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Trying to make usb-hub

desasteur

Feb 6, 2021
3
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Feb 6, 2021
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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 !
 

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  • Schematic_usbc_2021-02-06_23-31-57.pdf
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desasteur

Feb 6, 2021
3
Joined
Feb 6, 2021
Messages
3
What are the problems you have? More detail, please.
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
 

bertus

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Nov 8, 2019
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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
 

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  • GL850G.pdf
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bertus

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Nov 8, 2019
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Hello,

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

Bertus
 

desasteur

Feb 6, 2021
3
Joined
Feb 6, 2021
Messages
3
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 ?
 

Attachments

  • Schematic_usb_c forum_2021-02-08_22-35-54.pdf
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