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DS90UB941AS-Q1: The DS90UB941 output is faulty

Honle Zhao
Intellectual 630 points
Part Number: DS90UB941AS-Q1

Dears
Pls help check the 941 chips questions,Is the chip damaged or other reasons?
1,dump941 Register data 0x0C=0x25 An input error on CSI is detected
2,pin 26,pin27 Voltage anomaly, Normal voltage pin26 0.54V,pin27 0.5V, Actual voltage pin26 0.004V,pin27 1.095V
3,MIPI clock and data cable are normal
4,PIN49 has a 290HZ abnormal pulse

  • 0
    TI__Guru** 103215 points

    Hello Zhao,

    This information is very minimal to help debug your issue. Can you please give background on your application such as:

    What deserializer are you connecting with?

    What type of FPD-Link cable are you using?

    What is the format/frequency of your DSI input to the 941AS?

    What initialization script are you using for the 941AS?

    Can you provide schematics for your design?

    Is this issue seen on one device out of multiple tested?

    Is this something that is occurring all the time on this unit or just occasionally?

    Have you tried exchanging the cable between the serializer and deserializer?

    Best Regards,

    Casey