The layout synthesizer: an automatic Netlist-to-Layout system

  • Authors:
  • C. C. Chen;S.-L. Chow

  • Affiliations:
  • Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA;Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA

  • Venue:
  • DAC '89 Proceedings of the 26th ACM/IEEE Design Automation Conference
  • Year:
  • 1989

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Abstract

A system generating compacted physical layouts from MOS transistor netlists has been developed. It uses a novel graph-theoretical placement algorithm to simultaneously maximize diffusion sharing and minimize the wiring area. The algorithm is not limited to circuits that have equal numbers of NMOS and PMOS transistors. A special-purpose router using either one-layer or two-layer metal is described. Experimental results for area efficiency and run-time performance are very promising.