ACS ACR33U-A1 SmartDuo Smart Card Reader User Manual

Page 23

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ACR33U-A1 – Reference Manual

[email protected]

Version 1.02

www.acs.com.hk

Page 23 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


Protocol Data Structure for Protocol T=1 (bProtocolNum=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

10h,

11h,

12h,

13h

For T-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)

12

BGuardTimeT1

1

00-FFh

Extra guard time (0 to 254etu between

two characters). If value is FFh, then

guard time is reduced by 1h.

13

BwaitingIntegerT1

1

00-9Fh

B7-4 = BWI
B3-0 = CWI

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

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