Hi,
If you use IO pin as Clock, for example, let's say PLL you will get an error,
You can use PLL with input 10MHz and generate the required clock.
Go through the link below which may help you,
https://www.altera.com/support/support-resources/knowledge-base/solutions/rd03182011_985.html Follow the steps below to make the assignment:in the Assignment Editor:1) Create a new assignment in the Assignment Editor and then set:Assignment Name = Global Signal
Value = Global Clock
Enabled =Yes
To = <node name> (For example, use the node finder to locate the node name of the PLL output clock such as "pll1:inst|altpll:altpll_component|pll1_altpll:auto_generated|wire_pll1_clk[0]")
2) After the assignment is created, the assignment list will be updated.
3) Recompile the design.
4) After compilation, verify your assignment by viewing the "Global and other fast signals" report under Fitter > Resource Section > Global & Other fast signals. You will see thatthe output clock is now connected to a Global Clock.
When entering an assignment in the .qsf file follow these steps:
1) Open the .qsf file and add the following:set_instance_assignment -name GLOBAL_SIGNAL "GLOBAL CLOCK" -to "<node name>"
2) Recompile the design.
3) After compilation, verify your assignment by viewing the "Global and other fast signals" report under Fitter > Resource Section > Global & Other fast signals. You will see thatthe output clock is now connected to a Global Clock.
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Let me know if this has helped resolve the issue you are facing or if you need any further assistance.
Best Regards,
Anand Raj Shankar
(This message was posted on behalf of Intel Corporation)
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