Quartus® Prime Pro Edition User Guide: Design Compilation

ID 683236
Date 4/01/2024

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1.7.3. Using Synopsys* Design Constraint (SDC) on RTL Files

SDC-on-RTL supports SDC files written using SDC 2.1-compliant SDC commands and can support general Tcl code that the Tcl console can parse. These SDC files target your design netlist, allowing you to target hierarchical ports.

  • Only the Timing Analyzer Tcl console supports the sdc_ext Tcl package.
  • Quartus® Prime software GUI-based constraint authoring is currently disabled for files with RTL_SDC_FILE assignments. This means the timing constraint entry dialogs are not available. You must enter timing constraints only by typing them in.
  • Issues, such as incorrect options or other syntax errors, found in the SDC-on-RTL SDC files are posted as warnings in the Quartus® Prime software GUI and message console.

For more information about how to manage SDC-on-RTL SDC files, refer to the following topics: