← 返回 JSSC 论文列表JSSC 2008第9期Other0.18μm CMOS
Match Sensing Using Match-Line Stability in Content-Addressable Memories CAM
提出一种基于匹配线稳定性的内容可寻址存储器匹配检测方案，显著降低能耗。
144x144 三元CAM阵列，功耗降低50%
内容可寻址存储器匹配线检测低功耗设计稳定性分析CMOS实现
▸利用匹配线稳定性区分匹配与未匹配状态
▸采用初始电荷激励匹配线并观察电压变化
▸结合流水线搜索线架构降低功耗
Abstract
This paper presents a match-line (ML) sensing
scheme that distinguishes a match from a miss by first shunting
every ML with a fixed negative resistance, then exciting the MLs
with an initial charge, and subsequently observing their voltage
developments. It is shown that the voltage on the matched ML
will grow to
/86/68/68, as in an unstable system, whereas the voltage
on a missed ML will decay to zero, as in a stable system. Since the
initial excitation charge on the ML’s can be as low as the nois