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Methodology for Structured Data-Path Implementation in VLSI Physical Design: A Case Study
Indian Inst Technol Bhubhaneswar IITBBS, Sch Elect Sci, Bhuabaneswar 752050, Odisha, India..
ST Microelect Asia Pte Ltd, Singapore 554574, Singapore..
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Electronics and Embedded systems.ORCID iD: 0000-0002-5697-4272
Indian Inst Technol Bhubhaneswar IITBBS, Sch Elect Sci, Bhuabaneswar 752050, Odisha, India..ORCID iD: 0000-0001-9028-2563
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2022 (English)In: Electronics, E-ISSN 2079-9292, Vol. 11, no 18, article id 2965Article in journal (Refereed) Published
Abstract [en]

State-of-the-art modern microprocessor and domain-specific accelerator designs are dominated by data-paths composed of regular structures, also known as bit-slices. Random logic placement and routing techniques may not result in an optimal layout for these data-path-dominated designs. As a result, implementation tools such as Cadence's Innovus include a Structured Data-Path (SDP) feature that allows data-path placement to be completely customized by constraining the placement engine. A relative placement file is used to provide these constraints to the tool. However, the tool neither extracts nor automatically places the regular data-path structures. In other words, the relative placement file is not automatically generated. In this paper, we propose a semi-automated method for extracting bit-slices from the Innovus SDP flow. It has been demonstrated that the proposed method results in 17% less density or use for a pixel buffer design. At the same time, the other performance metrics are unchanged when compared to the traditional place and route flow.

Place, publisher, year, edition, pages
MDPI AG , 2022. Vol. 11, no 18, article id 2965
Keywords [en]
data-path, placement, routing, innovus, electronic design automation, physical design
National Category
Energy Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering Embedded Systems
Identifiers
URN: urn:nbn:se:kth:diva-319845DOI: 10.3390/electronics11182965ISI: 000857623900001Scopus ID: 2-s2.0-85138688425OAI: oai:DiVA.org:kth-319845DiVA, id: diva2:1702602
Note

QC 20221011

Available from: 2022-10-11 Created: 2022-10-11 Last updated: 2022-10-11Bibliographically approved

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Stathis, DimitriosHemani, Ahmed

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