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Beginner
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Can DIFFCLK pins be used as Input Signals for Cyclone IV E device?

We are using Cyclone IV Device with part no. EP4CE15F23C8N. We want to use the DIFFCLK_xn/p pins as input pin (to read interrupts) and use this information to implement a logic.  

 

Can DIFFCLK pins be used as Input Signals for Cyclone IV E device?

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New Contributor III

Re: Can DIFFCLK pins be used as Input Signals for Cyclone IV E device?

Yes they can. By default these are the standard dedicated clock input pins and yes, they can be routed to allow them to be read.

 

FYI - it's pretty quick to create a project, assign one of your input signals to one of these dedicated clock inputs and have Quartus tell you the answer...

 

Cheers,

Alex

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Employee

Re: Can DIFFCLK pins be used as Input Signals for Cyclone IV E device?

Hi Prakash, You can use the DIFFCLK_xn/p, only concern to check is that the pin is an GPIO pin. If it is GPIO pin you can connect. And for making sure, make a sample project and assign the IO pins. If there is any issue Quartus will throw error
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