Specifications

Table Of Contents
Cinterion
®
TX62-W/TX82-W Hardware Interface Description
2.1 Application Interface
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t TX62-W_TX62-W-x_TX82-W-x_HID_v01.200d 2022-09-08
Public / Preliminary
Page 42 of 170
If using a SIM switch to change between usage of an external SIM and an eUICC as shown in
Figure 16, the module needs to be prepared for this dual mode by AT command.
By default, dual mode is disabled, and usage of the first SIM slot, i.e., the external SIM inter-
face, is configured - as shown by the following AT command result:
To configure and use the eUICC, dual mode has to be enabled, and usage of the second SIM
slot, i.e., the eUICC, needs to be specified - as shown by the following AT command sequence:
For details on these AT commands please refer to [1].
Figure 17 shows a direct connection of the internal eUICC to the module’s SIM interface lines.
In this case no dual mode is possible.
Figure 17: eUICC interface without SIM switch
AT^SCFG?
^SCFG: "SIM/CS","0"
^SCFG: "SIM/DualMode","0"
OK
AT^SCFG="SIM/DualMode","1"
^SCFG: "SIM/DualMode","1"
OK
at^scfg="SIM/CS","3"
^SCFG: "SIM/CS","3"
OK
eUICC
Module
Baseband
controller
VSIM
CCIO
CCRST
CCCLK
CCIO pull up resistor and
VSIM capacitor 2.2µF Are mounted on the module
CC2_VPP
CC2_VCC
CC2_IO
CC2_RST
CC2_CLK
CCIN