Dual Pai Sigma Segment Matchline for low power Ternary CAM

Abstract

This paper proposes a Dual Pai - Sigma Segment Matchline scheme to reduce the search (compare) power of a Ternar y Content Addressable Memory (TCAM). The proposed Matchline does not incur the issues of short circuit current and charge sharing, which typically exist in the hybrid NAND - NOR Matchline. The proposed scheme is designed using 6T NAND NOR TCAM cells and 4T N AND & NOR TCAM cells and their performance is compared. Results shows that the search power of the TCAM can achieve 60% power reduction compared with the conventional Single Pai - Sigma Matchline. And the delay is calculated as ns. And also the power delay product of the proposed scheme very less compared to conventional method.