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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3.8 SIM Card Interface
Figure 3-8-1. SIM CARD Interface
Signal
Description
SIM_RST
SIM_RST2
This signal makes SIM card to HW default status.
SIM_CLK
This signal is transferred to SIM card.
SIM_DATA1
SIM_DATA2
This signal is interface datum.
The Main Base Band Processor(XMM2150) provides SIM Interface Module.
The XMM2150 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.
C303
22p
22p
C315
DNI
C333
C336
DNI
J300
9
8
10
7
6
3
5
2
4
1
VCC
GND1
RST
VPP
CLK
IO
GND2
GND5
GND3
GND4
J301
9
8
10
7
6
3
5
2
4
1
VCC
GND1
RST
VPP
CLK
IO
GND2
GND5
GND3
GND4
C304
0.1u
VSIM_2V85
00
3
R
K7.
4
C301
22p
VSIM_2V85
DNI
C302
VSIM_2V85
C334
DNI
DNI
C335
VSIM_2V85
DNI
C314
VSIM_2V85
C313
22p
40
3
R
K7.
4
VSIM_2V85
C316
0.1u
SIM_CLK
SIM_CLK
SIM_DATA_1
SIM_DATA_2
SIM_RST
SIM_RST2
U300
6
5
7
4
8
3
9
2
10
1
VCC
NO2
NO1
COM2
COM1
IN2
IN1
NC2
NC1
GND
100K
R314
K7.
4
63
3
R
VSIM_2V85
C320
1u
100K
R315
SIM_DATA
SIM_RST_SELECT
SIM_SELECT
SIM_DATA_1
SIM_DATA_2
SIM_RST2