Detection circuit of universal serial bus
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United States of America Patent
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Feb 27, 2018
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N/A
app pub date -
Oct 19, 2015
filing date -
Jul 14, 2015
priority date (Note) -
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Abstract
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.
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