derive_pg_connection -power_net VDD -power_pin VDD -ground_net VSS -ground_pin VSS
derive_pg_connection -power_net VDDO -power_pin VDDO -ground_net VSSO -ground_pin VSSO
derive_pg_connection -power_net VDDQ -power_pin VDDQ -ground_net VSSQ -ground_pin VSSQ
derive_pg_connection -power_net VDD -ground_net VSS -tie
