User's Manual

ACR122L-ACS Design Specification
Version 0.03 19/05/2010
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18
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ACR122L
-
ACS
Pseudo APDUs for Contactless Interface and Peripherals Control
ACR122L comes with two primitive commands for this purpose. <Class 0xFF>
**Remark: For all the Pseduo APDUs below (except Section 5.9 “GET the Firmware Version of
the Reader” and “5.8 Pseduo APDU for changing the communication speed”), STX MUST
EQUAL to 0x02 and ETX MUST EQUAL to 0x03
5.1. Direct Transmit
To send a Pseudo APDU (PN532 and TAG Commands), and the Response Data will be returned.
Table 1.0A: Direct Transmit Command Format (Length of the PN532_TAG Command + 5 Bytes)
Command Class INS P1 P2 Lc Data In
Direct
Transmit
0xFF 0x00 0x00 0x00 Number
of Bytes
to send
PN532_TAG
Command
Lc: Number of Bytes to Send (1 Byte)
Maximum 255 bytes
Data In: PN532_TAG Command
The data to be sent to the PN532 and Tag.
Table 1.0B: Direct Transmit Response Format (Response Length + 2 Bytes)
Response Data Out
Result PN532_TAG
Response
SW1 SW2
Data Out: PN532_TAG Response
PN532_TAG Response returned by the reader.
Data Out: SW1 SW2
Status Code returned by the reader.
Table 1.0C: Status Code
Results SW1 SW2 Meaning
Success 90 00 The operation is completed successfully.
Error 63 00 The operation is failed.
Time Out Error 63 01 The PN532 does not response.
Checksum Error 63 27 The checksum of the Response is
wrong.
Parameter Error 63 7F The PN532_TAG Command is wrong.