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Explorer
Explorer
291 Views
Registered: ‎09-26-2014

Zynq Ultrascale GEM constran

Hello. In shematic review check list, for GEM clock, requirements are described - " Delay by 1.5 - 2 ns with respect to average delay of data"

But i can not add this delay - this delay requaired length of trace 214 mm. 

Someone will tell me if I understand thшы requirements?

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Scholar
Scholar
269 Views
Registered: ‎04-13-2015

Re: Zynq Ultrascale GEM constran

@jack1977 

you could always rely on the PHY to perform this delay.  All PHYs have some form of SW programmable delay control on the signals between the PHY & MAC. Some have minimal sets of pin that are adjustable when others have full sets.

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