[SI-LIST] Re: R: About XTK layout file transfer issue
- From: "Beal, Weston" <weston_beal@xxxxxxxxxx>
- To: <jliou6376@xxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Fri, 15 Jul 2005 09:14:24 -0700
Jliou,
It sounds like the "dog bone" pattern in a BGA where the blind via and
short trace to the pad are all defined together as part of the pin pad.
The ISF syntax does not support complex pads like this so axxx
simplifies it to something that the ISF syntax does support, namely a
circle or rectangle.
Try routing another trace from the pad to connect to the trace at
another point just to test this idea.
After that, you should call Mentor Customer Support. They have some
really good people.
Regards,
Weston
=20
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of jliou
Sent: Friday, July 15, 2005 2:30 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: R: About XTK layout file transfer issue
Carlo,
The problem is not via pad shift with trace, after we double check it.
The problem is part pad don't connect to trace. This problem happen on
blind via design, don't happen on not blind via design. And after we
compare the isf file between Allegro blind via design and Mentor blind
via design, we found the isf file for Allegro have parts pin name on top
and bottom layer, but isf file for Mentor don't have.
Best regards.
jliou
--- In si-list@xxxxxxxxxxxxxxx, "Bleu Carlo Franco"=20
<Carlo_Franco.Bleu@xxxx> wrote:
> Jliou,
> I use XTK with Mentor database, so I do not know how AXXX.exe
(version is =3D
> 2.1.9) works, but I found a lot of problem with the via
description. The =3D
> Mentor to XTK translator does some problem with the drill table, so
XTK =3D
> can not connect different segment in ISF file. I suggest you to
give a =3D
> look at the vias description (ISF is an ASCII file), the forth
field =3D
> describe the drill table.
>=20
> Hope this help
> Carlo
>=20
> -----Messaggio originale-----
> Da: jliou [mailto:jliou6376@xxxx]
> Inviato: venerd=3DEC 15 luglio 2005 8.20
> A: si-list@xxxx
> Oggetto: [SI-LIST] About XTK layout file transfer issue
>=20
>=20
> The problem is when I transfer Allegro layout file *.dat with XTK=3D20 =
> command AXXX.exe(version is 2.1.9), it will create to *.isf file=20
> (version is 2.0). After I launch *.isf file with XTK, I found the
trace=3D20
> shift with pad, so it cause the trace is open one by one
(discontinue).=3D20
> I don't know what kind of problem to cause this error, could
anyone=3D20
> give me some hint to solve this problem?
>=20
>=20
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