Forum Discussion

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

DDR3 Mem Controller w/ Uniphy Question

For the DDR3 Memory Controller w/ Uniphy IP (Cyclone V / Arria V family), there are some configuration options in Uniphy IP's GUI in Qsys. What are these features under Mode Register 2 and w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi Alex,

1) I don't want to manually control refresh rate. So I'll set to automatic as you suggested. Does this perform auto refresh or self-refresh? I recall there are two types of refresh when comes to DDR3, one being low-power mode.

2) Yes I'm using I-temp FPGA. I think we'll need double refresh rate due to high oper. temp. Should I set it to "Extended"? Also do I need to reduce the tREFI value by half as well?

Thanks!