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the Tdivw_total & VdiVW_total of DDR4-2666 when use the EMIF IP on Arria 10

lambert_yu
Beginner
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Hi all,

 

    I have one problem, when I customize the EMIF IP on Arria 10, the Tdivw_total & Vdivw_total should be set following the value in the datasheet of MT40A512M16LY-075, or should be kept following the preset value which provides in the preset example? And in the DDR's data, the Tdivw_total & Vdivw_total are all maximum value, why it's minimum value in the EMIF User guide?

     value in datasheet of MT40A512M16LY-075 : Tdivw_total : 0.22UI, Vdivw_total : 120 mv

     Value following the preset value : Tdivw_total : 0.20 UI, Vdivw_total : 138mv,

   So should I set which value is preferable? Could someone help me and give me some advice?

 

Brs,

Lambert

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yoichiK_intel
Employee
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Hi Lambert

 

The Tdivw_total and Tdivw_total  parameter slightly differs across the DDR4-2666 bin. Please check the datasheet which you use actually and use the number on the datasheet.

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yoichiK_intel
Employee
799 Views

Hi Lambert

 

The Tdivw_total and Tdivw_total  parameter slightly differs across the DDR4-2666 bin. Please check the datasheet which you use actually and use the number on the datasheet.

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