DocumentCode :
2662847
Title :
A Pseudo-Synchronous Implementation Flow for WCHB QDI Asynchronous Circuits
Author :
Thonnart, Yvain ; Beigne, Edith ; Vivet, Pascal
Author_Institution :
LETI, CEA, Grenoble, France
fYear :
2012
fDate :
7-9 May 2012
Firstpage :
73
Lastpage :
80
Abstract :
In this paper, we present a performance-oriented implementation flow for WCHB QDI asynchronous circuits aiming to be fully compatible with conventional EDA tools for synchronous designs. Starting from a simple standard-cell library for asynchronous logic, this flow builds pseudo-synchronous models of the cells. With these models, a simple set of pseudo-synchronous timing constraints can be given to industrial EDA tools to benefit from their optimization strategies, through all steps from synthesis to place & route. This flow was benchmarked against regular asynchronous implementation relying on maximum delay constraints. Pseudo-synchronous modeling allows achieving significantly better performance and regularity than asynchronous modeling, for faster run times and reduced design effort. The proposed flow was used for the physical implementation of a 20-node network-on-chip in the ST Microelectronics 65nm low-power technology. It achieves an end-to-end asynchronous throughput of 850Mflit/s in typical conditions, making it faster than all connected synchronous IPs.
Keywords :
asynchronous circuits; delays; electronic design automation; logic CAD; network-on-chip; EDA tool; STMicroelectronics low-power technology; WCHB QDI asynchronous circuit; asynchronous logic; electronic design automation tool; end-to-end asynchronous throughput; maximum delay constraint; network-on-chip; optimization strategy; performance-oriented implementation flow; pseudosynchronous implementation flow; pseudosynchronous timing constraint; simple standard-cell library; size 65 nm; synchronous IP; Asynchronous circuits;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Asynchronous Circuits and Systems (ASYNC), 2012 18th IEEE International Symposium on
Conference_Location :
Lyngby
ISSN :
1522-8681
Print_ISBN :
978-1-4673-1360-5
Type :
conf
DOI :
10.1109/ASYNC.2012.29
Filename :
6243884
Link To Document :
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