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Warning when I try create a pin in layout but does not create a pin

psill00 over 2 years ago

I am creating pin in layout for vdd1 and vdd2 in a script

I get a warning of:

WARNING* (DB-270000): dbCreatePinOnTerm: Terminal with name 'vdd1' already exists

The layout cellview has nets vdd1 and vdd2 but the terminals have only vdd2

viewing the two nets db varialble I see the

vdd1 = netDb1~>name

nil = netDb1~>term~>name

vdd2 = netDb2~>name

vdd2 = netDb2~>term~>name

when I try to create a pin it does not create the pin for the vdd1 ( I use dbCreatePin )

when I try to create a pin from the Cadence Pin form labels I get the same warning and no pin created

Can you help create the vdd1 pin

Paul

Andrew Beckett over 2 years ago

Paul,

What do you get if you enter these two commands - please post the output of each:

cv~>terminals~>name

dbFindTermByName(cv "vdd1")~>net~>name

Regards,

Andrew
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psill00 over 2 years ago in reply to Andrew Beckett

cv~>terminals~>name ( I omitted the other terms )
"vdd0" "vdd1" "vdd2" "vss"

dbFindTermByName(cv "vdd1")~>net~>name
"vdd2"

Paul
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Andrew Beckett over 2 years ago in reply to psill00

Paul,

As you can see, you have the vdd1 terminal on the vdd2 net (there's no requirement for a terminal name to match the net name - this allows a different external to internal name). If you don't want that and want to create there vdd1 terminal on the vdd1 net, you'll need to delete the old terminal first:

dbDeleteObject(dbFindTermByName(cv "vdd1"))

Then you should be able to use dbCreatePin as you expected.

Andrew
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psill00 over 2 years ago in reply to psill00

Thanks it worked
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