Sim & Usd Interface - LG GM360i Service Manual

3.5 SIM & uSD interface
GM360 supports 1.8V & 2.9V plug in SIM, SIM interface scheme is shown in (Figure 8).
GM60i
SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with BBP(S-Gold3) and the SIM power supply enabled
by PMIC.
SIM Interface
SIM_CLK : SIM card reference clock
SIM_RST : SIM card Async /sync reset
SIM_IO : SIM card bidirectional reset
SIM_IO
The MicroSD Memory Module has eight exposed contacts on one side. The S-Gold3 is connected to the module
using a dedicated eight-pin connector
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Only for training and service purposes
SIM CONNECTOR
VSIM_2V9 VSIM_2V9
R411
4
10Kohms
GND
5
VPP
6
I_O
8
GND2
C410
22pF
Figure 8 SIM & Micro SD Circuit
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VSIM_2V9
J400
1
VCC
2
RST
3
CLK
7
GND1
C408
0.1u
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3. TECHNICAL BRIEF
SIM_RST
SIM_CLK
C414 C413
22pF 22pF
LGE Property
LGE Internal Use Only