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Ho to find top level connectivity for instances using SKILL in Layout

Miguel V

Hi,

I have a set of bondpads and I am trying to write a SKILL function that will display the coordinates and top level connectivity for each bondpad.  For example, I have pads labeled PWR, PWRres, GND and clk at the top level. I want the function to output something like this:  bondpad   (x,y)     PWR

I got the coordinates to display properly but still having troubling pulling the net associated with each bondpad.  I've searched quite a bit on here and other sources but I'm currently stumped.  Any ideas on how to approach this or are there other properties associated with cv~>instances that I am missing?  I've tried using inst~>conns~>net~>name but all I get are the connections at the cell level which end up being "IO" or "sub"

Thanks 

Parents

  • Flattening is almost certainly overkill and not a good idea - it may destroy the connectivity anyway. It's easy enough to traverse the hierarchy in SKILL (numerous examples on these forums) but I wouldn't guess what the right way to do this without seeing your data or your current code, which is why I suggested going to customer support so that somebody can advise with the correct contextual information to hand.

    Regards,

    Andrew.

Reply

  • Flattening is almost certainly overkill and not a good idea - it may destroy the connectivity anyway. It's easy enough to traverse the hierarchy in SKILL (numerous examples on these forums) but I wouldn't guess what the right way to do this without seeing your data or your current code, which is why I suggested going to customer support so that somebody can advise with the correct contextual information to hand.

    Regards,

    Andrew.

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