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FIBOCOM FG621-LA Series Hardware Guide
Page 32 of 57
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. When (U)SIM
card is inserted, USIM_DET pin is in high level, when (U)SIM card is removed, USIM_DET pin is in low
level.
Figure 5-10 (U)SIM card connector with detection signal reference circuit