A Complete PCB Routing Methodology with Concurrent Hierarchical Routing
A Complete PCB Routing Methodology with Concurrent Hierarchical Routing
复制标题
具有并发分层布线的完整 PCB 布线方法
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Yih
中科院分区：
文献类型：
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作者：
Shih;Hung;Chia;Yolo Chen;Yih
高引脚密度和越来越多的布线层的趋势使印刷电路板(PCB)布线变得复杂，这被归类为逃逸布线和区域布线。传统的逃逸布线研究侧重于逃逸布线，而没有同时考虑芯片元件间的区域布线质量。在这项工作中，我们提出了一种完整的印刷电路板布线方法，包括同时逃逸布线(SER)、SER后求精和无网格区域布线。SER完成所有网络的层分配，并产生一个逃逸顺序，确保在每一层上进行适当的逃逸和区域布线。在布线流的每个阶段都满足长度匹配约束和差分对布线。实验结果表明，该方法可以完成7种商业印刷电路板设计的布线，而商业印刷电路板工具不能完成任何一种商业印刷电路板的布线。
Trends in high pin density and an increasing number of routing layers complicate printed circuit board (PCB) routing, which is categorized as escape and area routing. Traditional escape routing research has focused on escape routing but has not considered the quality of area routing among chip components at the same time. In this work, we propose a complete PCB routing methodology, including simultaneous escape routing (SER), post-SER refinement, and gridless area routing. The SER completes the layer assignment of all nets and produces an escape order ensuring suitable escape and area routing on each layer. Length-matching constraints and differential pair routing are satisfied in each stage of the routing flow. The experiment results indicate that the proposed PCB routing method can complete routings for seven commercial PCB designs, whereas the commercial PCB tool cannot complete any of them.