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AM3352: USB eye diagram adjustable by register configuration?

Tony Tang
Mastermind 27542 points
Part Number: AM3352

USB eye diagram is not good on customer board.

Can USB  eye diagram adjustable by register configuration? such as USB PHY regs.

  • 0
    TI__Mastermind 27890 points

    Hello,

    No, AM335x is trimmed at final test to ensure that each part meets the requirements set forth in the USB2.0 specification.

    This looks like a jitter/noise issue and not something that part adjustment would resolve. Please ensure that the source PLL is configured optimally and also a review of the SPRAAR7 white paper may reveal schematic or layout deficiencies.