LG LG-V909DW - 3.16 Motion Sensor

3. TECHNICAL BRIEF
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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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3.16 Motion Sensor
The motion sensor can sense gravity & accelerated motion. Therefore according to the direction of cell phone,
the phone screen is rotated automatically. And the motion sensor is connected with a gyro sensor to
supplement each data.
U901 : KR3HD IC is interfaced to T20(U101) using I2C interface.
Figure. Motion Sensor Schematic
ACCEL_3V3
C911
33n
U901
KR3DH
61
7 6
5
4
8
3
9
2
10
1
11
12
13
41 51
2DEVRESER
DDV
GND3
GND2
INT1
VDD_IO
RESERVED1
NC1
INT2
NC2
SC
SCL_SPC
GND1
ODS_IDS_ADS
0AS_ODS
4DNG
C912
4.7u
TP906
TP908
C914
10p
ACCEL_INT
IME_CL
AD_EMI
Accelerometer