--- Quote Start ---
Oh okay, are you using the Sopc component directly as a top level file? In that case Sopc Builder may have created a clock output, and the pin planner wants you to place it somewhere. As you don't need it, you can simply connect it to an unused I/O (such as one of the pins on the expansion ports) or an SMA output.
If you instantiate the Sopc component inside your top level file, you can simply leave the clock output unconnected.
--- Quote End ---
Yes i using the SOPC builer, the problem is resolved now, i relate it directly as you say to unused i/O pin.
Thank you a lot for your helps Daixiwen :-P.
Honored Contributor
