Data transfer from hardware Modules to Nios

The code is running entirely on on-chip ram both data and instructions, so I assume is the best in terms of speed. I am not using any caches, actually whenever I use them the code doesn't run which is kind of strange!!

There are no delays on wiznet code just raw read and rights to register.

I follow your advice changing the times to ns but the result was the same. According to turn around time it should be the time changing from write to read measured from the last command so it has to be according to datasheet higher than tcs+tcsn i suppose. For your information the times I am using now are:

Read wait time: 100ns

Write wait time: 100ns

Setup time: 0 ns

Data hold time: 10ns

Max pending: 1

Turnaround time: 130ns

Read latency: 55 ns

I have also include the code I am using at the moment for Nios.