Channel density reduction by routing over the cells

Lin, Min-Siang; Perng, Houng-Wern; Hwang, Chi-Yi; Lin, Youn-Long

doi:10.1109/43.85743

IEEE Trans. Comput.-Aided Des. Integr. Circuits Syst.

1991

DOI: 10.1109/43.85743

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Channel density reduction by routing over the cells

Min-Siang Lin¹,

Houng-Wern Perng

Chi-Yi Hwang³

et al.

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1996

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A Greedy Algorithm for Over-The-Cell Channel Routing

Gudmundsson¹,

Ntafos

1996

VLSI Design

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Recent advances in VLSI technology have made the area over cells available for routing. In this paper we present a new over-the-cell channel router that uses greedy heuristics to make the over-the-cell connections and to define the nets needed to complete the connections inside the channel. The router tries to reduce the channel density by moving segments that cross maximum density columns to the over-the-cell areas. The layout model used allows only planar connections over each cell. The final stage is to use an existing channel router to route the connections inside the channel. An important characteristic of the new router is that there is interaction between the decisions made for the over-the-cell connections and the connections needed inside the channel. It performs significantly better than previous over the-cell routers.

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A Greedy Algorithm for Over-The-Cell Channel Routing

Gudmundsson¹,

Ntafos

1996

VLSI Design

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show abstract

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Channel density reduction by routing over the cells

Cited by 1 publication

References 10 publications

A Greedy Algorithm for Over-The-Cell Channel Routing

A Greedy Algorithm for Over-The-Cell Channel Routing

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