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  3. global net connections for VSS are missing after the sa...

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global net connections for VSS are missing after the save

anil chatrathi
anil chatrathi over 10 years ago

Hi All,

I have  design, where FP is done and global net connection rules are created and saved the database.

If I load the database the connections are missing for only for VSS in all std cells  giving the below errors:

**ERROR: (ENCDB-1220): A global net connection(GNC) rule for connecting pin 'VSS' of cell 'AND' to global net 'VSS' was specified.  The connection cannot be made because the ground pin and the power net are not of the same polarity.  Check the imported design and make sure the GNC rule is correctly specified or generated.

I tried reconnecting the global nets but give the same error above.

Please help me if any one face this kind of issue. 

Regards,

Anil

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  • anil chatrathi
    anil chatrathi over 10 years ago
    Thanks, kari. Actually these nets ( VDD and VSS) are defined in the input netlist with out giving any atrributes. This is creating the isse.
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  • anil chatrathi
    anil chatrathi over 10 years ago
    Thanks, kari. Actually these nets ( VDD and VSS) are defined in the input netlist with out giving any atrributes. This is creating the isse.
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