Active shields: a new approach to shielding global wires

  • Authors:
  • Himanshu Kaul;Dennis Sylvester;David Blaauw

  • Affiliations:
  • University of Michigan, Ann Arbor, MI;University of Michigan, Ann Arbor, MI;University of Michigan, Ann Arbor, MI

  • Venue:
  • Proceedings of the 12th ACM Great Lakes symposium on VLSI
  • Year:
  • 2002

Quantified Score

Hi-index 0.00

Visualization

Abstract

A new shielding scheme, active shielding, is proposed for reducing delays on interconnects. As opposed to conventional (passive) shielding, the active shielding approach helps to speed up signal propagation on a wire by ensuring in-phase switching of adjacent nets. Results show that the active shielding scheme improves performance by up to 16% compared to passive shields and up to 29% compared to unshielded wires. When signal slopes at the end of the line are compared, savings of up to 38% and 27% can be achieved when compared to passive shields and unshielded wires, respectively.