Sim & Usd Interface - LG KF510C Service Manual

3. TECHNICAL BRIEF
3.5 SIM & uSD interface
KF510 supports 1.8V & 2.9V plug in SIM, SIM interface scheme is shown in (Figure 10).
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 CONNECTOR
SIM_EN
SIM_RST
SIM_CLK
SIM_IO
C508
150p
LGE Internal Use Only
SIM CONNECTOR
SIM_EN
SIM_RST
SIM_CLK
SIM_IO
C508
150p
2V9_SIM
S
NTS2101PT1G
G
Q500
D
R504
10K
J500
1 6
VCC I_O
2 5
RST VPP
3 4
CLK GND
C506
C507
22p
0.1u
Figure 10 SIM & Micro SD Circuit
2V9_SIM
S
G NTS2101PT1G
Q500
D
R504
10K
J500
1 6
VCC I_O
2 5
RST VPP
3 4
CLK GND
C506
C507
22p
0.1u
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Only for training and service purposes