ACS ACR33U-A1 SmartDuo Smart Card Reader - Manual (Page 22)

ACR33U-A1 – Reference Manual [email protected]
Version 1.02
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Page 22 of 60
8.2.3. RDR_to_PC_Parameters
This message is sent by ACR33U-A1 in response to PC_to_RDR_GetParameters and
PC_to_RDR_SetParameters messages.
Offset Field Size Value Description
0 bMessageType 1 82h -
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
9 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
10
abProtocolDataSt
ructure
Byte
array
-
Protocol Data Structure as summarized
in CCID Section 10.1.6
Protocol Data Structure for Protocol T=0 (bProtocolNum=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
00h,
02h
For T=0, B0 – 0b, B7-2 – 000000b
B1 – Convention used (b1=0 for direct,
b1=1 for inverse)
12 bGuardTimeT0 1 00-FFh
Extra guard time between two
characters. Add 0 to 254etu to the
normal guard time of 12etu. FFh is the
same as 00h.
13 bWaitingIntegerT0 1 00-FFh WI for T=0 used to define WWT