gth clock recovery

[lixzcc]

hi, i want to recover a clock from gth, and output it to board for use.

but i found the recovered clock from gth can only be routed to obufds_gth.

i need to output it from another user io. how can i reallize it. thanks.

[lixzcc]

i use vivado 2017.4 and device is zu9eg

[karnanl]

Hello @lixzcc 

You can try the following connectivity as a workaround/alternative.



You can set MMCM to generate clock to fit your External device required clock frequency.
But please note that we do not guarantee that to output clock to external device will have the same jitter performance to GTH recovery clock.

Thanks & regards
Leo