摘要
异步电路相对同步电路而言具有无时钟偏斜、模块化程度高、功耗低、电磁兼容性强等优势,越来越受到人们的广泛关注.异步电路设计方法是异步电路研究中的一个重点,文中将异步电路设计方法的发展历程划分为3个阶段,并着重对第3个阶段的设计方法进行了综述.根据设计方法的描述方式和设计粒度,首先将第3阶段进一步划分为语法驱动转换的设计方法、同步-异步转换的设计方法和基于定制的细粒度高性能异步流水线设计方法3类;然后从设计方法的理论基础、电路模型、设计自动化程度、电路性能等多个角度进行介绍并比较.最后对异步电路设计方法未来的发展趋势进行了展望.
Asynchronous circuits have drawn increasing attentions from not only researchers in universities but also designers in corporations for their advantages in terms of no clock skew, high modularity, low power and better EMI. Design methods are critical in the researches of asynchronous circuits. In this paper, we divide the history of asynchronous circuit design into 3 stages, and in particular we give a review of the last stage. We classify the methods in the last stage into 3 classes by the specification style and the granularity of circuits: the syntax-driven method, the synchronous-toasynchronous circuits conversion method and the full-custom based design method of fine-grain asynchronous pipelines. Design methods are then surveyed and compared from several aspects. Those aspects include theory foundation, design style, design automation, and the efficiency of designed circuits. Finally, developing trends of asynchronous circuit design methods are given.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2011年第3期543-552,共10页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(60873015
61070037)
关键词
异步电路
设计方法
语法驱动转换
同步-异步转换
细粒度异步流水线
asynchronous circuit
design method
syntax-driven
synchronous-to-asynchronous circuits conversion
fine-grain asynchronous pipeline