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Protocol Data Structure for Protocol T=1 (dwLength=00000007h)
Offset Field Size Value Description
10
bmFindexDindex
1
B7-4 – FI – Index into the table 7 in ISO/IEC
7816-3:1997 selecting a clock rate conversion
factor
B3-0 – DI - Index into the table 8 in
ISO/IEC 7816-3:1997 selecting a baud rate
conversion factor
11
BmTCCKST1
1
B7-2 – 000100b
B0 – Checksum type (b0=0 for LRC, b0=1 for
CRC)
B1 – Convention used (b1=0 for direct, b1=1
for inverse) Note: The CCID ignores this bit.
12
BGuardTimeT1
1
Extra Guardtime (0 to 254 etu between two
characters). If value is FFh, then guardtime is
reduced by 1 etu.
13
BwaitingIntege
rT1
1
B7-4 = BWI values 0-9 valid
B3-0 = CWI values 0-Fh valid
14
bClockStop
1
ICC Clock Stop Support
00h = Stopping the Clock is not allowed
01h = Stop with Clock signal Low
02h = Stop with Clock signal High
03h = Stop with Clock either High or Low
15
bIFSC
1 Size of negotiated IFSC
16
bNadValue
1
00h
Only support NAD = 00h
The response to this message is the RDR_to_PC_Parameters message.
7.1.2. CCID Bulk-IN Messages
The Bulk-IN messages are used in response to the Bulk-OUT messages. ACR101 (CCID) shall
follow the CCID Bulk-IN Messages as specified in section 4. This section lists the CCID Bulk-IN
Messages to be supported by ACR101 (CCID).
7.1.2.1. RDR_to_PC_DataBlock
This message is sent by the smart card reader in response to PC_to_RDR_IccPowerOn,
PC_to_RDR_XfrBlock and PC_to_RDR_Secure messages.
Offset Field Size Value Description
0
bMessageType
1
80h
Indicates that a data block is being sent from
the CCID
1
dwLength
4 Size of extra bytes of this message
5
bSlot
1
Same value as in Bulk-OUT message
6
bSeq
1
Same value as in Bulk-OUT message
7
bStatus
1
Slot status register as defined in CCID section
4.2.1
8
bError
1
Slot error register as defined in CCID section
4.2.1 and this specification section 5.2.8
9
bChainParameter
1
00h
RFU (TPDU exchange level)
10
abData
Byte
array
This field contains the data returned
by the CCID
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ACR101 PC/SC Memory Card Access
Version 1.0
Page 14 of 19
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