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WM8980CGEFL/V Datasheet(PDF) 104 Page - Wolfson Microelectronics plc

Part # WM8980CGEFL/V
Description  Stereo CODEC with Speaker Driver and Video Buffer
PDF  123 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8980CGEFL/V Datasheet(HTML) 104 Page - Wolfson Microelectronics plc

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WM8980
Pre-Production
w
PP, Rev 3.8, May 2012
104
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
29 (1Dh)
8
NFU
0
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Analogue to
Digital
Converter
(ADC)
7
0
Reserved
6:0
NFA1[13:7]
0000000
Notch Filter a1 coefficient, bits [13:7]
Analogue to
Digital
Converter
(ADC)
30 (1Eh)
8
NFU
0
Notch filter update. The notch filter values used
internally only update when one of the NFU bits is
set high.
Analogue to
Digital
Converter
(ADC)
7
0
Reserved
6:0
NFA1[6:0]
0000000
Notch Filter a1 coefficient, bits [6:0]
Analogue to
Digital
Converter
(ADC)
32 (20h)
8:7
ALCSEL
00
ALC function select:
00=ALC off
01=ALC right only
10=ALC left only
11=ALC both on
Input Limiter/
Automatic
Level Control
(ALC)
6
0
Reserved
5:3
ALCMAXGAIN
111
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
Input Limiter/
Automatic
Level Control
(ALC)
2:0
ALCMINGAIN
000
Set minimum gain of PGA
000=-12dB
001=-6dB
010=0dB
011=+6dB
100=+12dB
101=+18dB
110=+24dB
111=+30dB
Input Limiter/
Automatic
Level Control
(ALC)
33 (21h)
8
ALCZC
0
ALC Zero Cross Control
0 = ALCZC off
1 = ALCZC on (only valid when ALCMODE=0.
ALCZC should not be used when ALCMODE=1)
Input Limiter/
Automatic
Level Control
(ALC)
7:4
ALCHLD
0000
ALC hold time before gain is increased.
0000 = 0ms
0001 = 2.67ms
0010 = 5.33ms
… (time doubles with every step)
1010 or higher = 1.36s
Input Limiter/
Automatic
Level Control
(ALC)



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