Sim Card Interface - LG GS155 Service Manual

3. TECHNICAL BRIEF

3.7 SIM Card Interface

SIM_CONNECTOR
SIM_DATA
The Main Base Band Processor(XMM 110) provides SIM Interface Module.
The XMM2130 checks status Periodically During established call mode whether SIM card is inserted or
not, but it doesn't check during deep sleep mode. In order to communicate with SIM card, 3 signals
SIM_DATA, SIM_CLK, SIM_RST.
And This model supports 1.8/3V SIM Card.
Signal
SIM_RST
SIM_CLK
SIM_DATA
LGE Internal Use Only
2V85_VSIM
2V85_VSIM
R206
4.7Kohms
J201
GCA26D-6S-H18-E1500
4
C5
5
C6
6
C7
10
GND4
9
C216
GND3
22pF
ENSY0025101
Figure 3.7.1. SIM CARD Interface
This signal makes SIM card to HW default status.
This signal is transferred to SIM card.
This signal is interface datum.
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3. TECHNICAL BRIEF
2V85_VSIM
1
C1
2
C2
3
C3
7
GND1
8
C225
GND2 C250
0.1uF
DNI
Description
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SIM_RST
SIM_CLK
C218
68pF