CDB5368

CS5368 114 dB, 192 kHz, 8-Channel A/D Converter Features Advanced Multi-bit Delta-Sigma Architecture 24-Bit Conversion 114 dB Dynamic Range -105 dB THD+N Supports Audio Sample Rates up to 216 kHz Selectable Audio Interface Formats – Left-Justified, I²S, TDM – 8-Channel TDM Interface Formats Low Latency Digital Filter Less than 680 mW Power Consumption On-Chip Oscillator Driver Operation as System Clock Master or Slave Auto-Detect Speed in Slave Mode Differential Analog Architecture Separate 1.8 V to 5 V Logic Supplies for Control and Serial Ports High-Pass Filter for DC Offset Calibration Overflow Detection Footprint Compatible with the 4-Channel CS5364 and 6-Channel CS5366 Additional Control Port Features Supports Standard I²C® or SPI™ Control Interface Individual Channel HPF Disable Overflow Detection for Individual Channels Mute Control for Individual Channels Independent Power-Down Control per Channel Pair VA 5V VD 3.3 - 5V VLC 1.8 - 5V Configuration Registers Control Interface I2C, SPI or Pins Level Translator Voltage Reference Internal Oscillator Device Control 8 Differential Analog Inputs Multi-bit ΔΣ ADC Decimation Filter High Pass Filter Serial Audio Out PCM or TDM Level Translator Digital Audio VLS 1.8 - 5V http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2007 (All Rights Reserved) JULY '07 DS624F2 CS5368 Description The CS5368 is a complete 8-channel analog-to-digital converter for digital audio systems. It performs sampling, analog-to-digital conversion, and anti-alias filtering, generating 24-bit values for all 8-channel inputs in serial form at sample rates up to 216 kHz per channel. The CS5368 uses a 5th-order, multi-bit delta sigma modulator followed by low latency digital filtering and decimation, which removes the need for an external anti-aliasing filter. The ADC uses a differential input architecture which provides excellent noise rejection. Dedicated level translators for the Serial Port and Control Port allow seamless interfacing between the CS5368 and other devices operating over a wide range of logic levels. In addition, an on-chip oscillator driver provides clocking flexibility and simplifies design. The CS5368 is the industry’s first audio A/D to support a high-speed TDM interface which provides a serial output of 8 channels of audio data with sample rates up to 216 kHz within a single data stream. It further reduces layout complexity and relieves input/output constraints in digital signal processors. The CS5368 is available in 48-pin LQFP package in both Commercial (-40° to 85°C) and Automotive grades (-40° to +105°C). The CDB5368 Customer Demonstration board is also available for device evaluation and implementation suggestions. Please see “Ordering Information” on page 41 for complete ordering information. The CS5368 is ideal for high-end and pro-audio systems requiring unrivaled sound quality, transparent conversion, wide dynamic range and negligible distortion, such as A/V receivers, digital mixing consoles, multi-channel recorders, outboard converters, digital effect processors, and automotive audio systems. 2 DS624F2 CS5368 TABLE OF CONTENTS 1. PIN DESCRIPTION ................................................................................................................................. 6 2. TYPICAL CONNECTION DIAGRAM ................................................................................................... 9 3. CHARACTERISTICS AND SPECIFICATIONS .................................................................................... 10 RECOMMENDED OPERATING CONDITIONS ................................................................................. 10 ABSOLUTE RATINGS ....................................................................................................................... 10 SYSTEM CLOCKING ......................................................................................................................... 10 DC POWER ........................................................................................................................................ 11 LOGIC LEVELS ................................................................................................................................. 11 PSRR, VQ AND FILT+ CHARACTERISTICS .................................................................................... 11 ANALOG CHARACTERISTICS (COMMERCIAL) .............................................................................. 12 ANALOG CHARACTERISTICS (AUTOMOTIVE) ............................................................................... 13 DIGITAL FILTER CHARACTERISTICS ............................................................................................. 14 OVERFLOW TIMEOUT ...................................................................................................................... 14 SERIAL AUDIO INTERFACE - I²S/LJ TIMING ................................................................................... 15 SERIAL AUDIO INTERFACE - TDM TIMING ..................................................................................... 16 SWITCHING SPECIFICATIONS - CONTROL PORT - I²C TIMING ................................................... 17 SWITCHING SPECIFICATIONS - CONTROL PORT - SPI TIMING .................................................. 18 4. APPLICATIONS ................................................................................................................................... 19 4.1 Power ............................................................................................................................................. 19 4.2 Control Port Mode and Stand-Alone Operation .............................................................................. 19 4.2.1 Stand-Alone Mode ................................................................................................................. 19 4.2.2 Control Port Mode ................................................................................................................. 19 4.3 Master Clock Source ...................................................................................................................... 20 4.3.1 On-Chip Crystal Oscillator Driver .......................................................................................... 20 4.3.2 Externally Generated Master Clock ....................................................................................... 20 4.4 Master and Slave Operation ........................................................................................................... 21 4.4.1 Synchronization of Multiple Devices ...................................................................................... 21 4.5 Serial Audio Interface (SAI) Format ................................................................................................ 22 4.5.1 I²S and LJ Format .................................................................................................................. 22 4.5.2 TDM Format .......................................................................................................................... 23 4.5.3 Configuring Serial Audio Interface Format ............................................................................ 23 4.6 Speed Modes ................................................................................................................................. 23 4.6.1 Sample Rate Ranges ............................................................................................................ 23 4.6.2 Using M1 and M0 to Set Sampling Parameters .................................................................... 23 4.6.3 Master Mode Clock Dividers ................................................................................................. 24 4.6.4 Slave Mode Audio Clocking With Auto-Detect ...................................................................... 24 4.7 Master and Slave Clock Frequencies ............................................................................................. 25 4.8 Reset .............................................................................................................................................. 27 4.8.1 Power-Down Mode ................................................................................................................ 27 4.9 Overflow Detection ......................................................................................................................... 27 4.9.1 Overflow in Stand-Alone Mode .............................................................................................. 27 4.9.2 Overflow in Control Port Mode .............................................................................................. 27 4.10 Analog Connections ..................................................................................................................... 28 4.11 Optimizing Performance in TDM Mode ........................................................................................ 29 4.12 DC Offset Control ......................................................................................................................... 29 4.13 Control Port Operation .................................................................................................................. 30 4.13.1 SPI Mode ............................................................................................................................. 30 4.13.2 I²C Mode .............................................................................................................................. 31 5. REGISTER MAP ................................................................................................................................... 32 5.1 Register Quick Reference ............................................................................................................. 32 5.2 00h (REVI) Chip ID Code & Revision Register ............................................................................... 32 DS624F2 3 CS5368 5.3 01h (GCTL) Global Mode Control Register ................................................................................... 32 5.4 02h (OVFL) Overflow Status Register ........................................................................................... 33 5.5 03h (OVFM) Overflow Mask Register ............................................................................................ 33 5.6 04h (HPF) High-Pass Filter Register ............................................................................................. 34 5.7 05h Reserved ................................................................................................................................ 34 5.8 06h (PDN) Power Down Register .................................................................................................. 34 5.9 07h Reserved ................................................................................................................................ 34 5.10 08h (MUTE) Mute Control Register .............................................................................................. 34 5.11 09h Reserved .............................................................................................................................. 35 5.12 0Ah (SDEN) SDOUT Enable Control Register ............................................................................ 35 6. FILTER PLOTS ..................................................................................................................................... 36 7. PARAMETER DEFINITIONS ................................................................................................................ 39 8. PACKAGE DIMENSIONS ................................................................................................................... 40 THERMAL CHARACTERISTICS ....................................................................................................... 40 9. ORDERING INFORMATION ................................................................................................................ 41 10. REVISION HISTORY ......................................................................................................................... 41 LIST OF FIGURES Figure 1. CS5368 Pinout ............................................................................................................................. 6 Figure 2. Typical Connection Diagram ........................................................................................................ 9 Figure 3. I²S/LJ Timing .............................................................................................................................. 15 Figure 4. TDM Timing ............................................................................................................................... 16 Figure 5. I²C Timing .................................................................................................................................. 17 Figure 6. SPI Timing ................................................................................................................................. 18 Figure 7. Crystal Oscillator Topology ........................................................................................................ 20 Figure 8. Master/Slave Clock Flow ........................................................................................................... 21 Figure 9. Master and Slave Clocking for a Multi-Channel Application ...................................................... 21 Figure 10. I²S Format ................................................................................................................................ 22 Figure 11. LJ Format ................................................................................................................................. 22 Figure 12. TDM Format ............................................................................................................................. 23 Figure 13. Master Mode Clock Dividers .................................................................................................... 24 Figure 14. Slave Mode Auto-Detect Speed ............................................................................................... 24 Figure 15. Recommended Analog Input Buffer ......................................................................................... 28 Figure 16. SPI Format ............................................................................................................................... 30 Figure 17. I²C Write Format ...................................................................................................................... 31 Figure 18. I²C Read Format ...................................................................................................................... 31 Figure 19. SSM Passband ........................................................................................................................ 36 Figure 20. DSM Passband ........................................................................................................................ 36 Figure 21. QSM Passband ........................................................................................................................ 36 Figure 22. SSM Stopband ......................................................................................................................... 37 Figure 23. DSM Stopband ......................................................................................................................... 37 Figure 24. QSM Stopband ........................................................................................................................ 37 Figure 25. SSM -1 dB Cutoff ..................................................................................................................... 38 Figure 26. DSM -1 dB Cutoff .................................................................................................................... 38 Figure 27. QSM -1 dB Cutoff ..................................................................................................................... 38 4 DS624F2 CS5368 LIST OF TABLES Table 1. Power Supply Pin Definitions ...................................................................................................... 19 Table 2. DIF1 and DIF0 Pin Settings ........................................................................................................ 23 Table 3. M1 and M0 Settings .................................................................................................................... 23 Table 4. Frequencies for 48 kHz Sample Rate using LJ/I²S ..................................................................... 25 Table 5. Frequencies for 96 kHz Sample Rate using LJ/I²S ..................................................................... 25 Table 6. Frequencies for 192 kHz Sample Rate using LJ/I²S ................................................................... 25 Table 7. Frequencies for 48 kHz Sample Rate using TDM ....................................................................... 25 Table 8. Frequencies for 48 kHz Sample Rate using TDM ....................................................................... 25 Table 9. Frequencies for 96 kHz Sample Rate using TDM ....................................................................... 26 Table 10. Frequencies for 96 kHz Sample Rate using TDM ..................................................................... 26 Table 11. Frequencies for 192 kHz Sample Rate using TDM ................................................................... 26 Table 12. Frequencies for 192 kHz Sample Rate using TDM ................................................................... 26 DS624F2 5 CS5368 1. PIN DESCRIPTION M0/SDA/CDOUT M1/SCL/CCLK DIF0/AD0/CS DIF1/AD1/CDIN AIN1+ AIN5+ AIN6+ AIN1- AIN5- AIN6- MDIV 48 47 46 45 44 43 42 41 40 39 38 37 AIN2+ AIN2GND VA REF_GND FILT+ VQ GND VA GND AIN4+ AIN4- RST 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 GND AIN3+ AIN7+ AIN8+ XTI XTO LRCK/FS AIN3AIN7AIN8MCLK VX 36 35 34 33 OVFL VLC CLKMODE VD GND SDOUT3/TDM SDOUT1/TDM GND VLS SDOUT2 SDOUT4 SCLK CS5368 32 31 30 29 28 27 26 25 Figure 1. CS5368 Pinout 6 DS624F2 CS5368 Pin Name AIN2+, AIN2AIN4+, AIN4AIN3+, AIN3AIN7+, AIN7AIN8+, AIN8AIN6+, AIN6AIN5+, AIN5AIN1+, AIN1GND VA REF_GND FILT+ VQ VX XTI XTO MCLK Pin # 1,2 11,12 13,14 15,16 17,18 43,44 45,46 47,48 3,8 10,19 29,32 4,9 5 6 7 20 21 22 23 Pin Description Differential Analog (Inputs) - Audio signals are presented differently to the delta sigma modulators via the AIN+/- pins. Ground (Input) - Ground reference. Must be connected to analog ground. Analog Power (Input) - Positive power supply for the analog section Reference Ground (Input) - For the internal sampling circuits. Must be connected to analog ground. Positive Voltage Reference (Output) - Reference voltage for internal sampling circuits. Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage. Crystal Oscillator Power (Input) - Also powers control logic to enable or disable oscillator circuits. Crystal Oscillator Connections (Input/Output) - I/O pins for an external crystal which may be used to generate MCLK. System Master Clock (Input/Output) - When a crystal is used, this pin acts as a buffered MCLK Source (Output). When the oscillator function is not used, this pin acts as an input for the system master clock. In this case, the XTI and XTO pins must be tied low. Serial Audio Channel Clock (Input/Output) In I²S Mode, Serial Audio Channel Select. When low, the odd channels are selected. In LJ Mode, Serial Audio Channel Select. When high, the odd channels are selected. In TDM Mode, a frame sync signal. When high, it marks the beginning of a new frame of serial audio samples. In Slave Mode, this pin acts as an input pin. Main timing clock for the Serial Audio Interface (Input/Output) - During Master Mode, this pin acts as an output, and during Slave Mode it acts as an input pin. Serial Audio Data (Output) - Channels 7,8. Serial Audio Data (Output) - Channels 3,4. Serial Audio Interface Power (Input) - Positive power for the serial audio interface. Serial Audio Data (Output) - Channels 1,2. Serial Audio Data (Output) - Channels 5,6. TDM is complementary TDM data. Digital Power (Input) - Positive power supply for the digital section/ Control Port Interface Power(Input) - Positive power for the control port interface. Overflow (Output, open drain) - Detects an overflow condition on both left and right channels. Reset (Input) - The device enters a low power mode when low. CLKMODE (Input) - Setting this pin HIGH places a divide-by-1.5 circuit in the MCLK path to the core device circuitry. DIF1, DIF0 (Input) - Inputs of the audio interface format. Mode Selection (Input) - Determines the operational mode of the device. MCLK Divider (Input) - Setting this pin HIGH places a divide-by-2 circuit in the MCLK path to the core device circuitry. LRCK/FS 24 SCLK SDOUT4 SDOUT2 VLS SDOUT1/TDM SDOUT3/TDM VD VLC OVFL RST 25 26 27 28 30 31 33 35 36 41 Stand-Alone Mode CLKMODE DIF1 DIF0 M1 M0 MDIV 34 37 38 39 40 42 DS624F2 7 CS5368 Control Port Mode CLKMODE AD1/CDIN AD0/CS SCL/CCLK SDA/CDOUT MDIV 34 37 38 39 40 42 CLKMODE (Input) - This pin is ignored in Control Port Mode and the same functionality is obtained from the corresponding bit in the Global Control Register. Note: Should be connected to GND when using the part in Control Port Mode. I²C Format, AD1 (Input) - Forms the device address input AD[1]. SPI Format, CDIN (Input) - Becomes the input data pin. I²C Format, AD0 (Input) - Forms the device address input AD[0]. SPI Format, CS (Input) - Acts as the active low chip select input. I²C Format, SCL (Output) - Acts as the serial clock output from the CS5368. SPI Format, CCLK (Output) - Acts as the serial clock output from the CS5368. I²C Format SDA (Input/Output) - Acts as an input/output data pin. SPI Format CDOUT (Output) - Acts as an output only data pin. MCLK Divider (Input) - This pin is ignored in Control Port Mode and the same functionality is obtained from the corresponding bit in the Global Control Register. Note: Should be connected to GND when using the part in Control Port Mode. 8 DS624F2 CS5368 2. TYPICAL CONNECTION DIAGRAM Resistor may only be used if VD is derived from VA. If used, do not drive any other logic from VD. + 1 μF +5V to 3.3V +5V + 1 μF 0.01 μF 4, 9 5.1 Ω 33 0.01 μF VA 6 VD 220 μ F 1 μF + 0.1 μF 0.1 μF FILT+ REF_GND VQ GND 5 7 VLC 35 +5V to 1.8V 0.01 μF 39 40 36 37 38 41 42 34 + 8 Channel 1 Analog Input Buffer 47 48 1 2 13 14 11 12 45 46 43 44 15 16 17 18 AIN 1+ AIN 1AIN 2+ AIN 2AIN 3+ AIN 3AIN 4+ AIN 4AIN 5+ AIN 5AIN 6+ AIN 6AIN 7+ AIN 7AIN 8+ AIN 8GND MODE1/SCL/CCLK MODE0/SDA/CDOUT OVFL DIF1/AD1/CDIN DIF0/AD0/CS RST MDIV CLKMODE Power Down and Mode Settings Channel 2 Analog Input Buffer Channel 3 Analog Input Buffer CS5368 A/D CONVERTER VLS 28 +5V to 1.8V 0.01 μF 30 27 31 26 24 25 23 Channel 4 Analog Input Buffer SDOUT1/ TDM SDOUT2 SDOUT3/ TDM SDOUT4 LRCK/FS SCLK MCLK Audio Data Processor Channel 5 Analog Input Buffer Timing Logic and Clock Channel 6 Analog Input Buffer Channel 7 Analog Input Buffer VX XTI XTO 20 +5V 21 22 Channel 8 Analog Input Buffer 3, 8, 10, 19, 29, 32 Figure 2. Typical Connection Diagram For analog buffer configurations, refer to Cirrus Application Note AN241. Also, a low-cost single-ended-to-differential solution is provided on the Customer Evaluation Board. DS624F2 9 CS5368 3. CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS GND = 0 V, all voltages with respect to 0 V. Parameter DC Power Supplies: Positive Analog Positive Crystal Positive Digital Positive Serial Logic Positive Control Logic (-CQZ) (-DQZ) Symbol VA VX VD VLS VLC TAC TAA Min 4.75 4.75 3.14 1.711 1.71 -40 -40 Typ 5.0 5.0 3.3 3.3 3.3 - Max Unit 5.25 V Ambient Operating Temperature 85 105 °C 1. TDM Quad-Speed Mode specified to operate correctly at VLS ≥ 3.14 V. ABSOLUTE RATINGS Operation beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Transient currents up to ±100 mA on the analog input pins will not cause SCR latch-up. Parameter DC Power Supplies: Positive Analog Positive Crystal Positive Digital Positive Serial Logic Positive Control Logic Symbol VA VX VD VLS VLC Iin VIN VIND TA Tstg Min Typ Max Units -0.3 - +6.0 V Input Current Analog Input Voltage Digital Input Voltage Ambient Operating Temperature (Power Applied) Storage Temperature -10 -0.3 -50 -65 - +10 VA+0.3 VL+0.3 +95 +150 mA V °C SYSTEM CLOCKING Parameter Input Master Clock Frequency Input Master Clock Duty Cycle Symbol MCLK tclkhl Min 0.512 40 Typ Max 55.05 60 Unit MHz % 10 DS624F2 CS5368 DC POWER MCLK = 12.288 MHz; Master Mode; GND = 0 V. Parameter Power Supply Current (Normal Operation) VA = 5 V VX = 5 V VD = 5 V VD = 3.3 V VLS, VLC = 5 V VLS, VLC = 3.3 V VA = VX = 5 V VLS, VLC, VD = 5 V Symbol IA IX ID ID IL IL IA ID+L - Min Typ 100 4 70 42 12 5 50 500 930 675 2.75 Max 112 8 88 50 15 8 1115 792 - Unit - mA Power Supply Current (Power-Down) (Note 1) - μA Power Consumption Normal Operation All Supplies = 5 V VA = VX = 5 V, VD = VLS = VLC = 3.3 V (Power-Down) (Note 1) - mW 1. Power-Down is defined as RST = LOW with all clocks and data lines held static at a valid logic level. LOGIC LEVELS Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage at 100 μA load Low-Level Output Voltage at -100 μA load OVFL Current Sink Input Leakage Current logic pins only Iin -10 %VLS/VLC %VLS/VLC %VLS/VLC %VLS/VLC Symbol VIH VIL VOH VOL Min 70 85 - Typ Max 30 15 Units - % -4 10 mA μA PSRR, VQ AND FILT+ CHARACTERISTICS MCLK = 12.288 MHz; Master Mode. Valid with the recommended capacitor values on FILT+ and VQ as shown in the “Typical Connection Diagram”. Parameter Power Supply Rejection Ratio at (1 kHz) VQ Nominal Voltage Output Impedance Maximum allowable DC current source/sink Filt+ Nominal Voltage Output Impedance Maximum allowable DC current source/sink Symbol PSRR Min - Typ 65 VA/2 25 10 VA 4.4 10 Max - Unit dB V kΩ μA V kΩ μA - - DS624F2 11 CS5368 ANALOG CHARACTERISTICS (COMMERCIAL) Test Conditions (unless otherwise specified). VA = 5 V, VD = VLS = VLC 3.3 V, and TA = 25° C. Full-scale input sine wave. Measurement Bandwidth is 10 Hz to 20 kHz. Parameter Single-Speed Mode Dynamic Range Total Harmonic Distortion + Noise referred to typical full scale Double-Speed Mode Dynamic Range Fs = 96 kHz A-weighted unweighted 40 kHz bandwidth unweighted -1 dB -20 dB -60 dB -1dB THD+N 108 105 114 111 108 -105 -91 -51 -102 114 111 108 -105 -91 -51 -102 110 0.1 -99 -45 dB Fs = 48 kHz A-weighted unweighted -1 dB -20 dB -60 dB THD+N 108 105 114 111 -105 -91 -51 -99 -45 dB dB Symbol Min Typ Max Unit Total Harmonic Distortion + Noise referred to typical full scale 40 kHz bandwidth Quad-Speed Mode Dynamic Range Fs = 192 kHz dB A-weighted unweighted 40 kHz bandwidth unweighted -1 dB -20 dB -60 dB -1dB THD+N 108 105 - -99 -45 5 100 1.19*VA - dB Total Harmonic Distortion + Noise referred to typical full scale 40 kHz bandwidth dB Dynamic Performance for All Modes Interchannel Isolation -5 HPF enabled HPF disabled 0 1.07*VA CMRR dB dB % ppm/°C LSB DC Accuracy Interchannel Gain Mismatch Gain Error Gain Drift Offset Error ± 100 1.13*VA 250 82 Analog Input Characteristics Full-scale Differential Input Voltage Input Impedance (Differential) Common Mode Rejection Ratio Vpp kΩ dB 12 DS624F2 CS5368 ANALOG CHARACTERISTICS (AUTOMOTIVE) Test Conditions (unless otherwise specified). VA = 5.25 to 4.75 V, VD = 5.25 to 3.14 V, VLS = VLC = 5.25 to 1.71 V and TA = -40° to +85° C. Full-scale input sine wave. Measurement Bandwidth is 10 Hz to 20 kHz. Parameter Single-Speed Mode Dynamic Range Total Harmonic Distortion + Noise referred to typical full scale Double-Speed Mode Dynamic Range Fs = 96 kHz A-weighted unweighted 40 kHz bandwidth unweighted -1 dB -20 dB -60 dB -1 dB THD+N 106 103 114 111 108 -105 -91 -51 -102 114 111 108 -105 -91 -51 -102 110 0.1 -97 -45 dB Fs = 48 kHz A-weighted unweighted -1 dB -20 dB -60 dB THD+N 106 103 114 111 -105 -91 -51 -97 -45 dB dB Symbol Min Typ Max Unit Total Harmonic Distortion + Noise referred to typical full scale 40 kHz bandwidth Quad-Speed Mode Dynamic Range Fs = 192 kHz dB A-weighted unweighted 40 kHz bandwidth unweighted -1 dB -20 dB -60 dB -1 dB THD+N 106 103 - -97 -45 7 100 1.24*VA - dB Total Harmonic Distortion + Noise referred to typical full scale 40 kHz bandwidth dB Dynamic Performance for All Modes Interchannel Isolation -7 HPF enabled HPF disabled 0 1.02*VA CMRR dB dB % ppm/°C LSB DC Accuracy Interchannel Gain Mismatch Gain Error Gain Drift Offset Error ± 100 1.13*VA 250 82 Analog Input Characteristics Full-scale Input Voltage Input Impedance (Differential) Common Mode Rejection Ratio Vpp kΩ dB DS624F2 13 CS5368 DIGITAL FILTER CHARACTERISTICS Parameter Single-Speed Mode (2 kHz to 54 kHz sample rates) Passband (Note 1) Passband Ripple Stopband (Note 1) Stopband Attenuation Total Group Delay (Fs = Output Sample Rate) tgd (-0.1 dB) (-0.1 dB) 0 -0.035 0.58 -95 0 -0.035 0.68 -92 tgd (-0.1 dB) 0 -0.035 0.78 -92 tgd -3.0 dB -0.13 dB @ 20 Hz 5/Fs 1 20 10 105/Fs 9/Fs 0.24 0.035 12/Fs 0.45 0.035 0.47 0.035 Fs dB Fs dB s Fs dB Fs dB s Fs dB Fs dB s Symbol Min Typ Max Unit Double-Speed Mode (54 kHz to 108 kHz sample rates) Passband (Note 1) Passband Ripple Stopband (Note 1) Stopband Attenuation Total Group Delay (Fs = Output Sample Rate) Quad-Speed Mode (108 kHz to 216 kHz sample rates) Passband (Note 1) Passband Ripple Stopband (Note 1) Stopband Attenuation Total Group Delay (Fs = Output Sample Rate) High-Pass Filter Characteristics Frequency Response (Note 2) Phase Deviation (Note 2) Passband Ripple Filter Settling Time 0 Hz Deg dB s Notes: 1. The filter frequency response scales precisely with Fs. 2. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs. OVERFLOW TIMEOUT Logic "0" = GND = 0 V; Logic "1" = VLS; CL = 30 pF, timing threshold is 50% of VLS. Parameter OVFL time-out on overrange condition Fs = 44.1 kHz Fs = 192 kHz - Symbol Min Typ (217-1)/Fs 2972 683 Max - Unit ms 14 DS624F2 CS5368 SERIAL AUDIO INTERFACE - I²S/LJ TIMING The serial audio port is a three-pin interface consisting of SCLK, LRCK and SDOUT. Logic "0" = GND = 0 V; Logic "1" = VLS; CL = 20 pF, timing threshold is 50% of VLS. Parameter Sample Rates Single-Speed Mode Double-Speed Mode Quad-Speed Mode Symbol - Min 2 54 108 64*Fs 72.3 40 28 20 20 10 20 10 5 72.3 28 20 20 4 10 10 20 10 5 Typ - Max 54 108 216 64*Fs 60 38 - Unit kHz Master Mode SCLK Frequency SCLK Period SCLK Duty Cycle (Note 1) LRCK setup LRCK hold SDOUT setup SDOUT hold 1/(64*216 kHz) (CLKMODE = 0)(Note 2) (CLKMODE = 1)(Note 2) before SCLK rising after SCLK rising before SCLK rising after SCLK rising (VLS = 1.8 V) after SCLK rising (VLS = 3.3 V) after SCLK rising (VLS = 5 V) tPERIOD tHIGH tHIGH tSETUP1 tHOLD1 tSETUP2 tHOLD2 tHOLD2 tHOLD2 tPERIOD tHIGH tSETUP1 tHOLD1 tSETUP2 tSETUP2 tSETUP2 tHOLD2 tHOLD2 tHOLD2 50 33 Hz ns % % ns - - ns Slave Mode SCLK Frequency (Note 3) SCLK Period SCLK Duty Cycle LRCK setup LRCK hold SDOUT setup 1/(64*216 kHz) before SCLK rising after SCLK rising before SCLK rising (VLS = 1.8 V) before SCLK rising (VLS = 3.3 V) before SCLK rising (VLS = 5 V) after SCLK rising (VLS = 1.8 V) after SCLK rising (VLS = 3.3 V) after SCLK rising (VLS = 5 V) 64*Fs 65 Hz ns % ns SDOUT hold - - ns Notes: 1. Duty cycle of generated SCLK depends on duty cycle of received MCLK as specified under “System Clocking” on page 10. 2. CLKMODE functionality described in Section 4.6.3 "Master Mode Clock Dividers" on page 24. 3. In Slave Mode, the SCLK/LRCK ratio can be set according to preference. However, chip performance is guaranteed only when using the ratios in Section 4.7 Master and Slave Clock Frequencies on page 25. t PERIOD SCLK t HOLD1 LRCK channel tSET UP1 channel t SET UP2 SDOUT data data t HOLD2 t HIGH Figure 3. I²S/LJ Timing DS624F2 15 CS5368 SERIAL AUDIO INTERFACE - TDM TIMING The serial audio port is a three-pin interface consisting of SCLK, LRCK and SDOUT. Logic "0" = GND = 0 V; Logic "1" = VLS; CL = 20 pF, timing threshold is 50% of VLS. Parameter Sample Rates Single-Speed Mode Double-Speed Mode Quad-Speed Mode1 Symbol - Min 2 54 108 256*Fs 18 40 28 20 18 5 128 5 5 18 28 20 20 10 1 5 5 Typ 50 33 256*Fs - Max 54 108 216 256*Fs 60 38 128 65 244 - Unit kHz kHz kHz Hz ns % % ns ns ns ns ns Hz ns % ns ns ns ns ns Master Mode SCLK Frequency SCLK Period SCLK Duty Cycle (Note 2) FS setup FS setup FS setup FS width SDOUT setup SDOUT hold 1/(256*216 kHz) (CLKMODE = 0)(Note 3) (CLKMODE = 1)(Note 3) tPERIOD tHIGH1 tHIGH1 tSETUP1 tSETUP1 tSETUP1 tHIGH2 tSETUP2 tHOLD2 before SCLK rising (Single-Speed Mode) before SCLK rising (Double-Speed Mode) before SCLK rising (Quad-Speed Mode) in SCLK cycles before SCLK rising after SCLK rising Slave Mode SCLK Frequency (Note 4) SCLK Period SCLK Duty Cycle FS setup FS setup FS setup FS width SDOUT setup SDOUT hold 1/(256*216 kHz) tPERIOD tHIGH1 tSETUP1 tSETUP1 tSETUP1 tHIGH2 tSETUP2 tHOLD2 before SCLK rising (Single-Speed Mode) before SCLK rising (Double-Speed Mode) before SCLK rising (Quad-Speed Mode) in SCLK cycles before SCLK rising after SCLK rising Notes: 1. TDM Quad-Speed Mode only specified to operate correctly at VLS ≥ 3.14 V. 2. Duty cycle of generated SCLK depends on duty cycle of received MCLK as specified under “System Clocking” on page 10. 3. CLKMODE functionality described in Section 4.6.3 "Master Mode Clock Dividers" on page 24. 4. In Slave Mode, the SCLK/LRCK ratio can be set according to preference; chip performance is guaranteed only when using the ratios in Section 4.7 Master and Slave Clock Frequencies on page 25. t PERIOD t HIGH1 SCLK t SETUP1 FS t SETUP2 SDOUT data data t HIGH2 new frame t HOLD2 data Figure 4. TDM Timing 16 DS624F2 CS5368 SWITCHING SPECIFICATIONS - CONTROL PORT - I²C TIMING Inputs: Logic 0 = DGND, Logic 1 = VLC, SDA CL = 30 pF Parameter SCL Clock Frequency RST Rising Edge to Start Bus Free Time Between Transmissions Start Condition Hold Time (prior to first clock pulse) Clock Low time Clock High Time Setup Time for Repeated Start Condition SDA Hold Time from SCL Falling SDA Setup time to SCL Rising Rise Time of SCL and SDA Fall Time SCL and SDA Setup Time for Stop Condition Acknowledge Delay from SCL Falling (Note 1) Symbol fscl tirs tbuf thdst tlow thigh tsust thdd tsud trc tfc tsusp tack Min 600 4.7 4.0 4.7 4.0 4.7 0 600 4.7 300 Max 100 Unit kHz ns µs - µs ns 1 300 1000 µs ns µs ns Notes: 1. Data must be held for sufficient time to bridge the transition time, tfc, of SCL. RST t Stop irs Sta rt Re p e at e d Sta rt t rd t fd Stop SDA t buf t hdst t high t hdst t fc t susp S CL t t t sud t ack t sust t rc lo w hdd Figure 5. I²C Timing DS624F2 17 CS5368 SWITCHING SPECIFICATIONS - CONTROL PORT - SPI TIMING Inputs: Logic 0 = DGND, Logic 1 = VLC, CDOUT CL = 30 pF Parameter CCLK Clock Frequency RST Rising Edge to CS Falling CS Falling to CCLK Edge CS High Time Between Transmissions CCLK Low Time CCLK High Time CDIN to CCLK Rising Setup Time CCLK Rising to DATA Hold Time CCLK Falling to CDOUT Stable Rise Time of CDOUT Fall Time of CDOUT Rise Time of CCLK and CDIN Fall Time of CCLK and CDIN (Note 2) (Note 2) (Note 1) Symbol fsck tsrs tcss tcsh tscl tsch tdsu tdh tpd tr1 tf1 tr2 tf2 Min 0 20 20 1.0 66 66 40 15 Max 6.0 Units MHz ns μs - 50 25 100 ns Notes: 1. Data must be held for sufficient time to bridge the transition time of CCLK. 2. For fsck