I have an inquiry regarding the power nets in power planning step.
when I write get_nets VDD command after derive_pg_connection command, I get this warning message "Warning: No net objects matched 'VDD' (SEL-004)"
So, I can't understand what is the reason for this warning message?!
I attached below a copy of the command execution results.
Thanks in advance
icc_shell> derive_pg_connection -power_net VDD\
-ground_net VSS\
-power_pin VDD\
-ground_pin VSS
Information: connected 18799 power ports and 18799 ground ports
1
icc_shell> get_nets VDD
Warning: No net objects matched 'VDD' (SEL-004)
Are you sure that the power nets should be named
"VDD" and "VSS"? In the tools and PDKs I have used,
"vdd!" and "vss!" (global nets, for inherited connections)
or "vdd", "vss" (for direct-wired schematic design style)
are much more commonly used.
You might inspect one of the logic cells and see
what they think their power pins are called.
Are you sure that the power nets should be named
"VDD" and "VSS"? In the tools and PDKs I have used,
"vdd!" and "vss!" (global nets, for inherited connections)
or "vdd", "vss" (for direct-wired schematic design style)
are much more commonly used.
Are you sure that the power nets should be named
"VDD" and "VSS"? In the tools and PDKs I have used,
"vdd!" and "vss!" (global nets, for inherited connections)
or "vdd", "vss" (for direct-wired schematic design style)
are much more commonly used.
You might inspect one of the logic cells and see
what they think their power pins are called.