wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 131
wm8903
Manufacturer Part Number
wm8903
Description
Ultra Low Power Codec For Portable Audio Applications
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8903.pdf
(158 pages)
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Pre-Production
R42 (2Ah)
DRC 2
Register 2Ah DRC 2
R43 (2Bh)
DRC 3
Register 2Bh DRC 3
w
REGISTER
REGISTER
ADDRESS
ADDRESS
10:5
BIT
5:3
2:0
BIT
4:0
DRC_R0_SLOPE_COMP[2:0]
DRC_R1_SLOPE_COMP[2:0]
DRC_THRESH_COMP[5:0]
DRC_AMP_COMP[4:0]
LABEL
LABEL
DEFAULT
00_0000
0_0000
DEFAULT
100
000
Compressor threshold T (dB)
000000 = 0dB
000001 = -0.75dB
000010 = -1.5dB
… (-0.75dB steps)
111100 = -45dB
111101 = Reserved
11111X = Reserved
Compressor amplitude at threshold YT (dB)
00000 = 0dB
00001 = -0.75dB
00010 = -1.5dB
… (-0.75dB steps)
11110 = -22.5dB
11111 = Reserved
Compressor slope R0
000 = 1 (no compression)
001 = 1/2
010 = 1/4
011 = 1/8
100 = 1/16
101 = 0
110 = Reserved
111 = Reserved
Compressor slope R1
000 = 1 (no compression)
001 = 1/2
010 = 1/4
011 = 1/8
100 = 0
101 = Reserved
11X = Reserved
DESCRIPTION
DESCRIPTION
PP, Rev 3.1, August 2009
WM8903
131