Production Data
WM8945
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
DAC Volume Update
REFER TO
R23 (17h)
Left DAC
digital Vol
12
DAC_VU
0
Writing a 1 to this bit enables the Left DAC volume to
be updated
Left DAC Digital Mute
0 = Disable Mute
1 = Enable Mute
8
DACL_MUTE
0
7:0
DACL_VOL
[7:0]
1100_0000 Left DAC Digital Volume
0000_0000 = mute
0000_0001 = -71.625dB
0000_0010 = -71.250dB
…
1100_0000 = 0dB
...
1111_1111 = +23.625dB
Register 17h Left DAC digital Vol
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
ADC Digital Mute for All Channels
0 = Disable Mute
R25 (19h)
ADC Control
1
8
ADC_MUTEAL
L
1
1 = Enable Mute on all channels
Left ADC Invert
0
ADCL_DATINV
0
0 = Left ADC output not inverted
1 = Left ADC output inverted
Register 19h ADC Control 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
High pass filter configuration.
00 = 1st order HPF
Table 11
R26 (1Ah)
ADC Control
2
2:1
ADC_HPF_CU
T[1:0]
00
(fc=4Hz at fs=48kHz)
01 = 2nd order HPF
(fc=122Hz at fs=48kHz)
10 = 2nd order HPF
(fc=153Hz at fs=48kHz)
11 = 2nd order HPF
(fc=196Hz at fs=48kHz)
ADC Digital High Pass Filter Enable
0 = Disabled
0
ADC_HPF
0
1 = Enabled
Register 1Ah ADC Control 2
PD, May 2011, Rev 4.1
127
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
