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Can McBsp be configured as Uart?

Miao Qian
Intellectual 460 points

Dear sir/madam:

    I'm using TMS320F28062PNT, and this device has no FSR pin for McBsp . So I wonder whether this peripheral can be configured as UART.

   I'm looking forward to you reply ASAP.

   Thanks.

Qian.Miao

  • 0
    Guru 30330 points

    Miao,

    The following app note is an old one that refers to C6000 devices. It contains the configurations necessary to emulate a UART with McBSP. There are various other threads on the forums that have more information.

    http://www.ti.com/lit/an/spra633c/spra633c.pdf

    The App note describes 2 ways to go about doing this. Serial port mode could work if MDX, MDR, and MFSR are brought out to a pin. GPIO mode is not supported on C2000 devices, so this method would not be possible.

    The F2806x devices could support McBSP as UART if the device you are using has MDX, MDR, and MFSR pinned out. Unfortunately the F28062PNT, as you said, does not have the MFSR signal brought out to a pin.

    Is this device your only option? 

    -Mark

  • 0 in reply to Mark Labbato
    Intellectual 460 points

    Hi Mark,

         Thank you for reply. I have to select the devices with 100 pins because 3 UARTs are necessary for my design.

        Best regards,

    Qian.Miao

  • 0 in reply to Miao Qian
    Genius 3735 points

    Qian.Miao,

    In the past I have used ICs that perform UART functions with either a SPI or parallel interface, either of which would be easy to integrate with a C2000.

    The SPI device was a Maxim 31xx series device.  The parallel was a SC28L198, which had 8 UARTs on it.

    Regards,

    Bill