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Table Of Contents
Cinterion
®
TX62-W(-B/-C)/TX82-W Hardware Interface Description
2.1 Application Interface
69
t TX62-W_TX62-W-x_TX82-W_HID_v01.000 2021-05-19
Confidential / Preliminary
Page 47 of 154
Figure 22: Fast shutdown timing
Please note that the normal software controlled shutdown via AT^SMSO can also be config-
ured as a fast shutdown, i.e., without network deregistration. For details see [1].
2.1.11.4 SIM Switch
The UICC/USIM/SIM interface lines may be connected to an external SIM card multiplexer con-
trolled by the SIM_SWITCH signal as shown in Figure 23. Thus, it becomes possible to switch
between two networks/subscriptions each with their own UICC, and maybe different connec-
tion speeds. Please note that hot SIM insert/removal is only possible on the first SIM interface.
Also note that the SIM_SWITCH can be used to switch between a SIM and the embedded op-
tional eUICC interface as described in Section 2.1.7.
The SIM_SWITCH signal is controlled by AT command (see [1]).
Figure 23: SIM switch circuit
BATT+
ON
EMERG_RST
Fast Shut Down
V180
< 15ms
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