wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 80

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8941
w
9 (09h)
10 (0Ah)
11 (0Bh)
12 (0Ch)
13 (0Dh)
14 (0Eh)
15 (0Fh)
16 (10h)
REGISTER
ADDRESS
15:2
1
0
15:7
6
5:3
2
1
0
15:8
7:0
15:0
15:0
15:9
8
7
6:4
3:1
0
15:8
7:0
15
14
BIT
AUTOINC
DACMU
AMUTE
DACPOL
DACVOL
HPFEN
HPFAPP
HPFCUT
ADCPOL
ADCVOL
NF0_UP
NF0_EN
LABEL
1
0
00
0
00
0
0
0
00h
11111111
00h
1
0
000
00
0
00h
11111111
0
0
DEFAULT
High Pass Filter Enable
0=disabled
1=enabled
See Table 14 for details.
Reserved
Auto-Incremental write enable
0=Auto-Incremental writes disabled
1=Auto-Incremental writes enabled
Reserved
Reserved
DAC soft mute enable
0 = DACMU disabled
1 = DACMU enabled
Reserved
DAC auto mute enable
0 = auto mute disabled
1 = auto mute enabled
Reserved
DAC Polarity Invert
0 = No inversion
1 = DAC output inverted
Reserved
DAC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
Reserved
Reserved
Reserved
Select audio mode or application mode
0=Audio mode (1
1=Application mode (2
Application mode cut-off frequency
Reserved
ADC Polarity
0=normal
1=inverted
Reserved
ADC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
Notch filter 0 update. The notch filter 0 values used
internally only update when one of the NF0_UP bits is
set high.
Notch filter 0 enable:
0=Disabled
1=Enabled
st
order, fc = ~3.7Hz)
DESCRIPTION
nd
order, fc = HPFCUT)
PD, Rev 4.0, August 2008
Control Interface
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
Analogue to
Digital Converter
(ADC)
REFER TO
Production Data
80