[SI-LIST] Re: Cref, Vref and Vmeas in IBIS file

Hi Darshan:

An article called "Timing is Everything" on Xilinx.com may help you
here:
http://www.xilinx.com/publications/xcellonline/xcell_49/xc_pdf/xc_mentor
-hyper49.pdf.

Though I can't recall if it's mentioned in the article, simulation tools
typically use Cref, Rref, and Vmeas in "batch" simulation for
flight-time meassurements.

Bill Hargin
Product Manager - HyperLynx
Mentor Graphics Corp.
425-497-5079 - Direct
425-301-4425 - Mobile

> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx=20
> [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Darshan Mehta
> Sent: Friday, September 30, 2005 6:31 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Cref, Vref and Vmeas in IBIS file
>=20
> Hello SI Experts,
>=20
> =20
>=20
> Could you please tell me about how different SI tools=20
> consider the effect of Cref, Rref, Vmeas values for timing=20
> measurement? I want to know how exactly the tool reads these=20
> values or for what kind of calculations the tool reads these=20
> values and how exactly it uses it for timing calculation.=20
>=20
> =20
>=20
> Thanks in advance!
>=20
> Best Regards,
>=20
> Darshan Mehta
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>       =09
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>  Click here to donate to the Hurricane Katrina relief effort.=20
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