NFC Digital Protocol - CWI

Type 4B Tag PlatformParam 4The Param 4 byte codes the DID as shown in Table 78.Table 78: Format of Param 4 of the ATTRIB Commandb8 b7 b6 b5 b4 b3 b2 b1 Meaning0 0 0 0 RFUx x x x DIDRequirements 158: Format of Param 4 of the ATTRIB CommandPoll Mode12.6.1.18 The NFC Forum Device MUST setthe DID field to a value between 0and 14.Listen Mode12.6.1.19 The NFC Forum Device MUST beready to receive a DID field with avalue between 0 and 14.Listen ModeRequirements 159: Listen Mode Handling of RFU Value of DID12.6.1.20 The NFC Device in Listen Mode MUST ignore and not answer the ATTRIBcommand when received value of DID = 15.Higher layer – INFThe Higher layer – INF field may include any higher layer Command transferable as INF field inthe Half-Duplex Block Transmission protocol, as defined in Section 13.Requirements 160: Higher Layer – INFPoll ModeAn NFC Forum Device in Poll Mode MAYinclude a higher layer Command in the Higherlayer – INF field.Listen Mode12.6.1.21 The NFC Forum Device MUST beready to receive an ATTRIBCommand with or without Higherlayer – INF field.12.6.2 ATTRIB ResponseAn NFC Forum Device in Listen Mode answers to an ATTRIB Command with the formatdescribed in Table 79. A Valid Response to an ATTRIB Command is the means for an NFCForum Device in Poll Mode to verify that activation of the NFC Forum Device in Listen Modehas been successful.Byte 1Table 79: ATTRIB Response FormatByte 2 – 2+n-1MBLI DID Higher layer – ResponseNFC Digital Protocol Page 125