CS98100 데이터 시트보기 (PDF) - Cirrus Logic

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CS98100

DVD Processor for Low Cost DVD Players

Cirrus Logic 

CS98100

6.6 Audio Output/Input Interface

This is the audio PCM interface that connects to an

audio CODEC. The sample rate and the size of the

samples are programmable for both input and out-

put direction.

Pin

Signal Name Type

Description

120

AUD_XCK

B

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

output, it’s generated from CS98100 internal PLL.

121

AUD_BCK

O Audio Bit Clock output to serial DAC. Polarity is programma-

ble.

122

AUD_LRCK

O Audio Out Left/Right Clock to serial DAC.

128

AUD_DO0

O Audio Serial PCM Data Out[0] (Front)

130

AUD_DO1

O Audio Serial PCM Data Out[1] (Surround)

131

AUD_DO2

O Audio Serial PCM Data Out[2] (Center + LFE)

132

AUD_DO3

O Audio Serial PCM Data Out[3] (2-channel downmix)

137

IEC958_O

O IEC-958 Output

134

AIN_DATA

I

This input can come from from an external comparator.

136

AIN_LRCK

I

Left/Right Clock. Input from external audio ADC. The

CS98100 can be programmed to use the Audio Output func-

tion’s internally generated LR clock, in which case this pin is

not required.

Table 21. Audio Output Interface Pin Assignments

51

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