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MB89R112 датащи(PDF) 28 Page - RAMXEED LIMITED |
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MB89R112 датащи(HTML) 28 Page - RAMXEED LIMITED |
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28 / 49 page ![]() MB89R112 28 DS411-00004-3v0-E 2-8. Lock AFI command On receiving the Lock AFI command, the transponder locks (write disable) permanently the data of AFI. The transponder performs verification after writing and returns an error code if the writing has failed. If the Option_flag (bit 7) is “0”, the transponder shall return its response when it has completed the lock operation starting after “t1nom (320.9 s) a multiple of 4096/fc (302.1 s)” with total tolerance of 32/fc (2.4 s) and latest within 20 ms. If it is “1”, transponder shall wait for the reception of an EOF from the reader/ writer and upon such reception still return its response (However, if an EOF is not sent within 38 ms, the time-out occurs and the transponder can receive another command) . Once the Lock AFI command has been received, the data of AFI cannot be changed by the any command. Request [Request from the reader/writer to the transponder] Response [Response from the transponder to the reader/writer] (1) When Error_flag set (2) When Error_flag not set SOF Flag Command (Lock AFI) UID (Addressed mode) CRC EOF 8 bits 8 bits (“28H”) 64 bits 16 bits SOF Flag Error code CRC EOF 8 bits (“01H”) 8 bits 16 bits SOF Flag CRC EOF 8 bits (“00H”) 16 bits |
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