FPGA Central

Hi,

Is it possible to define clocks in the .sdc file of a design, while
those clocks only appear in a peripheral or a core, i.e., clocks not
in the top level of the design.

Thanks,
-J

On Dec 6, 9:00 am, [email protected] wrote:
> Hi,
>
> Is it possible to define clocks in the .sdc file of a design, while
> those clocks only appear in a peripheral or a core, i.e., clocks not
> in the top level of the design.
>
> Thanks,
> -J

Yes. This is how I have defined an internal clock:

define_clock -name {ntherclock} -freq 100.0000 -clockgroup
otherclock_clkgroup