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Honored Contributor I
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ALTCLKCTRL error

Hi All, 

 

in my current project i used a ALTCLKCTRL block with 2 inputs. 1 from the PLL(125MHz) and the other 1 from an external pin. 

 

the clkselect is a switch from another block. 

The same blocks i used in another design, and it worked perfectly! 

 

in this design, when i connect the output of the block to a virtial pin, i got the error: Error: inclk[1] port of Clock Control Block "node" cannot be used when clkselect port is not used or is a constant. 

 

If i disconnect the Virtial pin, i dont get an error. 

 

I tried to connect to 5 different points, and half of them work. 

 

How can i solve this problem? 

 

Thanks in advance! 

 

regards 

Bram
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