WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 88

• Manufacturer Part Number: WM8976
• Description: The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8976
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11 (0Bh)
12 (0Ch)
13 (0Dh)
14 (0Eh)
REGISTER
ADDRESS
3
2
1
0
8
7:0
8
7:0
8
7:4
3:0
8
7
6:4
BIT
DACOSR128
AMUTE
DACPOLR
DACPOLL
DACVU
DACVOLL
DACVU
DACVOLR
JD_EN1
JD_EN0
HPFEN
HPFAPP
HPFCUT
LABEL
0
0
N/A
11111111
N/A
11111111
0000
0000
1
0
000
0
0
0
DEFAULT
DAC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
Automute enable
0 = Amute disabled
1 = Amute enabled
Right DAC output polarity:
0 = non-inverted
1 = inverted (180 degrees phase shift)
Left DAC output polarity:
0 = non-inverted
1 = inverted (180 degrees phase shift)
DAC left and DAC right volume do not update until
a 1 is written to DACVU (in reg 11 or 12)
Left DAC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
DAC left and DAC right volume do not update until
a 1 is written to DACVU (in reg 11 or 12)
Right DAC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
Reserved
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
1=Application mode (2
Application mode cut-off frequency
See Table 14 for details.
st
DESCRIPTION
order, fc = ~3.7Hz)
nd
order, fc = HPFCUT)
PP Rev 3.0 April 2006
Power
Management
Output Signal
Path
Output Signal
Path
Output Signal
Path
Digital to
Analogue
Converter
(DAC)
Digital to
Analogue
Converter
(DAC)
Output Signal
Path
Output Signal
Path
Output
Switching
(Jack Detect)
Output
Switching
(Jack Detect)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
REFER TO
Pre-Production
88