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EP20K1500E Datasheet(PDF) 10 Page - Altera Corporation |
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EP20K1500E Datasheet(HTML) 10 Page - Altera Corporation |
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10 / 117 page  10 Altera Corporation APEX 20K Programmable Logic Device Family Data Sheet APEX 20K devices provide two dedicated clock pins and four dedicated input pins that drive register control inputs. These signals ensure efficient distribution of high-speed, low-skew control signals. These signals use dedicated routing channels to provide short delays and low skews. Four of the dedicated inputs drive four global signals. These four global signals can also be driven by internal logic, providing an ideal solution for a clock divider or internally generated asynchronous clear signals with high fan-out. The dedicated clock pins featured on the APEX 20K devices can also feed logic. The devices also feature ClockLock and ClockBoost clock management circuitry. APEX 20KE devices provide two additional dedicated clock pins, for a total of four dedicated clock pins. MegaLAB Structure APEX 20K devices are constructed from a series of MegaLABTM structures. Each MegaLAB structure contains a group of logic array blocks (LABs), one ESB, and a MegaLAB interconnect, which routes signals within the MegaLAB structure. The EP20K30E device has 10 LABs, EP20K60E through EP20K600E devices have 16 LABs, and the EP20K1000E and EP20K1500E devices have 24 LABs. Signals are routed between MegaLAB structures and I/O pins via the FastTrack Interconnect. In addition, edge LABs can be driven by I/O pins through the local interconnect. Figure 2 shows the MegaLAB structure. Figure 2. MegaLAB Structure ESB MegaLAB Interconnect Local Interconnect To Adjacent LAB or IOEs LABs LE1 LE2 LE3 LE4 LE5 LE6 LE7 LE8 LE9 LE10 LE1 LE2 LE3 LE4 LE5 LE6 LE7 LE8 LE9 LE10 LE1 LE2 LE3 LE4 LE5 LE6 LE7 LE8 LE9 LE10 |
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