[Open-graphics] Re: de-jittering

John Griessen john at foseda.com
Thu Nov 29 23:42:37 EST 2007


Dieter wrote:

> Are you saying that there is ground bounce and crosstalk *inside*
> the FPGA?  Kinda hard to beef up the ground inside someone else's
> chip.  :-(


But there are routing options.  Here's from the spartan3 spec:

Digital Clock Manager (up to four DCMs) - Clock skew elimination - Frequency synthesis - High resolution phase shifting Eight 
global clock lines and abundant routing


Redoing the routing with other global clock lines in different locations could help.
900ps -->  100ps sounds too far.

John G


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