Power sourcing equipment, and method and apparatus for power over ethernet

  • US 11,025,443 B2
  • Filed: 03/31/2020
  • Issued: 06/01/2021
  • Est. Priority Date: 10/13/2016
  • Status: Active Grant
First Claim
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1. A power sourcing equipment (PSE), comprising:

  • a PSE chip;

    a master control processor coupled to the PSE chip;

    a power supplying port coupled to the PSE chip; and

    a preprocessor coupled to the master control processor and the PSE chip, wherein without waiting for starting a main program by the master control processor, the preprocessor is configured to;

    determine whether the master control processor starts upon power-on;

    control the PSE chip to detect whether the power supplying port is connected to a valid powered device (PD) when the master control processor starts upon power-on; and

    control, according to a preset rule, the PSE chip to power on the valid PD when the power supplying port is connected to the valid PD,wherein the master control processor is configured to;

    determine whether the PSE chip has supplied power to a PD;

    obtain state information of the PSE chip when the PSE chip has supplied power to the PD; and

    initialize the PSE chip when the PSE chip has not supplied power to the PD.

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