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ACR89U-A2 – Reference Manual
Version 1.01
www.acs.com.hk
Page 8 of 57
Offset
Field
Size
Value
Description
32
dwSynchProtocols
4
00000000h
ACR89 does not support
synchronous card
36
dwMechanical
4
00000000h
ACR89 does not support special
mechanical characteristics
40
dwFeatures
4
000204B2h
ACR89 supports the following
features:
- Automatic parameter configuration
based on ATR data
- Automatic ICC clock frequency
change according to parameters
- Automatic baud rate change
according to frequency and FI, DI
parameters
- Automatic PPS made by the
ACR89 according to the current
parameters
- Automatic IFSD
- Short APDU level exchange with
ACR89
44
dwMaxCCIDMessageLength
4
00000110h
Maximum message length accepted
by ACR89 is 272 bytes
48
bClassGetResponse
1
FFh
Echo class of APDU in Get
Response command
49
bClassEnvelope
1
FFh
Insignificant (Short APDU exchange
level)
50
wLCDLayout
2
0815h
8 lines x 21 characters LCD
52
bPINSupport
1
03h
ACR89 supports PIN Verification
and PIN Modification
53
bMaxCCIDBusySlots
1
01h
Only 1 slot can be simultaneously
busy
Table 2
: ACR89 Supported CCID Features Class Descriptor
Note: Standard CCID adopts little endian mode.