U)Sim Hot Plug - Fibocom NL668-LA Hardware User Manual

Figure 5- 10 (U)SIM Card Connector with Detection Signal Reference Circuit
5.3.2.2 (U)SIM card connector without detection signal
If use (U)SIM card connector without detection signal USIM_ PRESENCE pin must keep floating.
Figure 5- 11 (U)SIM Card Connector without Detection Signal Reference Circuit

5.3.3 (U)SIM hot plug

NL668-LA series module support (U)SIM hot plug function, it determines the insertion and removal of
(U)SIM card by detect the USIM_ PRESENCE pin state.
The card hot plug function can be configured by the "AT+MSMPD" command, and the AT commands are
shown in the following table:
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FIBOCOM NL668-LA Series Hardware User Manual Page 35 of 65