ACS ACR3801 Smart Card Reader - Manual (Page 19)

ACR3801 – Reference Manual [email protected]
Version 2.01
www.acs.com.hk
Page 19 of 62
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 BwaitingIntegerT1 1 -
B7-4 = BWI values 0-9h 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.