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3. TECHNICAL BRIEF
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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.8 Dual SIM Card Interface
Figure 3-8-1. Dual SIM CARD Interface
Signal
Description
SIM_RST
This signal makes SIM card to HW default status.
SIM_CLK
This signal is transferred to SIM card.
SIM_DATA
This signal is interface datum.
Figure 3-8-2. Dual SIM selection
R330
4.7K
22p
C301
00
3
DZ
R326
10
10
3
DZ
20
3
DZ
R325
10
C334
33p
10p
C302
40
3
DZ
C305
DNI
CN300
8
7
9
6
10
5
11
4
12
3
13
2
14
1
30
3
DZ
C304
0.1u
C303
DNI
VSIM_2V85
22p
C306
1u
C333
VA309
VA308
C332
39pF
39pF
C331
R331
4.7K
SIM_CLK
SIM_DATA_1
SIM_DATA_2
SIM_RST_1
SIM_RST_2
RCV_P
VIB_P
RCV_N
R332
4.7K
VSIM_2V85
1u
C300
U300
6
5
7
4
8
3
9
2
10
1
VCC
NO2
NO1
COM2
COM1
IN2
IN1
NC2
NC1
GND
SIM_DATA
SIM_RST_SELECT
SIM_SELECT
SIM_DATA_1
SIM_DATA_2
SIM_RST_2