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WM8941 Datasheet(PDF) 60 Page - Wolfson Microelectronics plc

Part # WM8941
Description  Mono CODEC with Speaker Driver and Video Buffer
PDF  96 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8941 Datasheet(HTML) 60 Page - Wolfson Microelectronics plc

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WM8941
Pre Production
w
PP, Rev 3.3, December 2007
60
Figure 36 DSP/PCM Mode Audio Interface (Mode A, FRAMEP=0)
LEFT CHANNEL
RIGHT CHANNEL
LRC
BCLK
DACDAT /
ADCDAT
n
3
2
1
n-2 n-1
LSB
MSB
n
3
2
1
n-2 n-1
1 BCLK
Input Word Length (WL)
1/fs
falling edge can occur anywhere in this area
1 BCLK
Figure 37 DSP/PCM Mode Audio Interface (Mode B, FRAMEP=1)
AUDIO INTERFACE CONTROL
The register bits controlling audio format, word length and master / slave mode are summarised
below.
Register bit MS selects audio interface operation in master or slave mode. In Master mode BCLK,
and FRAME are outputs. The frequency of BCLK and FRAME in master mode are controlled with
BCLKDIV. These are divided down versions of master clock. This may result in short BCLK pulses
at the end of a frame if there is a non-integer ratio of BCLKs to FRAME clocks.



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