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Supporting DDR4(MTA72ASS8G72LZ ) for 10AX057N3F40E2SG

Rk_Athram
New Contributor I
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Hi,

 

Does DDR4 MTA72ASS8G72LZ will support arria10 FPGA(10AX057N3F40E2SG  ) ?

 

 

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AdzimZM_Intel
Employee
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Hi,


I am highly recommends to check the specs in EMIF Spec Estimator webpage. Link: https://www.intel.com/content/www/us/en/support/programmable/support-resources/support-centers/emif-spec-estimator.html


I have quickly checked with the EMIF Spec Estimator for Arria 10 GX -E2 device. The device can support LRDIMM memory format with 1DPC 4 ranks memory topologies.

Please let me know if you have any concern.


Regards,

Adzim



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Rk_Athram
New Contributor I
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Hi,
Thank you for the response.

MTA72ASS8G72LZ is 2666Mhz, as per Arria10 device it will support maximum of 2400.
so we have chosen to work with 2133Mhz.
From EMIF existing template we have matched timing data with data sheet it was proper.

 

As latency and timing are downgraded/taken with respect to 2133 speed.

 

Rk_Athram_2-1689765180177.png

 

serial presence data for LRDIMM, default values(which are accurate with template)  should be consider exiting values 
SPD byte 137 : 0x65
SPD byte 138 :0x05

as per datasheet (https://in.micron.com/products/dram-modules/lrdimm/part-catalog/mta72ass8g72lz-2g6)

SPD byte 137 : 0x75
SPD byte 138 :0x0A

MTA72ASS8G72LZ-2G6B2137DDR4-REG OUTPUT DRIVE FOR CONTROL75
MTA72ASS8G72LZ-2G6B2138DDR4-REG OUTPUT DRIVE FOR CLOCK0A

 

 

So the question is 

Which SPD values we needed to set in IP?

do we need to go with Datasheet or template values ?

what will the effect on data transfer/reception ? 



Regards,

Rajesh

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