Achieving routing integrity in analog layout migration via cartesian detection lines

Hao Yu Chi, Zi Jun Lin, Chia Hao Hung, Chien Nan Jimmy Liu, Hung Ming Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In order to improve design productivity, proper layout automation tools are desired for analog circuits. Layout migration is one possible approach to generate a new layout for given circuits with different device sizes or different technology, and still keep the original layout topology. However, routing behaviors are often not mentioned in previous works, which requires a complete rerouting that may not follow the original style. Pan [16] first proposed a Constrained Delaunay Triangulation (CDT) based model to keep the routing behavior during layout migration. However, because the device sizes and related distance may be different in the new layout, some reference lines in CDT models may be removed, resulting in some missing nets after migration. In this paper, a novel Cartesian Detection Line (CDL) based model is proposed to preserve the routing behavior in original layouts. Because alternative lines in the modified placement can be easily found to prevent from missing nets, the proposed CDL model greatly improves the routing completeness during layout migration. Several routing refinement techniques are also proposed to solve the routing issues due to block displacement. In our experiments, the routing completeness can be improved to almost 100% with the proposed CDL model, which greatly reduces the design efforts.

Original languageEnglish
Title of host publication2019 IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2019 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728123509
DOIs
StatePublished - Nov 2019
Event38th IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2019 - Westin Westminster, United States
Duration: 4 Nov 20197 Nov 2019

Publication series

NameIEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD
Volume2019-November
ISSN (Print)1092-3152

Conference

Conference38th IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2019
CountryUnited States
CityWestin Westminster
Period4/11/197/11/19

Fingerprint Dive into the research topics of 'Achieving routing integrity in analog layout migration via cartesian detection lines'. Together they form a unique fingerprint.

Cite this