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WM9713 数据表(PDF) 25 Page - Wolfson Microelectronics plc

部件名 WM9713
功能描述  AC 97 AUDIO TOUCHPANEL CODEC
PDF  111 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM9713 数据表(HTML) 25 Page - Wolfson Microelectronics plc

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Preliminary Technical Data
WM9713L
1
PTD, March 2004, Rev 2.2
25
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)
In Left Justified mode, the MSB is available on the first rising edge of PCMCLK following a PCMFS
transition. The other bits up to the LSB are then transmitted in order. Depending on word length,
PCMCLK frequency and sample rate, there may be unused PCMCLK cycles before each PCMFS
transition.
LEFT CHANNEL
RIGHT CHANNEL
PCMFS
PCMCLK
PCMADC/
PCMDAC
1/fs
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
LSB
MSB
Figure 8 Left Justified Audio Interface (assuming n-bit word length)
In Right Justified mode, the LSB is available on the last rising edge of PCMCLK before a PCMFS
transition. All other bits are transmitted before (MSB first). Depending on word length, PCMCLK
frequency and sample rate, there may be unused PCMCLK cycles after each PCMFS transition.



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