An organization for optical linkages between integrated circuits

  • Authors:
  • G. Jack Lipovski

  • Affiliations:
  • University of Texas, Austin, Texas

  • Venue:
  • AFIPS '77 Proceedings of the June 13-16, 1977, national computer conference
  • Year:
  • 1977

Quantified Score

Hi-index 0.00

Visualization

Abstract

Conventional integrated circuit packaging techniques which use pins for input-output have several disadvantages, which are becoming increasingly important as more logic is put on a chip. Recent intensive development of optical links for long distance communications suggests that they could be used between integrated circuits, to alleviate the bottleneck created by the connection technology, so that LSI technology can be further exploited. However, the complex linkages between integrated circuit cannot be economically realized by just replacing each wire by an optical link; rather a "bus organization" should be developed so that, by time multiplexing one optical link that threads just once through each integrated circuit, different time slots can be used to realize any necessary transfer. Additionally, the time slices are controlled by a microprogram, so that "wiring changes" can be realized by program changes. A unified treatment of busses is first developed, then two physical realizations of the time-multiplexed bus are described.