在感测放大器中采用匹配线分割和反馈的高速低功耗三元凸轮设计

Syed Iftekhar Ali, Md. Shafiqul Islam
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引用次数: 7

摘要

三元内容可寻址存储器(TCAM)在高速查找密集型应用中越来越受欢迎。tcam的大动态功耗使得功耗降低技术成为一个活跃的研究领域。在本文中,我们提出了一种新的匹配线传感方案,该方案采用了匹配线分割和第一段传感放大器的正反馈。采用130nm 1.2V CMOS逻辑进行的仿真表明,与传统的电流竞赛传感方案相比,速度提高了26%,能量降低了47%以上,而面积开销却微不足道。此外,TCAM操作所需的控制信号数量保持在最低限度。
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A high-speed and low-power ternary CAM design using match-line segmentation and feedback in sense amplifiers
Ternary content-addressable memory (TCAM) has become popular in high-speed lookup intensive applications. Large dynamic power consumption of TCAMs makes power reduction techniques an active area of research. In this paper we present a new match-line (ML) sensing scheme employing ML segmentation and positive feedback in the sense amplifier of the first segment. Simulation using 130nm 1.2V CMOS logic shows 26% speed enhancement and more than 47% energy reduction compared to conventional current-race sensing scheme at the cost of insignificant area overhead. Additionally, number of control signals required for TCAM operation has been kept minimum.
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