LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.5 SIM Interface
KP270 supports 1.8V & 2.9V plug in SIM. SIM_IO, SIM_CLK, SIM_RST ports are used to
communicate with S-Gold3H-LC 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
3. TECHNICAL BRIEF
- 36 -
[Figure 3.5-1] SIM Circuit
SIM CONNECTOR
2V9_VSIM
22p
C323
2V9_VSIM
DNI
C325
0.1u
C322
R317
10K
C3
3
4
C5
C6
5
C7
6
GND1
7
8
GND2
GND3
9
10
GND4
J301
1
C1
2
C2
C324
22p
2V9_VSIM
SIM_DATA
SIM_RST
SIM_CLK
Содержание KP275
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