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Generated symbol pins

Michael Robinson
I'm writing a skill routine to create a symbol.

When I analyze the geometries in a generated symbol (the way Cadence does it), I notice that the pins are flattened.

schCreateSymbolPin has the option to place an instance or to flatten the data.

When I set that option to t, I get a warning:

schCreateSymbolPin(cView pinMaster "miker" "input" (1.0:1.0) "R0" t)

*WARNING* (DB-270263): cannot copy Text Display object by itself

db:0x5cffda1

...and the pin label doesn't show up.

What is the proper way to emulate the way Cadence places the pin?

How can I find more information about this warning (DB-270263)?

  • Michael,

    Please log a service request on this via http://support.cadence.com - I reproduced the problem, and I think it's a fundamental problem with flattening things with textDisplay objects (the same thing happens if you use dbFlattenInst on an instance which has a textDisplay inside). Effectively it loses track of which object to attach the textDisplay to.

    Normally the pins that Cadence uses which are flattened do not have textDisplays associated with them, so this wouldn't usually happen (e.g. if basic/sympin/symbolNN is used).

    Regards,

    Andrew.

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