hierchical LVS

[Moises Paniagua]

Hi!

Last week I asked if someone could help me to do a LVS in order to
check just the present layers, but not the previous ones. The answer was
that
I had to activate "macro-cell" in the extract options. I have done that,
however it does not work.

My situation is that I have to check the connections between a layout in
full-custom and a layout synthesized in Silicon Ensemble. For that purpose I
have created a symbol from the layout (layout from SE) and a symbol from
schematics (full-custom).

The error that appears on the screen is the following one:

"Cannot find switch master cell I1 in cell view (middle_molecule schematic)
from viewlist: "auLvs schematic ""

I1 refers to the layout synthesized in Silicon Ensemble.

Many thanks.

Moisés Paniagua
Technical University of Catalonia

 

[S. Badel]

Hi Moisés,

From what you say, your problem is related to netlisting.
When netlisting, the netlister searches for views in the
"switch view list" ("auLvs schematic" in your case) until
it finds a view which is in the "stop view list" (probably "auLvs"
in your case).

From what I see I can also guess that you are using Diva
Verification. Diva uses the SI netlister which is configured
through a .simrc file in your working or home directory.
you have to edit that file and have something like

lvsSchematicViewList = '( "auLvs" "schematic" "symbol" )
lvsLayoutViewList = '( "auLvs" "extracted" "schematic" "symbol")
lvsSchematicStopList = '( "auLvs" "symbol")
lvsLayoutStopList = '( "auLvs" "symbol")

so that the netlister stops at the symbol view and does
not try to go further. try it, hope it works,

Stéphane

NB: I think you can also use a config view.

"Moises Paniagua" <moises_paniagua@hotmail.com> wrote in message
news:c7auc6$6ho$1@defalla.upc.es...

Hi!

Last week I asked if someone could help me to do a LVS in order to
check just the present layers, but not the previous ones. The answer was
that
I had to activate "macro-cell" in the extract options. I have done that,
however it does not work.

My situation is that I have to check the connections between a layout in
full-custom and a layout synthesized in Silicon Ensemble. For that purpose
I
have created a symbol from the layout (layout from SE) and a symbol from
schematics (full-custom).

The error that appears on the screen is the following one:

"Cannot find switch master cell I1 in cell view (middle_molecule
schematic)
from viewlist: "auLvs schematic ""

I1 refers to the layout synthesized in Silicon Ensemble.

Many thanks.

Moisés Paniagua
Technical University of Catalonia

 

[Moises Paniagua]

Thanks Stéphane,

You were right! This was the real problem!

Thanks a lot.

Moisés


"S. Badel" <stephane.badel@epfl.ch> escribió en el mensaje
news:409a3142$1@epflnews.epfl.ch...

Hi Moisés,

From what you say, your problem is related to netlisting.
When netlisting, the netlister searches for views in the
"switch view list" ("auLvs schematic" in your case) until
it finds a view which is in the "stop view list" (probably "auLvs"
in your case).

From what I see I can also guess that you are using Diva
Verification. Diva uses the SI netlister which is configured
through a .simrc file in your working or home directory.
you have to edit that file and have something like

lvsSchematicViewList = '( "auLvs" "schematic" "symbol" )
lvsLayoutViewList = '( "auLvs" "extracted" "schematic" "symbol")
lvsSchematicStopList = '( "auLvs" "symbol")
lvsLayoutStopList = '( "auLvs" "symbol")

so that the netlister stops at the symbol view and does
not try to go further. try it, hope it works,

Stéphane

NB: I think you can also use a config view.

"Moises Paniagua" <moises_paniagua@hotmail.com> wrote in message
news:c7auc6$6ho$1@defalla.upc.es...
Hi!

Last week I asked if someone could help me to do a LVS in order to
check just the present layers, but not the previous ones. The answer was
that
I had to activate "macro-cell" in the extract options. I have done that,
however it does not work.

My situation is that I have to check the connections between a layout in
full-custom and a layout synthesized in Silicon Ensemble. For that
purpose
I
have created a symbol from the layout (layout from SE) and a symbol from
schematics (full-custom).

The error that appears on the screen is the following one:

"Cannot find switch master cell I1 in cell view (middle_molecule
schematic)
from viewlist: "auLvs schematic ""

I1 refers to the layout synthesized in Silicon Ensemble.

Many thanks.

Moisés Paniagua
Technical University of Catalonia