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AM2634-Q1: Can I use GPIO pin simulate CS (chip select) in McSPI?

Gibbs Shih
Expert 6560 points

Part Number: AM2634-Q1

Hi, Expert.

As title description, 

Can we let MCSPI works in 3 PIN mode, and use a gpio for CS simulation?

Besides CS pin, what's difference between 3 PIN & 4 PIN MCSPI mode?

Thanks

Gibbs

  • +1
    TI__Guru 57745 points

    Hi Gibbs,

    You are correct. If you want to use the GPIO for manual CS enable, then you should use the 3-pin mode. The difference between 3-pin mode and 4-pin mode is whether the SPI drive will handle the CS enable automatically or not.

    Best regards,

    Ming