Forum Discussion

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

General question about DDR2 megafunction IP

Hello, I am new to FPGA design and I need to use the DDR2 Megacore Controller. I read the user guide and other documentation i found but I don't understand everything... I have Altera PC...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I think, ECC operation was assumed for the memory, then the additional memory space isn't available for data storage. The 64M x 8 chip is used as 32M x 8 only, apparently. 32M x 8 is also written in the handbook somewhere. So the choice is 288M or 256M, you can use 288 M without ECC, if you have a usage for the special word length.