WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 98

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8985
w
22 (16h)
23 (17h)
24 (18h)
REGISTER
ADDRESS
6:5
4:0
8:7
6:5
4:0
8
7:0
8
7:4
3:0
BIT
EQ4C
EQ4G
EQ5C
EQ5G
CLASSDEN
LIMEN
LIMDCY
LIMATK
LABEL
01
01100
0
01
01100
0
000 1000
0
0011
0010
DEFAULT
EQ Band 4 Centre Frequency:
00=1.8kHz
01=2.4kHz
10=3.2kHz
11=4.1kHz
EQ Band 4 Gain Control. See Table 31 for
details.
Reserved. Initialise to 0
EQ Band 5 Cut-off Frequency:
00=5.3kHz
01=6.9kHz
10=9kHz
11=11.7kHz
EQ Band 5 Gain Control. See Table 31 for
details.
Enable signal for class D mode on LOUT2 and
ROUT2
0 = Class AB mode
1 = Class D mode
Reserved.
Enable the DAC digital limiter:
0=disabled
1=enabled
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
DAC Limiter Attack time (per 6dB gain change)
for 44.1kHz sampling. Note that these will scale
with sample rate.
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
DESCRIPTION
PP, Rev 3.5, March 2007
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
Class D
Control
Output Signal
Path
Output Signal
Path
Output Signal
Path
Pre-Production
REFER TO
98