Delay Balancing
R2026bWhen optimizations or block implementation options introduce latency along the critical path in a model, the numerical calculations of the original model and the generated model or HDL code can differ from each other in certain time steps because equivalent delays are not introduced on other, parallel signal paths. With delay balancing, HDL Coder™ detects introduced latency along one path and then inserts matching delays on the other paths in your generated model.
Topics
- Understand Delay Balancing in HDL Coder
Insert matching delays along data paths.
- Use Delay Absorption While Modeling with Latency
Model with latency to absorb design delays and prevent a timing mismatch between the original and generated model.
Troubleshooting
Resolve Delays Not Absorbed During Delay Balancing
Troubleshoot extra latency not absorbed during HDL code generation.
Featured Examples
Investigate and Resolve Non-Absorbable Latency
Recommendations for troubleshooting common delay balancing issues.
Delay Balancing and Validation Model Workflow in HDL Coder
How HDL Coder™ can automatically balance delays within a model. HDL Coder may introduce additional delays in the HDL implementation for a given model. These delays may be introduced by either certain block implementations or by optimizations for the purpose of improving the efficiency of the hardware implementations. However, introducing delays on only certain paths can result functional behavior that is different from the original intent of the user model, thereby violating functional equivalence between the original user model and the HDL implementation.
Control the Scope of Delay Balancing
Balance delays in specific parts of a design, without balancing delays on the entire design.
Optimize Latency and Area for Multirate Designs
Recommendations for optimal code generation of a multirate design.
