ACS ACR122L, User Manual

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ACR122L – Communication Protocol
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Version 1.03
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ACR122L Response Frame Format
For SAM Interface 1, STX = 02h and ETX = 03
For SAM Interface 2, STX = 12h and ETX = 13h
For SAM Interface 3, STX = 22h and ETX = 23h
RDR_to_HOST_DataBlock Format
Offset Field Size Value Description
0 bMessageType 1 80h
Indicates that a data block is
being sent from the ACR122L.
1
dwLength
<LSB .. MSB>
4 N Size of abData field (N Bytes).
5
bSlot
1 Same as Bulk-OUT Identifies the slot number for
this command.
6
bSeq
1 Same as Bulk-OUT Sequence number for
corresponding command.
7 bStatus 1
8 bError 1
9 bChainParameter 1
Example 1:
To send an APDU “80 84 00 00 08” to the SAM Interface 1 slot 0 (default), sequence
number = 3.
HOST ->
02 6F 05 00 00 00 00 03 00 00 00 80 84 00 00 08 [Checksum] 03
RDR -> 02 00 00 03
RDR -> 02 80 0A 00 00 00 00 03 00 00 00 E3 51 B0 FC 88 AA 2D 18 90 00 [Checksum] 03
Response = E3 51 B0 FC 88 AA 2D 18; SW1 SW2 = 90 00
Example 2:
To send an APDU “80 84 00 00 08” to the SAM Interface 2 slot 0 (default), sequence
number = 3.
HOST ->
12 6F 05 00 00 00 00 03 00 00 00 80 84 00 00 08 [Checksum] 13
RDR -> 12 00 00 13
RDR -> 12 80 0A 00 00 00 00 03 00 00 00 E3 51 B0 FC 88 AA 2D 18 90 00 [Checksum] 13
Response = E3 51 B0 FC 88 AA 2D 18; SW1 SW2 = 90 00
STX
Bulk-IN Header
(RDR_to_HOST_DataBlock)
abData Checksum ETX
1 Byte 10 Bytes
N Bytes
(ATR)
1 Byte 1 Byte