An asynchronous fpga logic cell implementation

  • Authors:
  • Atabak Mahram;Mehrdad Najibi;Hossein Pedram

  • Affiliations:
  • Amirkabir University of Technology, Tehran, Iran;Amirkabir University of Technology, Tehran, Iran;Amirkabir University of Technology, Tehran, Iran

  • Venue:
  • Proceedings of the 17th ACM Great Lakes symposium on VLSI
  • Year:
  • 2007

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Abstract

We present a new method for implementing asynchronous FPGA logic cells which are configurable at pipeline level. Previous implementations of the basic elements of these logic cells were based on the pre-charged logic implementation which imposes some limitations on the size of the logic cell due to the stacking problem. To overcome this limitation we propose a novel method for implementing these templates. Our method uses standard single-rail computational circuits. It does not have any stacking problem and is not limited in size. The results show that a 4-input logic cell implemented by this method outperforms a previous 3-input logic cell by 16% in speed and 29% in power with a negligible area overhead.