what's non-inverted input pin ?

Ok, thankyou Dave, FvM, Adrianer!

Finally I find out the problem.

I use block schemata to connect inputs, outputs to clock of pll, but I don't use wire, I put the clock input beside (adjecent) to the clock pin of block pll. For normal pin it connects automatically, but in this case it doesn't connect to clock of pll. Then I put the clk input a distance from block pll and wire them by wire. It works.

It took me 2 days!!!