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Touch
Sensors
LGE Internal Use Only
8.9" Touch Screen
Level Shifter for Touch Panel I2C
V_TCH_POWER
V_TCH_3V3
CN900
1
10
TOUCH_ID
2
9
GEN1_I2C_SCL
TOUCH_INT_N
3
8
GEN1_I2C_SDA
TOUCH_I2C_SDA
4
7
TOUCH_I2C_SCL
5
6
TOUCH_RESET_N
C913
0.1u
Accelerometer
ACCEL_3V3
U901
C911
C912
KR3DH
33n
4.7u
1
13
VDD_IO
GND3
2
12
NC1
GND2
TP908
3
11
SENSOR_I2C_SCL
ACCEL_INT
NC2
INT1
4
10
IME_CL
SCL_SPC
RESERVED1
5
9
TP906
GND1
INT2
C914
10p
V_LDO0_3V3
ACCEL_3V3
FB902
V_TCH_3V3
VDD_1V8
U900
8
1
VCC
VL
7
2
IO_VCC1
IO_VL1
TOUCH_I2C_SCL
6
3
IO_VCC2
IO_VL2
TOUCH_I2C_SDA
5
4
EN
GND
Compass
COMPASS_3V3
COMPASS_3V3
C900
470n
C901
U903
10n
AMI304
4
12
SENSOR_I2C_SDA
SCL
SDA
5
TP901
NC1
DRDY
11
COMPASS_DRDY
6
ADDR
10
VPP
IME_DA
GND
GYRO_3V3
TP900
V_LDO0_3V3
COMPASS_3V3
FB903
- 159 -
7. CIRCUIT DIAGRAM
Level Shifter for Sensor I2C
V_LDO0_3V3
VDD_1V8
U906
8
1
VCC
VL
7
2
GEN2_I2C_SCL
IO_VCC1
IO_VL1
SENSOR_I2C_SCL
6
3
IO_VCC2
IO_VL2
GEN2_I2C_SDA
SENSOR_I2C_SDA
5
4
EN
GND
Gyro Sensor
1
18
CLKIN
GND
2
17
NC1
NC8
3
16
NC2
U1
NC7
4
15
NC3
NC6
5
14
NC4
NC5
6
13
IME_DA
VDD
GYRO_3V3
C909
0.1u
C910
0.1u
V_LDO0_3V3
GYRO_3V3
FB920
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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