Getting DDR3 ce and ue Ecc errors

sedat_sedat — Sun, 25 Mar 2018 21:04:34 GMT

Hi,

I have a custom board with T4240 SoC with ddr data rate 1866.

I am getting ddr3 ecc errors in only one ddr controller under heavy network load. With one dimm I can repeat the erroronous situation if i insert it onto controller 2.

All the controllers are configured with the same configuration parameters.

If dont insert any dimm module onto controller number 2 i am never getting ecc errors. Since with only 2 controllers the network performance of the system is degrading nearly by 1.5 times I must have to use 3 ddr controllers.

We have checked the pcb but couldnt find any mistakes that may cause ecc errors. Does the configuration of the ddr controller cause ecc errors?

I have no ddr validation tool. But I have tried some configurations by changing the write leveling and odt parameters. The situation is not even changing even I am trying different values for write leveling and odt parameters. I am getting ecc errors in a short time like 10 seconds after applying heavy load to the board.

If i use the sama dimms with the ddr working at a

slower rate like 1333, I am also getting the ecc errors but after a much longer amount of time.

Does anybody have any idea why I am getting ecc errors on the specified controller. Is it a signal integrity or a ddr misconfiguration situation.

Any help will be appreciated.

Re: Getting DDR3 ce and ue Ecc errors

Bulat — Fri, 04 May 2018 12:03:30 GMT

Please open a technical case because investigation of your problem requires a lot of specific information from your side.

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Getting DDR3 ce and ue Ecc errors

Re: Getting DDR3 ce and ue Ecc errors