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CLRC663 Datasheet(PDF) 17 Page - NXP Semiconductors |
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CLRC663 Datasheet(HTML) 17 Page - NXP Semiconductors |
17 / 132 page ![]() CLRC663 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet COMPANY PUBLIC Rev. 3.3 — 3 April 2012 171133 17 of 132 NXP Semiconductors CLRC663 Contactless reader IC 8.3.7.1 Passive communication mode Passive communication mode means that the target answers to an initiator command in a load modulation scheme. The initiator is active meaning generating the RF field. The contactless UART of CLRC663 and a dedicated host controller are required to handle the ISO/IEC 18092 passive initiator protocol. Fig 11. Passive communication mode Table 12. Communication overview for Passive communication mode Communication direction 106 kbit/s 212 kbit/s 424 kbit/s Initiator target According to ISO/IEC 14443A 100 % ASK, Modified Miller Coded According to FeliCa, 8 % to 30 % ASK Manchester Coded Target initiator According to ISO/IEC 14443A subcarrier load modulation, Manchester Coded According to FeliCa, > 12 % ASK Manchester Coded host NFC INITIATOR powered to generate RF field 1. initiator starts communication at selected transfer speed 2. targets answers using load modulated data at the same transfer speed host NFC TARGET powered for digital processing 001aan217 |
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