WM8900LGEFK/RV Wolfson Microelectronics, WM8900LGEFK/RV Datasheet - Page 34

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WM8900LGEFK/RV

Manufacturer Part Number
WM8900LGEFK/RV
Description
Audio CODECs Ultra Low Power Hi-Fi CODEC
Manufacturer
Wolfson Microelectronics
Datasheet

Specifications of WM8900LGEFK/RV

Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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WM8900
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Table 10 Input PGA and Boost Mixer Enable Register Settings
INPUT PGA CONFIGURATION
The input PGAs are configured by the input signal path control registers, as described in Table 11.
The input PGA is connected to the ADC signal path under the control of the ADC signal path input
register.
Table 11 Input PGA Control
R2 (02h)
Power
Management
2
R26 (1Ah)
ADC Signal
Path
R21 (15h)
Input Control
R26 (1Ah)
ADC Signal
Path
R21 (15h)
Input Control
REGISTER
ADDRESS
REGISTER
ADDRESS
BIT
BIT
5
4
3
2
6
6
5
4
2
2
1
0
MIXINL_ENA
MIXINR_ENA
INL_ENA
INR_ENA
INL_TO_MIXINL
IN1L_ENA
IN2L_ENA
IN3L_ENA
INR_TO_MIXINR
IN1R_ENA
IN2R_ENA
IN3R_ENA
LABEL
LABEL
0
0
0
0
DEFAULT
0
1
0
0
0
1
0
0
DEFAUL
T
Left channel input boost enable
0 = Boost disabled
1 = Boost enabled
Right channel input boost enable
0 = Boost disabled
1 = Boost enabled
Left channel input PGA enable
0 = PGA disabled
1 = PGA enabled (if MIXINL_ENA = 1)
Right channel input PGA enable
0 = PGA disabled
1 = PGA enabled (if MIXINR_ENA = 1)
Connect Left Input PGA to Left Input
Boost mixer
0 = Not connected
1 = Connected
Connect LINPUT1 to inverting input
of Left Input PGA
0 = LINPUT1 not connected to PGA
1 = LINPUT1 connected to PGA
Connect LINPUT2 to non-inverting
input of Left Input PGA
0 = LINPUT2 not connected to PGA
1 = LINPUT2 connected to PGA
Connect LINPUT3 to non-inverting
input of Left Input PGA
0 = LINPUT3 not connected to PGA
1 = LINPUT3 connected to PGA
Connect Right Input PGA to Right
Input Boost mixer
0 = Not connected
1 = Connected
Connect RINPUT1 to inverting input
of Right Input PGA
0 = RINPUT1 not connected to PGA
1 = RINPUT1 connected to PGA
Connect RINPUT2 to non-inverting
input of Right Input PGA
0 = RINPUT2 not connected to PGA
1 = RINPUT2 connected to PGA
Connect RINPUT3 to non-inverting
input of Right Input PGA
0 = RINPUT3 not connected to PGA
1 = RINPUT3 connected to PGA
PD, August 2008, Rev 4.0
DESCRIPTION
DESCRIPTION
Production Data
34

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