CPC H01R 13/6683 (2013.01) [G06F 13/4072 (2013.01); G06F 13/4282 (2013.01); H01R 13/6675 (2013.01); H01R 13/703 (2013.01); H01R 29/00 (2013.01); G06F 2213/0042 (2013.01); H01R 24/60 (2013.01); H01R 2107/00 (2013.01)] | 22 Claims |
1. A USB (Universal Serial Bus) host comprising:
a plurality of signal pins comprising a CC1 signal pin, a CC2 signal pin, and other pins,
wherein the USB host is configured to,
operate in a protection mode,
detect voltage levels of the plurality of signal pins,
detect a foreign substance when the voltage levels of at least two pins of the other pins are transitioned, and
operate in a normal mode when the foreign substance is not detected and the voltage level of the CC1 signal pin or the CC2 signal pin is transitioned.
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