VLSI Design of Low Power High Speed Parallel Self Timed Adder for ALU Processing Circuits

P. Lokesh*, U. Somalatha**, S. Chandana***
*-*** Assistant Professor, Vemu Institute of Technology, P. Kothakota, India.
Periodicity:September - November'2017
DOI : https://doi.org/10.26634/jcir.5.4.13942

Abstract

Binary Addition is one of the most important arithmetic operation that a processor can execute. Such ALU process requires to be operated with high speed without degrading the performance of the circuit. Since VLSI mainly focus in area, delay and power consumption, a good VLSI circuit can maintain tradeoff between these parameters. In this paper, parallel Self Timed Adder is presented, which is capable of performing multipath binary addition. This parallel operation do not generate carry chain propagations thereby speedup the circuitry. One advantage of parallel adder is it maintains the tradeoff between Fan-in and Fan-out by incorporating suitable transistors in parallel. The design is implemented in Xilinx ISE14.2 synthesis tool with Virtex-5 FPGA as the target hardware equipment. For backend analysis, the XOR gate and multiplexers are designed by using extended Dual Mode Logic Technique and layouts are designed in Microwind3.1 at 32 nm CMOS Technology The simulation and synthesis results reveals the fact the parallel self timed adder have the potential to run faster when compared with existing asynchronous adder.

Keywords

ALU, Asynchronous Circuits, CMOS Design, Virtex5 FPGA, DML

How to Cite this Article?

Lokesh, P., Somalatha, U., and Chandana, S. (2017). VLSI Design of Low Power High Speed Parallel Self Timed Adder for ALU Processing Circuits. i-manager’s Journal on Circuits and Systems, 5(4), 27-32. https://doi.org/10.26634/jcir.5.4.13942

References

[1]. Choudhury, P. P., Sahoo, S., & Chakraborty, M. (2008, December). Implementation of basic arithmetic operations using cellular automaton. In Information Technology, 2008. ICIT'08. International Conference on (pp. 79-80). IEEE.
[2]. Geer, D. (2005). Is it time for clockless chips? [Asynchronous processor chips]. Computer, 38(3), 18-21.
[3]. Liu, W., Gray, C. T., Fan, D., Farlow, W. J., Hughes, T. A., & Cavin, R. K. (1994). A 250-MHz wave pipelined adder in 2- /spl mu/m CMOS. IEEE Journal of Solid-State Circuits, 29(9), 1117-1128.
[4]. Rahman, M. Z., & Kleeman, L. (2013). A delay matched approach for the design of asynchronous sequential circuits. Tech. Rep, 5042013. Dept. Comput. Syst. Technol., Univ. Malaya, Kuala Lumpur, Malaysia.
[5]. Riedel, M. D. (2004). Cyclic Combinational Circuits (Doctoral Dissertation, California Institute of Technology).
[6]. Sparsø, J., & Furber, S. (2001). Principles of Asynchronous Circuit Design. Boston, MA, USA: Kluwer Academic.
[7]. Tewksbury, T. L., & Lee, H. S. (1994). Characterization, modeling, and minimization of transient threshold voltage shifts in MOSFETs. IEEE Journal of Solid-state Circuits, 29(3), 239-252.
[8]. Tinder, R. F. (2009). Asynchronous Sequential Machine design and analysis: A comprehensive development of the design and analysis of Clock-Independent State Machines and Systems. Synthesis Lectures on Digital Circuits and Systems, 4(1), 1-236.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
USD EUR INR USD-ROW
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.