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DS2406P датащи(PDF) 11 Page - Dallas Semiconductor |
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DS2406P датащи(HTML) 11 Page - Dallas Semiconductor |
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11 / 30 page ![]() DS2406 11 of 30 Memory Function Flow Chart (continued) Figure 7 Spare Vertical Write Memory ? TA1(T7:T0), TA2 (T15:T8) Bus Master TX Address = (T15:T0) DS2406 sets Memory Y Address, Data (1st pass); CRC16 of Bus Master RX CRC16 of Command, Address, Data (subsequent passes) Data Byte (D7:D0) Bus Master TX CRC Correct ? Program Pulse Bus Master TX pad to Data EPROM DS2406 copies Scratch- from Data EPROM Bus Master RX Byte EPROM Byte Correct ? End of Data Mem. ? Address Counter DS2406 increments into CRC Generator DS2406 loads new Address R To Figure 7 3rd Part 0Fh N From Figure 7 1st Part N Write Status ? TA1(T7:T0), TA2 (T15:T8) Bus Master TX Address = (T15:T0) DS2406 sets Memory S Y Data Byte (D7:D0) Bus Master TX CRC Correct ? Program Pulse Bus Master TX pad to Status EPROM DS2406 copies Scratch- from Status EPROM Bus Master RX Byte EPROM Byte Correct ? Address < 7 ? Address Counter DS2406 increments into CRC Generator DS2406 loads new Address 55h Address, Data (1st pass); CRC16 of Bus Master RX CRC16 of Command, Address, Data (subsequent passes) Reset Pulse Bus Master TX Presence Pulse DS2406 TX Byte From Bus Master RX Volatile Status Scratchpad to DS2406 copies Volatile Status Legend: Decision made by Bus Master Decision made by DS2406 Bus Master TX FFh or Program Pulse Y N Y N Y N Y N Y N Y N |
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