Multi-Bit Flip-Flop Replacement Method Optimization and Synthesis Impact

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Recently, Multi-bit flip-flop usage has shown its advantage in dynamic power saving in nowadays commercial electronic design. This paper present a more comprehensive comparison of chip-level synthesis result by using single-bit flip-flop and multi-bit flip-flop standard cell and except for analyzing the power and area benefit from replacement under the maximum speed, this paper give a compromise solution to solve that using multi-bit flip-flop cannot run as the fastest as single-bit with even large area. The trade-off between a multi-bit flip-flop cell driving strength and its area when designing multi-bit standard cell that will greatly influence synthesis result as speed arise are also mentioned. Finally, this research about MBFF further usage improvements may be helpful for designers to know how to take full advantage of multi-bit flip-flops to bring about the wanted benefit.

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1239-1243

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December 2014

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] D. Liu and C. Svensson, Power consumption estimation in CMOS VLSI chips, IEEE Solid-State Circuits, vol. 29, no. 6, p.663–670, Jun. (1994).

DOI: 10.1109/4.293111

Google Scholar

[2] Pei-Hsin Ho, Industrail clock design, in Proceedings of the ACM International Symposium on Physical Design(ISPD), 2009, pp.139-140.

Google Scholar

[3] Y. Kretchmer, Using multibit register inference to save area and power, , EE Times Asia, May (2001).

Google Scholar

[4] R. P. Pokala, R. A. Feretich, and R. W. McGuffin, Physical synthesis for performance optimization, in Proc. IEEE Int. ASIC Conf. Exhibit. Sep. 1992, p.34–37.

DOI: 10.1109/asic.1992.270312

Google Scholar

[5] M.P. -H. Lin, C, -C. Hsu,Y. -T. Chang, Recnt research in clock power saving with multi-bit flip-flops, in Proceedings of IEEE International Midwest Symposium on Circuit and System(MWCAS), 2011, pp.1-4.

DOI: 10.1109/mwscas.2011.6026538

Google Scholar

[6] I.H.R. Jiang, C. L Chang, Y. M/Yang, E.Y.W. Tsai, and L.S.F. Chen, INTEGRA: Fast multibit flip-flop clustering for clock power saving,. IEEE Transactions on CAD of Intergrated Circuits and Systems , Vol. 30 , No. 12, p.1870—1882, December, (2011).

DOI: 10.1109/tcad.2011.2177459

Google Scholar