Gemalto M2M GmbH EHS6-A 사용자 설명서

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2.1 Application Interface 

 

 

EHS6-A_HIO_v02.770 

2014-08-13

 

Confidential / Preliminary

 

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 

destruction of the SIM. The CCIN signal is by default low and will change to highl evel 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 EHS6-A.

 

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 
initializing  any  SIM  card  that  the  user  inserts  after  having  removed  the  SIM  card  during 
operation. In this case, the application must restart EHS6-A. 

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 EHS6-A 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. 

SIM

CCVCC

 

CCRST

 

CCIO

 

CCCLK

 

220

 

nF

 

1

 

nF

 

CCIN

 

V180