbol Description Reset 5:0 R/W out_1_biq_5stage_a ddr Address of the 5-stage biquad coefficient register Even numbered addresses in this register field write the lower byte of the 16-bit cooefficient, and odd numbered addresses write the upper byte of the 16bit cooefficient A write to the biq_addr register triggers a write of the data 0x0 Table 187: Register map out_filter_cor_00 page 0 Address Name # 7 6 5 4 3 out_1l_filter_ out_1l_mute_ out_1l_ramp out_1l_subra out_1l_biq_5 en en _en nge_en stage_sel out_1r_filter_ out_1r_mute out_1r_ramp out_1r_subra out_1r_biq_5 en _en _en nge_en stage_sel 2 1 0 Register Page 0 0x00000020 OUT_1L_FILT ER_CTRL 0x00000021 OUT_1R_FILT ER_CTRL Datasheet Revision 2.3 125 of 171 Reserved Reserved 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 188: OUT_1L_FILTER_CTRL (Page 0: 0x00000020) Bit Mode Symbol Description Reset 7 R/W out_1l_filter_en DAC_L control 0x0 0 = DAC_L disabled 1 = DAC_L enabled 6 R/W out_1l_mute_en DAC_L mute control 0x1 0 = DAC_L unmuted 1 = DAC_L muted 5 R/W out_1l_ramp_en DAC_L digital gain-ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. 4 R/W out_1l_subrange_en DAC_L gain-subrange Mode. This register only has an effect if out_1l_ramp_en is set If DAC _L digital gain ramping is enabled (out_1l_ramp_en = 1), and this subranging register field is also set, the ramping process will step though much finer gain increments. 0x0 0 = Gain-ramping does not use the intermediate subrange steps 1 = Gain-ramping uses the intermediate subrange steps 3 R/W out_1l_biq_5stage_s el DAC_L 5-stage BiQuad left filter control 0x0 0 = 5-stage BiQuad left filter not selected 1 = 5-stage BiQuad left filter selected Datasheet Revision 2.3 126 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 189: OUT_1R_FILTER_CTRL (Page 0: 0x00000021) Bit Mode Symbol Description Reset 7 R/W out_1r_filter_en DAC_R control 0x0 0 = DAC_R disabled 1 = DAC_R enabled 6 R/W out_1r_mute_en DAC_R mute control 0x1 0 = DAC_R unmuted 1 = DAC_R muted 5 R/W out_1r_ramp_en DAC_R digital gain-ramping control 0x0 0 = Ramping is disabled. The gain steps are applied immediately. 1 = Ramping is enabled. 4 R/W out_1r_subrange_en DAC_R gain-subrange Mode. This register only has an effect if out_1r_ramp_en is set If DAC _R digital gain ramping is enabled (out_1r_ramp_en = 1), and this subranging register field is also set, the ramping process will step though much finer gain increments. 0x0 0 = Gain-ramping does not use the intermediate subrange steps 1 = Gain-ramping uses the intermediate subrange steps 3 R/W out_1r_biq_5stage_s el DAC_R 5-stage BiQuad right filter control 0x0 0 = 5-stage BiQuad right filter not selected 1 = 5-stage BiQuad right filter selected Datasheet Revision 2.3 127 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 190: Register map pll_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000091 pll_mode PLL_CTRL 0x00000092 PLL_FRAC_T pll_mclk_sqr Reserved Reserved _en Reserved pll_indiv pll_fbdiv_frac_top OP 0x00000093 PLL_FRAC_B pll_fbdiv_frac_bot OT 0x00000094 PLL_INTEGE R Reserved pll_fbdiv_integer 0x00000095 pll_srm_status PLL_STATUS 0x00000098 PLL_REFOSC pll_refosc_ca l_en _CAL pll_refosc_ca l_start Reserved pll_refosc_cal_ctrl Table 191: PLL_CTRL (Page 0: 0x00000091) Bit Mode Symbol Description Reset 7:6 R/W pll_mode PLL mode control 0x0 00 = Bypass - PLL disabled, and the system clock is MCLK (after input divider) 01 = Normal - PLL enabled, the system clock is a fixed multiple of MCLK 10 = SRM - PLL enabled, and the system clock tracks WCLK 11 = reserved 4 R/W pll_mclk_sqr_en PLL MCLK clock-squarer circuit control 0x0 0 = Clock-squarer disabled 1 = Clock-squarer enabled 2:0 R/W pll_indiv PLL reference input clock (MCLK) control 0x4 000 = 2 to 4.5 MHz 001 = 4.5 to 9 MHz 010 = 9 to 18 MHz 011 = 18 to 36 MHz 100 = 36 to 80 MHz 101 to 111 = reserved Datasheet Revision 2.3 128 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 192: PLL_FRAC_TOP (Page 0: 0x00000092) Bit Mode Symbol Description Reset 4:0 R/W pll_fbdiv_frac_top PLL fractional division value (top bits) 0x0 Table 193: PLL_FRAC_BOT (Page 0: 0x00000093) Bit Mode Symbol Description Reset 7:0 R/W pll_fbdiv_frac_bot PLL fractional division value (bottom bits) 0x0 Table 194: PLL_INTEGER (Page 0: 0x00000094) Bit Mode Symbol Description Reset 6:0 R/W pll_fbdiv_integer PLL integer division value. Writing to this register causes the entire pll_fbdiv value (PLL_INTEGER, PLL_FRAC_TOP, PLL_FRAC_BOT) to be updated. 0x20 Table 195: PLL_STATUS (Page 0: 0x00000095) Bit Mode Symbol Description Reset 7:0 R pll_srm_status PLL/SRM status 0x0 The eight bits represent: bit 0 = MCLK status bit 1 = unused bit 2 = unused bit 3 = PLL lock bit 4 = PLL/SRM active bit 5 = unused bit 6 = unused bit 7 = SRM lock For each bit position: 0 = Inactive or invalid 1 = Active or valid Datasheet Revision 2.3 129 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 196: PLL_REFOSC_CAL (Page 0: 0x00000098) Bit Mode Symbol Description Reset 7 R/W pll_refosc_cal_en Reference oscillator calibration control 0x0 0 = Reference oscillator calibration block is disabled 1 = Reference oscillator calibration block is enabled This register does not control whether or not the reference oscillator runs. The reference oscillator always runs when it is required, that is, when there is no valid MCLK detected and the device is not in standby mode. 6 R/W pll_refosc_cal_start Reference oscillator calibration start control 0x0 0 = Do not trigger the reference oscillator calibration 1 = Trigger the reference oscillator calibration 4:0 R pll_refosc_cal_ctrl Reference oscillator control value. This read-only field contains the calibration data for the reference oscillator once it has been calibrated. 0x0 Table 197: Register map references_cor_00 page 0 Address Name # 7 6 5 4 3 2 1 0 Register Page 0 0x000000DC REFERENCE Reserved bias_en Reserved S Table 198: REFERENCES (Page 0: 0x000000DC) Bit Mode Symbol Description Reset 3 R/W bias_en Master bias control 0x1 0 = Master bias disabled 1 = Master bias enabled Datasheet Revision 2.3 130 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 199: Register map router_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x0000005C DROUTING_O Reserved outdai_1l_src UTDAI_1L 0x0000005D DMIX_OUTDA I_1L_INFILT_1 Reserved outdai_1l_infilt_1l_gain Reserved outdai_1l_infilt_1r_gain Reserved outdai_1l_infilt_2l_gain Reserved outdai_1l_infilt_2r_gain Reserved outdai_1l_tonegen_gain Reserved outdai_1l_indai_1l_gain Reserved outdai_1l_indai_1r_gain L_GAIN 0x0000005E DMIX_OUTDA I_1L_INFILT_1 R_GAIN 0x0000005F DMIX_OUTDA I_1L_INFILT_2 L_GAIN 0x00000060 DMIX_OUTDA I_1L_INFILT_2 R_GAIN 0x00000061 DMIX_OUTDA I_1L_TONEG EN_GAIN 0x00000062 DMIX_OUTDA I_1L_INDAI_1 L_GAIN 0x00000063 DMIX_OUTDA I_1L_INDAI_1 R_GAIN 0x00000064 DROUTING_O Reserved outdai_1r_src UTDAI_1R 0x00000065 DMIX_OUTDA I_1R_INFILT_ Reserved outdai_1r_infilt_1l_gain Reserved outdai_1r_infilt_1r_gain Reserved outdai_1r_infilt_2l_gain 1L_GAIN 0x00000066 DMIX_OUTDA I_1R_INFILT_ 1R_GAIN 0x00000067 DMIX_OUTDA I_1R_INFILT_ 2L_GAIN Datasheet Revision 2.3 131 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Address # 7 6 Company confidential 5 4 3 2 1 0 Name Register Page 0 0x00000068 DMIX_OUTDA I_1R_INFILT_ Reserved outdai_1r_infilt_2r_gain Reserved outdai_1r_tonegen_gain Reserved outdai_1r_indai_1l_gain Reserved outdai_1r_indai_1r_gain 2R_GAIN 0x00000069 DMIX_OUTDA I_1R_TONEG EN_GAIN 0x0000006A DMIX_OUTDA I_1R_INDAI_1 L_GAIN 0x0000006B DMIX_OUTDA I_1R_INDAI_1 R_GAIN 0x0000006C DROUTING_O Reserved outfilt_1l_src UTFILT_1L 0x0000006D DMIX_OUTFIL T_1L_INFILT_ 1L_GAIN Reserved outfilt_1l_infilt_1l_gain Reserved outfilt_1l_infilt_1r_gain Reserved outfilt_1l_infilt_2l_gain Reserved outfilt_1l_infilt_2r_gain Reserved outfilt_1l_tonegen_gain Reserved outfilt_1l_indai_1l_gain Reserved outfilt_1l_indai_1r_gain 0x0000006E DMIX_OUTFIL T_1L_INFILT_ 1R_GAIN 0x0000006F DMIX_OUTFIL T_1L_INFILT_ 2L_GAIN 0x00000070 DMIX_OUTFIL T_1L_INFILT_ 2R_GAIN 0x00000071 DMIX_OUTFIL T_1L_TONEG EN_GAIN 0x00000072 DMIX_OUTFIL T_1L_INDAI_1 L_GAIN 0x00000073 DMIX_OUTFIL T_1L_INDAI_1 R_GAIN 0x00000074 DROUTING_O UTFILT_1R Datasheet Reserved outfilt_1r_src Revision 2.3 132 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Address # 7 6 Company confidential 5 4 3 2 1 0 Name Register Page 0 0x00000075 DMIX_OUTFIL T_1R_INFILT_ Reserved outfilt_1r_infilt_1l_gain Reserved outfilt_1r_infilt_1r_gain Reserved outfilt_1r_infilt_2l_gain Reserved outfilt_1r_infilt_2r_gain Reserved outfilt_1r_tonegen_gain Reserved outfilt_1r_indai_1l_gain Reserved outfilt_1r_indai_1r_gain 1L_GAIN 0x00000076 DMIX_OUTFIL T_1R_INFILT_ 1R_GAIN 0x00000077 DMIX_OUTFIL T_1R_INFILT_ 2L_GAIN 0x00000078 DMIX_OUTFIL T_1R_INFILT_ 2R_GAIN 0x00000079 DMIX_OUTFIL T_1R_TONEG EN_GAIN 0x0000007A DMIX_OUTFIL T_1R_INDAI_ 1L_GAIN 0x0000007B DMIX_OUTFIL T_1R_INDAI_ 1R_GAIN 0x0000007C DROUTING_O Reserved outdai_2l_src UTDAI_2L 0x0000007D DMIX_OUTDA I_2L_INFILT_1 Reserved outdai_2l_infilt_1l_gain Reserved outdai_2l_infilt_1r_gain Reserved outdai_2l_infilt_2l_gain Reserved outdai_2l_infilt_2r_gain Reserved outdai_2l_tonegen_gain L_GAIN 0x0000007E DMIX_OUTDA I_2L_INFILT_1 R_GAIN 0x0000007F DMIX_OUTDA I_2L_INFILT_2 L_GAIN 0x00000080 DMIX_OUTDA I_2L_INFILT_2 R_GAIN 0x00000081 DMIX_OUTDA I_2L_TONEG EN_GAIN Datasheet Revision 2.3 133 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Address # 7 6 Company confidential 5 4 3 2 1 0 Name Register Page 0 0x00000082 DMIX_OUTDA I_2L_INDAI_1 Reserved outdai_2l_indai_1l_gain Reserved outdai_2l_indai_1r_gain L_GAIN 0x00000083 DMIX_OUTDA I_2L_INDAI_1 R_GAIN 0x00000084 DROUTING_O Reserved outdai_2r_src UTDAI_2R 0x00000085 DMIX_OUTDA I_2R_INFILT_ Reserved outdai_2r_infilt_1l_gain Reserved outdai_2r_infilt_1r_gain Reserved outdai_2r_infilt_2l_gain Reserved outdai_2r_infilt_2r_gain Reserved outdai_2r_tonegen_gain Reserved outdai_2r_indai_1l_gain Reserved outdai_2r_indai_1r_gain 1L_GAIN 0x00000086 DMIX_OUTDA I_2R_INFILT_ 1R_GAIN 0x00000087 DMIX_OUTDA I_2R_INFILT_ 2L_GAIN 0x00000088 DMIX_OUTDA I_2R_INFILT_ 2R_GAIN 0x00000089 DMIX_OUTDA I_2R_TONEG EN_GAIN 0x0000008A DMIX_OUTDA I_2R_INDAI_1 L_GAIN 0x0000008B DMIX_OUTDA I_2R_INDAI_1 R_GAIN Datasheet Revision 2.3 134 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 200: DROUTING_OUTDAI_1L (Page 0: 0x0000005C) Bit Mode Symbol Description Reset 6:0 R/W outdai_1l_src Data input selection control for the OUTDAI_1L output stream 0x1 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Table 201: DMIX_OUTDAI_1L_INFILT_1L_GAIN (Page 0: 0x0000005D) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_infilt_1l_ga in Gain control for the INFILT_1L to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 202: DMIX_OUTDAI_1L_INFILT_1R_GAIN (Page 0: 0x0000005E) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_infilt_1r_g ain Gain control for the INFILT_1R to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 135 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 203: DMIX_OUTDAI_1L_INFILT_2L_GAIN (Page 0: 0x0000005F) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_infilt_2l_ga in Gain control for the INFILT_2L to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 204: DMIX_OUTDAI_1L_INFILT_2R_GAIN (Page 0: 0x00000060) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_infilt_2r_g ain Gain control for the INFILT_2R to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 205: DMIX_OUTDAI_1L_TONEGEN_GAIN (Page 0: 0x00000061) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_tonegen_g ain Gain control for the TONEGEN to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 136 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 206: DMIX_OUTDAI_1L_INDAI_1L_GAIN (Page 0: 0x00000062) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_indai_1l_g ain Gain control for the INDAI_1L to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 207: DMIX_OUTDAI_1L_INDAI_1R_GAIN (Page 0: 0x00000063) Bit Mode Symbol Description Reset 4:0 R/W outdai_1l_indai_1r_g ain Gain control for the INDAI_1R to OUTDAI_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 208: DROUTING_OUTDAI_1R (Page 0: 0x00000064) Bit Mode Symbol Description Reset 6:0 R/W outdai_1r_src Data input selection control for the OUTDAI_1R output stream 0x4 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Datasheet Revision 2.3 137 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 209: DMIX_OUTDAI_1R_INFILT_1L_GAIN (Page 0: 0x00000065) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_infilt_1l_g ain Gain control for the INFILT_1L to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 210: DMIX_OUTDAI_1R_INFILT_1R_GAIN (Page 0: 0x00000066) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_infilt_1r_g ain Gain control for the INFILT_1R to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 211: DMIX_OUTDAI_1R_INFILT_2L_GAIN (Page 0: 0x00000067) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_infilt_2l_g ain Gain control for the INFILT_2L to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 138 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 212: DMIX_OUTDAI_1R_INFILT_2R_GAIN (Page 0: 0x00000068) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_infilt_2r_g ain Gain control for the INFILT_2R to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 213: DMIX_OUTDAI_1R_TONEGEN_GAIN (Page 0: 0x00000069) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_tonegen_g ain Gain control for the TONEGEN to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 214: DMIX_OUTDAI_1R_INDAI_1L_GAIN (Page 0: 0x0000006A) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_indai_1l_g ain Gain control for the INDAI_1L to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 139 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 215: DMIX_OUTDAI_1R_INDAI_1R_GAIN (Page 0: 0x0000006B) Bit Mode Symbol Description Reset 4:0 R/W outdai_1r_indai_1r_g ain Gain control for the INDAI_1R to OUTDAI_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 216: DROUTING_OUTFILT_1L (Page 0: 0x0000006C) Bit Mode Symbol Description Reset 6:0 R/W outfilt_1l_src Data input selection control for the OUTFILT_1L output stream 0x1 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Table 217: DMIX_OUTFILT_1L_INFILT_1L_GAIN (Page 0: 0x0000006D) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_infilt_1l_gai n Gain control for the INFILT_1L to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 140 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 218: DMIX_OUTFILT_1L_INFILT_1R_GAIN (Page 0: 0x0000006E) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_infilt_1r_gai n Gain control for the INFILT_1R to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 219: DMIX_OUTFILT_1L_INFILT_2L_GAIN (Page 0: 0x0000006F) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_infilt_2l_gai n Gain control for the INFILT_2L to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 220: DMIX_OUTFILT_1L_INFILT_2R_GAIN (Page 0: 0x00000070) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_infilt_2r_gai n Gain control for the INFILT_2R to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 141 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 221: DMIX_OUTFILT_1L_TONEGEN_GAIN (Page 0: 0x00000071) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_tonegen_g ain Gain control for the TONEGEN to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 222: DMIX_OUTFILT_1L_INDAI_1L_GAIN (Page 0: 0x00000072) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_indai_1l_ga in Gain control for the INDAI_1L to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 223: DMIX_OUTFILT_1L_INDAI_1R_GAIN (Page 0: 0x00000073) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1l_indai_1r_g ain Gain control for the INDAI_1R to OUTFILT_1L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 142 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 224: DROUTING_OUTFILT_1R (Page 0: 0x00000074) Bit Mode Symbol Description Reset 6:0 R/W outfilt_1r_src Data input selection control for the OUTFILT_1R output stream 0x4 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Table 225: DMIX_OUTFILT_1R_INFILT_1L_GAIN (Page 0: 0x00000075) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_infilt_1l_gai n Gain control for the INFILT_1L to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 226: DMIX_OUTFILT_1R_INFILT_1R_GAIN (Page 0: 0x00000076) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_infilt_1r_ga in Gain control for the INFILT_1R to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 143 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 227: DMIX_OUTFILT_1R_INFILT_2L_GAIN (Page 0: 0x00000077) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_infilt_2l_gai n Gain control for the INFILT_2L to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 228: DMIX_OUTFILT_1R_INFILT_2R_GAIN (Page 0: 0x00000078) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_infilt_2r_ga in Gain control for the INFILT_2R to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 229: DMIX_OUTFILT_1R_TONEGEN_GAIN (Page 0: 0x00000079) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_tonegen_g ain Gain control for the TONEGEN to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 144 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 230: DMIX_OUTFILT_1R_INDAI_1L_GAIN (Page 0: 0x0000007A) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_indai_1l_g ain Gain control for the INDAI_1L to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 231: DMIX_OUTFILT_1R_INDAI_1R_GAIN (Page 0: 0x0000007B) Bit Mode Symbol Description Reset 4:0 R/W outfilt_1r_indai_1r_g ain Gain control for the INDAI_1R to OUTFILT_1R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 232: DROUTING_OUTDAI_2L (Page 0: 0x0000007C) Bit Mode Symbol Description Reset 6:0 R/W outdai_2l_src Data input selection control for the OUTDAI_2L output stream 0x4 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Datasheet Revision 2.3 145 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 233: DMIX_OUTDAI_2L_INFILT_1L_GAIN (Page 0: 0x0000007D) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_infilt_1l_ga in Gain control for the INFILT_1L to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 234: DMIX_OUTDAI_2L_INFILT_1R_GAIN (Page 0: 0x0000007E) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_infilt_1r_g ain Gain control for the INFILT_1R to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 235: DMIX_OUTDAI_2L_INFILT_2L_GAIN (Page 0: 0x0000007F) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_infilt_2l_ga in Gain control for the INFILT_2L to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 146 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 236: DMIX_OUTDAI_2L_INFILT_2R_GAIN (Page 0: 0x00000080) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_infilt_2r_g ain Gain control for the INFILT_2R to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 237: DMIX_OUTDAI_2L_TONEGEN_GAIN (Page 0: 0x00000081) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_tonegen_g ain Gain control for the TONEGEN to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 238: DMIX_OUTDAI_2L_INDAI_1L_GAIN (Page 0: 0x00000082) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_indai_1l_g ain Gain control for the INDAI_1L to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 147 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 239: DMIX_OUTDAI_2L_INDAI_1R_GAIN (Page 0: 0x00000083) Bit Mode Symbol Description Reset 4:0 R/W outdai_2l_indai_1r_g ain Gain control for the INDAI_1R to OUTDAI_2L mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 240: DROUTING_OUTDAI_2R (Page 0: 0x00000084) Bit Mode Symbol Description Reset 6:0 R/W outdai_2r_src Data input selection control for the OUTDAI_2R output stream 0x8 bit 0 = Input filter 1 left bit 1 = Input filter 1 right bit 2 = Input filter 2 left bit 3 = Input filter 2 right bit 4 = Tone generator bit 5 = DAI 1 input left data bit 6 = DAI 1 input right data bit 7 = reserved For each bit position: 0 = Input not selected 1 = Input selected Table 241: DMIX_OUTDAI_2R_INFILT_1L_GAIN (Page 0: 0x00000085) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_infilt_1l_g ain Gain control for the INFILT_1L to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 148 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 242: DMIX_OUTDAI_2R_INFILT_1R_GAIN (Page 0: 0x00000086) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_infilt_1r_g ain Gain control for the INFILT_1R to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 243: DMIX_OUTDAI_2R_INFILT_2L_GAIN (Page 0: 0x00000087) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_infilt_2l_g ain Gain control for the INFILT_2L to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 244: DMIX_OUTDAI_2R_INFILT_2R_GAIN (Page 0: 0x00000088) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_infilt_2r_g ain Gain control for the INFILT_2R to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 149 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 245: DMIX_OUTDAI_2R_TONEGEN_GAIN (Page 0: 0x00000089) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_tonegen_g ain Gain control for the TONEGEN to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 246: DMIX_OUTDAI_2R_INDAI_1L_GAIN (Page 0: 0x0000008A) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_indai_1l_g ain Gain control for the INDAI_1L to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 247: DMIX_OUTDAI_2R_INDAI_1R_GAIN (Page 0: 0x0000008B) Bit Mode Symbol Description Reset 4:0 R/W outdai_2r_indai_1r_g ain Gain control for the INDAI_1R to OUTDAI_2R mixer path 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Datasheet Revision 2.3 150 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 248: Register map sidetone_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000E4 sidetone_filte sidetone_mut SIDETONE_C r_en TRL Reserved e_en 0x000000E5 SIDETONE_IN _SELECT Reserved 0x000000E6 SIDETONE_G sidetone_in_select Reserved sidetone_gain AIN 0x000000E8 DROUTING_S T_OUTFILT_1 Reserved outfilt_st_1l_src Reserved outfilt_st_1r_src L 0x000000E9 DROUTING_S T_OUTFILT_1 R 0x000000EA SIDETONE_BI sidetone_biq_3stage_data Q_3STAGE_D ATA 0x000000EB SIDETONE_BI Q_3STAGE_A Reserved sidetone_biq_3stage_addr DDR Table 249: SIDETONE_CTRL (Page 0: 0x000000E4) Bit Mode Symbol Description Reset 7 R/W sidetone_filter_en SideTone path control 0x0 0 = Sidetone path disabled 1 = Sidetone path enabled 6 R/W sidetone_mute_en SideTone mute control 0x1 0 = Sidetone not muted 1 = Sidetone muted Datasheet Revision 2.3 151 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 250: SIDETONE_IN_SELECT (Page 0: 0x000000E5) Bit Mode Symbol Description Reset 1:0 R/W sidetone_in_select Input selection 0 = ADC 1L 1 = ADC 1R 2 = ADC 2L 3 = ADC 2R 0x0 Table 251: SIDETONE_GAIN (Page 0: 0x000000E6) Bit Mode Symbol Description Reset 4:0 R/W sidetone_gain Sidetone gain control 0x1C 00000 = -42 dB 00001 = -40.5 dB 00010 = -39.0 dB continuing in 1.5 dB steps through... 11100 = 0 dB to… 11101 = 1.5 dB 11110 = 3.0 dB 11111 = 4.5 dB Table 252: DROUTING_ST_OUTFILT_1L (Page 0: 0x000000E8) Bit Mode Symbol Description Reset 2:0 R/W outfilt_st_1l_src Data selection control for the OUTFILT_1L output stream: 0x1 bit 0 = Output filter 1l bit 1 = Output filter 1r (out_1l_filter_en must equal 1 to enable this channel) bit 2 = SideTone For each bit: 0 = Data source not selected 1 = Data source selected Datasheet Revision 2.3 152 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 253: DROUTING_ST_OUTFILT_1R (Page 0: 0x000000E9) Bit Mode Symbol Description Reset 2:0 R/W outfilt_st_1r_src Data selection control for the OUTFILT_1R output stream 0x2 bit 0 = Output filter 1l (out_1r_filter_en must equal 1 to enable this channel) bit 1 = Output filter 1r bit 2 = SideTone For each bit: 0 = Data source not selected 1 = Data source selected Table 254: SIDETONE_BIQ_3STAGE_DATA (Page 0: 0x000000EA) Bit Mode Symbol Description Reset 7:0 R/W sidetone_biq_3stage _data Data to be written to the coefficient registers of the 3-stage BiQuad filter 0x0 Table 252: SIDETONE_BIQ_3STAGE_ADDR (Page 0: 0x000000EB) Bit Mode Symbol Description Reset 4:0 R/W sidetone_biq_3stage _addr Address of the 3-stage biquad coefficient register Even numbered addresses in this register field write the lower byte of the 16-bit cooefficient, and odd numbered addresses write the upper byte of the 16bit cooefficient A write to the biq_addr register triggers a write of the data 0x0 Table 256: Register map system_controller_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x00000014 SYSTEM_MO adc_mode mode_submit dac_mode mode_submit DES_INPUT 0x00000015 SYSTEM_MO DES_OUTPU T 0x00000016 SYSTEM_STA TUS Datasheet Reserved Revision 2.3 153 of 171 sc2_busy sc1_busy 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 257: SYSTEM_MODES_INPUT (Page 0: 0x00000014) Bit Mode Symbol Description Reset 7:1 R/W adc_mode Preconfigured system modes control (input side) 0x0 Bit 1 = reserved Bit 2 = MIC_1 Bit 3 = MIC_2 Bit 4 = ADC_1L Bit 5 = ADC_1R Bit 6 = ADC_2L Bit 7 = ADC_2R For each bit: 0 = Disabled 1 = Enabled 0 R/W mode_submit Writing to this register bit causes the System Controller (SCL) to process and activate both the input and the output paths 0x0 Table 258: SYSTEM_MODES_OUTPUT (Page 0: 0x00000015) Bit Mode Symbol Description Reset 7:1 R/W dac_mode Preconfigured system modes control (output side) 0x0 [1] = reserved [2] = reserved [3] = reserved [4] = HP_L [5] = HP_R [6] = reserved [7] = reserved 0 - mode_submit Writing to this register bit causes the System Controller (SCL) to process and activate both the input and the output paths 0x0 Table 259: SYSTEM_STATUS (Page 0: 0x00000016) Bit Mode Symbol Description Reset 1 R sc2_busy Indicates the current status of the System Controller 2 0x0 0 = Complete 1 = Busy 0 R sc1_busy Indicates the current status of the System Controller 1 0x0 0 = Complete 1 = Busy Datasheet Revision 2.3 154 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 260: Register map tone_gen_cor_00 page 0 Address # 7 6 5 4 3 2 1 0 Name Register Page 0 0x000000A0 TONE_GEN_ start_stopn Reserved dtmf_en dtmf_reg CFG1 0x000000A1 TONE_GEN_ CFG2 Reserved 0x000000A2 TONE_GEN_F swg_sel freq1_l REQ1_L 0x000000A3 TONE_GEN_F freq1_u REQ1_U 0x000000A4 TONE_GEN_F REQ2_L freq2_l 0x000000A5 TONE_GEN_F freq2_u REQ2_U 0x000000A6 TONE_GEN_ Reserved beep_cycles CYCLES 0x000000A7 TONE_GEN_ ON_PER 0x000000A8 TONE_GEN_ Reserved beep_on_per Reserved beep_off_per OFF_PER Datasheet Revision 2.3 155 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 261: TONE_GEN_CFG1 (Page 0: 0x000000A0) Bit Mode Symbol Description Reset 7 R/W start_stopn Start and stop control for the tone generator. 0x0 1 = Start the tone generator. After the tonegenerator has finished, it will reset the register to 0. 0 = Stop the tone generator. The tone generator will stop after completion of the current beep cycle. In Continuous mode, setting this register to 0 causes the tone generator to stop after the next zero-cross. Note that this register is cleared automatically once the pre-programmed number of beep cycles has completed. 4 R/W dtmf_en DTMF control 0x0 0 = Use values in the freq1 & freq2 registers to generate sine wave(s) 1 = Use values from dtmf_reg to generate sinewaves 3:0 R/W dtmf_reg The DTMF keypad values 0 to 15 (0xE='*', 0xF='#') 0x0 Table 262: TONE_GEN_CFG2 (Page 0: 0x000000A1) Bit Mode Symbol Description Reset 1:0 R/W swg_sel Sine wave selection control 0x0 00 = Sum of both Sine Wave Generator (SWG) values is mixed into the audio. 01 = Only the first SWG value is output 10 = Only the second SWG value is output 11 = 1-Cos(SWG1) or S_ramp function for headphone detection Table 263: TONE_GEN_FREQ1_L (Page 0: 0x000000A2) Bit Mode Symbol Description Reset 7:0 R/W freq1_l Output frequency for first Sine Wave Generator (SWG) lower byte 0x55 FREQ1=(2^16*(f/12000))-1 for SR=8/12/16/24/32/48/96 kHz FREQ1=(2^16*(f/11025))-1 for SR=11.025/22.05/44.4/88.2 kHz Datasheet Revision 2.3 156 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 264: TONE_GEN_FREQ1_U (Page 0: 0x000000A3) Bit Mode Symbol Description Reset 7:0 R/W freq1_u Output frequency for first Sine Wave Generator (SWG) upper byte 0x15 FREQ1=(2^16*(f/12000))-1 for SR=8/12/16/24/32/48/96 kHz FREQ1=(2^16*(f/11025))-1 for SR=11.025/22.05/44.4/88.2 kHz Table 265: TONE_GEN_FREQ2_L (Page 0: 0x000000A4) Bit Mode Symbol Description Reset 7:0 R/W freq2_l Output frequency for second Sine Wave Generator (SWG) lower byte 0x0 FREQ1=(2^16*(f/12000))-1 for SR=8/12/16/24/32/48/96 kHz FREQ1=(2^16*(f/11025))-1 for SR=11.025/22.05/44.4/88.2 kHz Table 266: TONE_GEN_FREQ2_U (Page 0: 0x000000A5) Bit Mode Symbol Description Reset 7:0 R/W freq2_u Output frequency for second Sine Wave Generator (SWG) upper byte 0x40 FREQ1=(2^16*(f/12000))-1 for SR=8/12/16/24/32/48/96 kHz FREQ1=(2^16*(f/11025))-1 for SR=11.025/22.05/44.4/88.2 kHz Table 267: TONE_GEN_CYCLES (Page 0: 0x000000A6) Bit Mode Symbol Description Reset 2:0 R/W beep_cycles Control of the number of beep cycles required 0x0 000 = 1 cycle 001 = 2 cycles 010 = 3 cycles 011 = 4 cycles 100 = 8 cycles 101 = 16 cycles 110 = 32 cycles 111 = Infinite (until start_stopn is set to 0) Datasheet Revision 2.3 157 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Table 268: TONE_GEN_ON_PER (Page 0: 0x000000A7) Bit Mode Symbol Description Reset 5:0 R/W beep_on_per Beep cycle on-period control 0x2 00 0001 (0x1) = 10 ms 00 0010 (0x2)= 20 ms 00 0011 (0x3)= 30 ms continuing in 10 ms steps to... 01 0100 (0x14) = 200 ms then… 01 0101 (0x15) to 01 1000 (0x18) = reserved then... 01 1001 (0x19) = 250 ms 01 1010 (0x1A) = 300 ms and continuing in 50 ms steps to... 11 1100 (0x3C) = 2000 ms 11 1101 (0x3D) = reserved 11 1110 (0x3E) = reserved 11 1111 (0x3F) = continuous Table 269: TONE_GEN_OFF_PER (Page 0: 0x000000A8) Bit Mode Symbol Description Reset 5:0 R/W beep_off_per Beep cycle off-period control 0x1 00 0001 (0x1) = 10 ms 00 0010 (0x2)= 20 ms 00 0011 (0x3)= 30 ms continuing in 10 ms steps to... 01 0100 (0x14) = 200 ms then 01 0101 (0x15) to 01 1000 (0x18) = reserved then... 01 1001 (0x19) = 250 ms 01 1010 (0x1A) = 300 ms and continuing in 50 ms steps to... 11 1100 (0x3C) = 2000 ms 11 1101 (0x3D) = reserved 11 1110 (0x3E) = reserved 11 1111 (0x3F) = continuous Datasheet Revision 2.3 158 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential 10 Package information Figure 36: DA7218 package outline drawing Datasheet Revision 2.3 159 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential 11 External components Figure 37: DA7218 external component requirements 12 Ordering information The ordering number consists of the part number followed by a suffix indicating the packing method. For details and availability, please consult Dialog Semiconductor’s customer portal or your local sales representative. Table 267: Ordering information Part number Package Shipment form DA7218-00U32 34-bump WL-CSP Pb free/green Tape and Reel DA7218-00U36 34-bump WL-CSP Pb free/green Tray/Waffle Pack (engineering samples only - not for mass production) Datasheet Pack quantity 5000 (13 inch reel) Revision 2.3 160 of 171 77 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Appendix A Applications information A.1 Codec initialisation Depending on the specific application, some general settings need to be set. Examples of these settings include the sample rate, the PLL, and the DAI. Then the amplifiers, the mixers and channels of the ADC/DAC have to be configured and enabled via their respective control registers. An example sequence is shown below: 1. 2. 3. 4. 5. Configure clock mode as required for operation, (for example PLL or PLL bypass). Configure the digital audio interface. Configure the charge pump if the headphone path is in use. Set input and output mixer paths and gains. Enable input and output paths using the Level 2 System Controller (SLC2). A.2 Automatic level control calibration When using the automatic level control (ALC or AGS) in sync-mode the DC offset between the digital and analog PGAs must be cancelled. This is performed automatically if the following procedure is performed: 1. 2. 3. 4. 5. Enable microphone amplifiers unmuted. Mute microphones. Enable input mixer and ADC unmuted. Enable AIF interface. Set calib_auto_en in CALIB_CTRL to ‘1’ (CALIB_CTRL = 0x44). This bit will auto-clear when calibration is complete. 6. When calibration is complete, enable the ALC with alc_sync_mode (ALC_CTRL1 = 0x30) and calib_offset_en (CALIB_CTRL = 0x44). 7. Unmute microphones. Datasheet Revision 2.3 161 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Appendix B Components The following recommended components are examples selected from requirements of a typical application. The electrical characteristics (that is, the supported voltage/current ranges) have to be cross-checked and component types may need to be adapted for the individual needs of the target circuitry. B.1 Audio inputs Table 268: Audio inputs Pin name Bump/pin Power domain Description MIC1_P/DMIC1CLK A15 VDD Differential mic. input 1 (positive) / Single-ended mic. input 1 (left) Or Digital microphone 1 clock Analog input or digital output VDD Differential mic. input 1 (negative) / Single-ended mic. input 2 (left) Or Digital microphone 1 data Analog input or digital input VDD Differential mic. input 2 (positive) / Single-ended mic. input 1 (right) Or Digital microphone 2 clock Analog input or digital output VDD Differential mic. input 2 (negative) / Single-ended mic. input 2 (right) Or Digital microphone 2 data Analog input or digital input MIC1_N/DMIC1N MIC2_P/DMIC2CLK MIC2_N/DMIC2IN B14 D16 C15 Type The DA7218 microphone inputs can be configured to accommodate single-ended or differential analog microphones, line inputs or digital microphones. When using the inputs in an analog configuration, a DC blocking capacitor is required for each used input. The choice of capacitor is determined by the filter that is formed between that capacitor and the input impedance of the input pin which can be found in Table 6, the Microphone amplifier electrical characteristics section of the datasheet. 1 2 . . Where Fc is the 3 dB cut off frequency of the low pass filter (typically 20 Hz for audio applications). A 1 µF capacitor is suitable for most applications. Due to their high stability tantalum capacitors are particularly suitable for this application. Ceramic equivalents with an X5R dielectric are recommended as a cost effective alternative. Care should be taken to ensure that the desired capacitance is maintained over operating temperature and voltage. Z5U dielectric ceramics should be avoided due to their susceptibility to microphonic effects. Unused inputs can be left floating or connected via a capacitor to ground. When the inputs are configured for digital microphones, these pins can be routed directly to a digital microphones clock and data lines. In stereo mode they can be connected to two digital microphones for each data/clock pair to allow up to four digital microphones to be connected to the device. Each data lane is configured to receive data on the rising clock edge for one channel, and on the falling edge for the other channel. The clock output operates at 1.5 MHz or 3 MHz. The appropriate layout considerations for clock signals should be followed. Datasheet Revision 2.3 162 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.2 Company confidential Microphone bias Table 269: Microphone bias Pin name Bump/pin Power domain Description Type MICBIAS1 B12 VDD_MIC Microphone bias output 1 Analog output MICBIAS2 B16 VDD_MIC Microphone bias output 2 Analog output A 1 µF capacitor to GND should be used to decouple the MICBIAS output. Figure 38 MICBIAS decoupling B.3 Audio outputs Table 270: DA7218 headphone outputs Pin name Bump/pin Power domain Description Type HPL A5 VDD Headphone output (left) Analog output HPR A3 VDD Headphone output (right) Analog output GND_SENSE B4 VDD Ground reference for headphone output Analog input HPLDET B6 VDD Headphone left jack detect Analog input DA7218 contains a capless true-ground Class-G headphone amplifier with a ground sense connection. For optimum noise immunity the headphone ground sense should be tracked between the HP_L and HP_R signals before being grounded at the headphone connector. In this configuration the ground sense connector cancels common mode noise on the headphone from the PCB. Figure 39 DA7218 recommended headphone layout Datasheet Revision 2.3 163 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.4 Company confidential Headphone charge pump Table 271: Headphone charge pump Pin name Bump/pin Power domain Description Type HPCSP A1 VDD Charge pump reservoir capacitor (pos) Charge pump HPCSN D2 VDD Charge pump reservoir capacitor (neg) Charge pump HPCFP C1 VDD Charge pump flying capacitor (pos) Charge pump HPCFN C3 VDD Charge pump flying capacitor (neg) Charge pump A 1 µF reservoir capacitor is required between the HPCSP and GND and between HPCSN and GND when the charge pump is used. For best performance the capacitors should be fitted as near to the device as possible. Figure 40 Charge pump decoupling A 1 µF flying capacitor is required between HPCFP and HPCFN. For best performance the capacitor should be fitted as near to the device as possible. HPCFP MICBIAS M11 C1 HPCFN C3 1µF Figure 41 Charge pump flying capacitor To ensure stable charge pump operation the effective series resistance of the flying capacitor should be kept to a minimum. This can be achieved by selecting an appropriate capacitor dielectric (X5R, X7R) and ensuring that the capacitor is placed as near to the device as possible. Ideally the connection between the pins and the capacitor should not run through any vias. Connect on top layer of PCB only. B.4.1 Single supply mode When using the device in Single supply mode the charge pump is not used. HPCSP becomes the positive supply for the headphone amplifier (usually tied to VDD) and the HPCSN ball becomes the negative supply for the headphone amplifier (tied to GND). A 1 µF reservoir capacitor is required between the HPCSP and GND. In Single supply mode the HPCFP and HPCFN pins should be left floating. Figure 42 Single supply mode operation Datasheet Revision 2.3 164 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.5 Company confidential Digital interfaces 2 Table 272: Digital interfaces – I C Pin name Bump/pin Power domain Description Type 2 Digital input / output 2 Digital input SDA D12 VDD_IO I C bidirectional data SCL C11 VDD_IO I C clock input 2 2 The I C data and clock lines are powered from VDD_IO. Both I C line require a pull up to VDD_IO. 2 The value of this pull up is dependent on I C bus speed, bus length and supply voltage. A 2.2 kΩ resistor is satisfactory in most applications. 2 Figure 43 I C pull ups 2 Table 273: Digital interfaces - I S Pin name Bump/pin Power domain Description Type DATIN C7 VDD_IO DAI data input Digital output DATOUT C9 VDD_IO DAI data output Digital input BCLK D6 VDD_IO DAI bit clock Digital input / output WCLK D8 VDD_IO DAI word clock (L/R select) Digital input / output MCLK D10 VDD_IO Master clock Digital input The DAI interface pins should be treated as clock signals and the appropriate layout rules for routing clocks should be adhered to. Datasheet Revision 2.3 165 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.6 Company confidential References Table 274: References Pin name Bump/pin Power domain Description Type VDDDIG D4 VDD Digital supply reference capacitor Reference VMID A9 VDD Audio mid-rail reference capacitor Reference VREF A11 VDD Bandgap reference capacitor Reference DACREF A7 VDD Audio DAC reference capacitor Reference A 1 µF capacitor should be connected between each of the references and GND. For best performance the capacitors should be fitted as near to the device as possible. Figure 44 Reference capacitors Datasheet Revision 2.3 166 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.7 Company confidential Supplies Table 275: Power supplies Pin name Bump/pin Power domain Description Type VDD B8 Min: 1.7 V Max: 2.65 V Supply for analog circuits / Supply for headphone charge pump Power supply VDD_IO C5 Min: 1.5 V Max: 3.6 V Supply for digital interfaces Power supply VDD_MIC A13 Min: 1.8 V Max: 3.6 V Supply for microphone bias circuits Power supply Decoupling capacitors are recommended between all supplies and GND. These capacitors should be located as near to the device as possible. Figure 45 Power supply decoupling B.8 Ground Table 276: Ground Pin name Bump/pin Power domain Description Type GND B10 Analog ground Power ground GND_CP B2 Charge pump/digital ground Power ground GND and GND_CP should be connected directly to the system ground. Datasheet Revision 2.3 167 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec B.9 Company confidential Capacitor selection Ceramic capacitors are manufactured with a variety of dielectrics, each with a different behaviour over temperature and applied voltage. Capacitors must have a dielectric adequate to ensure the minimum capacitance over the necessary temperature range, dc bias conditions and low Equivalent Series Resistance (ESR). X5R or X7R dielectrics with a voltage rating of 6.3 V or 10 V are recommended for best performance. Y5V and Z5U dielectrics are not recommended for use because of their poor temperature and dc bias characteristics. The worst-case capacitance accounting for capacitor variation over temperature, component tolerance, and voltage is calculated using the following equation: 1− 1− Where: CEFF is the effective capacitance at the operating voltage. TEMPCO is the worst-case capacitor temperature coefficient. TOL is the worst-case component tolerance. These figures can be found in the manufacturer’s datasheet. In the example below, the worst-case temperature coefficient (TEMPCO) over −55 °C to +85 °C is assumed to be 15 %. The tolerance of the capacitor (TOL) is assumed to be 10 %, and COUT is 0.65 µF at 1.8 V. Substituting these values in the equation yields 0.65 1 − 0.15 1 − 0.1 0.497 Below is a table with recommended capacitor types: Application Value Size Temp. char. Tolerance Rated voltage Type VDD,VDD_IO, VDD_MIC, VDDDIG, DACREF, VMID,VREF, HPCFP/HPCFN, HPCSP, HPCSN, MICBIAS1, MICBIAS2 12x 1 µF 0201 X5R +/15 % +/-10 % 6.3 V Murata GRM033R60J105M Datasheet Revision 2.3 168 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Appendix C PCB layout guidelines DA7218 uses Dialog Semiconductor’s ‘Route Easy™’ technology allowing the device to be routed using conventional, low cost, PCB technology. All device balls are routable on the top level and conventional plated through hole vias can be used throughout. This design is fully realisable using a 2-layer PCB however for optimum performance it is recommended that a 4-layer PCB is used with layers 2 and 3 as solid ground planes. Decoupling and reference capacitors should be located as close to the device as possible and appropriately sized tracks should be used for all power connections. Figure 46 DA7218 example layout C.1 Layout and schematic support Copies of the evaluation board schematics and layout are available on request to aid in PCB development. Dialog Semiconductor also offer a schematic and layout review service for all designs utilising Dialog’s devices. Please contact your local Dialog Semiconductor office. Datasheet Revision 2.3 169 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec C.2 Company confidential General recommendations ● Appropriate trace width and number of vias should be used for all power supply paths ● A common ground plane should be used, which allows proper electrical and thermal performance ● Noise-sensitive analog signals such as feedback lines or clock connections should be kept away from traces carrying pulsed analog or digital signals. This can be achieved by separation (distance) or by shielding with quiet signals or ground traces ● Decoupling capacitors should be X5R ceramics and should be placed as near to the device as possible ● Charge pump capacitors should be X5R ceramics and should be placed as near to the device as possible Revision history Revision Date Description 1.0 December 2014 Initial version. 2.0 March 2015 Pre-production specs added. Ball layout and pin descriptions modified. Details on block descriptions modified and clarified. A few registers (names and descriptions) modified. 2.1 June 2015 Clarifications and details added to block descriptions and register descriptions 2.2 December 2015 Updated to new template Restructure of document sections Correction of typos Registers corrected 2.3 March 2016 Added power consumption figures for 32Ω load Correction of typos Datasheet Revision 2.3 170 of 171 15-April-2016 © 2016 Dialog Semiconductor DA7218 Ultra-low power stereo codec Company confidential Status definitions Revision Datasheet status Product status Definition 1. Target Development This datasheet contains the design specifications for product development. Specifications may be changed in any manner without notice. 2. Preliminary Qualification This datasheet contains the specifications and preliminary characterisation data for products in pre-production. Specifications may be changed at any time without notice in order to improve the design. 3. Final Production This datasheet contains the final specifications for products in volume production. The specifications may be changed at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via Customer Product Notifications. 4. Obsolete Archived This datasheet contains the specifications for discontinued products. The information is provided for reference only. Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor. 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Phone: +1 408 845 8500 Singapore Dialog Semiconductor Singapore Phone: +65 64 8499 29 China (Shenzhen) Dialog Semiconductor China Phone: +86 755 2981 3669 Germany Dialog Semiconductor GmbH Phone: +49 7021 805-0 Japan Dialog Semiconductor K. K. Phone: +81 3 5425 4567 Hong Kong Dialog Semiconductor Hong Kong Phone: +852 3769 5200 China (Shanghai) Dialog Semiconductor China Phone: +86 21 5424 9058 The Netherlands Dialog Semiconductor B.V. Phone: +31 73 640 8822 Taiwan Dialog Semiconductor Taiwan Phone: +886 281 786 222 Korea Dialog Semiconductor Korea Phone: +82 2 3469 8200 Email: enquiry@diasemi.com Web site: www.dialog-semiconductor.com Datasheet Revision 2.3 171 of 171 15-April-2016 © 2016 Dialog Semiconductor