[SI-LIST] Re: usage of [Model Spec] Keyword

B.L,

Here is a quick example of [Model Spec] keyword usage.  The essential
idea=20
behind the keyword is to allow users to express per-corner thresholds
and=20
buffer delay measurement parameters.

[Model]        MyModel
Model_type     Input
|
Vinl =3D 1.65V
Vinh =3D 3.30V
|
|
|                            typ                 min                 max
|
C_comp                      2.50pF              2.00pF
3.00pF
[Model Spec]
Vinl                        1.650V              1.485V
1.815V
Vinh                        3.300V              2.970V
3.630V
[Voltage Range]             5.000V              4.500V
5.500V
[Temperature Range]        25.0               100.0                0.0
|
[GND Clamp]

etc.

In the above example, the input thresholds are set at 1/3 and 2/3 of
Vcc.
Vcc in this example varies by +/- 10% around the target value of 5.0 V.

More information, plus another example, is available in the IBIS 4.0=20
specification, in Section 6.  You can find this at the following URL:

http://www.eda.org/pub/ibis/ver4.0/

I hope this helps!

- Michael Mirmak
  Intel Corporation
  Chair, EIA/IBIS Open Forum

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of lokprakash
Sent: Friday, September 26, 2003 11:30 PM
To: freelists.org
Subject: [SI-LIST] usage of [Model Spec] Keyword


Hi
I want to know the usage of  [Model Spec] keyword.
Could any one send me ibis file which has got this.



Regards,
B.L


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