LG LG-P350 - Msm Sub System

3. TECHNICAL BRIEF
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Only for training and service purposes
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3.12.2 MSM Sub System
3.12.2.1. USIM Interface
SIM interface scheme is shown in Figure.
And, there control signals are followed
-USIM_CLK : USIM Clock
-USIM_Reset : USIM Reset
-USIM_Data : USIM Data T/Rx
3.12.2.2. UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
GPIO_Map Name Note
GPIO_86 UART3_RX Data_Rx
GPIO_87 UART3_TX Data_Tx
Table. UART Interface
USIM CLK
USIM Reset
USIM Data
VREG_RUIM_ 2.85V
USIM CLK
USIM Reset
USIM Data
MSM7227 PM7540 USIM
Figure. SIM Interface