LG GX500 - Dual SIM & U-SD Interface

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
GX500 Operational Description Revision A
LG Electronics 48/143 LGE Property
3.5 Dual SIM & u-SD Interface
3.5.1 Dual SIM Interface
GX500 supports dual SIM mode and each SIM supports 1.8V & 2.9V plug in SIM, SIM interface scheme is
shown in (Figure 8).
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
Figure 3-11 Dual
SIM Interface
S102
C6
C14
C7
C15
C1
C13C9
C5
C2
C4
C10
C8
C3
C12
C11
C16
RESERVED4
CLK2
RESERVED3
CLK1
RESERVED2
RST2
RESERVED1
RST1
GND1
VCC2 GND2
VCC1
I/O_2
I/O_1
VPP2
VPP1
1u
C109
2V9_SIM
K7.
4
211R
0.1u
C110 C111
22p
K
7.
4
311R
VSIM_2V9
22p
C106
22p
C112
22p
C105
SG3_SIM1_RST
SG3_SIM1_CLK
SGR_SIM2_RST
SGR_SIM2_CLK
SGR_SIM2_IO
SG3_SIM1_IO
DUAL SIM SOCKET