A 250-MHz 18-Mb Full Ternary CAM With Low-Voltage Matchline Sensing Scheme in 65-nm CMOS

被引：60

作者：

Hayashi, Isamu ^{[1
]}

Amano, Teruhiko ^{[1
]}

Watanabe, Naoya ^{[1
]}

Yano, Yuji ^{[1
]}

Kuroda, Yasuto ^{[1
]}

Shirata, Masaya ^{[1
]}

Dosaka, Katsumi ^{[1
]}

Nii, Koji ^{[1
,2
]}

Noda, Hideyuki ^{[1
]}

Kawai, Hiroyuki ^{[1
]}

机构：

[1] Renesas Elect Corp, Itami, Hyogo 6640005, Japan

[2] Kanazawa Univ, Kanazawa, Ishikawa 9201192, Japan

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2013年 / 48卷 / 11期

关键词：

Differential sense amplifier; low-voltage matchline; reference voltage generator; ternary content-addressable memory (TCAM); voltage down converter; TCAM;

D O I：

10.1109/JSSC.2013.2274888

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：

An 18-Mb full ternary CAM with low-voltage matchline sensing scheme (LVMLSS) is designed and fabricated in 65-nm bulk CMOS process. LVMLSS has three key techniques: voltage down converter, differential sense amplifier with matchline isolation, and reference voltage generation scheme. With these techniques, LVMLSS can reduce the dynamic power consumption of matchlines to 33% compared with conventional one and realizes 42% fast match-line sensing. At 1.0-V typical supply voltage, 250-MHz search frequency is achieved. The power consumption of fully paralleled search operation at 250 MHz is 9.3 W, which is 66% smaller than previous work. This work has realized high-speed, low-power, and robust large-scale TCAM. We believe that this work will greatly contribute to reducing the power of network systems.

引用

页码：2671 / 2680

页数：10

共 15 条

[1] A mismatch-dependent power allocation technique for match-line sensing in content-addressable memories [J].