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NFC Digital Protocol - CWI

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<strong>NFC</strong>-A TechnologyFDT A,POLL1 bd1 bd 1 bdLogic "1"transmitted by<strong>NFC</strong> Forum Devicein Listen ModeEnd of Sequence(EoS) transmitted by<strong>NFC</strong> Forum Devicein Listen ModeStart of Frame (SoF)transmitted by<strong>NFC</strong> Forum Devicein Poll Mode(a) Last transmitted data bit is Logic "1"FDT A,POLL1 bd1 bd 1 bdLogic "0"transmitted by<strong>NFC</strong> Forum Devicein Listen ModeEnd of Sequence(EoS) transmitted by<strong>NFC</strong> Forum Devicein Listen ModeStart of Frame (SoF)transmitted by<strong>NFC</strong> Forum Devicein Poll Mode(b) Last transmitted data bit is Logic "0"Figure 10: FDT A,POLLPoll ModeRequirements 30: FDT A,POLL,MINListen Mode4.10.2.1 Following the end of aListen Frame, the <strong>NFC</strong>Forum Device MUSTwait at least forFDT A,POLL,MIN beforetransmitting the start of anew Poll Frame. Referto Appendix A.1 for thevalue of FDT A,POLL,MIN .4.10.2.2 The <strong>NFC</strong> Forum Device MUST be ready toreceive the start of a new Poll Frame no laterthan FDT A,POLL,MIN after the end of a ListenFrame.If the start of a new Poll Frame is received beforeFDT A,POLL,MIN , then the <strong>NFC</strong> Forum Device MAY treat thisas a Transmission Error.A specific value for FDT A,POLL,MIN is defined for the re-activation of the <strong>NFC</strong> Forum Device inListen Mode following a DSL_RES Response (see Section 14.9.2), an RLS_RES Response (seeSection 14.10.2), or an S(DESELECT) Response (see Section 13.2.7).<strong>NFC</strong> <strong>Digital</strong> <strong>Protocol</strong> Page 41

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