3 Replies Latest reply on Jan 19, 2020 6:11 PM by HirotakaT_91

    About the 5V charging for CMG1-E Marker

    NoAr_1540581

      Hello

       

      About CMG1 E-Marker

      In the case of 5A charging, it is understood that SOP prime or SOP double prime packet is sent and confirmed after detecting Rp/Rd.

      Q1-1)Is the content of the packet to be transmitted specified by the PD standard with a fixed value?
      Q1-2)Or is it unique in combination with the terminal (charging side)?

      (Q2)

      They understand that E-Marker is not required on the adapter side when the adapter is a cable integrated type, even if it supports 5A.
      On the terminal side (charged side), it is understood that there is no need to additionally install an E-Marker (special IC) even for 5A charging. Is this correct?

      ※ The terminal can respond by simply changing the FW for PD communication to transmit SOP prime or SOP double prime packets.

       

      Best Regards

      Arai

        • 1. Re: About the 5V charging for CMG1-E Marker
          HirotakaT_91

          A1) Since Discover Identity is issued to SOP_PRIME, Discover Identity Responder ACK contains obviously different Data Obj.

           

          A2) E-marking on Type-C Cables - KBA98430

          For passive cable assembly, having E-marker IC at one end of the cable would be enough.

          What does "the adapter is a cable integrated type" mean? Is it captive cable? Captive cable should be implemented E-marker if it supports more than 3A.

           

          Best regards,

          Hirotaka Takayama

          • 2. Re: About the 5V charging for CMG1-E Marker
            NoAr_1540581

            Q1に関しまして質問内容及び回答頂きました内容から下記の様に理解しております。

             

            Q1)E-Markerについて、追加ご教示ください。
            5A充電する場合には、Rp/Rd検出後にSOPプライムorSOPダブルプライムのパケットを送信して確認するとの理解ですが、送信するパケットの内容はPD規格で固定値で規定されていますでしょうか? それとも、端末(被充電側)との組合せで固有で設定するものなのでしょうか?

             

            上記に対して、回答としては PD規格で規定されているが、固定値ではない→理由として、Discover Identity Responder ACKに異なるデータオブジェクトが含まれる為。 という理解で正しいでしょうか?

             

            Best Regards

            Arai

            • 3. Re: About the 5V charging for CMG1-E Marker
              HirotakaT_91

              はい。そうです。