DC: Unconnected input ports warning

[nkef]

remove_unconnected_ports

I am getting the
Warning: In design 'codec_width16', port 'data_a[5]' is not connected to any nets. (LINT-28) , because some of the input ports dont drive any nets, how it is possible to remove them in dc?

Many thanks
Nkef

 

[hawk_chenbo]

design compiler warning lint-2

Use "remove_unconnected_ports" commnad to remove the sub-module's unconnected ports.

 

[nkef]

warning: unconnected hierarchy pin

Sorry i forgot to mention, i tried to remove them with:
remove_unconnected_ports [find -hierarchy cell {"*"}]
but nothink happens

 

[jackson_peng]

is not connected to any nets check_design

usually, the un-connected pin in from synthesis is also an un-loaded pin. in this case, you can just wave it off.

otherwise, it is probably the error exists in your RTL code, use check_design command to check it.

 

[spauls]

suppress unconnected port warning vhdl

no problem Layout tool will remove all unconnected , you can use spyglass also to see these potential warnings.

 

[nkef]

unconnected input synthesis

I finally removed them by running:
remove_unconnected_ports -blast_buses [find -hierarchy cell {"*"}]
after the elaborate command.

With unconnected_ports i got warnings when i was trying to export the design to vhdl.