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TMS570LC4357: Maximum SPI baud rate inquiry

Amr Mohamed
Intellectual 480 points
Part Number: TMS570LC4357

What is MibSPI maximum baud rate for the TMS570LC4357?

Is  TMS570LC4357 MibSPI module has maximum baud rate in master mode different from maximum baud rate in slave mode?

  • 0
    TI__Mastermind 21425 points

    Hello,

    The minimum cycle time in both Master ( tc(SPC)M ) and Slave ( tc(SPC)S ) mode is 40 ns which means Maximum SPICLK of 2MHz

    When the SPI is in Master mode, the following must be true:
    For PS values from 1 to 255: tc(SPC)M ≥ (PS +1)tc(VCLK) ≥ 40ns, where PS is the prescale value set in the SPIFMTx.[15:8] register bits.
    For PS values of 0: tc(SPC)M = 2tc(VCLK) ≥ 40ns.

    When the SPI is in Slave mode, the following must be true:
    For PS values from 1 to 255: tc(SPC)S ≥ (PS +1)tc(VCLK) ≥ 40ns, where PS is the prescale value set in the SPIFMTx.[15:8] register bits.
    For PS values of 0: tc(SPC)S = 2tc(VCLK) ≥ 40ns.

    Al this is stated in Datasheet, Section 7.12.