3642 - Diamond: Why does the following warning message appear in Spreadsheet View of the software when a single-ended clock pin in the design is assigned to a Primary Clock port?

3642 - Diamond: Why does the following warning message appear in Spreadsheet View of the software when a single-ended clock pin in the design is assigned to a Primary Clock port?

Description:

WARNING - Warning -The clock port [RCLK] is assigned to a non clock dedicated pin [D14], which might affect the clock performance.

Solution:

In the Spreadsheet View of Lattice Diamond Software, if the clock pin is assigned to a complementary pin of a Primary clock, this warning appears as the general routing has been used to drive the Primary net.

To overcome this warning, assign the single-ended clock input to the True pin of the Primary clock.