• State Resolved
  • Replies 1 reply
  • Subscribers 42 subscribers
  • Views 85 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

CC3351: What is the DMA used for?

Island Wei
Prodigy 690 points
Part Number: CC3351

Tool/software:

Hi team,

We see there is an DMA module in CC3351 but no description for it in datasheet and TRM doc.

My question is what is it for? Whether it can be used for SDIO/SPI/UART and will some conflicts?

  • +1
    Intellectual 350 points

    Hi Island,

    This is a dedicated DMA, It is used on MAC of BLE & WiFi Core. 

    Island Wei said:
    My question is what is it for? Whether it can be used for SDIO/SPI/UART and will some conflicts?

    There is no universal DMA on the CC33XX for peripherals like SDIO/SPI. The CC33XX is a Companion IC usually used as a Device, and most of the data processing is on the Host side. SDIO/SPI as Host interface,DMA has limited effectiveness in this context. It is not necessary from a digital design point of view, and will increase the chip cost (more die area).

    Regards,

    Kevin