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WM8352 Datasheet(PDF) 65 Page - Wolfson Microelectronics plc

Part # WM8352
Description  Wolfson AudioPlus™ Stereo CODEC with Power Management
PDF  336 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8352 Datasheet(HTML) 65 Page - Wolfson Microelectronics plc

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Production Data
WM8352
w
PD, February 2011, Rev 4.4
65
13.4.2
ENABLING THE PRE-AMPLIFIERS
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R9 (09h)
Power Mgmt
2
9
INR_ENA
0
Right input PGA enable
0 = disabled
1 = enabled
8
INL_ENA
0
Left input PGA enable
0 = disabled
1 = enabled
R80 (50h)
Left Input
Volume
15
INL_ENA
0
Left input PGA enable
0 = disabled
1 = enabled
R81 (51h)
Right Input
Volume
15
INR_ENA
0
Right input PGA enable
0 = disabled
1 = enabled
Note: These bits can be accessed through R9 or through R80/R81. Reading from or writing to either
register location has the same effect.
Table 20 Enabling the Microphone Pre-amplifiers
13.4.3
SELECTING INPUT SIGNALS
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R72 (48h)
Mic Input
Control
0
IN1LP_ENA
1
Connect IN1LP pin to left channel input PGA
amplifier positive terminal.
0 = IN1LP not connected to input PGA
1 = input PGA amplifier positive terminal
connected to IN1LP (constant input
impedance)
1
IN1LN_ENA
1
Connect IN1LN pin to left channel input PGA
negative terminal.
0 = IN1LN not connected to input PGA
1 = IN1LN connected to input PGA amplifier
negative terminal.
2
IN2L_ENA
0
Connect IN2L pin to left channel input PGA
amplifier
0 = IN2L not connected to input PGA amplifier
1 = IN2L connected to input PGA amplifier
8
IN1RP_ENA
1
Connect IN1RP pin to right channel input PGA
amplifier positive terminal.
0 = IN1RP not connected to input PGA
1 = right channel input PGA amplifier positive
terminal connected to IN1RP (constant input
impedance)
9
IN1RN_ENA
1
Connect IN1RN pin to right channel input PGA
negative terminal.
0 = IN1RN not connected to input PGA
1 = IN1RN connected to right channel input
PGA amplifier negative terminal.
10
IN2R_ENA
0
Connect IN2R pin to right channel input PGA
0 = IN2R not connected to input PGA amplifier
1 = IN2R connected to input PGA amplifier
Table 21 Selecting Input Pins for the Microphone Pre-amplifiers



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