Building asynchronous routers with independent sub-channels

Wei Song, Doug Edwards

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    Network-on-chip (NoC) has been used as the new on- chip communication paradigm. Asynchronous NoCs are power efficient and robust to process variation but they are slow. One reason for the low speed is the way that asynchronous routers use to build wide channels. To meet the bandwidth requirement, current routers broaden their channels by synchronizing multiple sub-channels. The C-element and buffer trees introduced by the synchronization increase the cycle period. A new router is proposed to use multiple independent sub-channels to transmit data. Since the synchronization is removed, the cycle period of all sub-channels are reduced speeding up the network. Two routers, one using multiple independent sub-channels and one using the synchronized wide channel, are implemented at the layout level. The simulation results show that the new router using multiple independent sub-channels reduces the router latency and the cycle period. ©2009 IEEE.
    Original languageEnglish
    Title of host publication2009 International Symposium on System-on-Chip - Proceedings, SoC 2009|Int. Symp. System-on-Chip - Proc., SoC
    Place of PublicationUSA
    Number of pages3
    ISBN (Print)9781424444670
    Publication statusPublished - 2009
    Event2009 International Symposium on System-on-Chip, SoC 2009 - Tampere
    Duration: 1 Jul 2009 → …


    Conference2009 International Symposium on System-on-Chip, SoC 2009
    Period1/07/09 → …


    • buffer circuits , integrated circuit layout , network-on-chip


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