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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
Figure 13 37pin LCD connector circuit
3.9. Keypad Switching & Scanning
The keypad interface is a peripheral which can be used for scanning keypads up to 5 rows (outputs from
Port Control Logic) and 6 columns (inputs to PCL). The number of rows and columns depend on settings
of the PCL.
37PIN LCD Connector
10K
R701
EVLC14S02050
VA708
EVLC14S02050
VA707
EVLC14S02050
EVLC14S02050
VA711
VA712
VA710 EVLC14S02050
C702
0.1u
EVLC14S02050
VA709
9
28
29
3
30
31
32
33
34
35
36
37
4
5
6
7
8
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
CN701
1
10
11
12
VIO_2V62
DNI
C703
100K
R700
VIO_2V62
DIF_RD
DIF_D(8)
DIF_D(7)
DIF_D(6)
DIF_D(5)
DIF_D(4)
DIF_D(3)
DIF_D(2)
DIF_D(1)
MLED
MLED1
MLED2
MLED3
MLED4
MLED5
DIF_RESET
DTX3
LCD_ID
LCD_PWM
DTX1
DTX0
DIF_D(9)
DIF_D(10)
DIF_D(11)
DIF_D(12)
DIF_D(15)
DIF_D(14)
DIF_D(13)
DIF_CS
DIF_D(0)
DIF_CD
DIF_WR
DIF_VSYNC