Using DDR SDRAM Controller

[Altera_Forum]

Hello, 

 I have instantiated two DDR SDRAM controller. And when compiling my project by quartus, I found an error which highlights that the second controller pins were not assigned.  Q1: Can I use more DDR SDRAM Controller than one ? Q2: How can I assign DDR SDRAM Controller pins?  Thanks.

[Altera_Forum]

Which DDR controller are you using? While creating the core, you designate the IO locations. So you can't create a single controller and use it twice, you have to create two separate controllers. I haven't read them completely, but this should help: 

Legacy: http://www.altera.com/literature/an/an392.pdf Altmemphy: http://www.altera.com/literature/an/an462.pdf

[Altera_Forum]

Thank you Rysc :)