User's Manual

ACR122L-ACS Design Specification
Version 0.03 19/05/2010
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ACR122L-ACS
5.17. Basic Program Flow for FeliCa Applications
Step 0. Start the application. The first thing is to activate the “SAM Interface”. The ATR of the
SAM (if a SAM is inserted) or a Pseduo-ATR “3B 00” (if no SAM is inserted) will be
returned. In other word, the SAM is always existed from the view of the application.
Step 1. The second thing to do is to change the operating parameters of the PN531. Set the
Retry Time to one.
Step 2. Poll a FeliCa Tag by sending “Direct Transmit” and “Get Response” APDUs (Tag
Polling).
Step 3. If no tag is found, go back to Step 2 until a FeliCa Tag is found.
Step 4. Access the FeliCa Tag by sending APDUs (Tag Read or Write)
Step 5. If there is no any operation with the FeliCa Tag, then go back to Step 2 to poll the other
FeliCa Tag.
..
Step N. Deactivate the “SAM Interface”. Shut down the application.
Remark:
1. The default Retry Time of the PN532 command “InListPassiveTarget” is infinity. Send the APDU
“FF 00 00 00 06 D4 32 05 00 00 00” to change the Retry Time to one.
2. It is recommended to turn off the Antenna if there is no contactless access.
APDU for turning on the Antenna Power = APDU “FF 00 00 00 04 D4 32 01 03”
APDU for turning off the Antenna Power = APDU “FF 00 00 00 04 D4 32 01 02”
FCC Warning:
Any Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.