wm8940gefl-v Wolfson Microelectronics plc, wm8940gefl-v Datasheet - Page 44

• Manufacturer Part Number: wm8940gefl-v
• Description: Mono Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

WM8940
w
R24
DAC digital
limiter control 1
R25
DAC digital
limiter control 2
REGISTER
ADDRESS
8
7:4
3:0
6:4
BIT
LIMEN
LIMDCY
LIMATK
LIMLVL
LABEL
0
0011
0010
000
DEFAULT
Enable the DAC digital limiter:
0=disabled
1=enabled
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
1011 to 1111=1.536s
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
Programmable signal threshold level
(determines level at which the limiter
starts to operate)
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
DESCRIPTION
PD, Rev 4.2, April 2008
Production Data
44