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c6678 QDMA bus width and frequency

hello: I want to know the QDMA bus width and frequency , Is anyone know it ? And I want to know if the QDMA and EDMA are the same bandwidth when they access the sane memory ,for example, DDR, MSMS RAM, LL2? Thank very much!

  • The QDMA uses the EDMA, it's just a quick way to setup and trigger and EDMA transfer.  The speed and width will depend upon which Channel Controller is used.  Please refer to the Data Manual for the details regarding the width and frequency of the Channel Controllers.  Note there are 8 QDMA's channels per EDMA Channel Controller.

    Best Regards,

    Chad