wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 19

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

Production Data
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Figure 6 Microphone Input PGA Circuit (switch positions shown are for differential mic
input)
Table 2 Input Control
R44
Input Control
REGISTER
ADDRESS
2
1
0
BIT
AUX2INPPGA
MICN2INPPGA
MICP2INPPGA
LABEL
0
1
0
DEFAULT
Select AUX amplifier output as input PGA
signal source.
0=AUX not connected to input PGA
1=AUX connected to input PGA amplifier
negative terminal.
Connect MICN to input PGA negative
terminal.
0=MICN not connected to input PGA
1=MICN connected to input PGA amplifier
negative terminal.
Connect input PGA amplifier positive
terminal to MICP or VMID.
0 = input PGA amplifier positive terminal
connected to VMID
1 = input PGA amplifier positive terminal
connected to MICP through variable resistor
string
DESCRIPTION
PD, Rev 4.0, August 2008
WM8941
19