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WM8980CGEFL/V Datasheet(PDF) 103 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) 103 Page - Wolfson Microelectronics plc

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Pre-Production
WM8980
w
PP, Rev 3.8, May 2012
103
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
3:0
LIMATK
0010
DAC Limiter Attack time (per 6dB gain change) for
44.1kHz sampling. Note that these will scale with
sample rate.
0000=94us
0001=188s
0010=375us
0011=750us
0100=1.5ms
0101=3ms
0110=6ms
0111=12ms
1000=24ms
1001=48ms
1010=96ms
1011 to 1111=192ms
Output Signal
Path
25 (19h)
8:7
00
Reserved
6:4
LIMLVL
000
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
Output Signal
Path
3:0
LIMBOOST
0000
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
Output Signal
Path
27 (1Bh)
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
NFEN
0
Notch filter enable:
0=Disabled
1=Enabled
Analogue to
Digital
Converter
(ADC)
6:0
NFA0[13:7]
0000000
Notch Filter a0 coefficient, bits [13:7]
Analogue to
Digital
Converter
(ADC)
28 (1Ch)
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
NFA0[6:0]
0000000
Notch Filter a0 coefficient, bits [6:0]
Analogue to
Digital
Converter
(ADC)



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