WM8980CGEFL/RV WOLFSON [Wolfson Microelectronics plc], WM8980CGEFL/RV Datasheet - Page 25

• Manufacturer Part Number: WM8980CGEFL/RV
• Description: Stereo CODEC with Speaker Driver and Video Buffer
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Pre-Production
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Table 6 Input PGA Volume Control
R45
Left channel
input PGA
volume
control
R46
Right
channel
input PGA
volume
control
R32
ALC control
1
REGISTER
ADDRESS
5:0
6
7
8
5:0
6
7
8
8:7
BIT
INPPGAVOLL
INPPGAMUTEL
INPPGAZCL
INPPGAUPDATE
INPPGAVOLR
INPPGAMUTER
INPPGAZCR
INPPGAUPDATE
ALCSEL
LABEL
010000
0
0
Not
latched
010000
0
0
Not
latched
00
DEFAULT
Left channel input PGA volume
000000 = -12dB
000001 = -11.25db
.
010000 = 0dB
.
111111 = 35.25dB
Mute control for left channel input PGA:
0=Input PGA not muted, normal
operation
1=Input PGA muted (and disconnected
from the following input BOOST stage).
Left channel input PGA zero cross
enable:
0=Update gain when gain register
changes
1=Update gain on 1
gain register write.
INPPGAVOLL and INPPGAVOLR
volume do not update until a 1 is written
to INPPGAUPDATE (in reg 45 or 46)
Right channel input PGA volume
000000 = -12dB
000001 = -11.25db
.
010000 = 0dB
.
111111 = +35.25dB
Mute control for right channel input PGA:
0=Input PGA not muted, normal
operation
1=Input PGA muted (and disconnected
from the following input BOOST stage).
Right channel input PGA zero cross
enable:
0=Update gain when gain register
changes
1=Update gain on 1
gain register write.
INPPGAVOLL and INPPGAVOLR
volume do not update until a 1 is written
to INPPGAUPDATE (in reg 45 or 46)
ALC function select:
00=ALC off
01=ALC right only
10=ALC left only
11=ALC both on
DESCRIPTION
PP, Rev 3.8, May 2012
st
st
zero cross after
zero cross after
WM8980
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