Sim Interface - LG GS500 Manual

3. BB CIRCUIT TECHNICAL BRIEF

3.5 SIM Interface

GS500 supports 1.8V & 2.9V plug in SIM. SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with
S-Gold3H 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 SOCKET
SIM_IO
C604
27p
LGE Internal Use Only
2V9_SIM
GND2
8
I_O
6
VPP
5
GND
C601
4
0.1u
[Figure 3.5-1] SIM Circuit
- 40 -
GS500 service manual
2V9_SIM
GND1
7
CLK
3
RST
2
VCC
1
C602
J601
27p
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SIM_CLK
SIM_RST
C603
DNI