Devices routing wakeup signals using physical layer directly to power management circuit without waking up link layer
First Claim
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1. A device comprising:
- a power management circuit; and
a plurality of physical layers, a first of the plurality of physical layers being configured to detect changes in signals associated with a wakeup of the device, and to transmit a detection signal directly to the power management circuit based on the detection.
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Abstract
In a method of operating a device, signals associated with wakeup of the device are detected using a first physical layer among a plurality of physical layers, and a detection signal is generated based on the detected signals. The detection signal is transmitted directly to a power management circuit. The first physical layer is included in logical lane #0 or physical lane #0.
21 Citations
20 Claims
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1. A device comprising:
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a power management circuit; and a plurality of physical layers, a first of the plurality of physical layers being configured to detect changes in signals associated with a wakeup of the device, and to transmit a detection signal directly to the power management circuit based on the detection. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A data processing system comprising:
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a device; an application processor integrated circuit (IC) configured to control the device; a plurality of lanes connected between the application processor IC and the device; and wherein the device includes, a power management circuit, and a plurality of physical layers, a first of the plurality of physical layers being configured to detect changes in signals associated with a wakeup of the device from the application processor IC, and to transmit a detection signal directly to the power management circuit based on the detection. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A device comprising:
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a power management controller configured to control power to the device based on a wakeup detection signal; and an analog front end circuit at a physical layer of the device, the analog front end circuit being configured to generate the wakeup detection signal in response to detection of changes in a wakeup command signal, and to transmit the wakeup detection signal to the power management controller without passing through a device management entity at a link layer of the device. - View Dependent Claims (17, 18, 19, 20)
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Specification