clock synthesis with a generated clock by a macro (DC)

[sicheng163]

Hi, all

I have to create a clock that is generated by a submodule, can I just use create_clock like this:

create_clock -period 10 [get_pins U_SUBMODULE/clkout]

because I saw this message in a book:

create_clock is used to ... This command is applied to a pin or port, object types.

so, I think it can be used on a pin?
or should I use create_generated_clock, but this macro is not simply a divider module, it's complicated,
what should I do now?
thanks!!

 

[dianin]

For Design Compiler, create_clock command can be used.

create_clock -period 10 [get_pins U_SUBMODULE/clkout]

since it is a hierarchical pin, in layout tool like ICC you have to give driver pin of (U_SUBMODULE/clkout).