2 Replies Latest reply on Jul 3, 2018 3:30 AM by srdr

    CX3 CSI2 I/O interface ESD protection

    decai.wang_2529456
    decai.wang_2529456 Jun 27, 2018 9:13 PM

      Dear Sir,

       

      Can Cypress give some suggestion on how to design ESD and EMI for CSI2 I/O interface? I found EMI4183 used in e-consystem CX3 RDK schematics?

       

      Is it really needed?

       

      I also want to get ESD parameters for CX3 general GPIO,e.g. from GPIO17..to .GPIO57, that is not mentioned in FX3 or CX3 datasheet.

       

      Thanks.

       

      David

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        • 1. Re: CX3 CSI2 I/O interface ESD protection
          decai.wang_2529456
          decai.wang_2529456 Jun 28, 2018 12:37 AM (in response to decai.wang_2529456)

          Dear Sir,

           

          In e-consystem CX3RDK schematics, an RCLAMP0524J.TCT esd chip for USB3.0 lines, I think it is also can used for mipi csi port, emi4183 is similar with RCLAMP0524J.TCT, but with common choke embedded

           

          Can RCLAMP0524J.TCT replace emi4183 for mipi csi port?

           

          Thanks.

           

          David.

          • 2. Re: CX3 CSI2 I/O interface ESD protection
            srdr
            srdr Jul 3, 2018 3:30 AM (in response to decai.wang_2529456)

            In e-con System CX3 RDK, we have to connect the image sensor through a header board. i.e. Base board and sensor board are different here. This is the reason the ESD device is placed on MIPI lines in the CX3 RDK.

             

            If your image sensor and CX3 are on the same board and not exposed to the human intervention, you do not need to put ESD device over the MIPI CSI2 interface.

            If your application environment is highly charged environment and there is possibility for ESD, use EMI4183 or RCLAMP0524J.

             

            The same is applied to the GPIO pins too.

            Generally, we do not use any ESD protection for GPIO pins.