TCAM for IP-Address Lookup Using Tree-style AND-type Match Lines and Segmented Search Lines

摘要

High speed and low energy remain two challenges for CAM design. In this paper, a tree-style AND-type match line and a segmented search-line schemes that cooperatively top the constituent TCAM, are presented. These TCAMs are fast and energy efficient for applications like IP-address lookup in a network router. The realized 256×128b TCAM macro achieves 26% speed improvement and 39% energy reduction, as compared to state-of-the-art binary CAM (BiCAM) [1].