WM9081 Datasheet, PDF (88/103 Pages) Cirrus Logic – Mono DAC with 2.6W Class AB/D Speaker Driver, Dynamic Range Controller and ReTune™ Mobile Parametric Equalizer

WM9081
REGISTER BIT
ADDRESS
11:8
7:6
5:4
3:2
1:0
Register 21h DRC 2
LABEL
DEFAULT
DESCRIPTION
REFER TO
DRC_DCY[3:0]
DRC_QR_THR[
1:0]
DRC_QR_DCY[
1:0]
DRC_MINGAIN[
1:0]
DRC_MAXGAIN
[1:0]
0010
00
00
00
01
0001 = 181us
0010 = 363us
0011 = 726us
0100 = 1.45ms (default)
0101 = 2.9ms
0110 = 5.8ms
0111 = 11.6ms
1000 = 23.2ms
1001 = 46.4ms
1010 = 92.8ms
1011 = 185.6ms
1100-1111 = Reserved
Gain decay rate (seconds/6dB)
0000 = 186ms
0001 = 372ms
0010 = 743ms (default)
0011 = 1.49s
0100 = 2.97s
0101 = 5.94s
0110 = 11.89s
0111 = 23.78s
1000 = 47.56s
1001-1111 = Reserved
Quick release crest factor threshold
00 = 12dB (default)
01 = 18dB
10 = 24dB
11 = 30dB
Quick release decay rate (seconds/6dB)
00 = 0.725ms (default)
01 = 1.45ms
10 = 5.8ms
11 = Reserved
Minimum gain the DRC can use to attenuate audio signals
00 = 0dB (default)
01 = -6dB
10 = -12dB
11 = -18dB
Maximum gain the DRC can use to boost audio signals
00 = 12dB
01 = 18dB (default)
10 = 24dB
11 = 36dB
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
REGISTER
ADDRESS
R34 (22h)
DRC 3
BIT
LABEL
DEFAULT
DESCRIPTION
5:3 DRC_HI_COMP[
000
Compressor slope (upper region)
2:0]
000 = 1 (no compression)
001 = 1/2
010 = 1/4
88
REFER TO
Dynamic
Range
Controller
(DRC)
Rev 4.0