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 SIM Card Interface
Figure 3-8-1. SIM CARD Interface
Signal
Description
SIM_RST_N
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.
The Main Base Band Processor(XMM215) provides SIM Interface Module.
The XMM215 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_N.
And This model supports 1.8/3V SIM Card.
22p
C325
J301
C11
C10
C12
C9
C7
C3
C6
C2
C5
C1
VCC
GND1
RST
VPP
CLK
IO
GND2
GND5
GND3
GND4
C314
22p
C316
DNI
0.1u
C315
2V85_VSIM
2V85_VSIM
R307
4.7K
SIM_CLK
SIM_DATA_1
SIM_RST_N
3.8 SIM Card Interface
J302
C11
C10
C12
C9
C7
C3
C6
C2
C5
C1
VCC
GND1
RST
VPP
CLK
IO
GND2
GND5
GND3
GND4
C317
22p
C319
DNI
0.1u
C318
2V85_VSIM
2V85_VSIM
R314
4.7K
SIM_CLK
SIM_RST_2
SIM_DATA_2