DETECTION CIRCUIT OF UNIVERSAL SERIAL BUS

摘要

A detection circuit of Universal Serial Bus (USB) is provided. A port of the USB has a first configuration channel pin and a second configuration channel pin, and the first and second configuration channel pins are disposed on opposite sides. The detection circuit includes a switch unit and a detection unit. The switch unit is coupled to the first and second configuration channel pins to sequentially provide a first voltage level of the first configuration channel pin and a second voltage level of the second configuration channel pin. The detection unit is coupled to the switch unit and correspondingly provides a state reference signal according to the first and second voltage levels.

主权项

1. A detection circuit of universal serial bus, a port of the universal serial bus having a first configuration channel pin and a second configuration channel pin, the first configuration channel pin and the second configuration channel pin being disposed on opposite sides, and the detection circuit comprising:
a switch unit, coupled to the first configuration channel pin and the second configuration channel pin to sequentially provide a first voltage level of the first configuration channel pin and a second voltage level of the second configuration channel pin; and a detection unit, coupled to the switch unit and correspondingly providing a state reference signal according to the first voltage level and the second voltage level.