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lixzcc
Visitor
Visitor
373 Views
Registered: ‎10-30-2019

gth clock recovery

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.

2 Replies
lixzcc
Visitor
Visitor
368 Views
Registered: ‎10-30-2019

i use vivado 2017.4 and device is zu9eg
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karnanl
Xilinx Employee
Xilinx Employee
334 Views
Registered: ‎03-30-2016

Hello @lixzcc 

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

RECOVERY_CLK_ALT.png

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