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Solving unstable universal asynchronous receive transmit (UART) communication between a power manager and a universal serial bus (USB)-bridge device

  • US 9,772,650 B2
  • Filed: 12/29/2015
  • Issued: 09/26/2017
  • Est. Priority Date: 12/29/2015
  • Status: Expired due to Fees
First Claim
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1. A device, comprising:

  • a data storage device;

    a power manager device; and

    a bridge device coupled to the data storage device and to the power manager device, configured to bridge between at least a first data protocol and at least a second data protocol, the bridge device comprising;

    a Universal Asynchronous Receive Transmit (UART);

    a first clock;

    a second clock; and

    bridge device firmware configured to cause the bridge device to selectively configure the UART for communication using one of the first clock and the second clock,wherein the power manager device is configured, when a command is to be issued to the data storage device when the bridge device firmware has configured the UART for communication using the first clock, to assert a signal that causes the bridge device firmware to stop configuring the UART for communication using the first clock and to configure the UART for communication using the second clock.

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