- 61 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. Technical Brief
3.12.3. Key Pad
There are 6 main key buttons that are controlled by MSM7200A. Refer to the Keypad circuit.
‘Power Button’ Key is connected to PMIC(PM7540:KPD_PWR_N).
Table. Key Matrix Mapping Table
Figure. Power ON / OFF & Suspend Button Keypad circuit
-
CAMERA
KEY_ROW[2]
VOL_UP
FOCUS
KEY_ROW[1]
Optical
Joystick
VOL_DOWN
Multitasking
KEY_ROW[0]
OJ_NRST
KEY_COL[1]
KEY_COL[0]
1
0
1
B
K
0
5
0
2
0
S
4
1
C
L
V
E
1
0
1
A
V
N
_
R
W
P
_
D
P
K
Y
E
K
F
F
O
/
N
O
R
E
W
O
P