WM8581

w DESCRIPTION The WM8581 is a multi-channel audio CODEC with S/PDIF transceiver. The WM8581 is ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audiovisual equipment. Integrated into the device is a stereo 24-bit multi-bit sigma delta ADC with support for digital audio output word lengths from 16-bit to 32-bit, and sampling rates from 8kHz to 192kHz. Also included are four stereo 24-bit multi-bit sigma delta DACs, each with a dedicated oversampling digital interpolation filter. Digital audio input word lengths from 16bits to 32-bits and sampling rates from 8kHz to 192kHz are supported. Each DAC channel has independent digital volume and mute control. Two independent audio data interfaces support I2S, Left Justified, Right Justified and DSP digital audio formats. Each audio interface can operate in either Master Mode or Slave Mode. The S/PDIF transceiver is IEC-60958-3 compatible and supports frame rates from 32k/s to 96k/s. It has four multiplexed inputs and one output. Status and error monitoring is built-in and results can reported over the serial interface or via GPO pins. S/PDIF Channel Block configuration is also supported. The device has two PLLs that can be configured independently to generate two system clocks for internal or external use. Device control and setup is via a 2-wire or 3-wire (SPI compatible) serial interface. The serial interface provides access to all features including channel selection, volume controls, mutes, de-emphasis, S/PDIF control/status, and power management facilities. Alternatively, the device has a Hardware Control Mode where device features can be enabled/disabled using selected pins. The device is available in a 48-lead TQFP package. • • • • • • WM8581 Multichannel CODEC with S/PDIF Transceiver FEATURES • • • Multi-channel CODEC with 4 Stereo DACs and 1 Stereo ADC Integrated S/PDIF / IEC-60958-3 transceiver Audio Performance − − 103dB SNR (‘A’ weighted @ 48kHz) DAC -90dB THD (48kHz) DAC − 100dB SNR (‘A’ weighted @ 48kHz) ADC − -87dB THD (48kHz) ADC DAC Sampling Frequency: 8kHz – 192kHz ADC Sampling Frequency: 8kHz – 192kHz Independent ADC and DAC Sample Rates 2 and 3-Wire Serial Control Interface with readback, or Hardware Control Interface GPO pins allow visibility of user selected status flags Programmable Audio Data Interface Modes − I2S, Left, Right Justified or DSP − 16/20/24/32 bit Word Lengths Four independent stereo DAC outputs with independent digital volume controls Two Independent Master or Slave Audio Data Interfaces Flexible Digital Interface Routing with Clock Selection Control 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital Supply Operation 48-lead TQFP Package • • • • • APPLICATIONS • • • • Digital TV DVD Players and Receivers Surround Sound AV Processors and Hi-Fi systems Automotive Audio WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, April 2007, Rev 4.0 Copyright ©2007 Wolfson Microelectronics plc WM8581 BLOCK DIAGRAM Production Data w PD Rev 4.0 April 2007 2 Production Data WM8581 TABLE OF CONTENTS DESCRIPTION ............................................................................................................................................. 1 FEATURES .................................................................................................................................................. 1 APPLICATIONS ........................................................................................................................................... 1 BLOCK DIAGRAM ....................................................................................................................................... 2 TABLE OF CONTENTS............................................................................................................................... 3 PIN CONFIGURATION ................................................................................................................................ 4 ORDERING INFORMATION........................................................................................................................ 4 PIN DESCRIPTION ...................................................................................................................................... 5 MULTI-FUNCTION PINS .......................................................................................................................................... 6 ABSOLUTE MAXIMUM RATINGS .............................................................................................................. 8 RECOMMENDED OPERATING CONDITIONS .......................................................................................... 9 ELECTRICAL CHARACTERISTICS............................................................................................................ 9 TERMINOLOGY...................................................................................................................................................... 15 MASTER CLOCK TIMING ...................................................................................................................................... 15 DIGITAL AUDIO INTERFACE – MASTER MODE .................................................................................................. 16 DIGITAL AUDIO INTERFACE – SLAVE MODE ..................................................................................................... 17 CONTROL INTERFACE TIMING – 3-WIRE MODE ............................................................................................... 18 CONTROL INTERFACE TIMING – 2-WIRE MODE ............................................................................................... 18 DEVICE DESCRIPTION............................................................................................................................. 20 INTRODUCTION..................................................................................................................................................... 20 CONTROL INTERFACE OPERATION ................................................................................................................... 21 DIGITAL AUDIO INTERFACES .............................................................................................................................. 25 AUDIO DATA FORMATS........................................................................................................................................ 27 AUDIO INTERFACE CONTROL ............................................................................................................................. 31 DAC FEATURES .................................................................................................................................................... 33 ADC FEATURES .................................................................................................................................................... 40 DIGITAL ROUTING OPTIONS................................................................................................................................ 41 CLOCK SELECTION .............................................................................................................................................. 43 PHASE-LOCKED LOOPS AND S/PDIF CLOCKING (SOFTWARE MODE) .......................................................... 49 PHASE-LOCKED LOOPS AND S/PDIF CLOCKING (HARDWARE MODE).......................................................... 57 S/PDIF TRANSCEIVER.......................................................................................................................................... 58 S/PDIF TRANSMITTER .......................................................................................................................................... 59 S/PDIF RECEIVER ................................................................................................................................................. 62 POWERDOWN MODES......................................................................................................................................... 71 INTERNAL POWER ON RESET CIRCUIT............................................................................................................. 73 HARDWARE CONTROL MODE............................................................................................................................. 75 REGISTER MAP ..................................................................................................................................................... 78 DIGITAL FILTER CHARACTERISTICS .................................................................................................... 94 DAC FILTER RESPONSES.................................................................................................................................... 94 DIGITAL DE-EMPHASIS CHARACTERISTICS...................................................................................................... 95 ADC FILTER RESPONSES.................................................................................................................................... 95 ADC HIGH PASS FILTER....................................................................................................................................... 96 APPLICATIONS INFORMATION............................................................................................................... 97 RECOMMENDED EXTERNAL COMPONENTS ..................................................................................................... 97 PACKAGE DIMENSIONS .......................................................................................................................... 99 IMPORTANT NOTICE.............................................................................................................................. 100 ADDRESS:............................................................................................................................................................ 100 w PD Rev 4.0 April 2007 3 WM8581 PIN CONFIGURATION Production Data ORDERING INFORMATION DEVICE W M8581AGEFT/V W M8581AGEFT/RV Note: Reel quantity = 2,200 TEMPERATURE RANGE -25 to +85oC -25 to +85oC PACKAGE 48-lead TQFP (Pb-free) 48-lead TQFP (Pb-free, tape and reel) MOISTURE SENSITIVITY LEVEL MSL1 MSL1 PEAK SOLDERING TEMPERATURE 260°C 260°C w PD Rev 4.0 April 2007 4 Production Data WM8581 PIN DESCRIPTION PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 NAME VOUT4L VOUT4R PGND PVDD XTI XTO MFP7 MFP6 SPDIFOP MFP5 MFP4 MFP3 SPDIFIN1 CLKOUT DVDD DGND MUTE DIN1 DIN2 DIN3 DIN4 PAIFRX_LRCLK PAIFRX_BCLK MCLK DOUT PAIFTX_LRCLK MFP1 MFP2 HWMODE SWMODE SDO SDIN SCLK CSB AINR AINL ADCREFP VMID AGND AVDD VOUT1L VOUT1R VOUT2L VOUT2R VREFP VREFN TYPE Analogue Output Analogue Output Supply Supply Digital Input Digital Output Digital Input/Output Digital Input/Output Digital Output Digital Input/Output Digital Input/Output Digital Input/Output Digital Input Digital Output Supply Supply Digital Input/Output Digital Input Digital Input Digital Input Digital Input Digital Input/Output Digital Input/Output Digital Input/Output Digital Output Digital Input/Output Digital Input/Output Digital Input/Output Digital Input Digital Input/Output Digital Output Digital Input/Output Digital Input Digital Input Analogue Input Analogue Input Analogue Output Analogue Output Supply Supply Analogue Output Analogue Output Analogue Output Analogue Output Analogue Input Analogue Input DAC channel 4 left output DAC channel 4 right output PLL ground PLL positive supply Crystal or CMOS clock input Crystal output Multi-Function Pin (MFP) 7. See Table 1 for details of all MFP pins. Multi-Function Pin (MFP) 6. See Table 1 for details of all MFP pins. S/PDIF transmitter output Multi-Function Pin (MFP) 5. See Table 1 for details of all MFP pins. Multi-Function Pin (MFP) 4. See Table 1 for details of all MFP pins. Multi-Function Pin (MFP) 3. See Table 1 for details of all MFP pins. S/PDIF Receiver Input 1 PLL or crystal oscillator clock output Digital positive supply Digital ground DAC mute-all input/ All-DAC Infinite Zero Detect (IZD) flag output Primary Audio Interface (PAIF) receiver data input 1 Primary Audio Interface (PAIF) receiver data input 2 Primary Audio Interface (PAIF) receiver data input 3 Primary Audio Interface (PAIF) receiver data input 4 Primary Audio Interface (PAIF) receiver left/right word clock Primary Audio Interface (PAIF) receiver bit clock System Master clock; 256, 384, 512, 768, 1024 or 1152 fs Primary Audio Interface (PAIF) transmitter data output Primary audio interface transmitter left/right word clock Multi-Function Pin (MFP) 1. See Table 1 for details of all MFP pins. Multi-Function Pin (MFP) 2. See Table 1 for details of all MFP pins. Configures control to be either Software Mode or Hardware Mode Configures software interface to be either 2-wire or 3-wire. See note 2. 3-wire control interface data output. See note 3. Control interface data input (and output under 2-wire control) Control interface clock 3-wire control interface latch signal / device address selection ADC Right Channel Input ADC Left Channel Input ADC reference buffer decoupling pin; 10uF external decoupling Midrail divider decoupling pin; 10uF external decoupling Analogue ground Analogue positive supply DAC channel 1 left output DAC channel 1 right output DAC channel 2 left output DAC channel 2 right output DAC and ADC positive reference DAC and ADC ground reference DESCRIPTION w PD Rev 4.0 April 2007 5 WM8581 PIN 47 48 Notes : 1. 2. 3. Digital input pins have Schmitt trigger input buffers. Pins 32, 33, 34 are 5V tolerant. In hardware control mode, pin 30 is used for UNLOCK flag output. In hardware control mode, pin 31 is used for NON_AUDIO flag output. NAME VOUT3L VOUT3R TYPE Analogue Output Analogue Output DAC channel 3 left output DAC channel 3 right output DESCRIPTION Production Data MULTI-FUNCTION PINS The WM8581 has 7 Multi-Function Input/Output pins (MFP1 etc.). The function and direction (input/output) of these pins reconfigured using the HWMODE input pin and software register control as shown below. If HWMODE is set, the MFPs have the function shown in column 1 of Table 1. If HWMODE is not set, and the register SAIF_EN is set, the MFPs have the function shown in column 2. Otherwise, the GPOnOP registers determine the MFP function as shown in columns 3 and 4. Y HWMODE = 1 N Y SAIF_EN = 1 N GPIOnOP PIN NAME HARDWARE CONTROL MODE FUNCTION 1 PAIFTX_BCLK ADCMCLK DR1 DR2 DR3 DR4 ALLPD SECONDARY AUDIO INTERFACE FUNCTION 2 n/a1 n/a 1 S/PDIF INPUT & INDEPENDENT CLOCKING 3 PAIFTX_BCLK2 ADCMCLK3 SPDIFIN2 SPDIFIN3 SPDIFIN4 GPO6 GPO7 GENERAL PURPOSE OUTPUT FUNCTION 4 GPO1 GPO2 GPO3 GPO4 GPO5 GPO6 GPO7 MFP1 MFP2 MFP3 MFP4 MFP5 MFP6 MFP7 n/a1 SAIF_DIN SAIF_DOUT SAIF_BCLK SAIF_LRCLK Table 1 Multi-Function Pin Configuration Notes: 1. 2. 3. These pins are not used as part of the Secondary Audio Interface, so their function is that of either Column 3 or Column 4. MFP1 can by GPO1 only if ADC_CLKSEL and PAIFTXMS_CLKSEL (if in master mode) source MCLK.Note that by default ADC_CLKSEL sources ADCMCLK pin. MFP2 can be GPO2 if neither ADC_CLKSEL, TX_CLKSEL or SAIFMS_CLKSEL (if in master mode) source ADCMCLK.Note that by default all three ADC_CLKSEL sources ADCMCLK pin. w PD Rev 4.0 April 2007 6 Production Data WM8581 TYPE Digital Input/Output Digital Input Digital Input Digital Output Digital Input/Output Digital Input/Output Digital Input Digital Output Digital Input Digital Input DESCRIPTION Primary Audio Interface Transmitter (PAIFTX) Bit Clock Master ADC clock; 256fs, 384fs, 512fs ,786fs, 1024fs or 1152fs Secondary Audio Interface (SAIF) Receiver data input Secondary Audio Interface (SAIF) Transmitter data output Secondary Audio Interface (SAIF) Bit Clock Secondary Audio Interface (SAIF) Left/Right Word Clock S/PDIF Receiver Input General Purpose Output Internal Digital Routing Configuration in Hardware Mode Chip Powerdown in Hardware Mode PIN FUNCTION PAIFTX_BCLK ADCMCLK SAIF_DIN SAIF_DOUT SAIF_BCLK SAIF_LRCLK SPDIFIN2/3/4 GPO1 - GPO7 DR1/2/3/4 ALLPD Table 2 Multi-Function Pin Description w PD Rev 4.0 April 2007 7 WM8581 ABSOLUTE MAXIMUM RATINGS Production Data Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device. The WM8581 has been classified as MSL1, which has an unlimited floor life at 0.555fs 0.555fs -60 dB f > 0.5465fs DAC Filter ±0.05 dB -3dB 0.487fs ±0.05 dB 0.444fs 0.5465fs -65 dB TEST CONDITIONS ADC Filter ±0.01 dB -6dB 0 0.5fs ±0.01 dB 0.4535fs MIN TYP MAX UNIT Production Data DAC FILTER RESPONSES 0.2 0 0.15 -20 0.1 Response (dB) Response (dB) -40 0.05 0 -0.05 -0.1 -60 -80 -100 -0.15 -0.2 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency (Fs) 0.35 0.4 0.45 0.5 -120 Figure 37 DAC Digital Filter Frequency Response – 44.1, 48 and 96KHz Figure 38 DAC Digital Filter Ripple –44.1, 48 and 96kHz 0.2 0 0 -20 Response (dB) Response (dB) -0.2 -40 -0.4 -60 -0.6 -0.8 -80 -1 0 0.2 0.4 0.6 Frequency (Fs) 0.8 1 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency (Fs) 0.35 0.4 0.45 0.5 Figure 39 DAC Digital Filter Frequency Response – 192KHz Figure 40 DAC Digital Filter Ripple – 192kHz w PD Rev 4.0 April 2007 94 Production Data WM8581 DIGITAL DE-EMPHASIS CHARACTERISTICS 0 0.4 0.3 -2 0.2 Response (dB) -4 Response (dB) 0.1 0 -0.1 -0.2 -6 -8 -0.3 -10 0 5 10 Frequency (kHz) 15 20 -0.4 0 5 10 Frequency (kHz) 15 20 Figure 41 De-Emphasis Frequency Response (44.1KHz) 0 Figure 42 De-Emphasis Error (44.1KHz) 1 0.8 -2 0.6 0.4 Response (dB) -4 Response (dB) 0.2 0 -0.2 -0.4 -6 -8 -0.6 -0.8 -10 0 5 10 15 Frequency (kHz) 20 -1 0 5 10 15 Frequency (kHz) 20 Figure 43 De-Emphasis Frequency Response (48kHz) Figure 44 De-Emphasis Error (48kHz) ADC FILTER RESPONSES 0.02 0 0.015 0.01 -20 Response (dB) -40 Response (dB) 0.005 0 -0.005 -0.01 -0.015 -0.02 -60 -80 0 0.5 1 1.5 Frequency (Fs) 2 2.5 3 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency (Fs) 0.35 0.4 0.45 0.5 Figure 45 ADC Digital Filter Frequency Response Figure 46 ADC Digital Filter Ripple w PD Rev 4.0 April 2007 95 WM8581 Production Data ADC HIGH PASS FILTER The WM8581 has a selectable digital high pass filter to remove DC offsets. The filter response is characterised by the following polynomial. H(z) = 1 - z-1 1 - 0.9995z-1 0 Response (dB) -5 -10 -15 0 0.0005 0.001 Frequency (Fs) 0.0015 0.002 Figure 47 ADC Highpass Filter Response w PD Rev 4.0 April 2007 96 Production Data WM8581 APPLICATIONS INFORMATION RECOMMENDED EXTERNAL COMPONENTS Figure 48 Recommended–External Components - Hardware w PD Rev 4.0 April 2007 97 WM8581 Production Data Figure 49 Recommended–External Components - Software w PD Rev 4.0 April 2007 98 Production Data WM8581 PACKAGE DIMENSIONS FT: 48 PIN TQFP (7 x 7 x 1.0 mm) DM004.C b e 25 36 37 24 E1 E 48 13 1 12 Θ c D1 D L A A2 A1 -Cccc C SEATING PLANE Symbols A A1 A2 b c D D1 E E1 e L Θ ccc REF: Dimensions (mm) MIN NOM MAX --------1.20 0.05 ----0.15 0.95 1.00 1.05 0.17 0.22 0.27 0.09 ----0.20 9.00 BSC 7.00 BSC 9.00 BSC 7.00 BSC 0.50 BSC 0.45 0.60 0.75 o o o 3.5 7 0 Tolerances of Form and Position 0.08 JEDEC.95, MS-026 NOTES: A. ALL LINEAR DIMENSIONS ARE IN MILLIMETERS. B. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE. C. BODY DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSION, NOT TO EXCEED 0.25MM. D. MEETS JEDEC.95 MS-026, VARIATION = ABC. REFER TO THIS SPECIFICATION FOR FURTHER DETAILS. w PD Rev 4.0 April 2007 99 WM8581 IMPORTANT NOTICE Production Data W olfson Microelectronics plc (“Wolfson”) products and services are sold subject to Wolfson’s terms and conditions of sale, delivery and payment supplied at the time of order acknowledgement. Wolfson warrants performance of its products to the specifications in effect at the date of shipment. Wolfson reserves the right to make changes to its products and specifications or to discontinue any product or service without notice. Customers should therefore obtain the latest version of relevant information from Wolfson to verify that the information is current. Testing and other quality control techniques are utilised to the extent Wolfson deems necessary to support its warranty. Specific testing of all parameters of each device is not necessarily performed unless required by law or regulation. In order to minimise risks associated with customer applications, the customer must use adequate design and operating safeguards to minimise inherent or procedural hazards. Wolfson is not liable for applications assistance or customer product design. The customer is solely responsible for its selection and use of Wolfson products. Wolfson is not liable for such selection or use nor for use of any circuitry other than circuitry entirely embodied in a Wolfson product. Wolfson’s products are not intended for use in life support systems, appliances, nuclear systems or systems where malfunction can reasonably be expected to result in personal injury, death or severe property or environmental damage. Any use of products by the customer for such purposes is at the customer’s own risk. Wolfson does not grant any licence (express or implied) under any patent right, copyright, mask work right or other intellectual property right of Wolfson covering or relating to any combination, machine, or process in which its products or services might be or are used. Any provision or publication of any third party’s products or services does not constitute Wolfson’s approval, licence, warranty or endorsement thereof. Any third party trade marks contained in this document belong to the respective third party owner. Reproduction of information from Wolfson datasheets is permissible only if reproduction is without alteration and is accompanied by all associated copyright, proprietary and other notices (including this notice) and conditions. Wolfson is not liable for any unauthorised alteration of such information or for any reliance placed thereon. Any representations made, warranties given, and/or liabilities accepted by any person which differ from those contained in this datasheet or in Wolfson’s standard terms and conditions of sale, delivery and payment are made, given and/or accepted at that person’s own risk. Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: W olfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w PD Rev 4.0 April 2007 100