Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
20704 Discussions

Dual rank DDR3 device

Altera_Forum
Honored Contributor II
1,085 Views

Does Cyclone V SoC hard memory controller support dual rank DDR3? I couldn't find exact information regarding dual rank. 

 

I already checked that it should be ok. My memory device would consist of two "dual rank" DDR3 chips each with two x16 4Gb ranks. And on the HMC there is two CS's, two ODT's, two CKE's, four DQS's (one for each x8).  

 

Total memory space would be 4GB because this would added for the HPS HMC ( 2GB ) and also for the FPGA HMC ( 2GB ). Just with four chips! 

 

So this would not be a DIMM style memory. This would be a point to point memory solution.
0 Kudos
2 Replies
Altera_Forum
Honored Contributor II
339 Views

have you taken a look at this? 

 

http://www.altera.com/technology/memory/estimator/supportselector.html 

 

they mention 2 chip selects, but are not explicit about dual rank
0 Kudos
Altera_Forum
Honored Contributor II
339 Views

Thanks. Yes, I already looked over that table. Dual ranks are mentioned but only for DIMM's.

0 Kudos
Reply