A user-defined generated clock meets the following conditions:
- Defined using the
create_generated_clockcommand. - Attached to a netlist object, preferably the root pin of the clock tree.
Specify the master clock using the -source
option. This identifies a pin or port in the design through which the master clock
propagates. Common choices include the source point of the master clock or the input
clock pin of the cell that generates the new clock.
Important: The
-source option accepts only a pin or port netlist objects. It does not
accept clock objects.