Ignoring Transmission Lines in LVS

[Jake]

Hi,

Here's what I'd like to do. I have a balanced transmission line tree
that has one buffer on one end and several buffers on the other, and
I'd like to show this in my schematic. Also, I made a 'spectre'
representation that wraps around a netlist, so that when I netlist the
entire design, this structure is included. However, it's really just
one net, so if I were to do an LVS on the schematic, it wouldn't work
(in the schematic it's many nets, in the layout, it's one). Is there
a way to equate the many nets in the schematic to one net in the
layout?

Thanks,
Jake

 

[S. Badel]

If I'm understanding correctly, your transmission line is a "black box"
in schematic.

You didn't say which LVS tool you are using, but assuming it's Assura,
creating an auLvs view for your transmission line and using
filterDevice( "yourTL" short("in" "out")) rule can probably do the job.

Stéphane


Jake wrote:

Hi,

Here's what I'd like to do. I have a balanced transmission line tree
that has one buffer on one end and several buffers on the other, and
I'd like to show this in my schematic. Also, I made a 'spectre'
representation that wraps around a netlist, so that when I netlist the
entire design, this structure is included. However, it's really just
one net, so if I were to do an LVS on the schematic, it wouldn't work
(in the schematic it's many nets, in the layout, it's one). Is there
a way to equate the many nets in the schematic to one net in the
layout?

Thanks,
Jake