The Vivado IDE provides several ways to enter constraints. Unless you directly edit the XDC file in a text editor, you must open a design database (elaborated, synthesized or implemented) in order to access the constraints windows in the Vivado IDE.
The Vivado IDE provides several ways to enter constraints. Unless you directly edit the XDC file in a text editor, you must open a design database (elaborated, synthesized or implemented) in order to access the constraints windows in the Vivado IDE.