What is the acceptable externally supplied DC bias on the SSRX inputs? I have two receivers on the SSRX diff pair (TUSB1310A and a redriver) and the TUSB1310A has trouble receiving any data. The redriver passes through the data correctly. The redriver receiver puts a 0.9V DC bias on the SE signals. Sometimes the TUSB1310A can see the SS data and sometimes it doesn't. I'm suspecting it has trouble because of the DC bias.
More info: Since the SS USB is AC-coupled, it swings around the 0V - level and so must be DC biased by each receiver. The SS USB 3.0 spec does not specify what the DC bias should be. Each receiver can choose its own DC bias. Since I'm having two receiver on each SS RX diff pair, different DC biases could perhaps cause trouble.
Would TIs redrivers have the same DC bias voltages as the TUSB1310A?
Thanks
