4. Parameter T : Refer to transmission protocol and/or qualify interface bytes. In every byte TD(i), TA2 or PPSO, the bits b4 to b1 code is a value of T ATR (Answer to Reset) - Continue Parameter Protocol Parameter Protocol T=0 Half duplex trans. Asynchronous char. T=5~13 Reserved for future use T=1 Half duplex trans. Asynchronous block T=14 ISO/IEC JTC 1 SC 17 T=2, T=3 Future full duplex T=15 Qualify global interface T=4 Reserved enhance T=0
5. TS T0 TA1 TB1 TC1 TD1 TA2 TB2 TC2 TDi TAi, TBi, TCi T1 TK TCK Coding convention for all subsequent characters (direct or inverse convention) Subsequent interface characters, number of historical characters Parameters to calculate the work etu Parameters to calculate the programming voltage and current Parameters to calculate the extra guardtime requested by the card; no extra guardtime is used to send characters from the card to the ME Protocol type; indicator for the presence of interface characters, Specifying rules to be used for transmissions with the given protocol type not used for protocol T=0 Parameter to calculate the programming voltage Parameters to calculate the work waiting time Protocol type; indicator for the presence of interface characters, specifying rules to be used for transmissions with the given protocol type Characters which contain interface characters for other transmission protocols. General Information (Card manufacturer, Chip inserted in card, state of life of card) Check byte (exclusive ‑ORing: T0~TCKinclusive) ATR (Answer to Reset) - Continue
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