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3.6.2Select
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ISO/IEC14443AProtocol
RequestPacket:
0111000304A20424923A29110000380000(allbytesarecontinuous;spacesareaddedfor
clarity)
FieldContentsComment
SOF01Startofframe
PacketLength11Packetlength=17bytes
Constant00
BeginDataPayload0304Startofdatapayload
FirmwareCmdA2Select
UID0424923A2911000038CompleteTagUID(04249229110000)
[3Aand38areblockcharacterchecks(BCC)]
EOF0000Endofframe
Select(TagResponse)
14443ASelect.
80T40E(4400)80T40E(04)80T40E[00]
Shownareseveraltagresponseswiththefollowingformat:
IRQStatusRegister(<TagresponsewithnoCRC>)
IRQStatusRegister[<TagresponsewithCRC>]
Atagresponsewith"()"indicatesaresponsewithnoCRC,while
Atagresponsewith"[]"indicatesaresponsewithCRC.
80T40E(4400)ATQA(answertorequest,typeA),UIDsizesingle,nobit-frameanticollision
80T40E(04)SAK(selectacknowledge,typeA),cascadebitset
80T40E[00]UIDreceivedwithnoerror(tagentersACTIVEstate)
SLOU192CNovember2006RevisedDecember2008EVMSoftware63
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