LG U300 Service Manual page 42

3.10.2 MSM Sub System
3.10.2.1. SIM Interface
SIM interface scheme is shown in Figure. And, there control signals are followed
• USIM_CLK : USIM Clock
• USIM_RST_N: USIM Reset
• USIM_DATA : USIM Data T/Rx
MSM6250A
3.10.2.2. UART Interface
UART signals are connected to MSM GPIO through IO connector with 115,200 bps speed. And, used
for RF calibration and Data download.
GPIO_Map
GPIO_96
GPIO_95
USIM CLK
USIM Reset
PM6650-2
USIM Data
Figure. SIM Interface
Name
UART_RXD
UART_TXD
Table. UART Interface
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3. TECHNICAL BRIEF
VREG_USIM 2.85V
USIM CLK
USIM
USIM Reset
USIM Data
Note
Data_Rx
Data_Tx