WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 91

• 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.

Pre-Production
w
27 (1Bh)
28 (1Ch)
29 (1Dh)
30 (1Eh)
REGISTER
ADDRESS
6:4
3:0
8
7
6:0
8
7
6:0
8
7
6:0
8
7
6:0
BIT
LIMLVL
LIMBOOST
NFU
NFEN
NFA0[13:7]
NFU
NFA0[6:0]
NFU
NFA1[13:7]
NFU
NFA1[6:0]
LABEL
000
0
0000000
0
0000000
0
0000000
0
0000000
0000
0
0
0
0
DEFAULT
Programmable signal threshold level (determines
level at which the DAC limiter starts to operate)
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
DAC Limiter volume boost (can be used as a
stand alone volume boost when LIMEN=0):
0000=0dB
0001=+1dB
0010=+2dB
… (1dB steps)
1011=+11dB
1100=+12dB
1101 to 1111=reserved
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Notch filter enable:
0=Disabled
1=Enabled
Notch Filter a0 coefficient, bits [13:7]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Reserved
Notch Filter a0 coefficient, bits [6:0]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Reserved
Notch Filter a1 coefficient, bits [13:7]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Reserved
Notch Filter a1 coefficient, bits [6:0]
DESCRIPTION
PP Rev 3.0 April 2006
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)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
REFER TO
WM8976
91