WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 90

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8978
w
27 (1Bh)
28 (1Ch)
29 (1Dh)
30 (1Eh)
32 (20h)
REGISTER
ADDRESS
8
7
6:0
8
7
6:0
8
7
6:0
8
7
6:0
8:7
6
5:3
BIT
NFU
NFEN
NFA0[13:7]
NFU
NFA0[6:0]
NFU
NFA1[13:7]
NFU
NFA1[6:0]
ALCSEL
ALCMAXGAIN
LABEL
0
0
0000000
0
0
0000000
0
0
0000000
0
0
0000000
00
0
111
DEFAULT
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]
ALC function select:
00=ALC off
01=ALC right only
10=ALC left only
11=ALC both on
Reserved
Set Maximum Gain of PGA
111=+35.25dB
110=+29.25dB
101=+23.25dB
100=+17.25dB
011=+11.25dB
010=+5.25dB
001=-0.75dB
000=-6.75dB
DESCRIPTION
PTD Rev 2.6 November 2005
Preliminary Technical Data
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)
Input Limiter/
Automatic
Level Control
(ALC)
Input Limiter/
Automatic
Level Control
(ALC)
REFER TO
90