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Original question:

Linux/DS90UR910-Q1: LOCK and PASS pins status details

DS90UR910-Q1: No signal output when paired with UB927

Wei Xiao
Intellectual 625 points

Part Number: DS90UR910-Q1

We have a proven working well (with UR905) board with UR910 on it. However, when we use it to pair with UB927 which was put in backward compatibility mode, we cannot get any MIPI output from UR910(measured with a good Oscilloscope), while the LOCK and PASS pins both are stably high. The board with UB927 is also proven good, for, if we use board with UR906, the output is normal. Would someone please shed some light on how to fix the issue? Much appreciated.

  • 0
    TI__Mastermind 30410 points

    Hi Wei,

    How are you enabling the backward compatibility mode? Is it set HIGH with 10kOhm pullup resistor? 

    Did you also test the the UR910 with a different SER previously to confirm it is working as expected?

    Best regards,
    Ikram