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121 Views
Registered: ‎07-23-2019

GTH and In System IBERT

I'm trying to implement a GTH transceiver on Zynq ultrascale+ I created the example design from the wizard but I cannot get proper eye diagrams.

First I noticed the 'init_done_int' and 'link_status_out' signals were never set, soI tweaked the check function to return a match, not my style but...

pic err1

Second thing I noticed is I cannot set or get the additional properties for the link, like status or loopback mode:

pic err2

Last, when I run a scan I get results they don't look like an eye diagram, but like that:

pic err3

 

(for some reason I cannot embed pictures with the text)

err1.png
err2.png
err3.png
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84 Views
Registered: ‎07-23-2019

Re: GTH and In System IBERT

 

I solved 1st and 3rd problems by setting the IBERT in loopback mode. Still cannot get the additional  link properties

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