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TUSB1002: TUSB1002 / 5m cable transmission

Part Number: TUSB1002

Hi,

Like previous users here I am trying to use a TUSB1002 to connect a PC to a USB3 camera.

Setup is as follows: PC-->redriver cable is 3m SS USB3, and redriver-->Camera cable is 25cm Type A/Mini-B.

AC-coupling capacitors on Tx lines only.

My current settings are:

- CH1_EQ (receive from camera, transmit to PC via 3m cable) - 7.1 dB @ 5GHz

- CH2_EQ (receive from PC via 3m cable, transmit to camera) - 11.1 dB @ 5GHz

- CFG - Setting #16 (1200mV, CH1 GAIN=+1dB, CH2 GAIN=0dB)

What is the recommendation for the EQ and CFG settings? I failed to understand from TI's literature the link between a standard USB3 cable's length and a "rule of thumb" setting.

I configured the EQ and CFG according to my minor understanding, but USB3 fails with all the cables I tested and camera keeps shifting to USB 2.

Thanks!