Other Parts Discussed in Thread: TUSB542, HD3SS3212, TUSB564, TUSB546
I found a USB-IF rated Passive USB-C cable from a Tablet to a certain "product" results in that Tablet enumerating to USB2.
But that Tablet enumerates USB3 when connected to a PC with the same cable.
Also, when a different Tablet is connected to this "product" with the same USB-IF rated Passive USB-C cable, that Tablet enumerates USB3 fine.
The USB-IF cable is 0.5m, and another cable is 0.2m. Both were tested with same result.
But I found when an Active cable was used, that Tablet which enumerated as USB2 with the USB-IF rated Passive cable, now enumerates as USB3.
I am led to believe the Tablet output signal quality is questionable, and adding the redriver in the active cable helped solve the issue.
The solution seems to be to add a redriver to the "product".
But the TUSB542 can't be used (0.4mm pin pitch) - this leaves a MUX (HD3SS3212) and a separate redriver (TUSB522P).
The question is this: to reduce the size and cost, can the TUSB522P be effective if placed not between the USB-C receptacle and MUX, but between the MUX and USB HUB/PHY/etc?
Does the TUSB522P need to be placed at the connector to be effective?