WM8770SIFT/RV

WM8770 w 24-bit, 192kHz 8-Channel CODEC with Volume Control DESCRIPTION FEATURES The WM8770 is a high performance, multi-channel audio codec. The WM8770 is ideal for surround sound processing applications for home hi-fi, automotive and other audio visual equipment. • Audio Performance • − 106dB SNR (‘A’ weighted @ 48kHz) DAC − 102dB SNR (‘A’ weighted @ 48kHz) ADC DAC Sampling Frequency: 8KHz – 192kHz • • • ADC Sampling Frequency: 8KHz – 96kHz 3-Wire SPI or CCB MPU Serial Control Interface Master or Slave Clocking Mode A stereo 24-bit multi-bit sigma delta ADC is used with an eight stereo channel input selector. Each channel has analogue domain mute and programmable gain control. Digital audio output word lengths from 16-32 bits and sampling rates from 8kHz to 96kHz are supported. • Four stereo 24-bit multi-bit sigma delta DACs are used with oversampling digital interpolation filters. Digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 192kHz are supported. Each DAC channel has independent analogue volume and mute control, with a set of input multiplexors allowing selection of an external 3 channel stereo analogue input into these volume controls. • The audio data interface supports I2S, left justified and right justified digital audio formats. The device is controlled via a 3 wire serial interface. The interface provides access to all features including channel selection, volume controls, mutes, de-emphasis and power management facilities. The device is available in a 64-lead TQFP package. • 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation • 5V tolerant digital inputs • • AVDD2 VMIDDAC DACREFP2 AGND2 DACREFP1 GR1 Surround Sound AV Processors and Hi-Fi systems Automotive Audio GR2 DOUT ADCLRC BCLK DACLRC DIN1 DIN2 DIN3 DIN4 ZFLAG2 MCLK REFADC ZFLAG1 AVDD1 VMIDADC AGND1 Analogue Bypass Path Feature Six channel selectable AUX input to the volume controls Eight stereo ADC inputs with analogue gain adjust from +19dB to –12dB in 1dB steps WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews AUX1L AUX1R AUX2L AUX2R AUX3L AUX3R DI CL CE RESETB DVDD DGND INPUT SOURCE SELECTOR AINVGL • • • APPLICATIONS BLOCK DIAGRAM AINVGR Programmable Audio Data Interface Modes − I2S, Left or Right Justified − 16/20/24/32 bit Word Lengths Four Independent stereo DAC outputs with independent analogue and digital volume controls Production Data, March 2011, Rev 4.3 Copyright ©2011 Wolfson Microelectronics plc WM8770 Production Data TABLE OF CONTENTS DESCRIPTION ....................................................................................................... 1 FEATURES............................................................................................................. 1 APPLICATIONS ..................................................................................................... 1 BLOCK DIAGRAM ................................................................................................. 1 TABLE OF CONTENTS ......................................................................................... 2 PIN CONFIGURATION ........................................................................................... 3 ORDERING INFORMATION .................................................................................. 3 PIN DESCRIPTION ................................................................................................ 4 ABSOLUTE MAXIMUM RATINGS ......................................................................... 6 ELECTRICAL CHARACTERISTICS ...................................................................... 7 TERMINOLOGY ............................................................................................................ 8 MASTER CLOCK TIMING...................................................................................... 9 DIGITAL AUDIO INTERFACE – MASTER MODE ......................................................... 9 DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 11 MPU INTERFACE TIMING .......................................................................................... 12 INTERNAL POWER ON RESET CIRCUIT .......................................................... 14 DEVICE DESCRIPTION ....................................................................................... 17 INTRODUCTION ......................................................................................................... 17 AUDIO DATA SAMPLING RATES............................................................................... 18 ZERO DETECT ........................................................................................................... 19 POWERDOWN MODES ............................................................................................. 20 DIGITAL AUDIO INTERFACE ..................................................................................... 20 CONTROL INTERFACE OPERATION ........................................................................ 23 CONTROL INTERFACE REGISTERS ........................................................................ 25 REGISTER MAP................................................................................................... 37 DIGITAL FILTER CHARACTERISTICS ............................................................... 44 DAC FILTER RESPONSES......................................................................................... 44 ADC FILTER RESPONSES......................................................................................... 45 ADC HIGH PASS FILTER ........................................................................................... 45 DIGITAL DE-EMPHASIS CHARACTERISTICS ........................................................... 46 APPLICATIONS INFORMATION ......................................................................... 47 RECOMMENDED EXTERNAL COMPONENTS .......................................................... 47 EXTERNAL CIRCUIT CONFIGURATION ................................................................... 48 PACKAGE DIMENSIONS .................................................................................... 50 IMPORTANT NOTICE .......................................................................................... 51 ADDRESS: .................................................................................................................. 51 REVISION HISTORY ............................................................................................ 52 w PD, Rev 4.3, March 2011 2 WM8770 Production Data DVDD ZFLAG1 ZFLAG2 DOUT DIN1 DIN2 DIN3 DIN4 DACLRC ADCLRC MCLK BCLK CL DI CE RESETB PIN CONFIGURATION AIN1L 1 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 DGND AIN1R 2 47 AGND2 AIN2L 3 46 VOUT4R AIN2R 4 45 VOUT4L AIN3L 5 44 DACREFP2 AIN3R 6 43 VOUT3R AIN4L 7 42 GR2 AIN4R 8 41 VOUT3L VMIDDAC VOUT1R AIN8L 15 34 VOUT1L AIN8R 33 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 AVDD2 AUX3R AUX3L 35 AUX2R 14 AUX2L DACREFP1 AIN7R AUX1R VOUT2L 36 AUX1L 37 13 AVDD1 12 AIN7L AGND1 AIN6R REFADC GR1 VMIDADC 38 RECR 11 RECL VOUT2R AIN6L AINOPR 39 AINVGR 40 10 AINVGL 9 AINOPL AIN5L AIN5R ORDERING INFORMATION DEVICE TEMPERATURE RANGE PACKAGE MOISTURE SENSITIVITY LEVEL PEAK SOLDERING TEMPERATURE WM8770SIFT/V -40oC to +85oC 64-lead TQFP (Pb-free) MSL3 260oC WM8770SIFT/RV -40oC to +85oC 64-lead TQFP (tape and reel, Pb-free) MSL3 260oC Note: Reel Quantity: 750 w PD, Rev 4.3, March 2011 3 WM8770 Production Data PIN DESCRIPTION PIN NAME TYPE 1 AIN1L Analogue Input Channel 1 left input multiplexor virtual ground DESCRIPTION 2 AIN1R Analogue Input Channel 1 right input multiplexor virtual ground 3 AIN2L Analogue Input Channel 2 left input multiplexor virtual ground 4 AIN2R Analogue Input Channel 2 right input multiplexor virtual ground 5 AIN3L Analogue Input Channel 3 left input multiplexor virtual ground 6 AIN3R Analogue Input Channel 3 right input multiplexor virtual ground 7 AIN4L Analogue Input Channel 4 left input multiplexor virtual ground 8 AIN4R Analogue Input Channel 4 right input multiplexor virtual ground 9 AIN5L Analogue Input Channel 5 left input multiplexor virtual ground 10 AIN5R Analogue Input Channel 5 right input multiplexor virtual ground 11 AIN6L Analogue Input Channel 6 left input multiplexor virtual ground 12 AIN6R Analogue Input Channel 6 right input multiplexor virtual ground 13 AIN7L Analogue Input Channel 7 left input multiplexor virtual ground 14 AIN7R Analogue Input Channel 7 right input multiplexor virtual ground 15 AIN8L Analogue Input Channel 8 left input multiplexor virtual ground 16 AIN8R Analogue Input Channel 8 right input multiplexor virtual ground 17 AINOPL Analogue Output 18 AINVGL Analogue Input Left channel multiplexor virtual ground 19 AINVGR Analogue Input Right channel multiplexor virtual ground 20 AINOPR Analogue Output Right channel multiplexor output 21 RECL Analogue Output Left channel input mux select output 22 RECR Analogue Output Right channel input mux select output 23 REFADC Analogue Output ADC reference buffer decoupling pin; 10uF external decoupling 24 VMIDADC Analogue Output ADC midrail divider decoupling pin; 10uF external decoupling 25 AGND1 Supply Analogue negative supply and substrate connection 26 AVDD1 Supply Analogue positive supply 27 AUX1L Analogue input 3.1 Multiplexor channel 1 left virtual ground input 28 AUX1R Analogue input 3.1 Multiplexor channel 1 right virtual ground input 29 AUX2L Analogue input 3.1 Multiplexor channel 2 left virtual ground input 30 AUX2R Analogue input 3.1 Multiplexor channel 2 right virtual ground input 31 AUX3L Analogue input 3.1 Multiplexor channel 3 left virtual ground input 32 AUX3R Analogue input 3.1 Multiplexor channel 3 right virtual ground input 33 AVDD2 Supply Analogue positive supply 34 VOUT1L Analogue output DAC channel 1 left output 35 VOUT1R Analogue output DAC channel 1 right output 36 DACREFP1 Supply 37 VOUT2L Analogue output 38 GR1 Supply 39 VOUT2R Analogue output DAC channel 2 right output 40 VMIDDAC Analogue output DAC midrail decoupling pin ; 10uF external decoupling 41 VOUT3L Analogue output DAC channel 3 left output 42 GR2 Supply 43 VOUT3R Analogue output 44 DACREFP2 Supply 45 VOUT4L Analogue output DAC channel 4 left output 46 VOUT4R Analogue output DAC channel 4 right output 47 AGND2 Supply Analogue negative supply and substrate connection 48 DGND Supply Digital negative supply 49 DVDD Supply Digital positive supply 50 ZFLAG1 Digital output DAC Zero Flag output 51 ZFLAG2 Digital output DAC Zero Flag output w Left channel multiplexor output DAC positive reference supply DAC channel 2 left output DAC ground reference DAC ground reference DAC channel 3 right output DAC positive reference supply PD, Rev 4.3, March 2011 4 WM8770 Production Data PIN NAME TYPE 52 DOUT Digital output ADC data output DESCRIPTION 53 DIN1 Digital Input DAC channel 1 data input 54 DIN2 Digital Input DAC channel 2 data input 55 DIN3 Digital Input DAC channel 3 data input 56 DIN4 Digital Input DAC channel 4 data input 57 DACLRC Digital input/output DAC left/right word clock 58 ADCLRC Digital input/output ADC left/right word clock 59 BCLK Digital input/output ADC and DAC audio interface bit clock 60 MCLK Digital input Master DAC and ADC clock; 256, 384, 512 or 768fs (fs = word clock frequency) 61 CL Digital input Serial interface clock (5V tolerant) 62 DI Digital input Serial interface data (5V tolerant) 63 CE Digital input Serial interface Latch signal (5V tolerant) 64 RESETB Digital input Device reset input (mutes DAC outputs, resets gain stages to 0dB) (5V tolerant) Note: Digital input pins have Schmitt trigger input buffers and are 5V tolerant. w PD, Rev 4.3, March 2011 5 WM8770 Production Data ABSOLUTE MAXIMUM RATINGS 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. Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage conditions prior to surface mount assembly. These levels are: MSL1 = unlimited floor life at