Sim Card Interface - LG KG270 Service Manual

3. TECHNICAL BRIEF

3.6 SIM Card Interface

SIM_DATA
The EGoldVoice provides SIM Interface Module. The AD6527 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.
Signals
SIM_RST
SIM_CLK
SIM_DATA
2V85_VSIM
2V85_VSIM
4
GND
5
VPP
6
I_O
8
GND2 GND1
C310
22p
Figure 3-6. 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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2V85_VSIM
J300
1
VCC
2
RST
3
CLK
7
C311
C312
0.1u
22p
Description
SIM_RST
SIM_CLK