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Honored Contributor

10 years ago

Classic DDR SDRAM for Cyclone ii does not work with QSYS

Good day. I'm currently doing an image processing project in a DE2 board that requires us to use a RAM. Unfortunately, QSYS does not recognize the DDR_SDRAM classic but sad to say, it is the only compatible SDRAM for Cyclone ii. Can anyone suggest what we can do to resolve this problem? Thanks in advance

http://www.alteraforum.com/forum/attachment.php?attachmentid=11621&stc=1

(MegaFunction wizard showing only the compatible RAM with Cyclone ii which are all classic)

2 Replies

Altera_Forum
Honored Contributor
10 years ago
Hi,

do you want to use external RAM or on-chip RAM? Are you able to use on-chip?

Furthermore, have you read the documents of that DE2 board like

https://www.altera.com/support/training/university/materials-ip-cores.html

https://www.altera.com/support/training/university/materials-tutorials.html

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=165&no=30&partno=4

There are instructions how to use the SDRAM as well as internal on-chip RAM. That should help you getting your project running.
Altera_Forum
Honored Contributor
10 years ago
Friend... this is maybe due to cyclone ii is too old for ddr series??