Hardware Guide

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FIBOCOM MC116-NA Series Hardware Guide Page 31 of 63
5.3.2 (U)SIM Interface Circuit
5.3.2.1 (U)SIM Card Connector with Card Detection Signal
(U)SIM circuit design requires (U)SIM card connector. It is recommended to choose card connector with
card detect signal that supports card hot-plug function (SIM016-8P-220P is recommended by Fibocom).
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.