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FIBOCOM NL668-LA Series Hardware Guide
Page 31 of 61
Figure 5-9 (U)SIM card connector (SIM016-8P-220P)
SIM016-8P-220P card connector, DET and POL are short connected when the card is inserted; DET and
POL are disconnected when there is no card. The following is the reference design circuit, (U)SIM card
insert, USIM_PRESENCE pin is high level; (U)SIM card pull out, USIM_PRESENCE pin is low level.