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Altera_Forum
Honored Contributor
Honored Contributorddr2 sdram
Hello, I'am new to SOPC build,and sorry for my poor english. I have bought a dsp development kits from alter,and there is an ddr2 sdram on this development board. this is the development kits I...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- something goes wrong when using the full data width for the DDR2 [email protected] --- Quote End --- Do you raise your ddr2 sdram's memory by change "memory data bus width" or change the "chip select"? I found that when I set "memory data bus width" to 32,and let "chip select" to be 1, I can use 128M of the ddr2 sdram.But when I set "chip select" to be 2 or change "memory data bus width" to 64,they both don't work well. I found another phenomenon, quartus9 will assign "dq,dqs,dm" automatically,and you must use these automatically assigned pins,otherwise you will get a "DDIO" error when compile these project.
