Get confuse with the SSRAM

Hi,everyone.

I want to use the SSRAM(IDT3678) for my NIOS system. I tried several times to add it in the

"Interface to user logic" but it didn't work.Is the problem that I didn't set the port properly or

the timing was not right.I tried to change the PTF file,It didn't work neither.

Am I on the right track? Thanks.