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Buffer Tree synthesis Encounter

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kenambo

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Hi

While doing HFNS i got the high fanout nets using the dbGet command.

but when i give buffertree synthesis command it says, two nets have no driver so It shows an error message and it aborts the buffer tree synthesis operation.

The net it is telling "no driver" is actually a pin of macro. Do i need to give any special command?

Has anyone seen this problem before?

If so how to exclude the nets? or How to get correct high fan out nets from the design using encounter.?
 

hi,

whether the pin of macro is talking to a I/O or to any other logic ? Confirm it.
 

hi cyrax747,

The Pin from IO is actually not going to anywhere.. I searched it through object browser and it shows The pins are connected to ground symbol and there is no logics or drivers before the pins and it is not going to IO also.

I am so confused how to move forward any Idea?
thanks.
 

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