[SI-LIST] DDR point to point termination
- From: "Aric Hadav" <arich1970@xxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 13 Jul 2004 18:24:10 +0300
Hi,
I'm designing an embedded system with DDR. I'm using a CPU connected to an
on board four 16 bit DDR devices (no DIMM).
I have 2 questions though -
1. can I use only a series termination on the data bus (I saw a few AN that
state that if the disctance between the controller and the DDR IC's is upto
2" its ok). has anyone did it with a 200MHz clock ?
2. since the address and control lines operate in half the data rate and the
DDR controller is very lightly loaded (only 4 chips) can I use only series
termination for address and control ? has anyone did it with good resaults ?
thanks,
Aric
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