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Trying to make usb-hub

Discussion in 'Sensors and Actuators' started by desasteur, Feb 6, 2021.

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  1. desasteur

    desasteur

    3
    0
    Feb 6, 2021
    Hey everybody, I'm trying to learn IC and I'm not really good...
    But I just made usb-hub (with led) that is connected to a laptop by usb c, and I wanted to know what I did wrong.
    Thanks !
     

    Attached Files:

  2. Harald Kapp

    Harald Kapp Moderator Moderator

    11,442
    2,628
    Nov 17, 2011
    What are the problems you have? More detail, please.
     
  3. desasteur

    desasteur

    3
    0
    Feb 6, 2021
    Of course, it's my first circuit and and I'm not sure it work well, I would like to know if I made something wrong, like badly use a pin of the gl850g, or no protection against current, bad optimisation of data transfer,...
    It's to print a good, working pcb and learn of my mistakes
     
  4. bertus

    bertus Moderator

    1,761
    677
    Nov 8, 2019
    Hello,

    I have made some remarks on your schematic, that are not clear:
    Schematic_usbc_2021-02-06_23-31-57.png

    I found the V33, it is COMING from the GL850 pin 24.
    The label shows an incoming signal at the GL850.
    Please correct ALL labels to have a correct schematic.

    Bertus
     

    Attached Files:

  5. bertus

    bertus Moderator

    1,761
    677
    Nov 8, 2019
    Hello,

    The GL850G has input , output and bi-directional signals.
    GL850G_ssop_pins.png
    GL850G_pin_list.png
    GL850G_pin_notes.png

    Bertus
     
  6. desasteur

    desasteur

    3
    0
    Feb 6, 2021
    Hello, thank you very much for helping me, I tried to make a circuit as simplest as possible, so I removed reset pin (I didn't fund it was necessary in datasheet) and I used clear labels, do you think it's better like that ?
     

    Attached Files:

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