WM8985
Pre-Production
DESCRIPTION
REGISTER
ADDRESS
BIT
LABEL
EQ3G
DEFAULT
R20 (14h)
EQ Band 3
Control
4:0
01100
(0dB)
01
Band 3 Gain Control. See Table 31 for
details.
6:5
EQ3C
Band 3 Centre Frequency:
00 = 650Hz
01 = 850Hz
10 = 1.1kHz
11 = 1.4kHz
8
EQ3BW
0
Band 3 Bandwidth Control
0 = narrow bandwidth
1 = wide bandwidth
Table 28 EQ Band 3 Control
REGISTER
ADDRESS
BIT
LABEL
EQ4G
DEFAULT
DESCRIPTION
R21 (15h)
EQ Band 4
Control
4:0
01100
(0dB)
01
Band 4 Gain Control. See Table 31 for
details
6:5
EQ4C
Band 4 Centre Frequency:
00 = 1.8kHz
01 = 2.4kHz
10 = 3.2kHz
11 = 4.1kHz
8
EQ4BW
0
Band 4 Bandwidth Control
0 = narrow bandwidth
1 = wide bandwidth
Table 29 EQ Band 4 Control
REGISTER
ADDRESS
BIT
LABEL
EQ5G
EQ5C
DEFAULT
DESCRIPTION
R22 (16h)
4:0
01100
(0dB)
01
Band 5 Gain Control. See Table 31 for
details.
EQ Band 5
Gain Control
6:5
Band 5 Cut-off Frequency:
00 = 5.3kHz
01 = 6.9kHz
10 = 9kHz
11 = 11.7kHz
Table 30 EQ Band 5 Control
GAIN REGISTER
GAIN
+12dB
+11dB
+10dB
00000
00001
00010
…. (1dB steps)
01100
0dB
-1dB
01101
11000
-12dB
11001 to 11111
Table 31 Gain Register Table
Reserved
See also Figure 46 to Figure 63 for equaliser and high pass filter filter responses.
PP, Rev 3.4, October 2006
w
60
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
