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Original question:

DS90UB953-Q1: DS90UB953-Q1: Transmission error between ub953 and ub954

DS90UB953-Q1: When using 953 and 954 to transmit 4K low frame rate images, sometimes purple stripes appear

kui cai
Prodigy 100 points
Part Number: DS90UB953-Q1

Hello, TI engineer.

        I use 953, 954, Raspberry Pi and imx477 to build my system. Now it can achieve 60 frames of 200M pixels transmission. But I use it to transmit 10 frames of 8 million pixel images, the image will also come out, but the image will sometimes appear purple bars, can you help me analyze the reasons for this purple bar? The total amount of data transmitted has not increased, and the output of 4K images is also normal when the Raspberry Pi is directly connected to the imx477.

    

      This phenomenon has troubled me for a long time. Can you analyze it for me? 

  • 0
    TI__Guru** 103215 points

    Hello Kui,

    Thanks for placing your request in E2E - we will look into it for you can respond back ASAP. Since Monday is a US holiday, please expect a response by Tuesday next week 

    Best Regards,

    Casey 

  • 0
    TI__Expert 6345 points

    Hello Kui,

    Can you please check for errors and provide us with data/values in the following registers:

    1. RX_PORT_STS1 (0x4D)

    2. RX_PORT_STS2 (0x4E)

    3. RX_FRE_HIGH (0x4F)

    4. RX_FRE_LOW (0x50)

    5. SENSOR_STS_0 (0x51)

    6. SENSOR_STS_3 (0x54)

    7. RX_PAR_ERR_HI (0x55)

    8. RX_PAR_ERR_LO (0x56)

    9. BIST_ERR_COUNT (0x57)

    10. LINE_COUNT_HI (0x73)

    11. LINE_COUNT_LO (0x74)

    12. CSI_RX_STS (0x7A)

    13. CSI_ERR_COUNTER (0x7B)

    If you provide a register dump from the DS90UB954, it will be more helpful in figuring out the issue. 

    Thank you,

    Best Regards,

    Shruti More