Reference Manual
Prox–DU & Prox–SU
www.gemalto.com
DOC118569D Public Use Page 79/145
guard time is reduced by 1 etu.
13 bWaitingIntegersT1 1 00-9Fh b7-b4 = BWI value 0-9 valid
b3-b0 = CWI value 0-F valid
14 bClockStop 1 00h ICC clock stop support
00h = Stopping the clock is not
allowed
15 bIfsc 1 00-FEh Size of negotiated IFSC
16 bNadValue 1 Value = 00h if CCID doesn’t
support a value other than the
default value.
Else value respects ISO/IEC 7816-
3 9.4.2.1
bClockStop: Use only stopping the clock is not allowed for this parameter.
bNadValue: The value is ignored.
The response to this message is the RDR_to_PC_Parameters response message.
PC_to_RDR_Escape command
This command allows the CCID manufacturer to define and access extended features.
The information sent via this command is processed by the CCID control logic.
Offset Field Size Value Description
0 bMessageType 1 6Bh PC_to_RDR_Escape
1 bwLength 4 Size of the abData field
5 bSlot 1 00h Slot 0
6 bSeq 1 00-FFh Sequence number for the
command
7 abRFU 3 000000h Reserved for Future Used
10 abData Byte
array
Data block sent to the CCID
The response to this message is the RDR_to_PC_Escape response message.
Note: the Microsoft CCID USB driver parameters should be customized to process the CCID
Escape Command because this feature is not enabled by default. Refer to the “Enabling the
CCID Escape Command feature into the driver” paragraph for more information.
The Linux and Mac CCID USB driver support the next following Escape commands.
Switch interface
This command is use to switch to the contactless interface after a contact card is inserted
and to switch back to the contact card interface.
The command format is the following:
Offset Field Size Value Description
0 bCommandFamily 1 52h Reader command
1 bCommandType 1 F8h Management
2 bCommand 1 04h 04h = Switch interface
3, 4 wLength 2 0001h Size of the Data field
5 bInferface 1 01h,02h 01h = Switch to contactless interface
02h = Switch to contact interface
The response format is the following:
Offset Field Size Value Description
0,1 abStatus 2 XX XX Command Status execution
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