Hi,

  With the risk of being flamed I will pose a rather simple question here 
(although I certainly don't know the answer). I am kind of new to board 
level design, and I have tried for days to figure out how to terminate 
tranmission lines with I/O devices connected to them.  Assuming CMOS I/Os, 
and rise times of 1 ns, any interconnects longer than about an inch could 
have serious problems with ringing.  I am fairly clear on how to terminate 
lines with a driver and a receiver.  However, I can't figure out how to 
terminate when you have two I/O pins separated by a transmission line.  
Would you do parallel termination on both ends?
  
  Any thoughts?
  
  Thanks,
  

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