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Altera_Forum
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14 years ago

DDR Reflection Phenomenon

Hi everybody, These days I have been asking some questions in relationship with some problems in a new pcb design and the communication between the Cyclone III and the DDR. Finally I think I ha...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hello,

I have analyzed the signals again and probably the reflection isn't the cause of the problem. In the images, what is seen are some signals that arrive a little bit late or a bit sooner, and that's because appear 4 pulses when it is expected 3 pulses. Maybe there is another kind of problem.

Thanks.