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NFC Digital Protocol - CWI

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<strong>NFC</strong>-A TechnologyRequirements 24: SEL_RES ResponsePoll Mode4.8.2.1 The <strong>NFC</strong> Forum Device MUSTtreat a SEL_RES Response withb3 set to 0b and b6-b7 set to 00bas coming from an <strong>NFC</strong> ForumDevice configured for the Type 2Tag platform, and MUST act asspecified in [ACTIVITY].4.8.2.3 The <strong>NFC</strong> Forum Device MUSTtreat a SEL_RES Response withb3 set to 0b and b6-b7 set to 01bas coming from an <strong>NFC</strong> ForumDevice configured for the Type4A Tag platform, and MUST actas specified in [ACTIVITY].4.8.2.5 The <strong>NFC</strong> Forum Device MUSTtreat a SEL_RES Response withb3 set to 0b and b6-b7 set to 10bas coming from an <strong>NFC</strong> ForumDevice configured for the <strong>NFC</strong>-DEP <strong>Protocol</strong>, and MUST act asspecified in [ACTIVITY].4.8.2.7 The <strong>NFC</strong> Forum Device MUSTtreat a SEL_RES Response withb3 set to 0b and b6-b7 set to 11bas coming from an <strong>NFC</strong> ForumDevice configured for both theType 4A Tag platform and the<strong>NFC</strong>-DEP <strong>Protocol</strong>, and MUSTact as specified in [ACTIVITY].Listen Mode4.8.2.2 The <strong>NFC</strong> Forum Device configuredfor the Type 2 Tag platform MUSTset b6-b7 of the SEL_RESResponse to 00b in the last cascadelevel (i.e., when the <strong>NFC</strong>ID1 iscomplete).4.8.2.4 The <strong>NFC</strong> Forum Device configuredfor the Type 4A Tag platformMUST set b6-b7 of the SEL_RESResponse to 01b in the last cascadelevel (i.e., when the <strong>NFC</strong>ID1 iscomplete).4.8.2.6 The <strong>NFC</strong> Forum Device configuredfor the <strong>NFC</strong>-DEP <strong>Protocol</strong> MUSTset b6-b7 of the SEL_RESResponse to 10b in the last cascadelevel (i.e., when the <strong>NFC</strong>ID1 iscomplete).4.8.2.8 The <strong>NFC</strong> Forum Device configuredfor both the Type 4A Tag platformand the <strong>NFC</strong>-DEP <strong>Protocol</strong> MUSTset b6-b7 of the SEL_RESResponse to 11b in the last cascadelevel (i.e., when the <strong>NFC</strong>ID1 iscomplete).4.9 SLP_REQUse the SLP_REQ Command to put the <strong>NFC</strong> Forum Device in Listen Mode in the SLEEP state(see [ACTIVITY] for the <strong>NFC</strong> Forum Device state machine).4.9.1 SLP_REQ CommandThe SLP_REQ Command consists of 2 bytes. Table 18 specifies the format of the SLP_REQCommand.Byte 1 Byte 250h00hTable 18: Format of SLP_REQ Command<strong>NFC</strong> <strong>Digital</strong> <strong>Protocol</strong> Page 36

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