Specifications

Cinterion
®
EXS82-W Hardware Interface Overview
2.1 Application Interface
25
 EXS82-W_HIO_v00.038 2019-12-27
Public / Preliminary
Page 15 of 44
The figure below shows a circuit to connect an external SIM card holder.
Figure 5: External UICC/SIM/USIM card holder circuit
The total cable length between the SMT application interface pads on EXS82-W and the pads
of the external SIM card holder must not exceed 100mm in order to meet the specifications of
3GPP TS 51.010-1 and to satisfy the requirements of EMC compliance.
To avoid possible cross-talk from the CCCLK signal to the CCIO signal be careful that both
lines are not placed closely next to each other. A useful approach is using a GND line to shield
the CCIO line from the CCCLK line.
It is possible to connect the UICC/USIM/SIM interface lines to an external SIM card multiplexer
controlled by the module’s SIM_SWITCH signal. Thus, it becomes possible to switch between
two networks/subscriptions each with its own UICC, and maybe different connection speeds.
See also Section 2.1.7.
2.1.5 Status LED
The STATUS line can be configured to drive a status LED that indicates different operating
modes of the module. For details on how to configure status signaling please refer to [1].
2.1.6 Fast Shutdown
The configured FST_SHDN line is an active low control signal and must be applied for at least
15 milliseconds. If unused this line can be left open because of a configured internal pull-up
resistor.
SIM
CCVCC
CCRST
CCIO
CCCLK
220nF
1nF
CCIN
V180
10pF*
10pF*
* = Optional 10pF for SIM protection against RF (internal antenna)