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JHari
Beginner
566 Views

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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2 Replies
a_x_h_75
New Contributor III
77 Views

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

Rahul_S_Intel1
Employee
77 Views

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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