TUSB2046B: pls help review schematic diagram designing and give same suggest ?

Hello Xiaofu,

Schematic feedback:

• Downstream port ground should be coupled to digital ground.
• The unused port should have pulldowns installed.
• The overcurrent reporting will not work since the hub will always see an overcurrent event when in the case where it is enumerated but the host has not sent the port power commands yet.
• More bulk capacitance may be needed on the downstream VBUS to prevent in-rush current droop.
• There should be pullups on all overcur lines.

Regards,

JMMN