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A Flexible Communication Scheme for Rationally-Related Clock Frequencies
KTH, School of Information and Communication Technology (ICT), Electronic Systems.
KTH, School of Information and Communication Technology (ICT), Electronic Systems.ORCID iD: 0000-0003-0565-9376
2009 (English)In: 2009 IEEE INTERNATIONAL CONFERENCE ON COMPUTER DESIGN   , 2009, 109-116 p.Conference paper (Refereed)
Abstract [en]

As a replacement for the fast-fading Globally-Synchronous model, we have defined a flexible design style for SoCs, called GRLS, for Globally-Ratiochronous, Locally-Synchronous, which does not rely on global synchronization and is based on using rationally-related clock frequencies derived from the same source. In this paper, using the special periodical properties of rationally-related systems, we build a latency-insensitive, maximal-throughput, low-overhead communication method, based on the idea of using both clock edges to sample data at the Receiver. The validity of the method and its resistance to non-idealities such as jitter, misalignments and clock drifts are formally proven while experimental results including overhead are presented for 90 nm technology. Despite allowing much greater flexibility, the overhead of our method is comparable to that of state-of-the-art mesochronous communication techniques. We also show performances, complexity and overhead improvements over all other approaches that have so far been proposed for rationally-related clock frequencies.

Place, publisher, year, edition, pages
2009. 109-116 p.
, Proceedings IEEE International Conference on Computer Design, ISSN 1063-6404
Keyword [en]
90 nm technology, Clock drift, Clock frequency, Flexible communication, Flexible designs, Global synchronization, Mesochronous communication, Non-idealities, Overhead communications, Related systems, Sample data, Design, Jitter
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-29865DOI: 10.1109/ICCD.2009.5413166ISI: 000277251900018ScopusID: 2-s2.0-77951015303ISBN: 978-1-4244-5029-9OAI: diva2:399380
27th IEEE International Conference on Computer Design, Lake Tahoe, CA, OCT 04-07, 2009
QC 20110222Available from: 2011-02-22 Created: 2011-02-17 Last updated: 2011-02-22Bibliographically approved

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