Msm Sub System - LG U310 Service Manual

3. TECHNICAL BRIEF

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_Reset : 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
PM6650-2M
USIM Data
Figure. SIM Interface
Name
UART_RXD
UART_TXD
Table. UART Interface
- 44 -
VREG_USIM 2.85V
USIM CLK
USIM
USIM Reset
USIM Data
Note
Data_Rx
Data_Tx