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WM9714L Datasheet(PDF) 21 Page - Wolfson Microelectronics plc

Part # WM9714L
Description  AC 97 Audio CODEC
PDF  94 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9714L Datasheet(HTML) 21 Page - Wolfson Microelectronics plc

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Pre-Production
WM9714L
w
PP Rev 3.0 June 2006
21
PCMFS
PCMCLK
PCMADC/
PCMDAC
n
3
2
1
n-2 n-1
LSB
MSB
1 PCMCLK
Input Word Length (WL)
1/fs
Figure 6 PCM Interface Mono Mode (mode B, FSP=1)
In DSP mode, the left channel MSB is available on either the 1st (mode B) or 2nd (mode A) rising
edge of PCMCLK (selectable by FSP) following a rising edge of PCMFS. Right channel data
immediately follows left channel data. Depending on word length, PCMCLK frequency and sample
rate, there may be unused PCMCLK cycles between the LSB of the right channel data and the next
sample.
LEFT CHANNEL
RIGHT CHANNEL
PCMFS
PCMCLK
PCMADC/
PCMDAC
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
1 BCLK / VXCLK
Input Word Length (WL)
1/fs
Figure 7 DSP Mode Audio Interface (mode A, FSP=0)
LEFT CHANNEL
RIGHT CHANNEL
PCMFS
PCMCLK
PCMADC/
PCMDAC
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
1 BCLK / VXCLK
Input Word Length (WL)
1/fs
Figure 7 DSP Mode Audio Interface (mode B, FSP=1)



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