Cirrus Logic WM8940 Manual page 75

REGISTER BIT LABEL
ADDRESS
24 (18h) 7:4 LIMDCY
3:0 LIMATK
25 (19h) 15:7
6:4 LIMLVL
3:0 LIMBOOST
26 (1Ah) 15:0
27 (1Bh) 15:0
28 (1Ch) 15:0
29 (1Dh) 15:0
30 (1Eh) 15:0
Rev 4.4
DEFAULT
0011
DAC 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
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
000h Reserved
000
DAC Limiter Programmable signal threshold level
(determines level at which the limiter starts to operate)
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
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
0000h
Reserved
0000h Reserved
0000h Reserved
0000h Reserved
0000h Reserved
DESCRIPTION
WM8940
REFER TO
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
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