Running SDRAM at double speed

Victor,

I don&#39;t know the answers to the question(s) you&#39;re asking, but since those who do are silent I will make some suggestions. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

You may be able to do what you want through trickery.

Run your CPU/System at 50MHz, and run the clock to your SDRAM at 100MHz. Your SOPC will still say 50MHz so you may/will need to adjust the timing settings in the SDRAM controller wizard. Since the timings are going to map to a number of clocks not ns you can raise the values until it works. (Or lower them until it breaks)

Basically you should be able to get the 50MHz bus to to wait fewer 50MHz clocks because the mem is actually going to be done in half the time. If 50/100 draws too much power, try 40/80. I&#39;d keep it a 2X multiple.

Can&#39;t hurt to try.

You also might actually verify the situation with Nios2 since it may have a little different power draw? And if you have any LED&#39;s lower the current and try to not toggle any lines that you don&#39;t really need to.

Ken