WM8983_10 Datasheet, PDF (62/124 Pages) Wolfson Microelectronics plc – Mobile Multimedia CODEC with 1W Speaker Driver

WM8983
REGISTER
ADDRESS
R21
EQ Band 4
Control
BIT
LABEL
4:0 EQ4G
6:5 EQ4C
8
EQ4BW
Table 36 EQ Band 4 Control
DEFAULT
Production Data
DESCRIPTION
01100
(0dB)
01
0
Band 4 Gain Control. See Table 38 for
details
Band 4 Centre Frequency:
00 = 1.8kHz
01 = 2.4kHz
10 = 3.2kHz
11 = 4.1kHz
Band 4 Bandwidth Control
0 = narrow bandwidth
1 = wide bandwidth
REGISTER
ADDRESS
R22
EQ Band 5
Gain Control
BIT
LABEL
4:0 EQ5G
6:5 EQ5C
Table 37 EQ Band 5 Control
DEFAULT
DESCRIPTION
01100
(0dB)
01
Band 5 Gain Control. See Table 38 for
details.
Band 5 Cut-off Frequency:
00 = 5.3kHz
01 = 6.9kHz
10 = 9kHz
11 = 11.7kHz
GAIN REGISTER
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
11000
11001 to 11111
Table 38 Gain Register Table
GAIN
+12dB
+11dB
+10dB
+9dB
+8dB
+7dB
+6dB
+5dB
+4dB
+3dB
+2dB
+1dB
0dB
-1dB
-12dB
Reserved
See also Figure 60 to Figure 77 for equaliser and high pass filter responses.
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PD, Rev 4.3, May 2010
62