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about SPI of 2837xS

has
Prodigy 50 points

The SPI Module of the 2837xS has a default of 4 lines,
Is it compatible with 3 wires as an option, but does it correspond to 2 wires?
(SPIModule I want to use is SCLK, SDIO only)
If there is a solution please teach.

  • 0
    TI__Mastermind 32435 points

    Hello,

    There is a 3-wire mode available in SPI. In this mode, instead of separate SIMO and SOMI pins, there would be a single bi-directional pin. The way the transmit and receive happens would be different compared to the 4-wire mode. You can refer to the chapter "SPI 3-Wire Mode Description" in the TRM for more details.

    If the SPI available in the C2000 device is configured as slave, I believe it needs the STE (slave transmit enable), pin. If you are configuring the SPI as master and the slave does not require the STE pin, you need not use that pin. 

    Thanks and Regards,

    Veena