[SI-LIST] Re: 4 corner test
- From: Jory McKinley <jory_mckinley@xxxxxxxxx>
- To: Roger.Wu@xxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Thu, 3 Jan 2002 11:41:19 -0800 (PST)
Roger,
Corner simulation will bound your SI and timing
problem and create operating margin (hopefully).
Simulation models are based not only on tempature but
also voltage and tempature. You have to also consider
the package and board process.
For SI effects you should use your fastest edge
simulation models (max process/voltage, min temp) with
your max package (max rlc/t-line). This combination
will yield the worst reflections and potential
crosstalk in all my experiences but it never hurts to
run the other combinations as sanity checks.
For system timing you should run corner simulations.
One corner using fastest simulation models with MIN
package (min rlc/t-line). The other corner with the
slowest simulation models (min process/voltage, max
temp) with MAX package. No other combinations are
required for timing.
I hope this helps.
--- Roger.Wu (§dZªL) <Roger.Wu@xxxxxxxxxx> wrote:
> Dear SI folk :
>
> In testing , we commonly use the "4 corners" test
> to verify the
> design .
> And in the simulation , can I use the similar way
> and "min.""max."
> models
> to achieve the "4 corners" test ?
> Thanks a lot .
>
> Roger Wu
>
> 4 corners test:
> Operating Temperature : "min."-"min.",
> "min."-"max.", "max."-"min.",
> "max."-"max."
>
>
>
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=====
Jory McKinley
McKinley Consulting
e-mail: jory_mckinley@xxxxxxxxx
phone: (508)624-7103
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