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WM1811A Datasheet(PDF) 43 Page - Wolfson Microelectronics plc

Part # WM1811A
Description  Multi-Channel Audio Hub CODEC for Smartphones
PDF  328 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM1811A Datasheet(HTML) 43 Page - Wolfson Microelectronics plc

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Production Data
WM1811A
w
PD, November 2013, Rev 4.1
43
The line input and voice CODEC input configurations are illustrated in Figure 11 through to Figure 14.
Figure 11 IN1LN or IN1RN as Line Inputs
Figure 12 IN2LN or IN2RN as Line Inputs
Figure 13 IN1LP or IN1RP as Line Inputs
Figure 14 IN2LP or IN2RP as Line Inputs
INPUT PGA ENABLE
The Input PGAs are enabled using register bits IN1L_ENA, IN2L_ENA, IN1R_ENA and IN2R_ENA,
as described in Table 2. The Input PGAs must be enabled for microphone input on the respective
input pins, or for line input on the inverting input pins IN1LN, IN1RN, IN2LN, IN2RN.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R2 (0002h)
Power
Management
(2)
7
IN2L_ENA
0
IN2L Input PGA Enable
0 = Disabled
1 = Enabled
6
IN1L_ENA
0
IN1L Input PGA Enable
0 = Disabled
1 = Enabled
5
IN2R_ENA
0
IN2R Input PGA Enable
0 = Disabled
1 = Enabled
4
IN1R_ENA
0
IN1R Input PGA Enable
0 = Disabled
1 = Enabled
Table 2 Input PGA Enable
For normal operation of the input PGAs, the reference voltage VMID and the bias current must also be
enabled. See “Reference Voltages and Master Bias” for details of the associated controls VMID_SEL
and BIAS_ENA.



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