Instruction Manual

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Page 12 of 18
ACR100F (CCID) Reference Manual
Version 3.00
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Offset Field Size Value Description
7
AbRFU
3 Reserved for future use
The response to this message is the RDR_to_PC_Parameters message.
7.1.1.6. PC_to_RDR_ResetParameters
Reset slot parameters to default value.
Offset Field Size Value Description
0
bMessageType
1
6Dh
1
DwLength
4
0000000
0h
Size of extra bytes of this message
5
BSlot
1
Identifies the slot number for this
command
6
BSeq
1 Sequence number for command
7
AbRFU
3 Reserved for future use
The response to this message is the RDR_to_PC_Parameters message.
7.1.1.7. PC_to_RDR_SetParameters
Set slot parameters.
Offset Field Size Value Description
0
bMessageType
1
61h
1
dwLength
4
Size of extra bytes of this message
5
bSlot
1
Identifies the slot number for this command
6
bSeq
1
Sequence number for command
7
bProtocolNum
1
Specifies what protocol data structure follows.
00h = Structure for protocol T=0
01h = Structure for protocol T=1
The following values are reserved for future
use.
80h = Structure for 2-wire protocol
81h = Structure for 3-wire protocol
82h = Structure for I2C protocol
8
abRFU
2
Reserved for future use
10
abProtocolDat
aStructure
Byte
array
Protocol Data Structure
Protocol Data Structure for Protocol T=0 (dwLength=00000005h)
Offset Field Size Value Description
10
bmFindexDinde
x
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
bmTCCKST0
1
B0 – 0b, B7-2 – 000000b
B1 – Convention used (b1=0 for direct, b1=1
for inverse) Note: The CCID ignores this bit.
12
bGuardTimeT0
1
Extra Guardtime between two characters.
Add 0 to 254 etu to the normal guardtime of
12 etu. FFh is the same as 00h.
13
bWaitingInteg
erT0
1 WI for T=0 used to define WWT