Create an Empty SDC File

You can use the Efinity® Code Editor or any text editor to create an SDC file and save it into your project directory.

If you are working with a new project, start by creating an empty SDC file. Then, copy and paste the Interface Designer-generated SDC constraints into this empty file and modify them to meet your timing requirements.

If you are porting an existing design to Efinix FPGAs, you may already have an SDC file. You may still want to start with an empty SDC file, copy the Interface Designer-generated constraints to the new file and modify them as needed, and then add in any additional constraints from your existing SDC file.