Gemalto Prox-DU, Справочное руководство

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Reference Manual
Prox–DU & Prox–SU
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DOC118569D Public Use Page 67/145
Y1 K
Figure 37 – Information provided by T0
Y1: indicator for the presence of the interface characters
•
TA1 is transmitted when b4=1
•
TB1 is transmitted when b5=1
•
TC1 is transmitted when b6=1
•
TD1 is transmitted when b7=1
•
K: number of historical characters
Interface characters TAi, TBi, TCi, TDi
TAi, TBi, TCi (i=1, 2, 3, ... ) indicate the protocol parameters.
Each interface byte TA, TB or TC is either global or specific:
•
Global interface bytes refer to parameters of the integrated circuit within the smart
card,
•
Specific interface bytes refer to parameters of a transmission protocol offered by the
smart card.
TDi indicates the protocol type T and the presence of subsequent characters.
Bits b4, b5, b6, b7 of the byte containing Yi (T0 contains Y1; TDi contains Yi+1) state
whether character TAi for b4, character TBi for b5, character TCi for b6, character TDi for b7
are or are not (depending on whether the relevant bit is 1 or 0) transmitted subsequently in
this order after the character containing Yi.
When needed, the interface device shall attribute a default value to information
corresponding to a non transmitted interface character.
When TDi is not transmitted, the default value of Yi+1 is null, indicating that no further
interface characters TAi+j, TBi+j, TCi+j, TDi+j will be transmitted.
b7 b6 b5 b4 b3 b2 b2 b0
Yi+1 T
Figure 38 – Information provided by TDi
Yi+1: indicator for the presence of the interface characters
•
TAi+1 is transmitted when b4=1
•
TBi+1 is transmitted when b5=1
•
TCi+1 is transmitted when b6=1
•
TDi+1 is transmitted when b7=1
T: Protocol type for subsequent transmission.
If TD1, TD2 and so on are present, the encoded types T shall be in ascending numerical
order. If present, T=0 shall be first, T=15 shall be last. T=15 is invalid in TD1.
Historical characters T1, T2, ... ,TK
When K is not null, the answer to reset is continued by transmitting K historical characters
T1, T2, ... , TK.