wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 20

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8982
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Figure 9 Microphone Input PGA Circuit
The input PGA is enabled by the IPPGAEN register bit.
Table 3 Input PGA Enable Register Settings
Table 4 Input PGA Control
R2
Power
Management
2
R44
Input
Control
REGISTER
ADDRESS
REGISTER
ADDRESS
0
1
2
BIT
2
BIT
MICP2INPPGA
MICN2INPPGA
LINE2INPPGA
LABEL
INPPGAEN
LABEL
1
1
0
DEFAULT
0
DEFAULT
Connect MICP pin to input PGA amplifier
positive terminal.
0 = MICP not connected to input PGA
1 = input PGA amplifier positive terminal
connected to MICP (constant input
impedance)
Connect MICN pin to input PGA negative
terminal.
0=MICN not connected to input PGA
1=MICN connected to input PGA amplifier
negative terminal.
Connect LINEIN pin to input PGA positive
terminal.
0=LINEIN not connected to input PGA
1=LINEIN connected to input PGA
amplifier positive terminal (constant input
impedance).
Input PGA enable:
0 = disabled
1 = enabled
DESCRIPTION
PP, Rev 3.2, September 2008
DESCRIPTION
Pre-Production
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