IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Race-Free Mixed Serial-Parallel Comparison for Low Power Content Addressable Memory
Seong-Ook JUNGSei-Seung YOON
Author information
JOURNAL RESTRICTED ACCESS

2008 Volume E91.A Issue 3 Pages 895-898

Details
Abstract

This letter presents a race-free mixed serial-parallel comparison (RFMSPC) scheme which uses both serial and parallel CAMs in a match line. A self-reset search line scheme for the serial CAM is proposed to avoid the timing race problem and additional timing penalties. Various 32 entry CAMs are designed using 90nm 1.2V CMOS process to verify the proposed RFMSPC scheme. It shows that the RFMSPC saves power consumption by 40%, 53% and 63% at the cost of a 4%, 6% and 16% increase in search time according to 1, 2, and 4 serial CAM bits in a match line.

Content from these authors
© 2008 The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top