3 Replies Latest reply on Sep 22, 2020 8:24 PM by JayakrishnaT_76

    FX3 recognized as SD3

    RoFl_4496141

      We just received our assemblies for our FX3-based board.

       

      However, my operating system (as well as the USB Control Center) recognizes it as an SD3 instead of an FX3. I checked the package's silkscreen and it reads:

       

      CYUSB3014-BZX

      C 1931

      A 33 THA

      CYP 629235

       

      Is it possible that I have an assembly problem?

      An old IC fab?

      A signal integrity design oversight?

       

      I'm not sure how to proceed troubleshooting this. Any help is appreciated.

        • 1. Re: FX3 recognized as SD3
          JayakrishnaT_76

          Hello,

           

          Please let me know the following details to debug the issue:

          1. Is the device enumerating as "Cypress SD3 USB Boot Device" when it is plugged into the host?

          2. Can you please share the part of schematics of the board showing the connection of PMODE pins of FX3?

           

          Best Regards,

          Jayakrishna

          • 2. Re: FX3 recognized as SD3
            RoFl_4496141

            Hi,

             

            Thanks for the pointers, I managed to track it down: it was indeed a PMODE problem.

            I'm posting details below in the hopes it helps someone else in the future.

             

            Is the device enumerating as "Cypress SD3 USB Boot Device" when it is plugged into the host?

             

            Yes, indeed that's the device shown. PID is shown as 0x0005 (image below).

             

            Can you please share the part of schematics of the board showing the connection of PMODE pins of FX3?

             

            Our board has the option to reconfigure PMODE and they wre all set to 'Z' (unconnected) by mistake. It didn't occur to me that it would enumerate as a different PID. Good to know.

             

            Of course, I'm also glad nothing's blatantly wrong with our design.

             

            Control center.png

            • 3. Re: FX3 recognized as SD3
              JayakrishnaT_76

              Hello,

               

              Glad to hear that the issue is resolved!

               

              Best Regards,

              Jayakrishna