论文标题

超深的逻辑验证超过流程超越流程技术

Logic Verification of Ultra-Deep Pipelined Beyond-CMOS Technologies

论文作者

Fayyazi, Arash, Nazarian, Shahin, Pedram, Massoud

论文摘要

传统的逻辑等效检查(LEC)在整个芯片设计过程中起着重要作用,面临着满足许多基于与标准互补金属氧化物半导体(CMOS)不同的逻辑模型所需的要求的挑战。在本文中,我们提出了一个LEC框架,该框架用于超越流行电路的验证过程。我们的LEC框架与现有的CMOS技术兼容,但也能够检查超出CMOS技术独有的功能和功能。例如,某些新兴技术的性能受益于超深的管道和此类电路的验证,需要新的模型和算法。因此,我们介绍了多周期输入依赖关系(MCID)电路模型,该模型是设计的新型模型表示,以明确捕获电路对内部信号和输入序列的主要输出的依赖性。嵌入所提出的电路模型和几个结构检查模块,验证过程可以独立于基础技术和信号传导。我们基准基准在合成后快速单频量子(RSFQ)网络清单上提出的框架。结果显示了RSFQ电路基准的比较验证时间,包括32位Kogge-Stone加法器,16位整数分隔线和ISCAS'85电路相对于ABC工具,用于类似的CMOS电路。

Traditional logical equivalence checking (LEC) which plays a major role in entire chip design process faces challenges of meeting the requirements demanded by the many emerging technologies that are based on logic models different from standard complementary metal oxide semiconductor (CMOS). In this paper, we propose a LEC framework to be employed in the verification process of beyond-CMOS circuits. Our LEC framework is compatible with existing CMOS technologies, but, also able to check features and capabilities that are unique to beyond-CMOS technologies. For instance, the performance of some emerging technologies benefits from ultra-deep pipelining and verification of such circuits requires new models and algorithms. We, therefore, present the Multi-Cycle Input Dependency (MCID) circuit model which is a novel model representation of design to explicitly capture the dependency of primary outputs of the circuit on sequences of internal signals and inputs. Embedding the proposed circuit model and several structural checking modules, the process of verification can be independent of the underlying technology and signaling. We benchmark the proposed framework on post-synthesis rapid single-flux-quantum (RSFQ) netlists. Results show a comparative verification time of RSFQ circuit benchmark including 32-bit Kogge-Stone adder, 16-bit integer divider, and ISCAS'85 circuits with respect to ABC tool for similar CMOS circuits.

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