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Altera_Forum
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10 years ago

Cyclone V 5CEFA4F23C8 has 24 DQ pins for LPDDR2 Hard Memory Interface

Hi. I am using the 5CEFA4F23C8 and LPDDR2 in a design, and I want to use the Hard Memory Interface for LPDDR2. I've noticed that the LPDDR2 hard interface has 24 dedicated DQ pins. That se...
Altera_Forum's avatar
Altera_Forum
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10 years ago

I think you are right, I read up on ECC in HMC/EMI documentation, and an additional 8 bits are needed for ECC. And now I was able to instantiate a 24-bit LPDDR2 UniPHY interface in Qsys when I turned on ECC.

So thank you very much for your reply, now I know why the interface is 24-bits, and if I ever need ECC I know what to do :)