Reference Manual
Prox–DU & Prox–SU
www.gemalto.com
DOC118569D
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Check character TCK
The value of TCK shall be such that the exclusive-oring of all bytes from T0 to TCK included
is null.
Protocol type T
The four least significant bits of any interface character TDi indicate a protocol type T,
specifying rules to be used to process transmission protocols. When TDi is not transmitted,
T=0 is used.
•
T=0 is the asynchronous half duplex character transmission protocol.
•
T=1 is the asynchronous half duplex block transmission protocol.
•
T=2 and T=3 are reserved for future full duplex operations.
•
T=4 is reserved for an enhanced asynchronous half duplex character transmission
protocol.
•
T=5 to T=13 are reserved for future use.
•
T=14 is reserved for protocols not standardized by ISO.
•
T=15 does not refer to a transmission protocol, but only qualifies global interface
bytes.
Note: If only T=0 is indicated, TCK shall not be sent. In all other cases TCK shall be sent.
Specifications of the global interface bytes
Among the interface bytes possibly transmitted by the smart card in answering to reset, this
subclaus defines only the global interface bytes TA1, TB1, TC1, TA2, TB2, the first TA for
T=15 and the first TB for T=15.
These global interface bytes convey information to determine parameters which the
interface device shall take into account.
TA1
TA1 encodes the indicated value of the clock rate conversion integer (Fi), the indicated
value of the baud rate adjustment integer (Di) and the maximum value of the frequency
supported by the smart card (f (max.)). The default values are Fi = 372, Di = 1 and f (max.) =
5 MHz.
Fi 0000 0001 0010 0011 0100 0101 0110 0111
F 372 372 558 744 1116 1488 1860 RFU
Fs (max)
MHz
4 5 6 8 12 16 20 -
Fi 1000 1001 1010 1011 1100 1101 1110 1111
F RFU
512
768
1024
1536
2048
RFU
RFU
Fs (max)
MHz
- 5 7.5
10
15
20 - -
Table 20 – Clock rate conversion factor F
Summary of Contents for Prox-DU
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