Pre-Production
WM8985
REGISTER
ADDRESS
BIT
LABEL
ADCVOLL
DEFAULT
DESCRIPTION
REFER TO
7:0
11111111
Left ADC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
Analogue to
Digital
Converter
(ADC)
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
16 (10h)
8
ADCVU
N/A
ADC left and ADC right volume do not update
until a 1 is written to ADCVU (in reg 16 or 17)
Analogue to
Digital
Converter
(ADC)
7:0
ADCVOLR
11111111
Right ADC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
Analogue to
Digital
Converter
(ADC)
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
18 (12h)
8
EQ3DMODE
EQ1C
1
0 = Equaliser and 3D Enhancement applied to
ADC path
Output Signal
Path
1 = Equaliser and 3D Enhancement applied to
DAC path
7
0
Reserved. Initialise to 0
EQ Band 1 Cut-off Frequency:
00=80Hz
6:5
01
Output Signal
Path
01=105Hz
10=135Hz
11=175Hz
4:0
8
EQ1G
01100
0
EQ Band 1 Gain Control. See Table 31 for
details.
Output Signal
Path
19 (13h)
20 (14h)
21 (15h)
EQ2BW
EQ Band 2 Bandwidth Control
0=narrow bandwidth
Output Signal
Path
1=wide bandwidth
7
0
Reserved. Initialise to 0
EQ Band 2 Centre Frequency:
6:5
EQ2C
01
Output Signal
Path
00=230Hz
01=300Hz
10=385Hz
11=500Hz
4:0
8
EQ2G
01100
0
EQ Band 2 Gain Control. See Table 31 for
details.
Output Signal
Path
EQ3BW
EQ Band 3 Bandwidth Control
0=narrow bandwidth
Output Signal
Path
1=wide bandwidth
7
0
Reserved. Initialise to 0
EQ Band 3 Centre Frequency:
6:5
EQ3C
01
Output Signal
Path
00=650Hz
01=850Hz
10=1.1kHz
11=1.4kHz
4:0
8
EQ3G
01100
0
EQ Band 3 Gain Control. See Table 31 for
details.
Output Signal
Path
EQ4BW
EQ Band 4 Bandwidth Control
0=narrow bandwidth
Output Signal
Path
1=wide bandwidth
7
0
Reserved. Initialise to 0
PP, Rev 3.4, October 2006
97
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
