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iMX283 EMI_DDR_OPEN routed Length

Question asked by Nick Ipri on Jun 22, 2015
Latest reply on Jun 23, 2015 by Nick Ipri

I just want to clarify what the final routed length of this trace needs to be. AN4215 specifies that the total routed length needs to be

CLK routed distance + DQS routed distance.

 

I have 2 byte lanes in my DDR2 interface so I have DQS0 and DQS1.

 

I want to confirm what the correct interpretation is. Is it...

 

total routed length = CLK + DQS0 + DQS1

 

or

 

total routed length = CLK + (DQS0 or DQS1)

 

I believe that the latter is correct....

 

Thanks in advance.

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