[SI-LIST] Re: DDR2 ODT options

 Han -

Nothing against you - you seem like a nice enough chap - and I definitely
don't speak for the list, but I am hesitant to provide opinions to folks on
the list that write from a Yahoo email account (etc.) and don't provide
their company info. (There's no accountability.)

best regards,
Jim Peterson

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Bi Han
Sent: Thursday, August 25, 2005 8:35 PM
To: List` Si
Subject: [SI-LIST] DDR2 ODT options

DDR2 ODT has a lot of different termination value options. 

120, 80, 60, 40 , 20 are all possible options. It is reasonable that we have
options 80/60/40 for tuning the PCB impedance, however, I guess these many
options have some other usage than matching various PCB traces. Anyone can
suggest some inputs?

thanks,
Han


                
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