LG KU950 - Page 51

3.10.4. Keypad
KU950 has 20 buttons, 5 tact switches and 3 side keys. Figure shows the Keypad circuit. ‘END’ Key is
connected to PM_ON_SW_N to PM6650 and GPIO76 of MSM6275.
3. TECHNICAL BRIEF
- 52 -
Table. Key Matrix Mapping Table
Figure. Schematic of keypad
COL0 COL1 COL2 COL3 COL4 COL5
ROW0
HOT900
14 7*
SIDE
(DVB-H) VOLUME UP
HOT901 SIDE
ROW1 DVB-H) 2 5 8 0 VOLUME
DOWN
ROW2
HOT902
36 9#
SIDE
(MENU) CAMERA
ROW3 SEND HOT100 HOT101 SEND CLR_BACK Side Key
ROW4 LEFT UP RIGHT DOWN SELECT
8
1
KEY MATRIX
(JAVA)
47
*
25
39#
(MENU)
(VT CALL)
6
0
906
907
902
51KR902
905
st
51KR901
sh
901
908
900
HOT901 904
51KR900
HOT900
HOT902 909
903
VREG_MSMP_2.7V
KEY_COL[3]
KEY_ROW[0]
KEY_COL[0]
KEY_COL[4]
KEY_COL[1]
KEY_COL[2]
KEY_ROW[1]
KEY_ROW[2]
DOWN
UP
RIGHT
TACT SWITCH
LEFT
SELECT
VREG_MSMP_2.7V
680R115
R114 680
680R111
G1
G2
SW100
A
B
C
COM1
COM2COM3
D
E
R123 680
51K
R110
680R113
R112 680
KEY_COL[0]
KEY_COL[2]
KEY_COL[1]
KEY_COL[3]
KEY_COL[4]
KEY_ROW[4]
ON_SW
VA100
EVLC18S02015
SND
EVLC14S02050VA104
R100
51K
VA106 EVLC14S02050
END
VA105 EVLC14S02050
HOT100
VA103 EVLC14S02050
VREG_MSMP_2.7V
CLR_BACK
EVLC14S02050VA102
HOT101
EVLC14S02050VA107
KEY_COL[2]
KEY_COL[0]
KEY_COL[3]
PM_ON_SW_N
KEY_ROW[3]
KEY_COL[1]
KEY_COL[2]
KEY_COL[0]
KEY_COL[3]
KEY_ROW[3]
KEY_ROW[4]
KEY_COL[1]
SIDE_VOLUME_UP_KEY
SIDE_VOLUME_DOWN_KEY
SIDE_CAMERA_HOT_KEY
100ohmR906
100ohmR905
100ohmR903
PG05DBTFCD900
D902 PG05DBTFC D901 PG05DBTFC
R904 100ohm
CN900
1
2
3
4
5
SIDEKEY KEYPAD
PG05DBTFCD903
KEY_ROW[0]
KEY_COL[5]
KEY_ROW[1]
KEY_ROW[2]