Re: [SI-LIST] : Simulation of differential lines in XTK

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From: selvaraj subramanian (selvaraj.manian@wipro.com)
Date: Fri Aug 25 2000 - 20:23:21 PDT


Guy de Burgh,

Thanks for your info.

Your topology file provides a 100 ohm resistor across the lines near the
receiver and at the driver too right.. Hope I got it right..?

But what I think is that this topology file is meant for XTK6.5 which uses
DIFFPIN statements in the model file and hence you have modeled differential
receivers using two NODE statements.
But the previous versions of XTK don't use this DIFFPIN statement and the
differential receivers are modeled using series statement.

I should have mentioned this in my previous mail, but I forgot .. sorry..

If you know about this, let me know how to change this topology file
accordingly.

thanks & regards,
Selva

----- Original Message -----
From: Guy de Burgh <guy@camarillo.innoveda.com>
To: <si-list@silab.eng.sun.com>; <selvaraj.manian@wipro.com>
Sent: Friday, August 25, 2000 8:48 PM
Subject: Re: [SI-LIST] : Simulation of differential lines in XTK

>
> Selva,
>
> Here is the XNS topology file:
>
> NET lvds_net
> NODE driver P1
> NEXT 4.0
> NODE receiver R1
> SERIES ser 1 TYPE SER_100
> NODE receiver R2
> NEXT 4.0
> NODE driver P2
> SERIES ser 1 TYPE SER_100
> CONNECT_NODE driver P1
> ENDNET
>
> This has a resistor at the driver and at the receiver.
>
> Guy de Burgh
> Innoveda
>
> > From owner-si-list@silab.eng.sun.com Thu Aug 24 20:59 PDT 2000
> > From: "selvaraj subramanian " <selvaraj.manian@wipro.com>
> > To: <si-list@silab.eng.sun.com>
> > Subject: [SI-LIST] : Simulation of differential lines in XTK
> > Date: Fri, 25 Aug 2000 09:19:54 +0530
> > Organization: Wipro
> > MIME-Version: 1.0
> > X-Priority: 3
> > X-MSMail-Priority: Normal
> > X-Mailer: Microsoft Outlook Express 5.00.2014.211
> > X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211
> > Sender: owner-si-list@silab.eng.sun.com
> > Reply-To: "selvaraj subramanian " <selvaraj.manian@wipro.com>
> > Content-Type> : > multipart/alternative> ; >
boundary="----=_NextPart_000_0077_01C00E75.A115D920">
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> > This is a multi-part message in MIME format.
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> > ------=_NextPart_000_0077_01C00E75.A115D920
> > Content-Type: text/plain;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> > Hello,
> >
> > If anybody there knows how to simulate a (LVDS) differential signalling
=
> > in XTK, let me know.
> >
> > I know how to connect differential drivers and differential receivers in
=
> > XTK. But what I want to know is how can I write the topology file if =
> > that 100ohms resistor( a must for the LVDS signals near the receiver) is
=
> > present in the topology.
> >
> > thanks & regards,
> > Selva
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ------=_NextPart_000_0077_01C00E75.A115D920
> > Content-Type: text/html;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> > <HTML><HEAD>
> > <META content=3D"text/html; charset=3Diso-8859-1" =
> > http-equiv=3DContent-Type>
> > <META content=3D"MSHTML 5.00.2014.210" name=3DGENERATOR>
> > <STYLE></STYLE>
> > </HEAD>
> > <BODY bgColor=3D#ffffff>
> > <DIV><FONT size=3D2>Hello,</FONT></DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2>If anybody there knows how to simulate a (LVDS) =
> > differential=20
> > signalling in XTK, let me know.</FONT></DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2>I know how to connect differential drivers and =
> > differential=20
> > receivers in XTK. But what I want to know is how can I write the =
> > topology file=20
> > if that 100ohms resistor( a must for the LVDS signals near the receiver)
=
> > is=20
> > present in the topology.</FONT></DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2>thanks &amp; regards,</FONT></DIV>
> > <DIV><FONT size=3D2>Selva</FONT></DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV>
> > <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
> > <DIV>&nbsp;</DIV></BODY></HTML>
> >
> > ------=_NextPart_000_0077_01C00E75.A115D920--
> >
> >
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