Pc_to_rdr_setparameters – ACS ACR101 SIMicro (CCID) User Manual
Page 13
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
abProtocolData
Structure
Byte
array
Protocol Data Structure
Protocol Data Structure for Protocol T=0 (dwLength=00000005h)
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
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
bWaitingIntegerT0
1
WI for T=0 used to define WWT
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
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ACR101 PC/SC Memory Card Access
Version 1.0
Page 13 of 19
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