Specifications

Cinterion
®
ALAS5V Hardware Interface Description
2.1 Application Interface
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 ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 34 of 124
2.1.7 UICC/SIM/USIM Interface
ALAS5V has two UICC/SIM/USIM interfaces compatible with the 3GPP 31.102 and ETSI 102
221. These are 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 each of the two SIM inter-
faces.
The UICC/SIM/USIM interface supports 2.85V and 1.8V SIM cards. Please refer to Table 4 for
electrical specifications of the UICC/SIM/USIM interface lines depending on whether a 2.85V
or 1.8V SIM card is used.
The CCINx signal serves to detect whether a tray (with SIM card) is present in the card holder.
Using the CCINx signal is mandatory for compliance with the GSM 11.11 recommendation if
the mechanical design of the host application allows the user to remove the SIM card during
operation. 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 operate with ALAS5V and is part of the Gemalto M2M reference equipment submitted
for type approval. See Chapter 8 for Molex ordering numbers.
Note: 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 initializ-
ing any SIM card that the user inserts after having removed the SIM card during operation. In
this case, the application must restart ALAS5V.
By default, only the 1
st
SIM interface is available and can be used. Using the AT command
AT^SCFG=”SIM/CS” it is possible to switch between the two SIM interfaces. Command set-
tings are non-volatile - for details see [1].
Table 7: Signals of the SIM interface (SMT application interface)
Signal Description
GND Ground connection for SIM interfaces. Optionally a separate SIM ground line may be used
to improve EMC.
CCCLK1
CCCLK2
Chipcard clock line for 1
st
and 2
nd
SIM interface.
CCVCC1
CCVCC2
SIM supply voltage line for 1
st
and 2
nd
SIM interface.
CCIO1
CCIO2
Serial data line for 1
st
and 2
nd
SIM interface, input and output.
CCRST1
CCRST2
Chipcard reset line for 1
st
and 2
nd
SIM interface.
CCIN1
CCIN2
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 CCINx signal is active low.
The CCINx signal is mandatory for applications that allow the user to remove the SIM card
during operation.
The CCINx 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
ALAS5V.