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ohfpga1's avatar
ohfpga1
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4 months ago

Timings eMMC

Hi,

latest datasheet of SoC « 813918/2026.01.05 » lists in paragraph « HPS SD/eMMC Timing Characteristics » the constraints of eMMC, applicable to memory component but does not define any timing data in input/output of SoC.

There is no Tco min/max of CMD/DATA at SoC output, as well as Tsetup/hold of CMD/DATA at SoC input.

Can you provide Tco and Tsetup/hold for eMMC usage (Legacy, HS_SDR, HS_DDR, HS200, HS400) ?

thanks

Hps Debug

7 Replies

  • KianHinT_altera's avatar
    KianHinT_altera
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    4 months ago

    Hi ohfpga1 

     

    Could you refer to the Agilex 5 datasheet under SD/EMMC timing characteristics (https://docs.altera.com/r/docs/813918/current/agilextm-5-fpgas-and-socs-device-data-sheet/agilextm-5-fpgas-and-socs-device-data-sheet)

     

     

    Example for legacy, HS_SDR

     

    There is also timing tables for the rest of the modes eg (HS,HS200, HS400). Could you refer to the document and see whether it addresses your timing question?

     

    Thanks

    Regards

    Kian

    • KianHinT_altera's avatar
      KianHinT_altera
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      4 months ago

      Hi ohfpga1 ,

      I've gotten a reply on our factory on the your question as I was asking them whether Tco & Tsetup/hold is it correspond to the Tisu, Tih,  Todly etc. They would like to understand further on your query on what spec are you looking for , it is something like on Figure 12/13?

       

       

      Thanks

      Regards

      Kian

       

      • KianHinT_altera's avatar
        KianHinT_altera
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        3 months ago

        Hi ohfpga1 ,

        Sorry for the delay, our factory team only provided the screenshots as per my previous comments as they only have these timing specs and mentioned that they would like to understand further on your query, what are the specs or data you're looking for.

         

        Thanks

        Regards

        Kian

  • KianHinT_altera's avatar
    KianHinT_altera
    Icon for Frequent Contributor rankFrequent Contributor
    4 months ago

    Apologies, didnt notice you mentioned you're already referring to the 813918, I'm checking with our factory team and let you know later.

     

    Thanks

    Regards

    Kian

  • ohfpga1's avatar
    ohfpga1
    Icon for New Contributor rankNew Contributor
    3 months ago

    Hi Kian, do you have any feedback from factory ?

    thanks

    • KianHinT_altera's avatar
      KianHinT_altera
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      1 month ago

      Dear Customer,

      As we did not hear back from you , i will set this case to close-pending . If any further questions please create a new thread

      Best regards,
      Altera Technical Support