Multiple Memory Controllers

Hi,

That existing thread was really concerned with how to make a "single interface" span two opposite sides of a device.

Two controllers on the same side is real easy in Altera devices so long as either:

a) They are both operating at the same frequency, so can share the single DLL.

b) One of them is operating in PLL capture mode, so doesn't need the DLL.

Altera actually have an application note on this, its not bad, please see:

http://www.altera.com/literature/an/an392.pdf

I've attached a Stratix II v71 schematic design of how to do this:) I've set all the core side user signals as virtual pins for ease of example

Regards

Chris