Platform forum

Question About Length Matching

Mohsen.Sharif , 02-14-2018, 04:06 PM
Hi Robert.
I saw your High-Speed board project (iMX6 and OpenRex).
for routing DDR3 Traces,Length Matching should be done.
why in your project, between net groups address there is a difference
of more than 25 mils?
picture added.
Mohsen.Sharif , 02-15-2018, 02:49 AM

Length Matching in T-Branch must be calculate from CPU to First Chip and again from CPU to Second chip.
different between two length (CPU to First chip and CPU to Second chip), must be +-25mils.

Length Matching in Fly-By must be calculate from CPU to First chip and again First chip to Second chip.

This is the right argument?
robertferanec , 02-18-2018, 08:18 PM
Yes, correct answer
Mohsen.Sharif , 02-19-2018, 01:32 AM
thanks Robert.
Use our interactive Discord forum to reply or ask new questions.
Discord invite
Discord forum link (after invitation)

Didn't find what you were looking for?