WM8985
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
EQ4C
DEFAULT
01
DESCRIPTION
REFER TO
6:5
EQ Band 4 Centre Frequency:
00=1.8kHz
Output Signal
Path
01=2.4kHz
10=3.2kHz
11=4.1kHz
4:0
8:7
6:5
EQ4G
EQ5C
01100
0
EQ Band 4 Gain Control. See Table 31 for
details.
Output Signal
Path
22 (16h)
Reserved. Initialise to 0
Output Signal
Path
01
EQ Band 5 Cut-off Frequency:
00=5.3kHz
Output Signal
Path
01=6.9kHz
10=9kHz
11=11.7kHz
4:0
8
EQ5G
01100
0
EQ Band 5 Gain Control. See Table 31 for
details.
Output Signal
Path
23 (17h)
24 (18h)
CLASSDEN
Enable signal for class D mode on LOUT2 and
ROUT2
Class D
Control
0 = Class AB mode
1 = Class D mode
7:0
8
000 0000
0
Reserved. Initialise to 0
LIMEN
Output Signal
Path
Enable the DAC digital limiter:
0=disabled
1=enabled
7:4
LIMDCY
0011
Output Signal
Path
DAC Limiter Decay time (per 6dB gain change)
for 44.1kHz sampling. Note that these will scale
with sample rate:
0000=750us
0001=1.5ms
0010=3ms
0011=6ms
0100=12ms
0101=24ms
0110=48ms
0111=96ms
1000=192ms
1001=384ms
1010=768ms
3:0
LIMATK
0010
DAC Limiter Attack time (per 6dB gain change)
for 44.1kHz sampling. Note that these will scale
with sample rate.
Output Signal
Path
0000=94us
0001=188s
0010=375us
0011=750us
0100=1.5ms
0101=3ms
0110=6ms
0111=12ms
1000=24ms
1001=48ms
1010=96ms
1011 to 1111=192ms
PP, Rev 3.4, October 2006
98
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
