wm9081 Wolfson Microelectronics plc, wm9081 Datasheet - Page 95

• Manufacturer Part Number: wm9081
• Description: Mono Dac With 2.6w Class Ab/d Speaker Driver, Dynamic Range Controller And Retune Mobile Parametric Equalizer
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
Register 20h DRC 1
w
REGISTER
REGISTER
ADDRESS
ADDRESS
R33 (21h)
DRC 2
15:12
11:8
BIT
BIT
7:6
5:4
3:2
1:0
1
DRC_MINGAIN
DRC_QR_DCY
DRC_DCY[3:0]
DRC_QR_THR
DRC_ANTICLI
DRC_ATK[3:0]
DRC_MAXGAI
LABEL
LABEL
N[1:0]
[1:0]
[1:0]
[1:0]
P
DEFAULT
DEFAULT
0100
0010
00
00
00
01
1
1 = Enabled
Anti-clip enable
0 = Disabled
1 = Enabled
Gain attack rate (seconds/6dB)
0000 = Reserved (181us)
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
DESCRIPTION
DESCRIPTION
PP, Rev 3.0, April 2009
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
REFER TO
REFER TO
WM9081
95