net/node name aliases in spectre netlist

[Sugan]

Hi all,

I am trying to add a alias for existinig nets and i couldn't find a
way to do this( or the syntax). Can someone please let me know how i
can do this?

Can someone also please point me to ta good tutorial on spectre
netlist format/syntax since i'm new to this.

Thanks,
Sugan.

 

[Riad KACED]

Hi Sugan,

One very easy way to do this is to insert a small resistor between the
aliased, just something small enough to break the connectivity without
breaking the functionality.
If you are using DFII, then you may use the patchcord devices as
detailed in the VirtuosoŽ Schematic Editor User Guide, doc available
from cdsodc/cdnshelp and from your IC stream.
Also, many PDK providers often include their device for aliasing. You
may look at your PDK docs if any is supported.
I don't know of anything in Spectre though. The Spectre doc is
available from your MMSIM stream. Look at previous posts ... Just
search Spectre Doc. OK, it is in $MMSIMHOME/doc/spectreuser/
spectreuser.pdf

Cheers,
Riad.

 

[Andrew Beckett]

Riad KACED wrote, on 08/13/09 20:27:

Hi Sugan,

One very easy way to do this is to insert a small resistor between the
aliased, just something small enough to break the connectivity without
breaking the functionality.
If you are using DFII, then you may use the patchcord devices as
detailed in the VirtuosoŽ Schematic Editor User Guide, doc available
from cdsodc/cdnshelp and from your IC stream.
Also, many PDK providers often include their device for aliasing. You
may look at your PDK docs if any is supported.
I don't know of anything in Spectre though. The Spectre doc is
available from your MMSIM stream. Look at previous posts ... Just
search Spectre Doc. OK, it is in $MMSIMHOME/doc/spectreuser/
spectreuser.pdf

Cheers,
Riad.

The usual way to do this in spectre is to use an "iprobe" (in effect a 0V source).

This exists in analogLib too.

If you want to do this through the hierarchy within ADE, look on sourcelink for
a solution I wrote - search for "deepprobe"

Andrew.