SOPC HP DDR2 Controller Clock Rate

Hi Jake,

I totally agree with your answers to my posts.

But there is something else what confuses me:

From the initial post from rogerleo saying "...My memory can run at 400MHz CL = 3, 533MHz at CL = 4 and 667MHz at CL = 5..." I got the impression he is using a DDR2-667 memory device. That his MHz-values are in fact rather data rates than clock frequencies, especially if you look to the CAS-Latencies they belong to. (A DDR2-800 device with a 400MHz clock would need CL=5 better CL=6 instead of CL=3.)

And a DDR2-667 device you usually drive with 333MHz clock.

Tuning fMAX above that would lead in overclocking his memory device.

Or do I miss the point of something totally fundamental???

Det