A.9. Smart Card interface

J33 is a Smart Card (SIM) socket. (J31 is for an alternate layout socket and is not fitted).

J33 includes a switch for card detection.

The signals on the SIM socket are also connected to the SCI expansion socket. The signals associated with the SCI are listed in Table A.9.

Table A.9. Smart Card connector signal assignment

PinSignal Description
C1SC_VCCCard power (1.8V, 3.3V, or 5V)
C2SC_RSTReset to card
C3SC_CLKClock to or from card
C4-Not present on J33, NC on J31.
C6SC_VCCCard power (1.8V, 3.3V, or 5V)
C7SC_IOSerial data to or from the card
C8-Not present on J33, NC on J31.
SW1nSCIDETECTxCard detect signal from switch in socket (not present on J31)

Figure A.9. Smart Card contacts assignment

Smart Card contacts assignment

Figure A.9 shows the signal assignment of a Smart Card. Pins 4 and 8 are not connected and are omitted on some cards.

The SIM card is inserted into one of the SIM card sockets with the contacts face down.

Figure A.10 shows the pinout of the connector J30. This can be used to connect to an off-PCB smart card device.

Figure A.10. J30 SCI expansion connector J30

J30 SCI expansion connector J30

Table A.10 lists the signals on the SCI expansion connector.

Table A.10. Signals on expansion connector

PinSignal Description
2SCIFCBSIM function code bit
4nSCIDETECTCard detect for SIM 0
5SC_VCCSIM power
6nSCICARDRSTActive LOW reset to SIM 0
8NCNot connected

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