Layout Net Tracing

[vtcad]

When I use the Connectivity->Mark Net function for highlighting layout
nets, I see it returns the number of shapes in that net, is this
information stored somewhere I can retreive it, in order to use it in
a Skill Program? Ideally I would like to supply my program with a list
of Pins or Labels and gather the data of all shapes connected to each
of those Pins, with out using the pulldown menus.

thanks in advance,

 

[okguy]

It calculates it based on your tech file :
Poly connected to Metal1 through Contact
Metal1 connected to Metal2 through Via12
. .

Don't try to trace your supplies !!!
... or sleep a night at work

 

[vtcad]

I understand it uses the layer connection information from my tech
file, but when i select the net in cadence, is there any way to have it
return a list of the shapes and their db information?
okguy wrote:

It calculates it based on your tech file :
Poly connected to Metal1 through Contact
Metal1 connected to Metal2 through Via12
. .

Don't try to trace your supplies !!!
.. or sleep a night at work

 

[Andrew Beckett]

No. There are some PCRs asking for this, but to be honest it's not that obvious
exactly what it should return, given that not all shapes will be at level 0 in
the hierarchy... and you probably don't want it to generate flattened shapes.

I do recall talking to R&D about this a while ago, and one idea was to have
a callback which got called for each generated shape - but this was just us
thinking out loud at the time...

Andrew.


On 28 Aug 2006 17:45:16 -0700, "vtcad" <Roland.Fontaine@gmail.com> wrote:

I understand it uses the layer connection information from my tech
file, but when i select the net in cadence, is there any way to have it
return a list of the shapes and their db information?
okguy wrote:
It calculates it based on your tech file :
Poly connected to Metal1 through Contact
Metal1 connected to Metal2 through Via12
. .

Don't try to trace your supplies !!!
.. or sleep a night at work
--

Andrew Beckett
Principal European Technology Leader
Cadence Design Systems, UK.