Cyclone III and SDR SDRAM

Look at the table on Page 3 of an447.pdf the SDRAM is your 'driver' in this case, reference the datasheet for your SDRAM to obtain it's operational voltage on it's interface pins to determine whether you require termination resistors or clamping diodes activated on the Cyclone III.

Use Table 3 on Page 10 with the voltages you assumed on Table 1 to determine the the value of the current flowing into a receiving pin on the cyclone with no termination, and if termination resistors are required.

Your still not done though, remember you have to do this same process with your 'driver' if it is using bi-directional interface pins, using the specifications in the datasheet for your SDRAM.

Look at schematics for the Cyclone III Nios Embedded Evaluation Kit (download zip from Altera's site)

From what I understood on the Cyclone III NEEK schematic you should place only one set of termination resistors in the centre of the transmission lines, also by the look of the PCB layout all lines must be equal in length.

I'm 80% sure thats the angle of attack required, someone shoot me down if i'm talking sloblocks