User's Manual

Table Of Contents
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ELS61-AUS Hardware Interface Description
2.1 Application Interface
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ELS61-AUS_HID_v00.031 2016-06-03
Confidential / Preliminary
Page 29 of 102
2.1.6 UICC/SIM/USIM Interface
ELS61-AUS has an integrated UICC/SIM/USIM interface compatible with the 3GPP 31.102
and ETSI 102 221. This is wired to the host interface in order to be connected to an external
SIM card holder. Five pads on the SMT application interface are reserved for the SIM interface.
The UICC/SIM/USIM interface supports 3V and 1.8V SIM cards. Please refer to Table 2 for
electrical specifications of the UICC/SIM/USIM interface lines depending on whether a 3V or
1.8V SIM card is used.
The CCIN signal serves to detect whether a tray (with SIM card) is present in the card holder.
To take advantage of this feature, an appropriate SIM card detect switch is required on the card
holder. For example, this is true for the model supplied by Molex, which has been tested to op-
erate with ELS61-AUS and is part of the Gemalto M2M reference equipment submitted for type
approval. See Section 7.1 for Molex ordering numbers.
Note [1]: No guarantee can be given, nor any liability accepted, if loss of data is encountered after removing
the SIM card during operation. Also, no guarantee can be given for properly initializing any SIM card that
the user inserts after having removed the SIM card during operation. In this case, the application must
restart ELS61-AUS.
Note [2]: On the evaluation board, the CCIN signal is inverted, thus the CCIN signal is by default high and
will change to a low level if a SIM card is inserted.
Table 4: Signals of the SIM interface (SMT application interface)
Signal Description
GND Separate ground connection for SIM card to improve EMC.
CCCLK Chipcard clock
CCVCC SIM supply voltage.
CCIO Serial data line, input and output.
CCRST Chipcard reset
CCIN Input on the baseband processor for detecting a SIM card tray in the holder. If the SIM is
removed during operation the SIM interface is shut down immediately to prevent destruc-
tion of the SIM. The CCIN signal is by default low and will change to high level if a SIM card
is inserted.
The CCIN signal is mandatory for applications that allow the user to remove the SIM card
during operation.
The CCIN signal is solely intended for use with a SIM card. It must not be used for any other
purposes. Failure to comply with this requirement may invalidate the type approval of
ELS61-AUS.