WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 31

• Manufacturer Part Number: WM8985GEFL
• Description: Audio CODECs Multimedia CODEC with Class D HP
• Manufacturer: Wolfson Microelectronics

Specifications of WM8985GEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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Table 7 Input PGA Volume Control
R45 (20h)
Left channel
input PGA
volume
control
R46 (2Eh)
Right
channel
input PGA
volume
control
R32 (20h)
ALC control
1
REGISTER
ADDRESS
5:0
6
7
8
5:0
6
7
8
8:7
BIT
INPPGAVOLL
INPPGAMUTEL
INPPGAZCL
INPPGAVU
INPPGAVOLR
INPPGAMUTER
INPPGAZCR
INPPGAVU
ALCSEL
LABEL
010000
(0dB)
0
0
Not
latched
010000
(0dB)
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.
INPPGA left and INPPGA right volume
do not update until a 1 is written to
INPPGAVU (in reg 45 or 46)
(See "Volume Updates" below)
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.
INPPGA left and INPPGA right volume
do not update until a 1 is written to
INPPGAVU (in reg 45 or 46)
(See "Volume Updates" below)
ALC function select:
00 = ALC off
01 = ALC right only
10 = ALC left only
11 = ALC both on
DESCRIPTION
PD, Rev 4.6, July 2009
st
st
zero cross after
zero cross after
WM8985
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