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USB type-C signal interface circuit

  • US 10,338,656 B1
  • Filed: 06/05/2018
  • Issued: 07/02/2019
  • Est. Priority Date: 04/11/2018
  • Status: Active Grant
First Claim
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1. A device comprising a USB-C controller instantiated as a first integrated circuit, the USB-C controller comprising:

  • a first set of terminals to be coupled to host controllers;

    a second set of terminals to be coupled to sets of D+/D−

    terminals of a type-C receptacle;

    a D+/D−

    multiplexer to selectively couple the first set of terminals to the second set of terminals;

    an electrostatic discharge (ESD) protection circuit coupled between the D+/D−

    multiplexer and the second set of terminals; and

    a charger detector circuit coupled between a positive data system terminal and a negative data system terminal of the first set of terminals, the charger detector circuit to detect whether the second set of terminals is coupled to a USB charger through the type-C receptacle.

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