Forum Discussion

Honored Contributor

12 years ago

How to process this timing issue?

It seems the data path's delay is too big. Do you have any idea of decrease the data path delay?

Honored Contributor

12 years ago

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Try to add more pipeline stages in that path.

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Hi Andrew:

It's ok now, thank you for you advise.

I just modified the code from

if hitok/=hitok_q and hitok='1' then--Latch the Coarse Time
          CT_Latch <= CT_cnt_q;
       end if;

if hitok_q/=hitok_2q and hitok_q='1' then--Latch the Coarse Time
          CT_Latch <= CT_cnt_q;
       end if;

The relation among "hitok", "hitok_q" and "hitok_2q" is as below

hitok_q <= hitok;hitok_2q <= hitok_q;