WM8945 Datasheet, PDF (127/169 Pages) Wolfson Microelectronics plc – Mono Low-Power CODEC with Video Buffer and Touch Panel Controller

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