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Altera_Forum's avatar
Altera_Forum
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13 years ago

May I use ddr3 uniphy without RDN and RUP

Hello, I have designed a project using DDR3 uniPHY to test a SODIMM. When testing, 'local_cal_success', 'local_cal_fail', and 'local_init_done' never asserted. It seems that the uniPHY or t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

&The question refers to Stratix IV hardware features, not DDR 3 IP. If it's right that uncalibrated OCT isn't supported by the device family, as suggested my the manual, you have a problem.

Arria II GX can't work with DDR 3 memory modules due to missing write levelling, by the way. The DDR 3 support is limited to individual memory chips connected in balanced tree topology.