The Nostrum Backbone - a Communication Protocol Stack for Networks on Chip

  • Authors:
  • Mikael Millberg;Erland Nilsson;Rikard Thid;Shashi Kumar;Axel Jantsch

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • VLSID '04 Proceedings of the 17th International Conference on VLSI Design
  • Year:
  • 2004

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Abstract

We propose a communication protocol stack to be used inNostrum, our Network on Chip (NoC) architecture. In orderto aid the designer in the selection process of what parts ofprotocols, and their respective facilities, to include, a layeredapproach to communication is taken. A nomenclaturefor describing the individual layers' interfaces and servicedefinitions of the layers in the protocol stack is suggestedand used. The concept includes support for best effort trafficpacket delivery as well as support for guaranteed bandwidthtraffic, using virtual circuits. Furthermore anapplication to NoC adapter is defined, as part of theResource to Network Interface, and is used to communicatebetween the Nostrumprotocol stack and the application.An industrial example has been implemented, simulated,and the results justifies the suggested layered approach.