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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
When call connected, the object is moved nearer to the proximity sensor.
LCD backlight and Touch screen is disable operation automatically.
U102 : GP2AP002S00F is Optical proximity sensor.
3. Technical Brief
3.9 Proximity Sensor
Figure. Proximity Sensor Schematic
Figure. Proximity Sensor Block Diagram
PMIC(U400)
VREG_GP3
(2.7V)
GPIO124 : PROXI_OUT
MSM7227(U300)
GPIO123 : PROXI_SDA
GPIO122 : PRGXI_SCL
0.1u
C301
2.2u
C302
4.7K
R308
4.7K
R309
VREG_SENSOR_2.6V
VREG_SENSOR_2.6V
R310
4.7
10u
C304
U300
5
4
6
3
7
2
8
1
A
D
EL
L
C
S
C
D
EL
A
D
S
C
C
V
OI
V
T
U
O
V
D
N
G
10
R311
VREG_SENSOR_2.6V
VREG_SENSOR_2.6V
1u
C305
PROXI_I2C_SCL
PROXI_I2C_SDA
PROXI_OUT
When call connected, the object is moved nearer to the proximity sensor.
LCD backlight and Touch screen is disable operation automatically.
U102 : GP2AP002S00F is Optical proximity sensor.
3. Technical Brief
3.9 Proximity Sensor
Figure. Proximity Sensor Schematic
Figure. Proximity Sensor Block Diagram
PMIC(U400)
VREG_GP3
(2.7V)
GPIO124 : PROXI_OUT
MSM7227(U300)
GPIO123 : PROXI_SDA
GPIO122 : PRGXI_SCL
U00
MSM7227(U200)