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    • Fig 1
    1. Technologies
    2. Communications

    Blending USB Type-C with MHL

    April 1, 2016
    Lattice Semiconductor and MediaTek have partnered to simplify MHL over Type-C USB connections.

    Lattice Semiconductor and MediaTek have partnered to simplify MHL over Type-C USB connections. This will allow delivery of 4K UHD video using MHL running on one of the Type-C alternate modes. The alternate modes allow a cable to handle other interfaces like DisplayPort in addition to USB 3.0.

    The reference design (see figure) is based around MediaTek’s 10-core Helio x20. The Helio x20 drives the Sil8348 superMHL transmitter and the Sil7033 USB Type-C interface. The Sil8348 supports the superMHL Tx, MHL 3.0, MHL 2.0, and MHL 1.0 specifications. Both are designed for low power applications. The Helio x20 includes support for VESA display screen compression (DSC).

    The Lattice chips can be used for other functions, such as an HDMI bridge inside a dongle with USB Type-C and HMDI connections, a USB Type-C dock, and a USB Type-C MHL cable.

    The reference design is applicable to scenarios such as a “dumb laptop,” where a smartphone plugs into a keyboard/display combination driving the display, providing the computational, storage, and communication resources.

    Looking for parts? Go to SourceESB.

    About the Author

    William G. Wong | Senior Content Director - Electronic Design and Microwaves & RF

    I am Editor of Electronic Design focusing on embedded, software, and systems. As Senior Content Director, I also manage Microwaves & RF and I work with a great team of editors to provide engineers, programmers, developers and technical managers with interesting and useful articles and videos on a regular basis. Check out our free newsletters to see the latest content.

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    I earned a Bachelor of Electrical Engineering at the Georgia Institute of Technology and a Masters in Computer Science from Rutgers University. I still do a bit of programming using everything from C and C++ to Rust and Ada/SPARK. I do a bit of PHP programming for Drupal websites. I have posted a few Drupal modules.  

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