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EP1C12F100I8ES Datasheet(PDF) 46 Page - Altera Corporation |
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EP1C12F100I8ES Datasheet(HTML) 46 Page - Altera Corporation |
46 / 104 page ![]() 2–40 Altera Corporation Preliminary January 2007 Cyclone Device Handbook, Volume 1 Figure 2–27. Cyclone IOE Structure Note to Figure 2–27: (1) There are two paths available for combinatorial inputs to the logic array. Each path contains a unique programmable delay chain. The IOEs are located in I/O blocks around the periphery of the Cyclone device. There are up to three IOEs per row I/O block and up to three IOEs per column I/O block (column I/O blocks span two columns). The row I/O blocks drive row, column, or direct link interconnects. The column I/O blocks drive column interconnects. Figure 2–28 shows how a row I/O block connects to the logic array. Figure 2–29 shows how a column I/O block connects to the logic array. Output Register Output Combinatorial input (1) Input OE Register OE Input Register Logic Array DQ DQ DQ |
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