CS7808 datasheet(45/52 Pages) CIRRUS

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CS7808

6.7

Audio Output/Input Interface

This is the audio PCM interface that connects to an audio CODEC. See Table 22. The sample rate and the

size of the samples are programmable for both input and output direction.

Signal Name

Type

Description

191

AUD_XCLK

Audio 256x/384x Clock input or output to Serial DAC. When

output, is generated from CS7808 internal PLL.

124

AUD_BCK

Audio Bit Clock output to serial DAC.

128

AUD_LRCK

Audio Out Left/Right Clock to serial DAC.

135

AUD_DO_0

Audio Serial Data Out[0].

136

AUD_DO_1

Audio Serial Data Out[1].

133

AUD_DO_2

Audio Serial Data Out[2].

177

AUD_DO_3

Audio Serial Data Out[3].

204

SPDIF_O

S/PDIF Output

137

AIN_BCK

Audio Input Bit Clock. The CS7808 can be programmed to

use the Audio Output function’s internally generated bit

clock, in which case this pin is not required.

139

AIN_LRCK

Audio Input Left/Right Clock. The CS7808 can be pro-

grammed to use the Audio Output function’s internally gen-

erated LR clock, in which case this pin is not required.

140

AIN_DATA

Audio Input Data from Serial ADC.

Table 22. Audio Input/Output Interface

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