LG E900 Service Manual page 47

3. TECHNICAL BRIEF
3.10.4 KEY
Side key & power key
The power key is controlled by PM7540. side keys & front keys are controlled by QSD8650 GPIO.
PM7540
QSD8650
QSD8650
LGE Internal Use Only
KPD_PWR_N
Figure. POWER KEY
C A M E R A
S W 9 0 2
C C _
K E Y _ R O W [ ] 0
B B _
D A
1 t s o p r e t a o i n : A - C
2 n d o p r e t a o i n : B - C
B A C K
K B 2
K E Y _ R O W [ ] 1
K E Y _ C O [ L ] 0
Figure. SIDE KEY & FRONT KEY
SW401
1
2
3
GND
ESCY0008301
K E Y _ R O W [ ] 0
K E Y _ C O [ L ] 3
K E Y _ C O [ L ] 0
K E Y _ C O [ L ] 2
K
K E Y _ C O L [ 0 ]
( G P I O 3 3 )
K E Y _ C O L [ 1 ]
V O
( G P I O 3 2 )
K E Y _ C O L [ 2 ]
C
( G P I O 3 1 )
K E Y _ C O L [ 3 ]
( G P I O 3 4 )
W N I D O W
K B 1
K E Y _ R O W [ ] 1
K E Y _ C O [ L ] 1
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Copyright © 2010 LG Electronics. Inc. All right reserved.
1-1
REV.C
2-1
V O L U M E S D I E K E Y
V O L _ U P
K B 5
K E Y _ R O W [ ] 0
K E Y _ C O [ L ] 1
E Y _ R O W [ 0 ] K E Y _ R O W [ 1 ]
( G P I O 4 2 ) ( G P I O 4 1 )
V O L U M E _ U P B A C K
L U M E _ D O W N W I N D O W
A M _ F O C U S S E A R C H
C A M _ S H O T
S E A R C H
K E Y _ R O W [ ] 1
K E Y _ C O [ L ] 2
Only for training and service purposes
V O L _ D O W N
K B 6
K B 4