wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 83

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
26 (1Ah)
27 (1Bh)
28 (1Ch)
29 (1Dh)
30 (1Eh)
31(1Fh)
32 (20h)
33 (21h)
34 (22h)
35 (23h)
36 (24h)
REGISTER
ADDRESS
15:0
15:0
15:0
15:0
15:0
15:0
15:10 ALCGAIN[5:0]
9
8
7:6
5:3
2:0
15:8
7:4
3:0
15:9
8
7:4
3:0
15:4
3
2:0
15:8
7
6
5:4
BIT
ALCSEL
ALCMAX
ALCMIN
ALCHLD
ALCLVL
ALCMODE
ALCDCY
ALCATK
NGEN
NGTH
PLL_POWERD
OWN
FRACEN
PLLPRESCALE 00
LABEL
0000h
0000h
0000h
0000h
0000h
0000h
000000
0
0
00
111
000
000h
000
1011
00h
0
0011
0010
000h
0
000
00h
0
1
DEFAULT
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Readback from this register will return the ALC gain in
this position
Reserved
ALC function select
0=ALC disabled
1=ALC enabled
Reserved
Set Maximum Gain of PGA
Set minimum gain of PGA
Reserved
ALC hold time before gain is increased.
ALC threshold level. Sets the desired signal level.
Reserved
Determines the ALC mode of operation:
0=Normal mode
1=Limiter mode.
Decay (gain ramp-up) time
ALC attack (gain ramp-down) time
Reserved
1 = enable
0 = disable
Reserved
PLL POWER
0=On
1=Off
Fractional Divide within the PLL
0=Disabled (Lower Power)
1=Enabled
00 = MCLK input multiplied by 2 (default)
01 = MCLK input not divided
10 = Divide MCLK by 2 before input to PLL
11 = Divide MCLK by 4 before input to PLL
Noise gate function enable
Noise gate threshold
DESCRIPTION
PD, Rev 4.0, August 2008
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Automatic Level
Control (ALC)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Input Limiter /
REFER TO
WM8941
83