WM8958 Datasheet, PDF (83/377 Pages) Wolfson Microelectronics plc – Multi-Channel Audio Hub CODEC for Smartphones

Pre-Production
WM8958
REGISTER
ADDRESS
R1104 (0450h)
AIF1 DRC2 (1)
R1105 (0451h)
AIF1 DRC2 (2)
BIT
8
5
4
3
12:9
8:5
4:2
LABEL
DEFAULT
DESCRIPTION
AIF1DRC2_NG_
0
ENA
AIF1DRC2_KNE
0
E2_OP_ENA
AIF1DRC2_QR
1
AIF1DRC2_ANTI
1
CLIP
AIF1DRC2_ATK
[3:0]
0100
AIF1DRC2_DCY
[3:0]
0010
AIF1DRC2_MIN
001
GAIN [2:0]
AIF1 DRC2 Noise Gate Enable
0 = Disabled
1 = Enabled
AIF1 DRC2 KNEE2_OP Enable
0 = Disabled
1 = Enabled
AIF1 DRC2 Quick-release Enable
0 = Disabled
1 = Enabled
AIF1 DRC2 Anti-clip Enable
0 = Disabled
1 = Enabled
AIF1 DRC2 Gain attack rate
(seconds/6dB)
0000 = Reserved
0001 = 181us
0010 = 363us
0011 = 726us
0100 = 1.45ms
0101 = 2.9ms
0110 = 5.8ms
0111 = 11.6ms
1000 = 23.2ms
1001 = 46.4ms
1010 = 92.8ms
1011 = 185.6ms
1100-1111 = Reserved
AIF1 DRC2 Gain decay rate
(seconds/6dB)
0000 = 186ms
0001 = 372ms
0010 = 743ms
0011 = 1.49s
0100 = 2.97s
0101 = 5.94s
0110 = 11.89s
0111 = 23.78s
1000 = 47.56s
1001-1111 = Reserved
AIF1 DRC2 Minimum gain to
attenuate audio signals
000 = 0dB
001 = -12dB (default)
010 = -18dB
011 = -24dB
100 = -36dB
101 = Reserved
11X = Reserved
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PP, August 2012, Rev 3.4
83