[SI-LIST] Re: Internal package aggressors/PCB routing
- From: "Ray Anderson" <ray.anderson@xxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Fri, 12 Jan 2007 11:38:35 -0800
Abe-
When I said 4 nearest neighbors I meant nearest neighbors in terms of
coupling (not necessarily in a geometric sense, but it usually is the
same). They could be on both side (2 to the left and 2 to the right) or
they could be all on one side or some other combination. It depends on
the specific geometry of the package.
Our group doesn't supply simulation data (i.e. crosstalk simulations) to
the customer we provide package data. There are other groups within the
company that provide crosstalk study data specifically looking at
crosstalk into MGT nets from other nets within the package. As to the
corner issue, I don't know what their assumptions are right now.
As far as crosstalk amongst the SelectIO pairs, those simulations are
usually done by the customer using package RLC data that we supply.
-Ray
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Abe (Abbas) Riazi
Sent: Friday, January 12, 2007 10:42 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Internal package aggressors/PCB routing
> We typically generate mutual coupling data for the 4 nearest neighbors
since we feel
> that crosstalk coupling from lines more than 4 away from the victim
contribute
> negligible crosstalk. =3D20
Dear Ray,
Does this imply that you simulate/analyze nine nets simultaneously?
Namely, one victim line and 4 nearest neighboring nets on each side?
Do you carry out such analyses only at fast corner (which usually can
yield=3D20
the maximum or worst cases coupling/crosstalk results), or do you
simulate at
the typical and slow corners as well?
Thank you in advance for your response.
Abe Riazi
ServerWorks
=3D20
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=20
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