Rainbow-electronics AT89C5122 Manual de usuario descargar pdf (Pagina 65)

AT8xC5122/23

4202E–SCR–06/06

Block Diagram

The Smart Card Interface Block diagram is shown Figure 30:

Figure 30. SCIB Block Diagram

Definitions This paragraph introduces some of the terms used in ISO 7816-3 and EMV recommen-

dations. Please refer to the full recommendations for a complete list of terms.

Terminal and ICC Terminal is the reader, ICC is the Integrated Circuit Card

ETU Elementary Timing Unit (Bit time)

T=0 Character oriented half duplex protocol T=0

T=1 Block oriented half duplex protocol T=1

Activation: Cold Reset Reset initiated by the Terminal with Vcc power-up. The card will answer with ATR (see

below)

Activation: Warm Reset Reset initiated by the Terminal with Vcc already powered-up, and after a prior ATR or

Warm Reset

De-Activation Deactivation by the Terminal as a result of : unresponsive ICC, or ICC removal.

Barrel shifter

Scart

fsm

Interrupt generator

Power on

Power off

fsm

I/O

mux

IO (in)

IO (out)

CLK

RST

C4 (out)

Clk_iso

C8 (out)

C4 (in)

C8 (in)

Waiting time counter

Guard time counter

VCARD

INT

Clk_cpu

Etu counter

SCI Registers

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 212 213

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Rainbow-electronics AT89C5122 Manual de usuario Pagina 65