Check for obsolete Unit Delay Enabled/Resettable Blocks - MATLAB & Simulink (original) (raw)
Check ID:com.mathworks.HDL.ModelChecker.runObsoleteDelaysChecks
Check ID:com.mathworks.HDL.ModelAdvisor.runObsoleteDelaysChecks
Check if the DUT contains obsolete Unit Delay Enabled/Resettable blocks
Available with Simulink® and HDL Coder™.
Description
This check displays a warning if the DUT Subsystem contains any of these blocks:
- Unit Delay Enabled
- Unit Delay Resettable
- Unit Delay Enabled Resettable
These blocks have been obsoleted. The code generator does not recommend usage of these blocks in your Simulink model.
Results and Recommended Actions
To fix this warning, click Modify Settings and the code generator replaces these blocks with the corresponding synchronous counterparts:
- Unit Delay Enabled is replaced by Unit Delay Enabled Synchronous.
- Unit Delay Resettable is replaced by Unit Delay Resettable Synchronous.
- Unit Delay Enabled Resettable is replaced by Unit Delay Enabled Resettable Synchronous.
These blocks are recommended because they use the State Control block for synchronous simulation behavior and generate hardware-friendly HDL code. For more information, see Synchronous Subsystem Behavior with the State Control Block.