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Reference circuit diagram for multi slave SPI connection on AM1808

SANGILI KUMAR
Genius 3920 points
Other Parts Discussed in Thread: AM1808

Hi

I'm using AM1808 and i need to connect 2 number of SPI slaves on SPI0 bus how to connect the two slaves with SPI0 and AM1808 support which kind of connection?

Kindly provide the sample schematic diagram for single master multi slaves SPI connection in AM1808 processor.

  • 0
    TI__Expert 4760 points

    Hi Sangali Kumar,

    There is an optional SPIx_SCS (Slave Chip Select) pin available in the AM1808 device which is most useful to enable in slave mode when there are other slave devices on the same SPI port. The device will only shift data and drive the SPIx_SOMI pin when SPIx_SCS is held low.

    Please refer the Illustration of SPI Master-to-SPI Slave Connection diagram in page no 153 (sprs653d) datasheet

    Example:

    Connect SPI0_SCS0 to one slave device and connect other slave device to SPIO_SCS1.

    SPIx_CLK , SPIx_SOMI, SPIx_SIMO connection are common to both the slave device

    Regards

    Antony

     

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