to netlist a device for CDL but not for simulation

[Frédéric BATTIN]

Hello,
I have 2 instances ( A and B ) of the same device in a schematic.
For simu I want to netlist only instance A
For LVS I want to netlist A and B
In other words for simu, I only want to netlist A and for LVS I want
to netlist A and B.
nlAction ignore is not a good idea because there is not difference
between simu and LVS
Thank you for your ideas .
Fred

 

[rick]

On Feb 11, 6:31 am, Frédéric BATTIN <frederic.bat...@gmail.com> wrote:

Hello,
I have 2 instances ( A and B ) of the same device in a schematic.
For simu I want to netlist only instance A
For LVS I want to netlist A and B
In other words for simu, I only want to netlist A and for LVS I want
to netlist A and B.
nlAction ignore is not a good idea because there is not difference
between simu and LVS
Thank you for your ideas .
Fred

Hi Fred - would making one of them a blackBox work out?

Rick

 

[Andrew Beckett]

Frédéric BATTIN wrote, on 02/11/10 14:31:

Hello,
I have 2 instances ( A and B ) of the same device in a schematic.
For simu I want to netlist only instance A
For LVS I want to netlist A and B
In other words for simu, I only want to netlist A and for LVS I want
to netlist A and B.
nlAction ignore is not a good idea because there is not difference
between simu and LVS
Thank you for your ideas .
Fred

Fred,

One approach would be to copy the symbol of the device to a view called (say)
"ignore", and then open this ignore view and add a cellView property "nlAction"
with value "ignore".

Then create a config view with the hierarchy editor for the cell you wish to
simulate, and set instance B to have the "view to use" to be the "ignore" view.

Regards,

Andrew.

 

[Riad KACED]

Salut Fred,

If your 2 instances always go in pair, then you may consider creating
a super-symbol that encompasses both of them. You may then create a
Spectre/Eldo view for this super symbol where you tell the netlister
to take only inst A. This can be done with either CDF simInfo or by
pointing to a given subckt. As for LVS, you let the netlister taking
the schematic view where both instances are dealt with in the same
manner.

This solution may be very handy if your '2 instances' are used as a
pattern. I would go with Andrew's HED solution otherwise.

Cheers,
Riad.