LG KB770 Service Manual page 59

3. TECHNICAL BRIEF
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_Reset
USIM_Data
MSM6280
MSM6280
3.10.2.2. UART Interface
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed.
GPIO_Map
GPIO_96
GPIO_95
LGE Internal Use Only
: USIM Clock
: USIM Reset
: USIM Data T/Rx
USIM CLK
USIM CLK
USIM Reset
USIM Reset
PM6650
USIM Data
USIM Data
Figure 3.10.2.1 SIM Interface
Figure 3.10.2.1 SIM Interface
Name
UART_RXD
UART_TXD
Table 3.10.2.2 UART Interface
VREG_UIM 2.85V
VREG_UIM 2.85V
USIM CLK
USIM CLK
PM6650
USIM Reset
USIM Reset
USIM Data
USIM Data
Note
Data_Rx
Data_Tx
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USIM
USIM
Only for training and service purposes