How to increase Clock skew

[phutanesv]

If suppose I want to add a clk skew for some F/F out of a no of f/fs connected with same clock.What would be the maximum freq in such a case?If the skew is relative to some other F/F then how do I calculate optimum clk skew in such a case?

 

[nanda_kishore]

To add skew to a particular FF or a group of FFs, all you need to do is add buffers in the clk path.. but where you add the clks is the point.. if you want to add skew to a particular FF, then add the buffer to the leaf of the clock which is only supplying clk to that FF. on the other hand if you want to add the skew to a set of FFs connected by a single clk.. add a CLKBUF just b4 the FF where you want the skew addition to be started..