Help me with Clock Tree Synthesis

[no_mad]

cts challenge

Hi all,

Need your opinion on synthesis. I need to do a Clock Tree Synthesis. Since my output signal is a pulse train and it is not a registered output. This signal goes to a combo logic (mux) before it’s goes out. Plus, this pulse train must sync with my main clock (posedge of sck).

Now, the questions are:
1. Do I need to do clock tree as well for this signal path?
2. If yes, please give me some suggestion or idea on how to do it?

FYI, this signal path is goes to a module, which contain only mux (combo logic) and it is a separate module.

Thanx in advance

 

[feel_on_on]

CTS challenge

It diffcult to understand what u said!Or u can speak in detail with a figure!

 

[no_mad]

Re: CTS challenge

Sorry for bad explanation.

Attached is the figure of this issue.

 

[haosg]

CTS challenge

create_generated_clock output -source main_clock in top level, thus Astro would make that output have same waveform with main clock's sync point like DFF's CK pin.