Shift delay block (data valid) in simple PI controller using ALTERA FP libraries

--- Quote Start ---

[/B]How do I introduce a "shift delay" to the data and valid signal so that I synchronize the system? The easy way is to add registers in series but sounds kind of dumm in case of 30 cycles delay for example.

--- Quote End ---

The method I usually use is to infer ALTSHIFT_TAPS in my code.

See page 13-40 of this document: http://www.altera.com/literature/hb/qts/qts_qii51007.pdf