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TUSB8044A: How signal transmission happens bet upstream port and downstream port.

Part Number: TUSB8044A

Hi team 

Does  HUB recover the signal from the upstream port and then retransmit it to the downstream port or vice versa. If so it means losses of downstream port need not to be considered for path bet upstream port to the processor. So that I can consider length mismatch, via count the max length of the downstream port separately from the upstream port.