Quicklogic Forums

Hi,
We are trying to create LPC controller design to work as LPC slave (on EOS-S3 FPGA) and we are having serious problems with meeting timing requirements. One of the problems is that we cannot use any CLOCK pads as these don't work - there is no input, just as if pad was not connected. Input works only BIDIR pads which don't have CLOCK functionality. For development I'm using latest Qorc SDK release, however I tried also using F4PGA, with the same effect.

Artur

What frequency external clock are you trying to use?

I would suggest bring the clock in on a FBIO pin and then instantiating a global clock buffer. I will look at creating an example if this is still an issue.

Robert wrote: ↑Fri Jan 19, 2024 3:19 pm What frequency external clock are you trying to use?

I would suggest bring the clock in on a FBIO pin and then instantiating a global clock buffer. I will look at creating an example if this is still an issue.

Can you create an example for it? I still don't quite word hurdle understand this issue