Sanchayan, As Lynne pointed out, the V-t tables of the IBIS files are used to describe the transient characteristics of drivers. Usually the V-t curves are used as a time dependent scaling coefficient, scaling the I-V curves from 0 to 1 or 1 to 0 as time goes by. If you are interested in how this works, you can look at my presentation and a VHDL-AMS implementation of this algorithm at: http://www.eda.org/pub/ibis/summits/jun03b/muranyi1.pdf pages 5, 8, 9, and the VHDL-AMS code is at: http://www.eda.org/pub/ibis/summits/jun03b/IBIS_basic_IO.vhd=20 I hope this helps. Arpad =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] = On Behalf Of Sanchayan Sinha Sent: Tuesday, January 03, 2006 8:32 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: PCI-X 1.0a simulation I have one question regarding this, does an IBIS which is generated from = DC simulations can accurately reflect the dynamic voltage behaviour that = our I/O's undergo. Thanks, Sanchayan ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu