On Nov 24, 8:07*am, bonnerfme <xiaoling...@fme.fujitsu.com> wrote:
> Hi there,
>
> I have a question regarding clock deskewing. My design has a sub
> module that gets its clock signal from a regional clock pin, however,
> the clock skew is too large and causing timing violations.
>
> I read about something on DCM and thought about using it to deskew
> this regional clock, but it seems to me that DCM can only be used in
> conjunction with global clock lines. The board layout is fixed, which
> means no way I can use a global clock line for this signal, have to
> live with it.
>
> Has anybody experience with regional clock deskewing?
>
> Thanks a lot!

Are you sure you mean deskew? That is a routing issue. I don't
see how a DCM would help unless you're talking about the skew
between the regional clock and some other clock.

Confused,
Gabor