Using sparse crossbars within LUT

    FPGA, pp. 59-68, 2001.

    Cited by: 210|Bibtex|Views13|Links
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    Keywords:
    lookup tablecpldcritical pathfpga

    Abstract:

    In FPGAs, the internal connections in a cluster of lookup tables (LUTs) are often fully-connected like a full crossbar. Such a high degree of connectivity makes routing easier, but has significant area overhead. This paper explores the use of sparse crossbars as a switch matrix inside the clusters between the cluster inputs and the LUT in...More

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