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EP1C6Q144I8 数据表(PDF) 18 Page - Altera Corporation |
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EP1C6Q144I8 数据表(HTML) 18 Page - Altera Corporation |
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18 / 94 page  18 Altera Corporation Cyclone FPGA Family Data Sheet Preliminary Information The R4 interconnects span four LABs, or two LABs and one M4K RAM block. These resources are used for fast row connections in a four-LAB region. Every LAB has its own set of R4 interconnects to drive either left or right. Figure 9 shows R4 interconnect connections from an LAB. R4 interconnects can drive and be driven by M4K memory blocks, PLLs, and row IOEs. For LAB interfacing, a primary LAB or LAB neighbor can drive a given R4 interconnect. For R4 interconnects that drive to the right, the primary LAB and right neighbor can drive on to the interconnect. For R4 interconnects that drive to the left, the primary LAB and its left neighbor can drive on to the interconnect. R4 interconnects can drive other R4 interconnects to extend the range of LABs they can drive. R4 interconnects can also drive C4 interconnects for connections from one row to another. Figure 9. R4 Interconnect Connections Notes to Figure 9: (1) C4 interconnects can drive R4 interconnects. (2) This pattern is repeated for every LAB in the LAB row. The column interconnect operates similarly to the row interconnect. Each column of LABs is served by a dedicated column interconnect, which vertically routes signals to and from LABs, M4K memory blocks, and row and column IOEs. These column resources include: ■ LUT chain interconnects within an LAB ■ Register chain interconnects within an LAB ■ C4 interconnects traversing a distance of four blocks in an up and down direction Primary LAB (2) R4 Interconnect Driving Left Adjacent LAB can Drive onto Another LAB's R4 Interconnect C4 Column Interconnects (1) R4 Interconnect Driving Right LAB Neighbor LAB Neighbor |
类似零件编号 - EP1C6Q144I8 |
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类似说明 - EP1C6Q144I8 |
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