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WM8771FT

更新时间： 2024-11-24 01:12:39
品牌 Logo 应用领域
欧胜 - WOLFSON /
页数 文件大小 规格书
44页 336K
描述
24-bit, 192kHz 8-Channel Codec

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中文翻译

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WM8771FT 数据手册

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WM8771  
w
24-bit, 192kHz 8-Channel Codec  
DESCRIPTION  
FEATURES  
•
Audio Performance  
The WM8771 is a high performance, multi-channel audio  
codec. The WM8771 is ideal for surround sound processing  
applications for home hi-fi, automotive and other audio  
visual equipment.  
−
−
108dB SNR (‘A’ weighted @ 48kHz) DAC  
97dB SNR (‘A’ weighted @ 48kHz) ADC  
•
•
•
•
•
DAC Sampling Frequency: 8kHz – 192kHz  
ADC Sampling Frequecncy: 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 a  
three 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.  
Programmable Audio Data Interface Modes  
−
−
I2S, Left, Right Justified or DSP  
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 digital attenuation and mute control. The audio  
data interface supports I2S, left justified, right justified and  
DSP digital audio formats.  
16/20/24/32 bit Word Lengths  
•
•
Four Independent Stereo DAC Audio Outputs  
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  
64-Pin TQFP Package  
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-pin  
TQFP package.  
APPLICATIONS  
•
•
Surround Sound Processors  
Automotive Audio  
BLOCK DIAGRAM  
AIN1L  
AIN1R  
VOUT1L  
VOUT1R  
LOW  
PASS  
FILTERS  
DIGITAL  
FILTERS  
STEREO  
DAC  
AIN2L  
AIN2R  
AIN3L  
AIN3R  
VOUT2L  
VOUT2R  
LOW  
PASS  
FILTERS  
AIN4L  
AIN4R  
DIGITAL  
FILTERS  
STEREO  
DAC  
AUDIO INTERFACE  
&
AIN5L  
AIN5R  
STEREO  
ADC  
AIN6L  
AIN6R  
VOUT3L  
VOUT3R  
DIGITAL FILTERS  
LOW  
PASS  
FILTERS  
DIGITAL  
FILTERS  
STEREO  
DAC  
AIN7L  
AIN7R  
AIN8L  
AIN8R  
VOUT4L  
VOUT4R  
LOW  
PASS  
FILTERS  
DIGITAL  
FILTERS  
STEREO  
DAC  
AINOPL  
AINOPR  
REC1L  
REC1R  
MUTE  
MUTE  
MUTE  
CONTROL INTERFACE  
REC2L  
REC2R  
w
REC3L  
REC3R  
WM8771  
CCB is a trademark of SANYO ELECTRIC CO., LTD  
CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO.  
WOLFSON MICROELECTRONICS LTD  
Product Preview, December 2001, Rev 2.0  
Copyright 2001 Wolfson Microelectronics Ltd.  
w :: www.wolfsonmicro.com  
1234567...44

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