WM8976_11 Datasheet, PDF (92/114 Pages) Wolfson Microelectronics plc – Stereo CODEC with Speaker Driver

WM8976
REGISTER BIT
LABEL
ADDRESS
7:4 JD_EN1
3:0 JD_EN0
14 (0Eh)
8
HPFEN
7
HPFAPP
6:4 HPFCUT
3
ADCOSR
128
2:1
0
ADCLPOL
15 (0Fh)
8
ADCVU
7:0 ADCVOLL
16 (10h)
18 (12h)
8:0
8
EQ3DMODE
7
6:5 EQ1C
4:0 EQ1G
DEFAULT
DESCRIPTION
Production Data
REFER TO
0000
0000
1
0
000
0
00
0
N/A
11111111
11111111
1
0
01100
Output enabled when selected jack detection input
is logic 1
[4]= OUT1_EN_1
[5]= OUT2_EN_1
[6]= OUT3_EN_1
[7]= OUT4_EN_1
Output enabled when selected jack detection input
is logic 0.
[0]= OUT1_EN_0
[1]= OUT2_EN_0
[2]= OUT3_EN_0
[3]= OUT4_EN_0
High Pass Filter Enable
0=disabled
1=enabled
Select audio mode or application mode
0=Audio mode (1^st order, fc = ~3.7Hz)
1=Application mode (2^nd order, fc = HPFCUT)
Application mode cut-off frequency
See Table 15 for details.
ADC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
Reserved
ADC polarity adjust:
0=normal
1=inverted
ADC volume does not update until a 1 is written to
ADCVU
ADC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
Reserved
0 = Equaliser and 3D Enhancement applied to
ADC path
1 = Equaliser and 3D Enhancement applied to
DAC path
Reserved
EQ Band 1 Cut-off Frequency:
00=80Hz
01=105Hz
10=135Hz
11=175Hz
EQ Band 1 Gain Control. See Table 37 for details.
Output
Switching
(Jack Detect)
Output
Switching
(Jack Detect)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Power
Management
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Output Signal
Path
Output Signal
Path
Output Signal
Path
w
PD, Rev 4.5, November 2011
92