I have a project where I am using two clocks at the same frequency, with one having a -90 degree phase shift. The FPGA board I am using is an Nexys A7-100T configured with Vivado in VHDL.
I have used in internal clock on the board with a constraints file which is pin E3 at 100MHz. I have then created a component with the clock wizard on Vivado that takes the input 100MHz clock and should output two 5MHz clocks; Clock1 and Clock2 with Clock2 having the phase shift.
Now when testing my design it did not work so I decided to test the two clock signals by running through clock divider counters bringing them out on an separate LED on the FPGA board.
When I run the design there is no phase shift on the clocks as both LED's blink at the same time, explaining why my design won't work.
My question is has anyone came across a problem like this before? What is the only information I have to enter in the images below to do such a simple clock setup?
I don't have access to Vivado currently to provide images of my clock wizard setup, but I will show a Google image of the wizard and I have entered all the above information correctly.
Thanks for any help, I am unsure what to do.
Here are screenshots of my clock wizard settings:
Here is my screenshot of the oscilloscope measurements below. The clocks show the 90 degree phase shift but I am unsure why they appear 'rounded'. Is this an issue with my measurements on the oscilloscope?