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EM4223 Datasheet(PDF) 13 Page - EM Microelectronic - MARIN SA |
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EM4223 Datasheet(HTML) 13 Page - EM Microelectronic - MARIN SA |
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13 / 29 page  R EM4223 Copyright © 2005, EM Microelectronic-Marin SA 13 www.emmicroelectronic.com Command : Next_Slot Initial State Criteria Action New State Ready None None Ready Quiet None None Quiet Tag has answered in previous slot, AND Signature matches AND 1 st low pulse of Next_Slot command was received in the acknowledgement time window. None Quiet Tag is in ISO Mode and has NOT answered in previous slot, OR Signature does not match OR 1 st low pulse of Next_Slot command was not received in the acknowledgement time window. The tag shall increment its slot counter and send its response if slot counter matches the chosen slot. Round_Active Round_Active Tag is in FST Mode and has NOT answered in previous slot, OR Signature does not match OR 1 st low pulse of Next_Slot command was not received in the acknowledgement time window. The tag will automatically increment is Current Slot Counter at internally determined times and send its response if the its Current Slot Counter matches its Selected Slot Register. Round_Active ISO Mode The tag shall increment its slot counter and send its response if slot counter matches the chosen slot. Round_active Round_Standby FST Mode The tag resumes the FST Arbitration process and will automatically increment is Current Slot Counter at internally determined times and send its response if the its Current Slot Counter matches its Selected Slot Register. Round_active Table 12 - Tag state transitions for Next_Slot Command : Close_slot Initial State Criteria Action New State Ready None None Ready Quiet None None Quiet ISO Mode The tag shall increment its slot counter and send its response if slot counter matches the chosen slot. Round_Active Round_Active FST Mode The tag will automatically increment is Current Slot Counter at internally determined times and send its response if the its Current Slot Counter matches its Selected Slot Register. Round_Active ISO Mode The tag shall increment its slot counter and send its response if slot counter matches the chosen slot. Round_active Round_Standby FST Mode The tag resumes the FST Arbitration process and will automatically increment is Current Slot Counter at internally determined times and send its response if the its Current Slot Counter matches its Selected Slot Register. Round_active Table 13 - Tag state transitions for Close_Slot Command : Reset_To_Ready Initial State Criteria Action New State Ready None None Ready Quiet None None Ready Round_Active None None Ready Round_Standby None None Ready Table 14 - Tag state transitions for Reset_To_Ready |
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