Hi
I am currently designing a circuit with a Virtex 4 FX FPGA and QDR I memory chip operating at 250MHz. I have a couple of questions :-
1) Can someone give me some advice regarding the decoupling capacito requirements? I have had a look around the web but there seems to be lack of info.2) Can I get away with no termination? The longest track will be aroun
1.5". I have looked at a micron app note reagrding DDR2 and they stat that for DDR2 around 2" is the max without termination. But as this is different memory I am not sure if this would be valid.Cheers
Jon