ACS ACR122L, User Manual

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ACR122L – Communication Protocol
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Version 1.03
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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 activate the SAM Interface 1 slot 0 (default), sequence number = 1, 5 V card.
HOST -> 02 62 00 00 00 00 00 01 01 00 00 [Checksum] 03
RDR -> 02 00 00 03
RDR -> 02 80 0D 00 00 00 00 01 00 00 00 3B 2A 00 80 65 24 B0 00 02 00 82 90 00 [Checksum]
03
The ATR = 3B 2A 00 80 65 24 B0 00 02 00 82; SW1 SW2 = 90 00
Example 2: To activate the SAM Interface 2 slot 0 (default), sequence number = 1, 5 V card.
HOST -> 12 62 00 00 00 00 00 01 01 00 00 [Checksum] 13
RDR -> 12 00 00 13
RDR ->
12
80 0D 00 00 00 00 01 00 00 00 3B 2A 00 80 65 24 B0 00 02 00 82 90 00 [Checksum]
13
The ATR = 3B 2A 00 80 65 24 B0 00 02 00 82; SW1 SW2 = 90 00
Example 3:
To activate the SAM Interface 3 slot 0 (default), sequence number = 1, 5 V card.
HOST -> 22 62 00 00 00 00 00 01 01 00 00 [Checksum] 23
RDR -> 22 00 00 23
RDR -> 22 80 0D 00 00 00 00 01 00 00 00 3B 2A 00 80 65 24 B0 00 02 00 82 90 00 [Checksum]
23
The ATR = 3B 2A 00 80 65 24 B0 00 02 00 82; SW1 SW2 = 90 00
5.2. Deactivating the SAM Interface
ACR122L Command Frame Format
STX
Bulk-OUT Header
(HOST_to_RDR_IccPowerOff)
Parameters Checksum ETX
1 Byte 10 Bytes 0 Byte 1 Byte 1 Byte