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DDR3 Routing on IMX6

Question asked by BOMS Weigh on Feb 15, 2016
Latest reply on Feb 15, 2016 by igorpadykov

Hello,

 

One final question about the IMX6 layout.

In the hardware design checklist provided by NXP item 7 under DDR states that T is suggested four 4 or less DDR ICS

We have an IMX53 design using Flyby that worked great for us.  We were hoping to reuse that part of the design.

Is there a problem with the IMX6 that makes T routing preferable to Fly-By?

Thanks,

 

BW

 

7Suggest to use "T" topology when the number of DDR chips are not more than four(two on top, two on bottom).
Otherwise "Fly-by" Topology is recommended for more than two chips on same PCB side. Using the same as last SOM.

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