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Design of multiple fanout clock distribution network for rapid single flux quantum technology

机译:快速单通量量子技术的多扇出时钟分配网络设计

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Rapid Single Flux Quantum (RSFQ) logic cells have traditionally been limited to driving one fanout cell because of the difficulty in distributing the single flux quantum pulse to multiple fanouts. This paper presents a method to modify the standard RSFQ cells at their input/output interfaces to other cells in order to support a multiple-fanout drive capability. This capability is especially useful for clock distribution in RSFQ logic. This is because RSFQ logic is requires the clock signal to be provided to every logic gate. This is why this paper focuses on the clock signal driving more than one cell without the use of splitters. The potential tradeoff is in lower margins for the cells. However, by careful design of the RSFQ cells, the yield is not compromised by our proposed technique.
机译:传统上,由于难以将单通量量子脉冲分配到多个扇出,因此快速单通量量子(RSFQ)逻辑单元仅限于驱动一个扇出单元。本文提出了一种方法,用于在标准RSFQ单元的输入/输出接口处修改其与其他单元的连接,以支持多扇出驱动能力。此功能对于RSFQ逻辑中的时钟分配特别有用。这是因为RSFQ逻辑要求将时钟信号提供给每个逻辑门。这就是为什么本文着重研究在不使用分离器的情况下驱动多个单元的时钟信号的原因。潜在的权衡是在单元格的较低边距中。但是,通过精心设计RSFQ单元,产量不会受到我们提出的技术的影响。

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