Gemalto Prox–DU Guide

PC/SC Guide
Prox–DU & Prox–SU
www.gemalto.com
DOC119811A Public Use Page 114/129
Y1 K
Figure 18 – 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 19 – 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.

Gemalto Prox–DU Specifications

General

Brand	Gemalto
Model	Prox–DU
Category	Card Reader
Language	English