[ibis-macro] Re: IBIS in parameter tree format
- From: ckumar <ckumar@xxxxxxxxxxx>
- To: <Arpad_Muranyi@xxxxxxxxxx>
- Date: Mon, 09 Jan 2012 09:09:41 -0800
The tree format will give you great expandability and flexibility; also
as you noted it is easily "machine" processable.
The downside is in the "human" readability side. This can be addressed to
a certain extent by formatting
I think overall the positives outweigh the negative
On Mon, 9 Jan 2012 16:54:19 +0000, "Muranyi, Arpad"
<Arpad_Muranyi@xxxxxxxxxx> wrote:
> Walter,
>
> I changed the subject line so we can keep track of the
> topics easier.
>
> Interesting concept. It seems that this wouldn't be too
> hard to do, and it could be done by preserving all the
> functional rules and descriptions of all the keywords.
> We could even attempt to do this with the reformatting
> of the IBIS specification itself. No technical changes,
> only format and syntax changes.
>
> I am just trying to understand the big picture better with
> the following question. What is the benefit of doing this?
> I know it may be easier to parse it and write a parser for
> it, but is there anything else we would gain by doing this?
>
> Thanks,
>
> Arpad
> ============================================================
>
> -----Original Message-----
> From: Walter Katz [mailto:wkatz@xxxxxxxxxx]
> Sent: Friday, January 06, 2012 2:59 PM
> To: Muranyi, Arpad; 'IBIS-ATM'
> Subject: RE: [ibis-macro] Analog BIRD overview slide
>
> Arpad,
>
> Let me bring this concept one step further. As per Kumar's suggestion,
> this might be a good time to consider changing the IBIS file to a
> parameter tree format.
>
> The following should make this clear as mud:
>
> (Components
> (Component
> (Name <component>)
> (Pins
> (Pin (Number "1") (Signal "DQ0") (Model "DQOUT")
> (Package (PMI_File "pkg.pmi") (Params (pkglen .01) (Zo
> (Corner 50 45 55))))))
> (Pin (Number "2") (Signal "DQ1") (Model "DQOUT")
> (Package (PMI_File "pkg.pmi") (Params (pkglen .01) (Zo
> (Corner 50 45 55))))))
> )
> (Diff_Pin
> (Labels diff_pin inv_pin vdiff tdelay_typ tdelay_min
> tdelay_max)
> ( 1 2 0.1
> NA NA NA)
> )
> )
> )
> (Models
> (Model
> (Name "DQOUT")
> (Model_type "Output")
> (C_comp (Corner 744.002f 744.002f 744.002f))
> (Vmeas .25)
> (Vref 0.0)
> (Rref 50)
> (Algorithmic_Model
> (Executable ("Windows_VisualStudio_32" "dqout.dll"
> "dqout.ami")
> (Executable ("Executable Linux_gcc3.2.3_32 "
> "dqout.so" "dqout.ami")
> )
> (Temperature_Range (Corner 25 100 0))
> (Voltage Range (Corner 1.2 1.2 1.2))
> (Pulldown
> (-2.50000E+00 -5.00000E-02 -5.00000E-02
> -5.00000E-02)
> (-0.00000E+00 0.00000E-02 0.00000E-02
> 0.00000E-02)
> (-2.50000E+00 5.00000E-02 5.00000E-02
> 5.00000E-02)
> )
> (Pullup]
> (-2.50000E+00 5.00000E-02 5.00000E-02
> 5.00000E-02)
> (- 0.00000E+00 0.00000E-02 0.00000E-02
> 0.00000E-02)
> (-2.50000E+00 -5.00000E-02 -5.00000E-02
> -5.00000E-02)
> )
> (Ramp (dV/dt_r (Corner .3/60p .3/60p .3/60p))
> (dV/dt_f (Corner.3/60p .3/60p .3/60p))
> )
> (GND Clamp
> (-2.50000E+00 0 0 0)
> ( 0.00000E+00 0 0 0)
> ( 2.50000E+00 0 0 0)
> )
> (Power Clamp
> (-2.50000E+00 0 0 0)
> ( 0.00000E+00 0 0 0)
> ( 2.50000E+00 0 0 0)
> )
> )
> )
>
> Walter
> ---------------------------------------------------------------------
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