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AM5706: SPI Max Trace Length

Athuljith R
Intellectual 611 points

Part Number: AM5706

Hi, I am using AM5706 processor in my project. I am planning to use 3 SPI McSPI cores at 40MHz. I want to to how much is the maximum trace length is possible for SPI lines on PCB.

Regards,

Athuljith

  • 0
    TI__Guru 55005 points

    I'm not aware of any maximum trace length specification for SPI interface.  With long PCB traces, transmission line affects can become very critical.  Recommended referencing High Speed Guidelines application note (https://www.ti.com/lit/pdf/spraar7) for information on how to properly design the PCB for minimizing those affects. May also good to include series termination resistors (or similar) to adjust if needed during testing.