Compensation for DC loss in USB 2.0 high speed applications

摘要

In at least one example, the current source (232) is coupled to the channel input of the switch (234) and the output of the switch (234) is a positive data line (140) or negative in the USB 2.0 communication system (200). It is connected to the data line (150) of. Also, the first input of the voltage threshold comparator (201) is coupled to the negative data line (150) and the second input of the voltage threshold comparator (201) is coupled to the positive data line (140). The output of the voltage threshold comparator (201) is coupled to the control input of the switch (234).