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TDA3MV: Full-duplex for SPI1 SPI2 and SPI3

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Replies: 3

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Part Number: TDA3MV

Hi,

I have indications that full-duplex SPI communication is only available for SPI1 on the TDA3. Since we would like to use UART3 for bootstrap and  this collides with the SPI1 i wonder if this is true. If this is true where in the spruie7d can I find that info?

Thanks in advance

Jean

  • Hello,


    I neither find such restriction in TRM, nor in DataManual and Silicor Errata. I also looked in the PinMux tool and the full-duplex use case is available for all SPIs. Where did you get such indications that SPI2/3/4 can't do full-duplex? 

    thanks,

    Alex

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  • Jean,

    Additionally to Alex's reply:

    If you will be using UART3 only for bootstrap, it doesn't mean SPI1 will stay blocked also after boot. I can see only issue with CS0, which is sharing UART3 TX, however CS1, and also (less convenient though) CS2 and CS3 are available for SPI1.

    Regards,

    Stan

  • In reply to Alex Bashkov:

    HI,

    Thanks for your information! I think someone at our side has misinterpreted the pinmux tool in that case. I will try to get more information how this assumption was made.

    Thanks again.

    Jean

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