ACS ACR89U-A1, Reference Manual

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ACR89U-A1 – Reference Manual
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Offset Field Size Value Description
1
bmSlotICCState
- -
This field is reported on byte granularity.
The size is ( 2 bits * number of slots )
rounded up to the nearest byte. Each slot
has 2 bits. The least significant bit reports
the current state of the slot (0b= no ICC
present, 1b = ICC present). The most
significant bit reports whether the slot has
changed state since the last
RDR_to_PC_NotifySlotChange message
was sent (0b = no change, 1b = change).
If no slot exists for a given location, the
field returns 00b in those 2 bits.
Example: A 3 slot CCID reports a single
byte with the following format:
Bit 0 = Slot 0 current state
Bit 1 = Slot 0 changed status
Bit 2 = Slot 1 current state
Bit 3 = Slot 1 changed status
Bit 4 = Slot 2 current state
Bit 5 = Slot 2 changed status
Bit 6 = 0b
Bit 7 = 0b
3.7. CCID Error and Status Code
This section is the extension of standard CCID session 12 to tabulate the possible error codes to be
used in conjunction with the slot error register in each Bulk-IN message. The table summarizes the
CCID defined error codes and the additionally defined error codes for the extended commands used
by ACR89.
Error Name
Error
Code
Possible Cause
CMD_ABORTED FFh Host aborted the current activity
ICC_MUTE FEh CCID timed out while talking to the ICC
XFR_PARITY_ERROR FDh Parity error while talking to the ICC
XFR_OVERRUN FCh Overrun error while talking to the ICC
HW_ERROR FBh An all-inclusive hardware error occurred
BAD_ATR_TS F8h -
BAD_ATR_TCK F7h -
ICC_PROTOCOL_NOT_SUPPORTED F6h -
ICC_CLASS_NOT_SUPPORTED F5h -
PROCEDURE_BYTE_CONFLICT F4h -
DEACTIVATED_PROTOCOL F3h -
BUSY_WITH_AUTO_SEQUENCE F2h Automatic Sequence Ongoing