User's Manual

VT-MOD-CELL-B48 Hardware User Manual
13
5.2.1 USIM Interface Schematic Reference
There is no SIM card interface circuit in VT-MOD-CELL-B48, and users need to add
the USIM interface circuit. Figure 4-1 shows the definition of interface signals and the
typical USIM interface schematic.
Figure 4-1 USIM interface circuit schematic on user side
Figure 4-2 Pin definition of SIM Socket