WM8904
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
Compressor slope (upper region)
000 = 1 (no compression)
001 = 1/2
Dynamic Range
Control (DRC)
R42 (2Ah)
DRC 2
5:3
DRC_HI_COM
P [2:0]
000
010 = 1/4
011 = 1/8
100 = 1/16
101 = 0
110 to 111 = Reserved
Compressor slope (lower region)
000 = 1 (no compression)
001 = 1/2
Dynamic Range
Control (DRC)
2:0
DRC_LO_COM
P [2:0]
000
010 = 1/4
011 = 1/8
100 = 0
101 to 111 = Reserved
Register 2Ah DRC 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
Input signal at the Compressor 'knee'.
000000 = 0dB
Dynamic Range
Control (DRC)
R43 (2Bh)
DRC 3
10:5
DRC_KNEE_IP 00_0000
[5:0]
000001 = -0.75dB
000010 = -1.5dB
… (-0.75dB steps)
111100 = -45dB
111101 to 111111 = Reserved
Output signal at the Compressor 'knee'.
00000 = 0dB
Dynamic Range
Control (DRC)
4:0
DRC_KNEE_O
P [4:0]
0_0000
00001 = -0.75dB
00010 = -1.5dB
… (-0.75dB steps)
11110 = -22.5dB
11111 = Reserved
Register 2Bh DRC 3
PP, Rev 3.3, September 2012
154
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
