On Tue, 2008-06-03 at 15:44 -0400, David VanHorn wrote:
> I'm wondering how deep I have to worry about this problem.
> 
> I have a single processor, with two DDR2 dram chips. There is no
> facility for expansion.
> The chips will be located physically within an inch of each other.
> 
> Do I need to really carefully examine PCB trace lengths and timing, or
> can I assume no issues?

Personally, I'd certainly keep trace lengths and impedance issues in
mind.

DDR is a parallel bus. Any time you see the word "parallel bus" length
matching should be something to be concerned about. 

TTYL


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