miniPCIe-CEFIRO Family
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2017/05 v1.2
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MTX Terminals® by MATRIX ELECTRONICA S.L.U
4.4
SIM card interface
The miniPCIe-CEFIRO cards provide a SIM/UICC interface at the 52-pin application connector compliant
to the ISO/IEC 7816-3 specification. The SIM interface is intended for 1.8V and 3V SIM cards in
accordance with GSM 11.12 Phase 2.
The following table list the pins available fot the SIM/UICC interface.
The total cable length between the card pads and the pads of an 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 SIMCLK signal to the SIMIO 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 SIMCLK line.
4.5
Antenna interface
The miniPCIe-CEFIRO cards has u.FL-R-SMT antenna connector for each RF interface of the device
(GSM/UMTS, GPS and WLAN&BT). The RF interface has an impedance of 50Ω. The miniPCIe-CEFIRO is
capable of sustaining a total mismatch at the antenna lines without any damage, even when
transmitting at maximum RF power.
The external antenna must be matched to achieve best performance regarding radiated power,
modulation accuracy and harmonic suppression. Antenna matching networks are not included on the
miniPCIe-CEFIRO card and should be placed in the host application if the antenna does not have an
impedance of 50Ω.
Signal
Description
SIMCLK
Chipcard clock
SIMVCC
SIM supply voltage
SIMIO
Serial data line, input and output
SIMRESET
Chipcard reset
