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SPI in 3-Wire mode in AM3517

ratheesh reddy46123
Prodigy 60 points
Other Parts Discussed in Thread: AM3517

Hi All,

        We are working on a project that has a chip which supports only SPI 3-Wire mode (CS, MOSI and CLK pins of AM3517 connected to CS, DIO and CLK pins of chip respectively).

Is it possible to receive the send and receive the data over MOSI with the pin configured as input in the MCSPI_SYST?

Regards

Ratheesh

  • 0
    TI__Mastermind 28035 points

    Ratheesh

    I think that this should be possible since the data pin driver is turned off when not transmitting. you will need to deselect the output transmission before receiving any data from the salve. The input buffer will have the word or words you transmitted followed by any words received from the slave device.

    I have not tried this.

      Paul