FEATURES
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 16/20/24/32 bit Word Lengths Four 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 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation
|
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-pin TQFP package.
|
;)
