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TUSB8044: USB 2.0 HUB schematic check

Edgar Lin2
Prodigy 190 points
Part Number: TUSB8044
Other Parts Discussed in Thread: TUSB8042A

Hi

I am planning to use TUSB8044 for our USB hub product.

Please help to check schmetic if ok or not.

TUSB8044 USB2.0 hub.pdf

Thanks,

Edgar

  • 0
    TI__Guru 60865 points

    HI Edgar,

    Schematic feedback:

    • A USB 3.0 capable hub and connectors were used, but only USB 2.0 was connected.  It that expected?
    • If the application does not require Billboard or a HID interface, I would recommend TUSB4041 or TUSB8042A.
    • The TEST pin should be pulled low.
    • Installing pullups on PWRCTL outputs will enable battery charging which can use over 1.5A per port.  External pullups on these pins are not required for normal operation.
    • No USB port appears connected to the Type-C port in the schematic.
    • USB_VBUS should only be high when a powered, active host is connected to the hub.  It should not be pulled permanently high.

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 190 points

    Hi JMMN

    Thasks for  your review.

    Edgar