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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LRI2K Datenblatt(PDF) 40 Page - STMicroelectronics |
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LRI2K Datenblatt(HTML) 40 Page - STMicroelectronics |
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40 / 89 page  Anticollision LRI2K 40/89 Figure 39. Principle of comparison between the mask, the slot number and the UID The AFI field is present if the AFI_flag is set. The pulse is generated according to the definition of the EOF in ISO/IEC 15693-2. The first slot starts immediately after the reception of the request EOF. To switch to the next slot, the VCD sends an EOF. The following rules and restrictions apply: ● if no LRI2K answer is detected, the VCD may switch to the next slot by sending an EOF, ● if one or more LRI2K answers are detected, the VCD waits until the complete frame has been received before sending an EOF for switching to the next slot. AI06682 Mask value received in the Inventory command 0000 0100 1100 1111 b 16 bits The Mask value less the padding 0s is loaded into the Tag comparator 100 1100 1111 b 11 bits The Slot counter is calculated xxxx Nb_slots_flags = 0 (16 slots), Slot Counter is 4 bits The Slot counter is concatened to the Mask value xxxx 100 1100 1111 b Nb_slots_flags = 0 15 bits The concatenated result is compared with the least significant bits of the Tag UID. xxxx xxxx ..... xxxx xxxx x xxx xxxx xxxx xxxx 64 bits LSB MSB b LSB MSB LSB MSB LSB MSB b0 b63 Compare Bits ignored UID 4 bits |
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