LG CU920 - Hardware Subsystem: RF Interface Signals

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3. TECHNICAL BRIEF
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Only for training and service purposes
3.10.2 MSM Sub System
3.10.2.1 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
3.10.2.2 UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
MSM6281
PM6650
USIM
USIM CLK
USIM Reset
USIM Data
USIM Data
USIM Reset
USIM CLK
VREG_UIM 2.85V
Figure. SIM Interface
GPIO_Map Name Note
GPIO_96 UART_RXD Data_Rx
GPIO_95 UART_TXD Data_Tx
Table. UART Interface