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DS90UB925Q-Q1: DS90UB925 + DS90UB926 communication problem

Annie Liu
Genius 10295 points
Part Number: DS90UB925Q-Q1

Hi Team,

Problem description: The scheme source is DS90UB925 and the terminal is DS90UB926, at present the RGB signal inside the source DS90UB925 can be displayed normally at the terminal. But after the signal from the source MCU is sent out, the terminal gives no response and ails to display. The scheme is designed with TI reference, and measured PCLK waveform and MODE-SEL voltage of DS90UB925 are normal.

What is the reason and how to deal with it?

Thanks.

  • 0
    TI__Mastermind 30515 points
    sorry we don't understand your issue well dependent on above description.
    where is the MCU? the 926/925 is one pair serdes, the input in 925 parallel side is mapped to 926's parallel side. if any issue, please check 926's lock status firstly, you need debug this issue step by step.

    regards,
    Steven