Yuga CLM920 TE3 LTE Module hardware usage guide V1.4

CLM920_TE3 hardware user guide Version 1.2
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3.8.2 USIM_DET hot swap design
CLM920_TE3 4G support USIM hot swap function. The USIM_DET pin is used as an input
detection pin to determine whether the SIM card is inserted or not. The USIM_DET pin
defaults to a pull-up level.
Figure 3-10 hot swap
NO
PIN
USIM_DET status
描述
1
13
HIGH
SIM inserted
2
13
LOW
SIM plug out
Figure 12 USIM detect circuit
Use AT-command, user can ON/OFF this function. Reference AT command manual in
details.
3.9 Airplane mode Interface
CLM920_TE3 4G provides W_DISABLE to turn ON/OFF RF function. In addition, the RF
function can also be enabled or disabled by AT command. W_DISABLE function as below：
Figure 3-11 W_DISABLE Pin description
NO
PINs
W_DISABLE Status
Function
1
4
H
Airplane mode ON
2
4
L
Airplane mode OFF
Airplane mode reference design：