Rainbow Electronics AT89C5122 - Manual (Page 64)

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