Reference Manual Preliminary
Prox–DU & Prox–SU
www.gemalto.com Release for first samples Do not use for final design
DOC118569A Public Use Page 82/134
PC_to_RDR_ResetParameters Command
This command is used to reset the current slot parameters.
Offset Field Size Value Description
0 bMessageType 1 6Dh PC_to_RDR_ResetParameters
1 bwLength 4 00000000h
5 bSlot 1 00h Slot 0
6 bSeq 1 00-FFh Sequence number for the command
7 abRFU 3 000000h Reserved for future used
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 and stored to be send back in the response
message RDR_to_PC_Parameters.
The response to this command message is the RDR_to_PC_Parameters response
message.
PC_to_RDR_SetParameters command
This command is used to change the slot parameters.
Offset Field Size Value Description
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
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