Excellicon's ConTree enables designer to plan for Clock Tree structures and guide their CTS engine for better results

June 21, 2018 - Laguna Hills, CA

Excellicon Inc. an innovative provider of end-to-end timing closure and constraints products announced release of its latest product “ConTree” for analyzing the clocking logic pre-CTS and for verifying the existing clock tree’s post-CTS.

Through ConTree users will be able to significantly reduce clock skew, build an optimized clock tree, reduce power and shorten the overall timing closure iteration cycles.


In preparation for Clock Tree synthesis often the designer need to gain understanding of the clocking logic. This includes clock distribution analysis, clock relationships, cells to be used in the clock tree, prior clock tree inside the Macro’s and many others.

Today, this is a manual and time consuming work which often leads to inefficient building of clock trees that ultimately impact the timing closure cycles.

Through ConTree, designers can automatically create intelligent clock skew groups, identify the pins that are needed to be excluded from clock balancing, remove redundant logic in the clock path, formally analyze the non-propagating clocks, jitter analysis and many other situations. Finally, users can use ConTree to create the CTS Spec file to be used to drive the clock tree synthesis.

Once the clock tree is synthesized the validation is crucial. ConTree can perform deep analysis of all clock tree cells, derating effects, verification of clock path across the power domains etc. The product also provides a rich capabilities for reporting, debugging and visualization of results.

Himanshu Bhatnagar, CEO of Excellicon said “ConTree does something that no other tool can. It improves the quality of the clock trees by quantifying the quality of the clock tree before and after it is implemented by the CTS tools. The designer gains deep understanding and insight of the clocking using ConTree as opposed to accepting the CTS tools result and being at risk of discovering design issues later.”

ConTree provides another addition to Excellicon products which ensures designers can cover all aspects of timing closure process from early stages of design to final tapeout.

About Excellicon

Excellicon is an innovative provider of end-to-end Timing Closure and Constraints Analysis solutions for the automation of constraints authoring, completion, and validation from RTL to GDS with innovative analysis and debugging infrastructures. Excellicon products ConMan (Constraints Manager), ConCert (Constraints Certifier), ConCert-ET (Exceptions Toolbox), ConCert-BT (Budgeting Toolbox), and ConTree (CTA Analysis & Verification) products to address the needs of designers at every stage of SOC design and implementation in a unified environment. – Timing Closure; Done Once! Done Right!

For further information contact:

Rick Eram


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