Device Family: Arria® V, Cyclone® V

Type: Answers, Errata

Area: EMIF, Intellectual Property



Possible Read/Write Errors for DDR2 and DDR3 Hard Memory Controllers on Arria V and Cyclone V Devices at Low Vcc and Extreme Temperatures

Description

This problem affects DDR2 and DDR3 products.

The hard memory controller on Arria V GX, Arria V GT, Arria V SoC, Cyclone V GX, Cyclone V GT, and Cyclone V SoC devices might exhibit read/write errors during normal operation under low Vcc core voltage and extremely hot or cold temperatures.

The following protocols and frequencies are affected:

  • For Arria V GX/GT/SoC devices, DDR2 at 375-400 MHz and DDR3 at 375-533 MHz
  • For Cyclone V devices, DDR2 at 300-400 MHz and DDR3 at 300-400 MHz.

Workaround/Fix

If you are using Arria V GX, Arria V GT, Cyclone V GX, or Cyclone V GT devices, the workaround is to install the Quartus II software version 13.0 SP1 DP5 patch, and then regenerate the external memory interface hard memory controller IP and recompile the design.

If you are using Cyclone V SoC or Arria V SoC devices, you should install the Quartus II software version 13.1, and then regenerate the external memory interface hard memory controller IP and recompile the design.

This issue will be fixed in a future version.