Electrical Board description

Hello Bernhard:

      In answer to your questions....

       1. No, I don't know of any exsisting SIMM module descriptions.

       2. You description of a path with multipule forks is corrent.
           In general, the fork and endfork statements can be nested
           (as you have shown).

       3. No, I don't know of any currently available tools that
           will accept an .edb file. However, with the passage of
           IBIS 3.0 I would expect that CAE vendors are working on
           it.

                 Regards,
                 Stephen Peters
                 Intel Corp.

=======================================================
on Wed, 29 Oct 1997 19:15:30 Bernhard Unger wrote:

attempting to understand the new IBIS 3.0 feature "Electrical Board =
Description"=20
I have some questions:

1. Is there any example for a .edb file available for instance for a =
SIMM module?

2. Path description in case of a second forc in one branche of the first =
forc?

   Example:

  Pin J25 Node u1
             ______________0__________________0 Pin A1
  0_________| Len=3D1 | Len=3D2
Len=3D0.5 | |__________________0 Pin A2
            | Len=3D2.2
            |_________________________________ 0 Pin A3
                        Len=3D4

 Is the following description correct for this path?

[Path Description] PathJ25Ax
Pin J25
Len =3D 0.5 L =3D 6.0n C=3D2.0p /
Fork
Len =3D 1 L =3D 6.0n C=3D2.0p /
Node u1
Fork
Len =3D 2 L =3D 6.0n C=3D2.0p /
Pin A1
Endfork
Len =3D 2.2 L =3D 6.0n C=3D2.0p /
Pin A2
Endfork
Len =3D 4 L =3D 6.0n C=3D2.0p /
Pin A3

3. Can a path with a series resistance be described as follows?

Pin J25 Rs=3D22Ohms
             ________
  0_________| |________________0 Pin A1
Len=3D0.5 |_______| Len=3D1

[Path Description] PathJ25A1
Pin J25
Len =3D 0.5 L =3D 6.0n C=3D2.0p /
Len =3D 0 R=3D22 /
Len =3D 1 L =3D 6.0n C=3D2.0p /
Pin A1

4. Are there any tools today, which can handle .ebd files?

Thanks

Bernhard Unger
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Received on Thu Oct 30 08:42:49 1997