CS7410-CM 查看數據表（PDF） - Cirrus Logic
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CS7410-CM Datasheet PDF : 39 Pages
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CS7410
4.6 Digital Audio Output Interface
The Digital Audio Output Interface pins are described in Table 13. This is the audio PCM interface that con-
nects to an audio PCM DAC. The sample rate and the size of the samples are programmable to accommo-
date any commercially available DAC. The CS7410 has two data output pins, for up to 4 channels of PCM
output, and a separate output pin to simultaneously output IEC-958 encoded data (either compressed or
uncompressed).
Pin
Signal Name Type
Description
78
PCM_XCK
B Audio 256x/384x/512x Clock input or output to Serial DAC.
When output, it’s generated from CS7410 internal PLL.
77
SERVOCK
I Optional source of Audio 256x/384x/512x Audio Clock. May
be used for CD direct audio to match input and output
clocks.
79
PCM_MUTE
O Audio Mute control to external DAC. Polarity is programma-
ble and is three-stated at power up.
92
PCM_BCK
O Audio Bit Clock output to serial DAC. Polarity is programma-
ble.
93
PCM_LRCK
O Audio Out Left/Right Clock to serial DAC.
94
PCM_DO_0
O Audio Serial PCM Data Out[0].
95
PCM_DO_1
O Audio Serial PCM Data Out[1].
96
IEC958_O
O IEC-958 Output
Table 13. Audio Output Interface
4.7 ∆Σ Modulator Interface
The ∆Σ Interface pins are described in Table 14. The CS7410 contains a stereo Delta-Sigma (∆Σ) modula-
tor, which outputs two differential digital signals on four pins. These outputs are design to drive an external
op-amp based integrator circuit (contact Cirrus Logic Applications Engineering for details).
Pin
Signal Name Type
Description
84
DAC_LP
O ∆Σ left channel, positive output
85
DAC_LN
O ∆Σ left channel, negative output
87
DAC_RP
O ∆Σ right channel, positive output
89
DAC_RN
O ∆Σ right channel, positive output
Table 14. ∆Σ Output Interface
DS553PP1
33
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