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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
3.6.2 MSM Sub System
3.6.2.1 USIM Interface
SIM interface scheme is shown in Figure.
And, there control signals are followed
y
USIM_CLK: USIM Clock
y
USIM_Reset: USIM Reset
y
USIM_Data: USIM Data T/Rx
3.6.2.2 UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
3. Technical Brief
GPIO_Map
Name
Note
GPIO_86
UART3_RX
Data_Rx
GPIO_87
UART3_TX
Data_Tx
Table. UART Interface
Figure. SIM Interface
MSM7227
PM7540
USIM
USIM CLK
USIM Reset
USIM Data
USIM Data
USIM Reset
USIM CLK
VREG_UIM 3.0V