Simulating CDC Reconvergence: Validating Robustness with Questa One Sim's Metastability Injection
This webinar will delve into Questa One Sim’s groundbreaking metastability injection capability, a pivotal advancement that brings the critical aspect of non-deterministic delay validation directly into the simulation realm. We will demonstrate how this new feature enables designers to actively model and inject varying metastability delays into synchronizer paths, allowing for rigorous verification of sequential reconvergence logic.
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Session Registration
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Session Overview
The proliferation of multi-clock designs in modern SoCs introduces significant challenges in ensuring reliable data synchronization across asynchronous clock domains. Unverified Clock Domain Crossing (CDC) paths are a leading cause of functional bugs and costly silicon re-spins, demanding robust and efficient verification solutions.
To prevent unstable, or 'metastable,' signals from disrupting designs when data moves between asynchronous clock domains, designers employ special circuits called synchronizers. While effective at eliminating metastability, these synchronizers introduce non-deterministic delays – meaning the exact delay can vary.
The critical challenge is that standard RTL simulation, being deterministic, cannot model these unpredictable delays. This limitation becomes particularly acute in designs with sequential reconvergence, where data from multiple sources crosses into another clock domain via multiple synchronizers before being recombined by logic. Designers need to rigorously verify that this recombination logic functions correctly, even under varying, non-deterministic synchronizer delays, ensuring the design's resilience to metastability's effects.
This webinar will delve into Questa One Sim’s groundbreaking metastability injection capability, a pivotal advancement that brings the critical aspect of non-deterministic delay validation directly into the simulation realm. We will demonstrate how this new feature enables designers to actively model and inject varying metastability delays into synchronizer paths, allowing for rigorous verification of sequential reconvergence logic.
Join us to gain unparalleled confidence in your design’s resilience to metastability effects, ensuring robust functional correctness and accelerating verification closure for complex multi-clock SoCs.
What You Will Learn
- How Questa One Sim now introduces metastability injection in RTL simulation
Who Should Attend
- Design engineers facing issues with CDC reconvergence issues
Products Covered
- Questa CDC and Questa One Sim
