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WM8770SIFV - 24-bit, 192kHz 8-Channel Codec with Volume Control - Wolfson Microelectronics plc

型  号:
WM8770SIFV
大  小:
564.45KB 共52页
厂  商:
WOLFSON[WolfsonMicroelectronicsplc]
主  页:
http://www.wolfsonmicro.com
功能介绍:
WM8770SIFV - 24-bit, 192kHz 8-Channel Codec with Volume Control - Wolfson Microelectronics plc
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w DESCRIPTION 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. 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, right justified and DSP 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. WM8770 24-bit, 192kHz 8-Channel Codec with Volume Control FEATURES • 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 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 analogue and digital volume controls 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 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation 5V tolerant digital inputs • • • • • • • • • • • APPLICATIONS • • Surround Sound AV Processors and Hi-Fi systems Automotive Audio DACREFP1 DACREFP2 VMIDDAC AGND2 BLOCK DIAGRAM VMIDADC REFADC ZFLAG1 AINVGR ZFLAG2 AINVGL AGND1 AVDD1 MCLK DOUT ADCLRC BCLK DACLRC DIN1 DIN2 DIN3 DIN4 AIN1L AIN1R AIN2L AIN2R AIN3L AIN3R AIN4L AIN4R AIN5L AIN5R AIN6L AIN6R AIN7L AIN7R AIN8L AIN8R INPUT SOURCE SELECTOR STEREO DAC AVDD2 LOW PASS FILTERS VOUT1L VOUT1R VOUT2L VOUT2R VOUT3L VOUT3R VOUT4L VOUT4R AUDIO INTERFACE STEREO ADC AND DIGITAL FILTERS STEREO DAC LOW PASS FILTERS STEREO DAC LOW PASS FILTERS STEREO DAC LOW PASS FILTERS AINOPL AINOPR RECL RECR MUTE CONTROL INTERFACE W WM8770 GR1 GR2 AUX1L AUX1R AUX2L AUX2R AUX3L AUX3R RESETB CE DGND CCB is a trademark of SANYO ELECTRIC CO., LTD DVDD CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO. WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ CL DI Production Data, June 2005, Rev 4.1 Copyright 2005 Wolfson Microelectronics plc WM8770 TABLE OF CONTENTS Production Data 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 ........................................................................ 24 CONTROL INTERFACE REGISTERS ........................................................................ 26 REGISTER MAP...................................................................................................38 DIGITAL FILTER CHARACTERISTICS ...............................................................45 DAC FILTER RESPONSES......................................................................................... 45 ADC FILTER RESPONSES......................................................................................... 46 ADC HIGH PASS FILTER ........................................................................................... 46 DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 47 APPLICATIONS INFORMATION .........................................................................48 RECOMMENDED EXTERNAL COMPONENTS .......................................................... 48 EXTERNAL CIRCUIT CONFIGURATION ................................................................... 49 PACKAGE DIMENSIONS ....................................................................................51 IMPORTANT NOTICE ..........................................................................................52 ADDRESS: .................................................................................................................. 52 w PD Rev 4.1 June 2005 2 Production Data WM8770 PIN CONFIGURATION ADCLRC DACLRC RESETB ZFLAG2 ZFLAG1 MCLK BCLK AIN1L AIN1R AIN2L AIN2R AIN3L AIN3R AIN4L AIN4R AIN5L AIN5R AIN6L AIN6R AIN7L AIN7R AIN8L AIN8R 1 2 3 4 5 6 7 8 9 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 DVDD DOUT DIN4 DIN3 DIN2 DIN1 CE CL DI DGND AGND2 VOUT4R VOUT4L DACREFP2 VOUT3R GR2 VOUT3L VMIDDAC VOUT2R GR1 VOUT2L DACREFP1 VOUT1R VOUT1L AVDD2 10 11 12 13 14 15 33 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 RECL AUX1R REFADC AINVGR AINOPR AINOPL AINVGL VMIDADC AGND1 AVDD1 AUX2L RECR AUX2R ORDERING INFORMATION DEVICE W M8770SIFT/V TEMPERATURE RANGE -25oC to +85oC PACKAGE 64-lead TQFP (Pb-free) MOISTURE SENSITIVITY LEVEL MSL3 PEAK SOLDERING TEMPERATURE 260oC w AUX3R AUX1L AUX3L PD Rev 4.1 June 2005 3 WM8770 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 47 48 49 50 51 NAME AIN1L AIN1R AIN2L AIN2R AIN3L AIN3R AIN4L AIN4R AIN5L AIN5R AIN6L AIN6R AIN7L AIN7R AIN8L AIN8R AINOPL AINVGL AINVGR AINOPR RECL RECR REFADC VMIDADC AGND1 AVDD1 AUX1L AUX1R AUX2L AUX2R AUX3L AUX3R AVDD2 VOUT1L VOUT1R DACREFP1 VOUT2L GR1 VOUT2R VMIDDAC VOUT3L GR2 VOUT3R DACREFP2 VOUT4L VOUT4R AGND2 DGND DVDD ZFLAG1 ZFLAG2 TYPE Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Input Analogue Output Analogue Input Analogue Input Analogue Output Analogue Output Analogue Output Analogue Output Analogue Output Supply Supply Analogue input Analogue input Analogue input Analogue input Analogue input Analogue input Supply Analogue output Analogue output Supply Analogue output Supply Analogue output Analogue output Analogue output Supply Analogue output Supply Analogue output Analogue output Supply Supply Supply Digital output Digital output DESCRIPTION Channel 1 left input multiplexor virtual ground Channel 1 right input multiplexor virtual ground Channel 2 left input multiplexor virtual ground Channel 2 right input multiplexor virtual ground Channel 3 left input multiplexor virtual ground Channel 3 right input multiplexor virtual ground Channel 4 left input multiplexor virtual ground Channel 4 right input multiplexor virtual ground Channel 5 left input multiplexor virtual ground Channel 5 right input multiplexor virtual ground Channel 6 left input multiplexor virtual ground Channel 6 right input multiplexor virtual ground Channel 7 left input multiplexor virtual ground Channel 7 right input multiplexor virtual ground Channel 8 left input multiplexor virtual ground Channel 8 right input multiplexor virtual ground Left channel multiplexor output Left channel multiplexor virtual ground Right channel multiplexor virtual ground Right channel multiplexor output Left channel input mux select output Right channel input mux select output Production Data ADC reference buffer decoupling pin; 10uF external decoupling ADC midrail divider decoupling pin; 10uF external decoupling Analogue negative supply and substrate connection Analogue positive supply 3.1 Multiplexor channel 1 left virtual ground input 3.1 Multiplexor channel 1 right virtual ground input 3.1 Multiplexor channel 2 left virtual ground input 3.1 Multiplexor channel 2 right virtual ground input 3.1 Multiplexor channel 3 left virtual ground input 3.1 Multiplexor channel 3 right virtual ground input Analogue positive supply DAC channel 1 left output DAC channel 1 right output DAC positive reference supply DAC channel 2 left output DAC ground reference DAC channel 2 right output DAC midrail decoupling pin ; 10uF external decoupling DAC channel 3 left output DAC ground reference DAC channel 3 right output DAC positive reference supply DAC channel 4 left output DAC channel 4 right output Analogue negative supply and substrate connection Digital negative supply Digital positive supply DAC Zero Flag output DAC Zero Flag output PD Rev 4.1 June 2005 4 w Production Data PIN 52 53 54 55 56 57 58 59 60 61 62 63 64 NAME DOUT DIN1 DIN2 DIN3 DIN4 DACLRC ADCLRC BCLK MCLK CL DI CE RESETB TYPE Digital output Digital Input Digital Input Digital Input Digital Input Digital input/output Digital input/output Digital input/output Digital input Digital input Digital input Digital input Digital input ADC data output DAC channel 1 data input DAC channel 2 data input DAC channel 3 data input DAC channel 4 data input DAC left/right word clock ADC left/right word clock ADC and DAC audio interface bit clock DESCRIPTION WM8770 Master DAC and ADC clock; 256, 384, 512 or 768fs (fs = word clock frequency) Serial interface clock (5V tolerant) Serial interface data (5V tolerant) Serial interface Latch signal (5V tolerant) 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 4.1 June 2005 5 WM8770 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. 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

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