Hardware Guide

Table Of Contents
USIM1_VDD
USIM1_D
ATA
USIM1_CLK
USIM1_RST
USIM1_DET
USIM2_VDD
USIM2_D
ATA
USIM2_CLK
USIM2_RST
USIM2_DET
VDD
D
AT
CLK
RST
VPP
CD
22R
0.1uF
Module
Car
d connector
22R
1K
47K
47K
22R
20K
33pF
NC
NC
NC
VDD
D
AT
CLK
RST
VPP
CD
0.1uF
33pF
NC
NC
NC
22R
22R
1K
22R
20K
Car
d connector
VDD-EXT-1V8
GND
GND
Figure 12. (U)SIM card slot with card detection signal
5.4.3. (U)SIM Card Hot Plug
The FM101-CG series module supports the (U)SIM card hot plug function. The module
detects the status of the USIM1_DET/USIM2_DET pin to determine whether a (U)SIM card
is inserted or removed.
USIM1_DET/USIM2_DET is active high by default (if the card is at high level, the card is
inserted; otherwise, the card is removed). The hot plug detection can be
enabled/disabled by the AT command as follows.
Table 19. (U)SIM card hot plug function configuration
AT Command Function Remark
AT+MSMPD=1
(U)SIM card hot plug detection is
enabled
Default setting
5. Functional Interface
Copyright © Fibocom Wireless Inc. 32