This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB933-Q1: Ds90ub933/934 transmission of 99MHZ clock frequency problem, urgent

Part Number: DS90UB933-Q1
Other Parts Discussed in Thread: DS90UB934-Q1EVM

Hi Teams

When we used DS90UB933 to design a camera module, we used SONY's IMX019 for the sensor.we use TI DS90UB934-Q1EVM to test the camera module. The registers of 933 and 934 are the initial configuration, without any changes. Currently, we have encountered the following problems.

1) when the sensor IMX019 is output 74MHZ @ 10bit, 933 and 934 can normally transmit and display images.And the output clock frequency of 934 doubled to 148Mhz. Is that right?

2) when the image sensor outputs 99Mhz @10bit, 933 and 934 cannot be transmitted normally, and the output image of 934 is discontinuous and incomplete, How we solve the issue? Sony's technical support team indicated that other customers used 933/934 to transmit 99Mhz normally.Do we need to configure some registers here?Which registers are critical?Our product design need 99Mhz frequency.

3) we have used 913/914,933/934 to design many products, but none of their  register is configured, we are still developing 953/954. Is there any detailed configuration instructions for the register configuration, such as the sequence, configuration method in different modes and so on? This will help us a lot in developing our products. Maxin provided detailed instructions on this aspect in the earlier stage for the similar product.

  •  Agile, pls see below comments. thanks.

    1) when the sensor IMX019 is output 74MHZ @ 10bit, 933 and 934 can normally transmit and display images.And the output clock frequency of 934 doubled to 148Mhz. Is that right?

    TI: NOT correct. the UB934's PCLK pin should have same clock freq. as UB933's PCLK pin input. pls check the UB933's PCLK pin clock freq.

    2) when the image sensor outputs 99Mhz @10bit, 933 and 934 cannot be transmitted normally, and the output image of 934 is discontinuous and incomplete, How we solve the issue? Sony's technical support team indicated that other customers used 933/934 to transmit 99Mhz normally.Do we need to configure some registers here?Which registers are critical?Our product design need 99Mhz frequency.

    TI: firstly, pls make sure the UB933 and UB934 work at RAW 10bits mode, please check the mode_sel setting of UB934.then pls check UB934's LOCK status. yes, Sony internally has refer design between UB933 and ISX019, and have worked well. No special reg. setting is required.

    3) we have used 913/914,933/934 to design many products, but none of their  register is configured, we are still developing 953/954. Is there any detailed configuration instructions for the register configuration, such as the sequence, configuration method in different modes and so on? This will help us a lot in developing our products. Maxin provided detailed instructions on this aspect in the earlier stage for the similar product.

    TI: pls refer to www.ti.com/fpd-link, TI has provided wide technical papers on FPD-Link. regarding the UB953/UB954, you can also get the points from www.ti.com/training on online video training, it has one how to bring up UB953/UB954 documents. if any not clear, pls let's know.

    regards,

    Steven

  • Hi Steven

        Would you plsease help to check the schematic as below ? Is there anything that need to optimize ?

    SCH-C236C-03原理图.pdf

    SCH-C241A-01原理图.pdf

  • thank you for the message.
    pls follow up TI's refer design in the link "www.ti.com/.../tools-software.html", you should be careful of the designs:
    a. PoC network design, and component selection
    b. power supply filter, it is recommended to have 10uf and 0.1uf and 0.01uf, FB is recommended in the I/O supply pins.
    c. control signals setting, it is dependent on your system design. d/s has detailed description on how to select the correct mode for different control signals.


    Best regards,
    Steven