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5949 Discussions

about xcvr_vccr_vcct_voltage set

lambert_yu
Beginner
364 Views

Hi all,

    I have one question:

     if the Vccr_GXB = 1.07v, so the xcvr_vccr_vcct_voltage is 1_0V or 1_1V? Which one will be the best setting? If I set xcvr_vccr_vcct_voltage to 1_0V is okay? For data rate = 12Gbps, will I need to set xcvr_vccr_vcct_voltage to 1_1V?

 

   FPGA TYPE : arria 10, 10ax115n2f45e1sg

 

Brs,

Lambert

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1 Solution
Deshi_Intel
Moderator
345 Views

Welcome.


So, if your on board power supply typical value is 1.03V and may fluctuate till max 1.06V/1.07v then maybe still fine but if your typical value is already 1.06v/1.07v then it's a bit high and out of recommended operation condition from Arria 10 datasheet.


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5 Replies
Deshi_Intel
Moderator
349 Views

HI Lambert,


FPGA TYPE : arria 10, 10ax115n2f45e1sg


Quartus setting of 0.9V, 1.0V and 1.1V basically correspond to on board supply of 0.95V, 1.03V and 1.12V.

  • 1.1V/1.12V setting is only applicable to GT channel only while I presume you are using GX channel


For GX channel, Transceiver speedgrade of 2, data rate = 12G,


In general, you can always refer to A10 datasheet doc for the guidance of correct transceiver power supply to be used.


Thanks.


Regards,

dlim



lambert_yu
Beginner
348 Views

Hi dlim,

 

    Thanks for your help,  just because I provide one  very close value to 1.06v(maximum, 1.07v just because of the power accuracy adjustment). And from your information, I got the indication of 0_9v, 1_0v, 1_1v, thanks.

 

 

Brs,

Lambert

Deshi_Intel
Moderator
346 Views

Welcome.


So, if your on board power supply typical value is 1.03V and may fluctuate till max 1.06V/1.07v then maybe still fine but if your typical value is already 1.06v/1.07v then it's a bit high and out of recommended operation condition from Arria 10 datasheet.


lambert_yu
Beginner
321 Views
Deshi_Intel
Moderator
315 Views

No problem !


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