Dedicated Clock (CLK) pins

[CLa_R]

In my Altera Cyclone IV EP4CE10 Pin Information document, I see pins CLK1...7.

Can I use this pins as normal IO (mono or bidirezional) pins?

[AnandRaj_S_Intel]

Hi,

Yes _CLKOUTp or _CLKOUTn pins can be used as IO(mono or bidirectional) or clock.

https://www.thailand.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone-iv/pcg-01008.pdf

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)

[CLa_R]

Thanks for your ansewer.

If I read well, in the document you showed me, the pins labeled DIFFCLK [1..7], as in my case, can be used ONLY as input pins

[AnandRaj_S_Intel]

Hi,

Yes, ​DIFFCLK  or CLK are dedicated clock pin can be used only as Input pin.

We can also cross check using quartus tool too, we expect fitter error for such a scenario.

Best Regards,

Anand Raj Shankar