4 Replies Latest reply on Jan 15, 2020 10:34 PM by HeCh_4601451

    CX3 RDK schematics relayout function check

    HeCh_4601451

      Hi Sir

      I re-layout the e-CON_DENEBOLA_CX3_RDK_Schematics, modify MIPI CAMERA BRD CONNECTOR to Meet customer needs.

      and can load e-con_CX3RDK_OV5640_Firmware_Package SDK_1.3.3 version to CX3 board (can download .img file to I2C EEPROM or SPI Flash.

      (We don't have sensor board and Denebola – USB 3.0 UVC Reference Design Kit (RDK))

       

      1. How to measure (or judge) whether MIPI CSI-2 signal is normal?

      (At present, both MIPI_CAM_PWDN and MIPI_CAM_RST are in the L state)

       

      2. About MIPI_CAM_PWDN and MIPI_CAM_RST are H or L under normal work in the SDK F/W version? At present, the two signals measured are L, can I change it to H?

        • 1. Re: CX3 RDK schematics relayout function check
          YashwantK_46

          Hello,

           

          1.) Without the transmitter (Image Sensor), you can't really validate the timing parameters correctly as there is no source to drive the MIPI_CAM_PWDM and MIPI_CAM_RST lines.

          Since there is no source, the lines will be in L state until they are driven by a source.

          The following timing diagram is to be followed to comply with the MIPI spec:

          2.) Also, you can't change the states from L to H as these will make the receiver to understand the line values in the opposite way.

          It's not recommended to do such a thing and would be better if you could follow the timing diagram as shown above.

           

          Regards,
          Yashwant

          • 2. Re: CX3 RDK schematics relayout function check
            HeCh_4601451

            Hi Sir

                   the MIPI_CAM_PWDM and MIPI_CAM_RST lines source not only from CX3 controller but also from the sensor?

                  Assuming I can get the customer sensor board, where do I mainly modify the F/W? Or just use tools to modify the parameters?.

             

            • 3. Re: CX3 RDK schematics relayout function check
              YashwantK_46

              Hello,

               

              Can you please elaborate as to what you exactly want to achieve?

               

              I am still not able to get a clear view of the what you exactly want.

              Please tell me your exact application so that i can assist you better.

               

              Regards,
              Yashwant

              • 4. Re: CX3 RDK schematics relayout function check
                HeCh_4601451

                Hi Sir

                    Thanks

                 

                Originally we only needed to provide the main board to the customer.

                Customer is responsible for F/W design

                "main board is that re-layout the e-CON_DENEBOLA_CX3_RDK_Schematics, modify MIPI CAMERA BRD CONNECTOR to Meet customer needs."

                 

                But now customer required me to get image through sensor

                I don't have an F/W engineer

                I want to find out what can be verified.