Questions in APR using Encounter

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makanaky

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Hi,

I am new to APR so please excuse me if my questions seem lame.

Should the netlist output from synthesis have VDD/VSS ?

Also, Do I have to add Power rings in Encounter to be able to place std cells ? As I do place but nothing appears in the layout .

Thanks
 

the netlist should not have VDD/VSS after synthesis. Encounter has option to provide the VDD/VSS ports during the generation of the standard cell rows. The VDD/VSS are predefined. the POWER port information is from the LEF files which is used by the tools.
 

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