- 50 -
LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3.6.4 Touch Interface
In GD880 touch screen sensor is an optically clear, solid state, high resolution capacitive touch solution
that enables precise and advanced finger-based input for portable electronic devices.
Touch screen module is a glass ClearPad sensor with an attached flexible PCB with control electronic
components.There is a cover lens to protect the sensor assembly. The communication protocol to host
is RMI over I2C.
3. Technical Brief
Figure. Touch Sensor Schematic
U200
LCD connector
(CN100)
M5
Y18
AC19
AF18
Y17
U16
AC18
AF17
W16
AE17
AC17
Y16
AB17
W5
W3
V5
V6
AB9
V9
V8
Y9
W8
AB8
V3
V2
U2
U8
6
M
8
M
9
M
8
E
A
7
F
A
8
C
A
6
F
A
7
C
A
6
E
A
1
1
R
8
1
B
A
8
1
W
1
1
Y
7
1
C
7
1
B
6
1
H
8
1
H
7
1
M
6
2
G
0
1
Y
1
1
T
0
1
W
6
1
E
A
7
0
1
_
O
I
P
G
6
0
1
_
O
I
P
G
5
0
1
_
O
I
P
G
4
0
1
_
O
I
P
G
3
0
1
_
O
I
P
G
2
0
1
_
O
I
P
G
1
0
1
_
O
I
P
G
0
0
1
_
O
I
P
G
9
9
_
O
I
P
G
8
9
_
O
I
P
G
7
9
_
O
I
P
G
6
9
_
O
I
P
G
5
9
_
O
I
P
G
4
9
_
O
I
P
G
3
9
_
O
I
P
G
2
9
_
O
I
P
G
1
9
_
O
I
P
G
0
9
_
O
I
P
G
9
8
_
O
I
P
G
8
8
_
O
I
P
G
7
8
_
O
I
P
G
6
8
_
O
I
P
G
5
8
_
O
I
P
G
GPIO_57
GPIO_58
GPIO_59
GPIO_60
GPIO_61
GPIO_62
GPIO_63
GPIO_64
GPIO_65
GPIO_66
GPIO_67
GPIO_68
GPIO_69
GPIO_70
GPIO_71
GPIO_72_GRFC_9
GPIO_73_GRFC_8
GPIO_74_GRFC_7
GPIO_75_GRFC_6
GPIO_76_GRFC_5
GPIO_77_GRFC_4
GPIO_78_GRFC_3
GPIO_79_GRFC_2
GPIO_80_GRFC_1
GPIO_81_GRFC_0
GPIO_82
GPIO_83
GPIO_84
01
2
PT
K0
01
61
2
R
N_
T
E
S
E
R_
T
B
N
_
T
E
S
E
R
_
N
A
L
W
BT_HOST_WAKEUP
BT_PCM_DOUT
BT_PCM_DIN
BT_PCM_SYNC
BT_PCM_CLK
BT_WAKEUP
P
U
E
K
A
W_
T
S
O
H_
N
AL
W
ANT_SEL3
GSM_PA_BAND
GSM_PA_EN
ANT_SEL2
ANT_SEL1
1
R_
A
P_
W
RTR_SSBI
A
D
S
_
C
2
I
_
O
I
D
U
A
N
E_
O
X
CT
I
B
S
S_
CI
M
P
L
C
S
_
C
2
I
_
O
I
D
U
A
N
E_
S
AI
B_
CI
M_
S
H
N_
T
E
S
E
R_
T
V
C_
D
CL
MICROSD_DATA[0]
MICROSD_DATA[1]
MICROSD_DATA[2]
MICROSD_DATA[3]
MICROSD_CMD
MICROSD_CLK
LIN_MOTOR_EN
TOUCH_I2C_SCL
TOUCH_I2C_SDA
N
_
T
E
S
E
R
_
D
C
L
T
N
I
_
W
S
_
C
I
U
M
D
I
_
R
E
K
A
M
_
D
C
L
C
N
Y
S
V
_
T
V
C
_
D
C
L
ANT_SEL0
3.6.4 Touch Interface
In GD880 touch screen sensor is an optically clear, solid state, high resolution capacitive touch solution
that enables precise and advanced finger-based input for portable electronic devices.
Touch screen module is a glass ClearPad sensor with an attached flexible PCB with control electronic
components.There is a cover lens to protect the sensor assembly. The communication protocol to host
is RMI over I2C.
3. Technical Brief
Figure. Touch Sensor Schematic
U200
LCD connector
(CN100)
CN100
31
30
32
29
33
28
34
27
35
26
36
25
37
24
38
23
39
22
40
21
41
20
42
19
43
18
44
17
45
16
46
15
47
14
48
13
49
12
50
11
51
10
52
9
53
8
54
7
55
6
56
5
57
4
58
3
59
2
60
1
G1
G2
G3
G4
VREG_LCD_1.8V
VREG_LCD_2.8V
0.1u
C112
0.1u
C113
TOUCH_VDD_2.8V
0.1u
C114
VREG_MSMP_2.6V
1
21
1
R
DNI
31
1
R
TOUCH_I2C_SDA
TOUCH_I2C_SCL
TOUCH_ACK
LCD_RESET_N
LCD_MAKER_ID
MLED_OUT
MLED1
MLED3
MLED5
LCD_PWM
MLED2
MLED4
MLED6
FLT_LCD_R[7]
FLT_LCD_R[6]
FLT_LCD_R[4]
FLT_LCD_R[3]
FLT_LCD_R[2]
FLT_LCD_R[1]
FLT_LCD_R[0]
FLT_LCD_G[7]
FLT_LCD_G[6]
FLT_LCD_G[2]
FLT_LCD_G[0]
FLT_LCD_B[7]
FLT_LCD_B[6]
FLT_LCD_B[5]
FLT_LCD_B[4]
FLT_LCD_B[3]
FLT_LCD_B[2]
FLT_LCD_B[1]
FLT_LCD_B[0]
FLT_LCD_SCL
FLT_LCD_SDO
FLT_LCD_HSYNC
FLT_LCD_VSYNC
FLT_LCD_SDI
FLT_LCD_DEN
FLT_LCD_G[1]
FLT_LCD_R[5]
FLT_LCD_G[4]
FLT_LCD_G[3]
FLT_LCD_G[5]
FLT_LCD_CS_N
MLED7
FLT_LCD_DCLK
U200
LCD connector
(CN100)
Содержание GD88O
Страница 1: ...Service Manual Model GD880 Internal Use Only Service Manual GD880 Date March 2010 Issue 1 0 ...
Страница 183: ... 184 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 199: ... 200 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 217: ... 218 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...