3. TECHNICAL BRIEF
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Only for training and service purposes
LGE Internal Use Only
3.7 SIM Card Interface
Figure 3.7.1. SIM CARD Interface
Signal
Description
SIM_RST
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(XMM1100) provides SIM Interface Module.
The XMM1100 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.
C229
3p
J201
C11
C10
C12
C9
C7
C3
C6
C2
C5
C1
VCC
GND1
RST
VPP
CLK
IO
GND2
GND5
GND3
GND4
C228
0.1uF
VSIM_PWR
4.7Kohms
R232
VSIM_PWR
22pF
C227
VSIM_PWR
C230
27p
SIM_DATA_1
SIM_CLK_1
SIM_RST_1