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APEX20K データシート(PDF) 21 Page - Altera Corporation |
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APEX20K データシート(HTML) 21 Page - Altera Corporation |
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21 / 117 page  Altera Corporation 21 APEX 20K Programmable Logic Device Family Data Sheet Figure 9. APEX 20K Interconnect Structure A row line can be driven directly by LEs, IOEs, or ESBs in that row. Further, a column line can drive a row line, allowing an LE, IOE, or ESB to drive elements in a different row via the column and row interconnect. The row interconnect drives the MegaLAB interconnect to drive LEs, IOEs, or ESBs in a particular MegaLAB structure. A column line can be directly driven by LEs, IOEs, or ESBs in that column. A column line on a device’s left or right edge can also be driven by row IOEs. The column line is used to route signals from one row to another. A column line can drive a row line; it can also drive the MegaLAB interconnect directly, allowing faster connections between rows. Figure 10 shows how the FastTrack Interconnect uses the local interconnect to drive LEs within MegaLAB structures. MegaLAB MegaLAB MegaLAB MegaLAB I/O I/O I/O I/O I/O I/O I/O I/O MegaLAB MegaLAB MegaLAB MegaLAB I/O MegaLAB MegaLAB MegaLAB MegaLAB I/O I/O I/O I/O I/O Column Interconnect Column Interconnect Row Interconnect |
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