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WM8980CGEFL/V Datasheet(PDF) 105 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) 105 Page - Wolfson Microelectronics plc

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Pre-Production
WM8980
w
PP, Rev 3.8, May 2012
105
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
3:0
ALCLVL
1011
ALC target – sets signal level at ADC input
1111 : -1.5dBFS
1110 : -1.5dBFS
1101 : -3dBFS
1100 : -4.5dBFS
...... (-1.5dB steps)
0001 : -21dBFS
0000 : -22.5dBFS
Input Limiter/
Automatic
Level Control
(ALC)
34 (22h)
8
ALCMODE
0
Determines the ALC mode of operation:
0=ALC mode
1=Limiter mode
Input Limiter/
Automatic
Level Control
(ALC)
7:4
ALCDCY
[3:0]
0011
Decay (gain ramp-up) time
(ALCMODE ==0)
Input Limiter/
Automatic
Level Control
(ALC)
Per step
Per 6dB
90% of
range
0000
410us
3.28ms
23.6ms
0001
820us
6.56ms
47.2ms
0010
1.64ms
13.1ms
94.5ms
… (time doubles with every step)
1010 or
higher
420ms
3.36s
24.2s
0011
Decay (gain ramp-up) time
(ALCMODE ==1)
Per step
Per 6dB
90% of
range
0000
90.8us
726us
5.23ms
0001
182us
1.45ms
10.5ms
0010
363us
2.91ms
20.9ms
… (time doubles with every step)
1010
93ms
744ms
5.39s
3:0
ALCATK
0010
ALC attack (gain ramp-down) time
(ALCMODE == 0)
Input Limiter/
Automatic
Level Control
(ALC)
Per step
Per 6dB
90% of
range
0000
104us
832us
6ms
0001
208us
1.66ms
12ms
0010
416us
3.33ms
24ms
… (time doubles with every step)
1010 or
higher
106ms
852ms
6.13s
0010
ALC attack (gain ramp-down) time
(ALCMODE == 1)
Per step
Per 6dB
90% of
range
0000
22.7us
182us
1.31ms
0001
45.4us
363us
2.62ms
0010
90.8us
726us
5.23ms
… (time doubles with every step)
1010
23.2ms
186ms
1.34s
35 (23h)
8:4
00000
Reserved



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