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CS7808-CM Datasheet(PDF) 45 Page - Cirrus Logic

Part No. CS7808-CM
Description  MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS7808-CM Datasheet(HTML) 45 Page - Cirrus Logic

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45
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.
Pin
Signal Name
Type
Description
191
AUD_XCLK
B
Audio 256x/384x Clock input or output to Serial DAC. When
output, is generated from CS7808 internal PLL.
124
AUD_BCK
O
Audio Bit Clock output to serial DAC.
128
AUD_LRCK
O
Audio Out Left/Right Clock to serial DAC.
135
AUD_DO_0
O
Audio Serial Data Out[0].
136
AUD_DO_1
O
Audio Serial Data Out[1].
133
AUD_DO_2
O
Audio Serial Data Out[2].
177
AUD_DO_3
O
Audio Serial Data Out[3].
204
SPDIF_O
O
S/PDIF Output
137
AIN_BCK
I
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
I
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
I
Audio Input Data from Serial ADC.
Table 22. Audio Input/Output Interface


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