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An Energy Efficient Design of High-Speed Ternary CAM Using Match-Line Segmentation and Resistive Feedback in Sense Amplifier

机译:高速三元凸轮在读出放大器中使用匹配线分割和电阻反馈的节能设计

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—This paper presents a high-speed and low-energy match line (ML) sensing scheme for ternary content addressable memory (TCAM). The proposed sensing scheme employs selective precharge which performs partial comparison on the TCAM words to eliminate most of the mismatched words from further comparison. Use of positive feedback in the sense amplifiers engaged in this phase speeds up search operation and reduces energy consumption. In the next phase, remaining portions of those words which were matched in the first phase are scanned to find the fully matched words. Lower resistance in the charging path of the sense amplifier in the second phase causes fast match detection. The proposed technique is simulated using 130nm 1.2V CMOS logic. Compared to conventional current-race (CR) sensing scheme the proposed scheme shows 26.5% speed enhancement and at least 31% energy reduction at the cost of insignificant area overhead and small voltage margin degradation. Unlike many CR type schemes, no analog control voltage has been used in the proposed scheme.
机译:- 这篇论文提供了一种高速和低能量匹配线(ML)传感方案,用于三元内容可寻址存储器(TCAM)。所提出的感测方案采用选择性预充电,其对TCAM单词进行部分比较,以从进一步的比较中消除大多数错配的单词。在从事此阶段的读出放大器中使用正反馈加速搜索操作并降低能耗。在下一阶段中,扫描在第一阶段匹配的那些词的剩余部分以查找完全匹配的单词。在第二阶段中的读出放大器的充电路径中的降低电阻导致快速匹配检测。使用130nm 1.2V CMOS逻辑模拟所提出的技术。与传统的电流 - 播种(CR)感测方案相比,所提出的方案显示出26.5%的速度增强和至少31%的能量降低,以微不足道的面积开销和小的电压边缘降解。与许多CR型方案不同,在所提出的方案中没有使用模拟控制电压。

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