LG KG270 Service Manual - Page 27
SIM Card Interface - insert sim
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3. TECHNICAL BRIEF 3.6 SIM Card Interface 2V85_VSIM 2V85_VSIM R302 4.7K 0 R303 2V85_VSIM SIM_DATA C310 22p J300 4 1 5 GND VPP VCC RST 2 6 8 I_O CLK GND2 GND1 3 7 SIM_RST SIM_CLK C311 C312 0.1u 22p Figure 3-6. SIM CARD Interface 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 Description This signal makes SIM card to HW default status. This signal is transferred to SIM card. This signal is interface datum. - 28 -
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3.6 SIM Card Interface
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.
3. TECHNICAL BRIEF
- 28 -
Figure 3-6. SIM CARD Interface
C311
0.1u
4.7K
R302
C310
22p
22p
C312
2V85_VSIM
2V85_VSIM
0
R303
I_O
6
2
RST
1
VCC
VPP
5
J300
CLK
3
4
GND
GND1
7
8
GND2
2V85_VSIM
SIM_CLK
SIM_RST
SIM_DATA
Signals
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.