The datasheet states that pullups resistors are required, and the evaluation kit indicates selectable resistors for 2k2, 1k or FLOATING, but on the USB transceiver side, while the UCD part has actual no series or pullup resistors on that sheet.
The documentation references PMbus and/or SMbus, but in between all those specifications and TI information, the pullup resistors could be as low as 680 ohm. I would expect that a minimum that 4k7 resistors would have been specified. What is the actual requirement here on the value of pullup required?
