Abstract

Single Flux Quantum (SFQ) is a promising option for high performance and low power supercomputing platforms. Nevertheless, timing uncertainty represents an obstacle to the design of high-frequency clock distribution networks. The hierarchical chains of homogeneous clover-leaves clocking, (HC)2LC. was proposed as an innovative solution to this challenge. This paper presents a novel algorithm for the physical implementation of (HC)2LC networks. The proposed method models the (HC)2LC network as a directed graph with multiple cycles representing the synchronizing feedback signals. This graph is then transformed to a directed acyclic graph (DAG) by eliminating feedback edges. The physical location of the nodes in the generated DAG (such as splitters and C-junctions) in the Manhattan plane is calculated using a zero-skew clock embedding algorithm. Additionally, a novel mixed integer linear …

Date

2019

Authors

Soheil Nazar Shahsavani, Ramy N Tadros, Peter A Beerel, Massoud Pedram

Conference

2019 IEEE International Superconductive Electronics Conference (ISEC)

Pages

1-3

Publisher

IEEE