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Implementation of high speed data sets with microprogrammable data processors

Published:19 November 1978Publication History
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Abstract

Modern high speed data sets (or Modems) are usually required to perform a great deal of digital signal processing to maintain acceptable error rates for worst-case channel conditions. Previously, this digital processing task was implemented with dedicated SSI/MSI TTL circuits. With the advent of high speed microprogrammable units (ALU's, sequencers, etc.), it has become possible to replace a random logic design with a functionally equivalent microprogrammed design. This results in better density, lower power requirements, and greater versatility and flexibility. The microprogrammed system described is designed to provide accurate emulation of an existing data set while maintaining the advantages of microprogrammed architecture versus random logic.

References

  1. 1 AMD, Am2900 Bipolar Microprocessor Family, 1976.Google ScholarGoogle Scholar
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  3. 3 Hedges, T.M. and McCroskey, W.K., Modules for Simplified Implementation of Microprogramming and Common Computer Functions, Applied Engineering Laboratory, Engineering Experiment Station, Georgia Institute of Technology, Atlanta, Georgia, supported by Naval Electronics Laboratory Center through RADC Post-Doctoral Program, Contract No. F30602-75-C-0118, presented at 1976 Government Microcircuit Applications Conference (GOMAC).Google ScholarGoogle Scholar
  4. 4 Lucky, R.W., Automatic Equalization for Digital Communication, The Bell System Technical Journal, April 1965.Google ScholarGoogle Scholar
  5. 5 United States Patent 3 925 611, Combined Scrambler-Encoder for Multilevel Digital Data, Inventor: Thomas Mann Dennis, Assignee: Bell Telephone Laboratories, Inc., Murray Hill, N.J., Filed: Aug. 12, 1974, Granted: Dec. 9, 1975.Google ScholarGoogle Scholar
  6. 6 Lucky, R.W. and Rudin, H.R., An Automatic Equalizer for General-Purpose Communication Channels, The Bell System Technical Journal, Nov. 1967.Google ScholarGoogle ScholarCross RefCross Ref

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  1. Implementation of high speed data sets with microprogrammable data processors

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          • Published in

            cover image ACM SIGMICRO Newsletter
            ACM SIGMICRO Newsletter  Volume 9, Issue 4
            Dec. 1978
            160 pages
            ISSN:1050-916X
            DOI:10.1145/1014198
            Issue’s Table of Contents

            Copyright © 1978 Authors

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            Association for Computing Machinery

            New York, NY, United States

            Publication History

            • Published: 19 November 1978

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