05-23-2019 11:49 PM
I am trying to instantiate the 100G Eth subsystem to use in zcu111.
However, I have some problems, it seems that the gt_txusrclk2 is not running.
I am using the gt_refclk in pins v32 &V31.
Any ideas what could cause the gt_usrclk2 to be not running ?
Do I have to enable it somehow from the EthCore or ?
05-24-2019 08:58 AM
Check the IO report and make sure all the pins are correct. Check your power supply levels. If possible scope the refclk at the input pins.
05-27-2019 01:25 AM
In the IO report the pins are in correct position.
The powers should be OK.
So, far I am not able to measure the clock, meaning not able to find a correct position to measure
05-28-2019 05:53 AM
I think it was up to setting the correct freq from ext-pll and then resetting the core.
One thing still:
what is the meaning of the
"gt_loopback_in(11:0)" and what should be connected there ?