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3.1.5 SIM Interface (S300)
This SIM interface is placed in main board, but is connected with LTE module. Also it is controlled and
detected from LTE module. It is the push-push type SIM socket. SIM interface scheme is shown in figure.
SIM Interface
SIM_CLK : SIM card reference clock
SIM_RST : SIM card Async /sync reset
SIM_DATA : SIM card data
SIM_PWR : SIM card power source
LTE_USIM_DET/ : SIM card detection to LTE Module
NP_USIM_DET/ : SIM card detection to BCM5358U ( It is optional. Not used )
SIM_CLK
SIM_RST/
SIM_PWR
LGE Internal Use Only
S300
G5 G3 G1 COMMON
8
7
R351
DNI
6
5
4
3
2
1
G6 G4 G2
C339
C340
C341
C342
0.1u
100p
33p
33p
Figure 3.5 SIM
ENSY0023001
SCGC1B0100
TP302
R350
0
C349
TP303
DNI
SW
C350
DNI
VDD_3.3
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Copyright © 011 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
R348
SIM_PWR
4.7K
SIM_DATA
R307
0
NP_USIM_DET/
R308
0
LTE_USIM_DET/
Only for training and service purposes
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