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iMX6 to DDR3: clock length calculation

Question asked by Ilario Gottardello on Nov 29, 2016
Latest reply on Nov 29, 2016 by igorpadykov

Hello,

 

we are designing a board with i.MX6 Quad and DDR3 and we are in doubt about how to calculate clock length.

As you can see in the image below, we have tracks that go from CPU to RAM chips, and than they go on to the termination resistor (highlighted with the arrows).

Example

Are those tracks to be counted in the clock length? Or should we only count the path from CPU pad to RAM pad?

 

Thank you very much

Have a nice day

 

Ilario Gottardello

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