[SI-LIST] Re: mDDR (200MHz) without Series Termination
- From: steve weir <weirsi@xxxxxxxxxx>
- To: Embedded <hw_si@xxxxxxxxxxxxxx>
- Date: Wed, 10 Nov 2010 07:00:20 -0800
The best thing to do is run a simulation that includes models for the
parts that you are using. If you do not have simulation capability,
then at least look at the rise and fall times in the models to estimate
your situation.
Steve.
Embedded wrote:
> Dear Experts,
> We are using TI AM37x processor with mDDR interface in our design.
>
> The mDDR maximum clock frequency is 200MHz.
>
> In our PCB Layout, we are placing mDDR chip close to AM37x CPU
> and the maximum trace lenghth between mDDR and CPU is less than 2 inch
> (Approximately 1.8 inch) only.
>
> In this case, do we need provide series termination (trace length less than 2
> inch only)?
>
> Will there be any EMI issues if we are not using series termination?
>
> Looking forward your response. Thanks in Adavnce.
>
> Thanks and Regards
> Ranjith
>
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--
Steve Weir
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