A new mismatch-dependent low power technique with shadow match-line voltage-detecting scheme for CAMs

Authors:
Jianwei Zhang;Yizheng Ye;Binda Liu
Affiliations:
Harbin Institute of Technology, Harbin, China;Harbin Institute of Technology, Harbin, China;National Cheng Kung University, Taiwan, China
Venue:
Proceedings of the 2006 international symposium on Low power electronics and design
Year:
2006

Citing 0
Cited 2

A current-recycling technique for shadow-match-line sensing in content-addressable memories

IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Power efficient packet classification using cascaded bloom filter and off-the-shelf ternary CAM for WDM networks

Computer Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

A new mismatch-dependent low-power technique is presented for content-addressable memories (CAMs). With a novel shadow match-line voltage-detecting scheme, the word circuits realize fast self-disable of the charging paths in case of mismatches. Since the majority of CAMs words are mismatched, a significant power is reduced with a high search speed. Simulation results show the proposed 256-word-144-bit ternary CAM, using 0.13-?m 1.2-V CMOS process, achieves 0.51 fJ/bit/search for the word circuit with less than 900 ps search time. The achievement illustrates a 77% energy-delay-product (EDP) reduction as compared to the speed-optimized current-saving scheme.