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Title:A CAM with mixed serial-parallel comparison for use in low energy caches
Authors: Aristeidis Efthymiou ; J. D. Garside
Date:Mar 2004
Publication Title:IEEE Transactions on VLSI systems
Publisher:IEEE Computer Society
Publication Type:Journal Article Publication Status:Published
Volume No:12(3) Page Nos:325-329
A novel, low-energy content addressable memory (CAM) structure is presented which achieves an approximately four-fold improvement in energy per access, compared to a standard parallel CAM, when used as tag storage for caches. It exploits the address patterns commonly found in application programs, where testing the four least significant bits of the tag is sufficient to determine over 90% of the tag mismatches; the proposed CAM checks those bits first and evaluates the remainder of the tag only if they match. Although, the energy savings come at the cost of a 25% increase in search time, the proposed CAM organization also supports a parallel operating mode without a speed loss but with reduced energy savings.
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Bibtex format
author = { Aristeidis Efthymiou and J. D. Garside },
title = {A CAM with mixed serial-parallel comparison for use in low energy caches},
journal = {IEEE Transactions on VLSI systems},
publisher = {IEEE Computer Society},
year = 2004,
month = {Mar},
volume = {12(3)},
pages = {325-329},
doi = {10.1109/TVLSI.2004.824298},
url = {},

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