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DS90UB954-Q1EVM: DS90UB954 connecting to DS90UB913

Cindy Chang
Intellectual 2475 points
Part Number: DS90UB954-Q1EVM
Other Parts Discussed in Thread: DS90UB913A-Q1

Hi,

We want to use DS90UB954 EVM to connect to DS90UB913 Camera.

Because it seems that DS90UB954 could only connect to DS90UB953/951, when we directly attached to DS90UB913, I2C could not recognize it. (whether RX0 or RX1)

Could you help to advise which DS90UB954 register settings could be modified to recognize DS90UB913? 

Is there any other settings do we need to make the connection build up?

Thank you.

Best Regards,

CIndy

  • 0
    TI__Expert 6345 points

    Hello Cindy,

    Does the 913 have PoC? 

    Can you please share the register dump of the 954? (and if possible, also the 913?)

    What mode are you strapped to on the 954 EVM? Do you have lock? Did you enable read and write of the RX port that you are using?

    Please share the values of these registers in the 954: 0x04, 0x0C, 0x4C, 0x4D, 0x4E, 0x5B, and 0x6D. 

    Best Regards,

    Shruti

  • 0 in reply to Shruti More
    TI__Intellectual 2475 points

    Hi Shruti,

    Thanks for your reply.

    After changing the setting of 0x58 and 0x6D, 913 could be recognized.

    Customer has 2 following questions about this:
    1. When the sensor is 2 byte address and 2 byte data, does "I2C pass through all" need to be turned on so that each command could be processed?

    2. How to set MIPI timing if the image is 1280*720 30fps raw12?

    Thank you.

    Best Regards,

    Cindy

  • 0 in reply to Cindy Chang
    TI__Expert 6345 points

    Hello Cindy,

    1. Not necessary, I2C PASS_THROUGH_ALL is a less common use case and primarily used for debugging I2C
    messaging as they will respectively pass all addresses regardless of valid I2C address. 

    2. The 954 will be in the RAW Mode (DS90UB913A-Q1 compatible) Please refer to sections "10.4 Device Functional Modes" in the 913 datasheet and sections "7.4 Device Functional Mode" and "7.4.2 RAW Mode" in the 954 datasheet. Your PCLK can be in the 10-100 Mhz range. "In the 12-bit high-frequency mode, the pixel clock frequency divided by the external oscillator frequency must be 1.5."

    Best Regards,

    Shruti