ACS ACR33U-A1 SmartDuo Smart Card Reader User Manual
Page 18
ACR33U-A1 – Reference Manual
Version 1.02
www.acs.com.hk
Page 18 of 60
Offset
Field
Size Value Description
14
bClockStop
1
00-03h
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
The response to this message is the RDR_to_PC_Parameters message.
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
00-FFh
Extra guard time (0 to 254etu
between two characters). If value is
FFh, then guard time is reduced by
1etu.
13
BwaitingIntegerT1
1
00-9Fh
B7-4 = BWI values 0-9 valid
B3-0 = CWI values 0-Fh valid
14
bClockStop
1
00-03h
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
00-FFh Size of negotiated IFSC
16
bNadValue
1
00h
Only support NAD = 00h
The response to this message is the RDR_to_PC_Parameters message.