FreeLists / si-list / [SI-LIST] Re: A IBIS question about usage method

["Heinrich.Smith" <heinrich.smith2005@xxxxxxxxx>]

Dear Arpad,

I think I know what you mean, so your suggestion is that we should use
the specific IBIS model case by case, not just tunning higher the
working frequency on lower chip for simulation.

Thank you.

Best regards,
Joseph


On Wed, 2 Mar 2005 08:42:32 -0800, Muranyi, Arpad
<arpad.muranyi@xxxxxxxxx> wrote:
> Joseph,
> 
> It has been a while when I was working with the DDR2 models,
> but as far as I remember, the spec at the higher speed is a
> little more restrictive than at lower speed.  So the faster
> chips should work at lower speeds, but not the other way
> around.
> 
> Did this answer your question?
> 
> Arpad
> ------------------------------------------------------------
> 
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] =
> On Behalf Of Heinrich.Smith
> Sent: Wednesday, March 02, 2005 2:30 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: A IBIS question about usage method
> 
> Dear Arpad Muranyi,
> 
> Thanks for your reply so fast.
> Base on the example of DDR2 533/400Mhz that I mentioned the previous
> mail, do I need to consider the possibility that DDR2 533MHz can cover
> DDR2 400MHz on performing simulation? Even I know almost high
> frequency chips can cover low frequency ones on real DIMM performance.
> 
> Thank you.
> Best Regards,
> Joseph Kao
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