High-throughput CAM based on a synchronous overlapped search scheme

被引：4

作者：

Onizawa, Naoya ^{[1
]}

Matsunaga, Shoun ^{[2
]}

Gaudet, Vincent C. ^{[3
]}

Gross, Warren J. ^{[1
]}

Hanyu, Takahiro ^{[2
]}

机构：

[1] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ H3A 0E9, Canada

[2] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi 9808577, Japan

[3] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada

来源：

IEICE ELECTRONICS EXPRESS | 2013年 / 10卷 / 07期

关键词：

associative memory; cache; process variations; CONTENT-ADDRESSABLE MEMORIES; POWER;

D O I：

10.1587/elex.10.20130148

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A high-speed data-search mechanism, called a synchronous overlapped search mechanism (SOSM) that enables a next-word search after searching just a few bits of the current word by simple pre-computation in most cases, is introduced for a content-addressable memory (CAM). Since there are no delay elements in the proposed hardware based on the SOSM, the hardware is robust against timing variation, maintaining high-throughput computing under serious process variation. A 128x64-bit CAM is designed with considering 30% variations of threshold voltages under a 45nm CMOS technology and operates at 4.2x faster throughput than that of a conventional CAM with 12.3% energy overhead.

引用

页数：9

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