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ACR33U-A1 SmartDuo Reference Manual
Version 1.00
Page 10 of 56
www.acs.com.hk
Offset
Field
Size
Value
Description
27
bNumDataRatesSu
pported
1
00h
Does not support manual setting of data
rates
28
dwMaxIFSD
4
00000
Feh
Maximum IFSD supported by ACR33U-
A1 for protocol T=1 is 254
32
dwSynchProtocol
s
4
00000
000h
ACR33U-A1 does not support
synchronous card
36
dwMechanical
4
00000
000h
ACR33U-A1 does not support special
mechanical characteristics
40
dwFeatures
4
00020
4B0h
ACR33U-A1 supports the following
features:
•
Automatic ICC clock frequency
change according to parameters
•
Automatic baud rate change
according to frequency and FI,DI
parameters
•
Automatic PPS made by the CCID
according to the active parameters
•
Automatic IFSD exchange as first
exchange (T=1 protocol in use)
•
Short APDU level exchange with
CCID
44
dwMaxCCIDMessag
eLength
4
00000
10Fh
Maximum message length accepted by
ACR33U-A1 is 271 bytes
48
bClassGetRespon
se
1
00h
Insignificant for TPDU level exchanges
49
bClassEnvelope
1
00h
Insignificant for TPDU level exchanges
50
wLCDLayout
2
0000h
No LCD
52
bPINSupport
1
03h
With PIN Verification and Modification
53
bMaxCCIDBusySlo
ts
1
01h
Only 1 slot can be simultaneously busy
