A high-speed and low-power ternary CAM design using match-line segmentation and feedback in sense amplifiers

Author

Ali, Syed Iftekhar ; Islam, M.S.

Author_Institution

Dept. of Electr. & Electron. Eng., Islamic Univ. of Technol., Gazipur, Bangladesh

fYear

2010

fDate

23-25 Dec. 2010

Firstpage

221

Lastpage

226

Abstract

Ternary content-addressable memory (TCAM) has become popular in high-speed lookup intensive applications. Large dynamic power consumption of TCAMs makes power reduction techniques an active area of research. In this paper we present a new match-line (ML) sensing scheme employing ML segmentation and positive feedback in the sense amplifier of the first segment. Simulation using 130nm 1.2V CMOS logic shows 26% speed enhancement and more than 47% energy reduction compared to conventional current-race sensing scheme at the cost of insignificant area overhead. Additionally, number of control signals required for TCAM operation has been kept minimum.

Keywords

CMOS analogue integrated circuits; CMOS logic circuits; content-addressable storage; feedback amplifiers; logic design; low-power electronics; ternary logic; CMOS logic; content addressable memory; dynamic power consumption; high speed low power ternary CAM design; lookup intensive application; match line segmentation; positive feedback; power reduction technique; sense amplifier; Capacitance; Energy consumption; Logic gates; Sensors; Threshold voltage; Tin; Transistors; content-addressable memory; energy consumption; feedback; sense amplifier; sensing scheme; ternary;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Information Technology (ICCIT), 2010 13th International Conference on

Conference_Location

Dhaka

Print_ISBN

978-1-4244-8496-6

Type

conf

DOI

10.1109/ICCITECHN.2010.5723858

Filename

5723858