ACR39x – Reference Manual
Version 1.03
www.acs.com.hk
Page 15 of 35
Offset
Field
Size
Value
Description
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 signal either High or
Low
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 guard time (0 to 254 etu between two
characters). If value is FFh, then the guard
time 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 signal 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.