WM8983GEFL/V Wolfson Microelectronics, WM8983GEFL/V Datasheet - Page 31

• Manufacturer Part Number: WM8983GEFL/V
• Description: Audio CODECs Mbl Multimedia CODEC w/ 1W Speaker Driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8983GEFL/V

• 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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The input PGAs are enabled by the INPPGAENL and INPPGAENR register bits.
Table 5 Input PGA Enable Register Settings
Table 6 Input PGA Control
INPUT PGA VOLUME CONTROLS
The input microphone PGAs have a gain range from -12dB to +35.25dB in 0.75dB steps. The gain
from the LIN/RIN input to the PGA output and from the L2/R2 amplifier to the PGA output are always
common and controlled by the register bits INPPGAVOLL/R[5:0]. These register bits also affect the
LIP pin when LIP2INPPGA=1, the L2 pin when L2_2INPPGA=1, the RIP pin when RIP2INPPGA=1
and the L2 pin when L2_2INPPGA=1.
When the Automatic Level Control (ALC) is enabled the input PGA gains are controlled automatically
and the INPPGAVOLL/R bits should not be used.
R2
Power
Management
2
R44
Input
Control
REGISTER
ADDRESS
REGISTER
ADDRESS
0
1
2
4
5
6
BIT
2
3
BIT
LIP2INPPGA
LIN2INPPGA
L2_2INPPGA
RIP2INPPGA
RIN2INPPGA
R2_2INPPGA
LABEL
INPPGAENL
INPPGAENR
LABEL
1
1
0
1
1
0
DEFAULT
0
0
DEFAULT
Connect LIP pin to left channel input PGA
amplifier positive terminal.
0 = LIP not connected to input PGA
1 = input PGA amplifier positive terminal
connected to LIP (constant input
impedance)
Connect LIN pin to left channel input PGA
negative terminal.
0 = LIN not connected to input PGA
1 = LIN connected to input PGA amplifier
negative terminal.
Connect L2 pin to left channel input PGA
positive terminal.
0 = L2 not connected to input PGA
1 = L2 connected to input PGA amplifier
positive terminal (constant input
impedance).
Connect RIP pin to right channel input
PGA amplifier positive terminal.
0 = RIP not connected to input PGA
1 = right channel input PGA amplifier
positive terminal connected to RIP
(constant input impedance)
Connect RIN pin to right channel input
PGA negative terminal.
0 = RIN not connected to input PGA
1 = RIN connected to right channel input
PGA amplifier negative terminal.
Connect R2 pin to right channel input PGA
positive terminal.
0 = R2 not connected to input PGA
1 = R2 connected to input PGA amplifier
positive terminal (constant input
impedance).
Left channel input PGA enable
0 = disabled
1 = enabled
Right channel input PGA enable
0 = disabled
1 = enabled
DESCRIPTION
DESCRIPTION
PD, Rev 4.3, May 2010
WM8983
31