Production Data
WM8741
MUTEB
ZFLAG
ZDET
DINL
DINR
DAC
SOFT ANA
L&R
L&R
Infinite
Zero
DSD Direct
Detect
Figure 25 Software Control Mode MUTEB and ZFLAG Configuration
DE-EMPHASIS
Setting the DEEMPH[1:0] register bits enables de-emphasis support in the WM8741 digital filters.
There are three de-emphasis filters, one each for sampling rates of 32kHz, 44.1kHz and 48kHz.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
De-emphasis mode select:
00 = De-emphasis Off
R6
Filter Control
06h
[6:5] DEEMPH
[1:0]
00
01 = De-emphasis 32kHz
10 = De-emphasis 44.1kHz
11 = De-emphasis 48kHz
Table 34 De-emphasis Control
OUTPUT PHASE REVERSAL
The REV register bit controls the phase of the output signal. Setting the REV bit causes the phase of
the output signal to be inverted.
Note: The REV bit can only be used in stereo mode. When in differential mono mode, the REV bit
must remain set as 0.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Analogue output phase control:
0 = Normal
R5
Format Control
05h
6
REV
0
1 = Inverted
Table 35 Output Phase Control
PD, Rev 4.2, October 2009
35
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
