WM8941
Pre Production
DESCRIPTION
REGISTER
ADDRESS
BIT
LABEL
LIMEN
DEFAULT
R24
8
0
Enable the DAC digital limiter:
0=disabled
DAC digital
limiter control 1
1=enabled
7:4
3:0
6:4
LIMDCY
LIMATK
LIMLVL
0011
0010
000
Limiter Decay time (per 6dB gain change)
for 44.1kHz sampling. Note that these will
scale with sample rate:
0000=750us
0001=1.5ms
0010=3ms
0011=6ms
0100=12ms
0101=24ms
0110=48ms
0111=96ms
1000=192ms
1001=384ms
1010=768ms
1011 to 1111=1.536s
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
R25
Programmable signal threshold level
(determines level at which the limiter
starts to operate)
DAC digital
limiter control 2
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
PP, Rev 3.3, December 2007
46
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
