3. TECHNICAL BRIEF
- 16 -
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
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 )
Figure 3.5 SIM
0.1u
C339
R350
0
60
3
R
K1
TP302
TP303
DNI
R351
100p
C340
33p
C341
33p
C342
4.7K
R348
SIM_PWR
S300
ENSY0023001
SCGC1B0100
1
2
3
4
5
6
7
8
G5 G3 G1 COMMON
G6 G4 G2
SW
DNI
C350
VDD_3.3
0
R308
SIM_PWR
R307
0
DNI
C349
NP_USIM_DET/
LTE_USIM_DET/
SIM_RST/
SIM_CLK
SIM_DATA