Reference Manual
Prox–DU & Prox–SU
www.gemalto.com
DOC118569D Public Use Page 91/145
0 bMessageType 1 61h PC_to_RDR_SetParameters
1 bwLength 4 Size of the
abProtocolDataStructure field
5 bSlot 1 00h Slot 0
6 bSeq 1 00-FFh Sequence number for the
command
7 bProtocolNum 1 01h Specifies what protocol data
structure follows.
00h = structure for protocol T=0
01h structure for protocol T=1
Only T=1 structure will be used for
the contactless interface
8 abRFU 2 Reserved for future use
10 abProtocolDataStructure Byte
array
Protocol Data Structure
All parameters have no meaning for a contactless card, except the bNadValue parameter in
the Protocol data structure for protocol T=1.
This value is used for the NAD field of the T=CL protocol.
Other parameters are not used but are be stored to be sent back in the response message
RDR_to_PC_Parameters.
Protocol data structure for protocol T=0 (bProtocolNum = 0) (dwLength = 00000005h):
Offset Field Size Value Description
10 bmFindexDindex 1 b7-4 – FI selecting a clock rate
conversion factor
b3-0 – DI selecting a baud rate
conversion factor
11 bmTCCKST0 1 00h, 02h For T=0,
b0 – 0b
b7-2 – 000000b
b1 = 0 direct convention
CCID ignores bit b1
12 bGuardTimeT0 1 00h-FFh Extra Guard Time between two
characters. Add 0 to 254 etu to the
normal guard time 12 etu. FFh is
the same as 00h
13 bWaitingIntegerT0 1 00h-FFh WI for T=0 used to define WWT
14 bClockStop 1 00h- 03h ICC clock stop support
00h = Stopping the clock is not
allowed
Protocol data structure for protocol T=1 (bProtocolNum = 1) (dwLength = 00000007h):
Offset Field Size Value Description
10 bmFindexDindex 1 b7-4 – FI
b3-0 – DI
11 bmTCCKST1 1 10h, 11h,
12h, 13h
For T=0,
b7-2 = 000100b
b0 = 0b – Checksum LRC
b0 = 1b – Checksum CRC
b1 = 0 - direct convention
CCID ignores bit b1
12 bGuardTimeT1 1 00-FFh Extra Guard Time between two
characters. If value FFh, then
guard time is reduced by 1 etu.
13 bWaitingIntegersT1 1 00-9Fh b7-b4 = BWI value 0-9 valid
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