Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

DDR3 Native to Avalon-MM conversion

I have a system, wherein user logic is interfaced to DDR1 SDRAM Controller using native interface in Cyclone 2 device. The project was built in Quartus 11.1 and when we generate the DDR1 IP, either A...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

You have two choices: 1) Change your user logic to interface using Avalon and add Altera DDR3 controller to the project (this is your Avalon to Native DDR3 interface) or 2) Change your user logic to interface to DDR3 instead of DDR1. Which is the better choice would depend on what your user logic looks like.

It's less likely that you would be able to write something that looks like native DDR1 on one end and native DDR3 on the other. I don't think there's anything like that available.