Cavli Wireless C100QM/C10QM Hardware Manual
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Figure 3-17 Hot swap detection of the USIM card
✧ It is recommended to add a diode protection next to the UIM _DET pin of the module.
✧ When using a normally closed SIM card holder or a normally open SIM card holder,
the detection function can be set by the AT command. If AT+HOSCFG=1 is set, the
status of the SIM card is high when the SIM card is in position, and AT+HOSCFG=1 is
set. When the SIM card is in the state, the status is low. Set AT+HOSCFG=0.0 The
SIM card hot swap function is disabled.
3.8 General purpose GPIO interface
The C100QM/C10QM module contains five general control signals. The interface is
defined as follows:
Table 3-13 General GPIO Pin Definitions