Qsys component -- conduit_splitter clock setting

I got the answer.

For those who have similiar problem, the conduit_splitter from Altera's reference design is not supposed to used by customers. Therefore, they don't have clock and reset settings in the conduit_splitter component. Anyone who wants to have a conduit splitter can simply add the clock and reset interface on the original one.

And also the clock and reset setting of the connection interface on the other component need to match the concuit clock and reset setting.

I hope it helps.