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AM3354: AM3354

jian wang87
Intellectual 370 points
Part Number: AM3354

Hi

I want to know if USB0_DP/DM can be powered ahead of the power supply of AM3354. i have two chips communicated using USB, but the power of these two chips is from different power rail.

any risk for this connection?

thanks in advance! 

  • 0
    TI__Mastermind 27055 points

    Only USB0_VBUS and USB1_VBUS are fail-safe IO. The DP/DM signals are not and should not be driven before the AM335 has been powered.

    See the Section 5.1 in the datasheet which identifies the fail-safe pins. 

    --Paul