Digital Baseband - Sharp GX20 Service Manual

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MAIN PWB-A (2/3)
A
B
C
5-18
(4-G)
1.8V
2.85V
3.0V
D
VRTC
VSIM
VINT
C156
0.1
C157
0.1
C159
0.1
E
F
IC104
AD6529

DIGITAL BASEBAND

in]
n]
G
n]
n]
n]
[LCD controller RESET, Sub LCD RESET, Camera Power on]
in]
in]
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
1
CONFIDENTIAL
2.8V
3.0V
3.0V
VMEM
VINT
VINT
3.0V
VINT
C160
0.1
C161
0.1
C158
C162
0.1
0.1
C163
0.1
GPIO_00
GPIO_01
GPIO_02
[ADP3408 CHGEN]
GPIO_03
[AMP Power on/off]
GPIO_04
[Sub Backlight on]
[Not use]
GPIO_05
[ADP3408 CHRDET]
GPIO_06
[Not use]
GPIO_07
[Hardware revision monitor_0]
GPIO_08
GPIO_09
[Genie Rx]
GPIO_10
[ADP3408 EOC]
GPIO_11
[Flip Switch Detection]
GPIO_12
[Keypad Backlight on/off]
GPIO_13
[Genie Tx]
GPIO_14
[Flash WP]
GPIO_15
[Sound IC RESET]
GPIO_16
[Hardware revision monitor_1]
GPIO_17
[Hardware revision monitor_2]
GPIO_33
[LCD controller Interrupt]
[Camera Controller Interrupt]
GPIO_34
[External Connector 12pin]
GPIO_35
[External Connector 14pin]
GPIO_36
[External Connector 16pin]
GPIO_37
GPIO_38
[Sound IC Interrupt]
GPIO_39
GPO_22
[Flash VPP]
GPO_23
[Not use]
nROMCS1
[Flash_Memory_1 /CS]
nRAMCS1
[PSRAM /CS]
nRAMCS2
[SRAM /CS]
nGPCS1
[Flash_Memory_2 /CS]
nAUXCS1
[Not use]
[LCD Controller /CS]
GPIO_42
[Camera /CS]
GPIO_43
[Not use]
GPIO_44
2
3
5-18 (3-D)
FLIP_SW
G
5-9
(12-F)
LEDR
G
DATA[0-15]
[IrDA Tx]
126
[IrDA Rx]
124
113
114
112
NC
101
102
89
100
90
77
99
78
88
76
69
70
56
55
36
20
18
35
17
34
75
42
TP147
140
TP148
191
TP149
154
TP150
172
TP128
192
TP151
141
193
155
NC
4
5-9
5-18
(11-F)
(3-G)
KEY_BL_ON
LEDG
G
G
ADD[1]
ADD[19]
ADD[18]
ADD[17]
ADD[1]
ADD[2]
CHGEN
AMP_ON
5-12 (2-F)
CHRDET
5-17 (8-C)
3.0V
VINT
EOC
5
5-18
IR_O
(
)
(
)
6

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