Product Info

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 39 of 154
2.1.7 eUICC Interface
As an option TX62/TX82 supports an eUICC in MFF-XS format. This MFF-XS eUICC is located
under the shielding, is only connected to specific module pads, and has no physical connec-
tions with other circuits inside the module. Figure 15 shows an example of how to connect the
eUICC to the module’s SIM interface lines as well as a switch to select whether to use the in-
ternal MFF-XS eUICC or an external plug-in SIM card. Figure 16 shows an example for a direct
connection to the module’s SIM interface lines.
Figure 15: eUICC interface with switch for external SIM
The eUICC interface comprises five lines (plus ground) as listed below in Table 6.
Table 6: Signals of the eUICC interface option (SMT application interface)
Signal Description
CC2_RST Chip Card Reset
CC2_CLK Chip Card Clock
CC2_IO Chip Card I/O (data line)
CC2_VPP -
CC2_VCC Operation voltage for SIM Card (=1.8V)
GND eUICC Ground
Module
Max. distance 10cm
SIM card holder
SIM
eUICC
CCIO pull up resistor and
VSIM capacitor 2.2µF
are mounted on the module
CC2_VCC capacitor 2.2µF mounted on the module
VSIM
CCIO
CCRST
CCCLK
CC2_VPP
CC2_VCC
CC2_IO
CC2_RST
CC2_CLK
SIM_SWITCH to
drive SIMSELECT
Common
If 1
If 2
SIM
switch
FSA2567
SIMSELECT
Alternatively SIM switch can be bridged
44
4 x 0R
ESD protection
(see 2.1.6.1)
SIM inserted =>
Switch closed
SIM_SWITCH = Low => SIMSELECT = High: SIM connected
SIM_SWITCH = High => SIMSELECT = Low: eUICC connected
VBATT
10k
22k
100k
CCIN
100k
100k
V180
100k
100p
10k
CCIN (“Application“):
low => card inserted
high => card removed
CC IN ( “Module“):
high => card inserted
low => card removed