Performance-driven Routing Methodology with Incremental Placement Refinement for Analog Layout Design

Hao Yu Chi, Han Chung Chang, Chih Hsin Yang, Chien Nan Liu, Jing Yang Jou

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Analog layout is often considered as a difficult task because many layout-dependent effects will impact final circuit performance. In the literature, many automation techniques have been proposed for analog placement and routing respectively. However, very few works are able to consider the two steps simultaneously to obtain the best performance and cost after layout. Most of the routing-aware placement techniques optimize the layout results based on an assumed routing result, which may be quite different to the final layout. In this work, we proposed an automatic two-step layout methodology for analog circuits to alleviate the performance loss during layout process. Instead of using a rough routing prediction during placement stage, a crossing-aware global routing technique is first performed to provide an accurate routing resource estimation of the given compact placement. Then, the improved CDL-based layout migration technique is adopted to do a fast adjustment on the placement and routing to reduce the difference between estimation and final layout while keeping the optimality of the given placement. As shown in the experimental results, the proposed methodology is able to improve the accuracy of routing resource estimation thus improving the final layout quality and circuit performance.

原文???core.languages.en_GB???
主出版物標題Proceedings of the 2021 Design, Automation and Test in Europe, DATE 2021
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1218-1223
頁數6
ISBN(電子)9783981926354
DOIs
出版狀態已出版 - 1 2月 2021
事件2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021 - Virtual, Online
持續時間: 1 2月 20215 2月 2021

出版系列

名字Proceedings -Design, Automation and Test in Europe, DATE
2021-February
ISSN(列印)1530-1591

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???event.eventtypes.event.conference???2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021
城市Virtual, Online
期間1/02/215/02/21

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