Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

flancter and timequest

Dear All, i'm using classical implementation of flancter to realize signalling between multiple clock domains (see down). Now, this design is proven to be hazard free, however timequest of cours...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Isn't that somewhat dangerous? afaik this command will completely ignore all the relation between these clocks. So if you have forgotten somewhere a synchronization circuit between these two domains, timequest will not complain. is this correct?

d.

--- Quote Start ---

In the case of two clock domains, you just tell TimeQuest they are separate via:

set_clock_groups -exclusive -group clk_A -group clk_B

And TimeQuest will set false paths for you.

Cheers,

Dave

--- Quote End ---