Rainbow-electronics AT89C5122 Manual do Utilizador descarregar pdf (Página 64)

AT8xC5122/23

4202E–SCR–06/06

Smart Card Interface

Block (SCIB)

The SCIB provides all signals to interface directly with a smart card. The compliance

with the ISO7816, EMV’2000, GSM and WHQL standards has been certified.

Both synchronous (e.g. memory card) and asynchronous smart cards (e.g. micropro-

cessor card) are supported. The component supplies the different voltages requested by

the smart card. The power off sequence is directly managed by the SCIB.

The card presence switch of the smart card connector is used to detect card insertion or

card removal. In case of card removal, the SCIB de-activates the smart card using the

de-activation sequence. An interrupt can be generated when a card is inserted or

removed.

Any malfunction is reported to the microcontroller (interrupt + control register).

The different operating modes are configured by internal registers.

• Support of ISO/IEC 7816

• character mode

• one transmit/receive buffer

• 11 bits ETU counter

• 9 bits guard time counter

• 32 bits waiting time counter

• Auto character repetition on error signal detection in transmit mode

• Auto error signal generation on parity error detection in receive mode

• Power on and power off sequence generation

• Manual mode to drive directly the card I/O

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Rainbow-electronics AT89C5122 Manual do Utilizador Página 64