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PHY Based Wake Up From Low Power Mode Operation

  • US 20140281626A1
  • Filed: 03/15/2013
  • Published: 09/18/2014
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a system on chip (SOC) integrated circuit comprising a first region having a processing core and a second region electrically isolated from the first region and comprising an always on domain power island with a power control block, the power control block comprising an energy detector coupled to a host input line;

    a first power supply module adapted to selectively apply power to the first region responsive to a main switch; and

    a second power supply module adapted to continuously supply power to the second region, wherein the power control block opens the main switch to enter a low power mode during which no electrical power is supplied to the first region, and the power control block closes the main switch to resume application of electrical power to the first region responsive to a detection of electrical energy on the host input line by the energy detector.

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