How to connect an instance with a deeper hierarchical net in schematic, like deepprobe it does

It cannot be done in the schematic.

Pins are used to jump connectivity levels of the hierarchy, when you attach a net to a symbol pin, that creates an instance terminal which connects the net at the current level of the hierarchy to the terminal in the nested schematic. This is the way the OA database works. Without a terminal in the schematic, you cannot connect a net from a higher level of hierarchy into the schematic.

The reason layout works is because you are creating a physical connection which is managed by the LVS engine which looks at the physical layout through the hierarchy. The schematic has no such engine.

You will have to modify the schematic to add the pins and generate a new symbol.

Ted

Yes Ted, you are right.

I already knew about it. But I had the hope that someone of smart guys from Cadence will show us a trick or a workaround for it.

It is similar to the global nets problem. So it should be solvable with a little effort and creativity.

Regards

Laurent

Global nets can be handled by adding inherited nets. You would think you could do something like that but the inherited net functionality forces a "globalness" on the nets and the schematic would still have to be modified.