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ACR38x Reference Manual (CCID)
Version 6.02
Page 15 of 20
www.acs.com.hk
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
0-9
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.
