Thank you for contacting the Intel Embedded Community.
In order to better understand this situation, we would like to address the following questions:
Could you please let us know the part numbers of the processor and chipset related to this situation?
Could you give us all the information of the Memories that you are using?
Could you clarify if this situation happens with your design or with a Customer Reference Board (CRB)? How many units are affected? How often it happens? In case that this issue is related to your design, could you please reproduce this issue in a CRB, and lets us know the consequences?
Could you please update the BIOS to the latest version, replicate the listed circumstance, and let us know the effects of this change? By the way, please give us all the information of the BIOS.
Please give us all the information requested through the previous questions to better understand this problem.
We use E3-1268Lv3 with DH82C226 PCH companion part.
We have tried Apacer 78.A1GDF.AFG0C and Ballistics
BLS4G3D1609ES2LX0.16FER2 DIMMs. These same DIMMs
work fine in the A DIMM slot, not in the B slot.
We think this is probably a layout problem. We wanted to be
absolutely sure that we have current documentation for
trace lengths and trace matching and trace lengths within the
processor package, before we do another PCB revision.
Thanks for your update.
It is important to let you know that you are implementing a Denlow platform.
Due to this fact, we suggest you follow the guidelines stated in section 4 of the Haswell Desktop and Denlow-WS Platform Design Guide (PDG) For Use with Haswell Processor and Haswell Platform Controller Hub (PCH) document # 486711.
We hope that this information may help you.
Thank you for your help so far.
The version of the 486711 document I have is Rev 2.3 dated Sep 2014.
Is this the latest version of this? Also, this document doesn't contain
the lengths of signals within the Haswell package. These are only available
in the 490765_Intel_2013_Platform_SM-ATLC_Rev0p70.xlsm spreadsheet
as far as I know. Are the numbers in this spreadsheet correct, or do more
recent versions of these numbers exist?