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Observer
Observer
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Registered: ‎03-17-2008

Kintex-7 GTX Transmit Phase

Does anyone know if it is possible to skew the clock phases on the four outputs of a GTX quad? E.g., I want to be able to adjust the relative phases of GT0 and GT1 by, say, 100 ps. My searches haven't uncovered any information about this so far.

I see references to the TXPIPPM in UG476, but that appears only to be available in the GTH rather than the GTX.

Thanks,
Aric.

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Teacher
Teacher
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Registered: ‎07-09-2009

Cab I ask why you want to ?
the GTx links normally run asynchronous to each other, and the link format / protocol takes care of the difference in track lengths / phase between different GTx.
<== If this was helpful, please feel free to give Kudos, and close if it answers your question ==>
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Moderator
Moderator
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Registered: ‎07-30-2007

http://www.xilinx.com/support/answers/70869.htm  shows a method.  This same sort of use of the phase interpolator could be done on the GTX.




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