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<strong>NFC</strong>-A TechnologyFDT A,LISTEN1 bdLogic "1" transmittedby <strong>NFC</strong> ForumDevice in Poll Mode1 bd 1 bdEoF transmitted by<strong>NFC</strong> Forum Devicein Poll ModeSoF transmitted by<strong>NFC</strong> Forum Devicein Listen Mode(a) Last bit before EoF is Logic "1"FDT A,LISTEN1 bdLogic "0" transmittedby <strong>NFC</strong> ForumDevice in Poll Mode1 bd 1 bdEoF transmitted by<strong>NFC</strong> Forum Devicein Poll ModeSoF transmitted by<strong>NFC</strong> Forum Devicein Listen Mode(b) Last bit before EoF is Logic "0"Figure 8: FDT A,LISTENTable 19 shows the values FDT A,LISTEN can take depending on the logic value of the last data bittransmitted by the <strong>NFC</strong> Forum Device in Poll Mode. The value of n is an integer and depends onthe Command type transmitted within a Poll Frame. Section 4.5 defines the commands.Table 19: FDT A,LISTEN and Logic State of Last Data BitLogic StateFDT A,LISTEN“0” n bd + 20/f C“1” n bd + 84/f CFDT A,LISTEN,MIN follows the equations in Table 19 with a specific value of n, as shown inTable 20.Command TypeALL_REQSENS_REQSDD_REQSEL_REQAll other Commands ≥ 9Table 20: FDT A,LISTEN,MIN and Command Typen9<strong>NFC</strong> <strong>Digital</strong> <strong>Protocol</strong> Page 38
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