Circuit design of routing switches

  title={Circuit design of routing switches},
  author={Guy Lemieux and David M. Lewis},
This paper examines circuit design of buffered routing switches in symmetrical, island-style FPGAs. The effects of switch size, tile length, level-restoring, and slow input slew rates are examined. Two new fanin-based switch designs are used to eliminate nearly all of the increase in delay that arises from fanout with a previous switch design. Alternating between buffers and pass transistors is shown to improve connection delay without fanout by 25%. To take advantage of this, we propose… CONTINUE READING
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