Power management
First Claim
1. An electronic device comprising at least two power management circuits and a signal line connecting said at least two power management circuits;
- wherein each of said at least two power management circuits is adapted to control a power supply to at least one functional component of said electronic device associated to said power management circuit;
wherein each of said at least two power management circuits is adapted to detect a condition which requires powering down functional components of said electronic device;
wherein each of said at least two power management circuits is adapted to set said signal line to a predetermined state, in case said power management circuit detects a condition which requires powering down functional components of said electronic device;
wherein each of said at least two power management circuits is adapted to monitor a state of said signal line; and
wherein each of said at least two power management circuits is adapted to power down all functional components associated to it upon detection of said predetermined state of said signal line.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to an electronic device comprising at least two power management circuits and a signal line connecting the circuits. Each of the circuits is adapted to control a power supply to at least one functional component of the electronic device. Each of the circuits is adapted to detect a condition which requires powering down functional components of said electronic device and to set the signal line to a predetermined state, in case the circuit detects a condition which requires a powering down of the electronic device. Further, each of the circuits is adapted to monitor a state of the signal line and to power down all functional components associated to it upon detection of the predetermined state of the signal line.
17 Citations
13 Claims
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1. An electronic device comprising at least two power management circuits and a signal line connecting said at least two power management circuits;
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wherein each of said at least two power management circuits is adapted to control a power supply to at least one functional component of said electronic device associated to said power management circuit;
wherein each of said at least two power management circuits is adapted to detect a condition which requires powering down functional components of said electronic device;
wherein each of said at least two power management circuits is adapted to set said signal line to a predetermined state, in case said power management circuit detects a condition which requires powering down functional components of said electronic device;
wherein each of said at least two power management circuits is adapted to monitor a state of said signal line; and
wherein each of said at least two power management circuits is adapted to power down all functional components associated to it upon detection of said predetermined state of said signal line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power management circuit comprising:
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a signal line terminal enabling a connection to a signal line; and
a power supply terminal enabling a control of a power supply to a functional component associated to said power management circuit;
wherein said power management circuit is adapted to detect a condition which requires powering down a functional component associated to said power management circuit;
wherein said power management circuit is adapted to set a signal line connected to said signal line terminal to a predetermined state, in case said power management circuit detects a condition which requires powering down a functional component associated to said power management circuit;
wherein said power management circuit is adapted to monitor a state of a signal line connected to said signal line terminal; and
wherein said power management circuit is adapted to power down a functional component associated to said power management circuit upon detection of said predetermined state of a signal line connected to said signal line terminal.
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12. A chip comprising at least one functional component and a power management circuit adapted to control a power supply to said at least one functional component,
wherein said power management circuit is adapted to detect a condition which requires powering down said at least one functional component; -
wherein said power management circuit is adapted to set a signal line to a predetermined state, in case said power management circuit detects a condition which requires powering down said at least one functional component;
wherein said power management circuit is adapted to monitor a state of a signal line; and
wherein said power management circuit is adapted to power down said at least one functional component upon detection of said predetermined state of said signal line.
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13. A method for operating an electronic device comprising at least two power management circuits and a signal line interconnecting said at least two power management circuits, wherein at least one functional component of said electronic device is associated to each of said at least two power management circuits, and wherein each of said at least two power management circuits is adapted to control a power supply to said at least one associated functional component, said method comprising at one of said at least two power management circuits:
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monitoring a state of said signal line;
monitoring an entry of a condition which requires powering down functional components of said electronic device;
setting said signal line to a predetermined state, in case a condition which requires a powering down of said electronic device is detected; and
powering down all functional components associated to said power management circuit upon detection of said predetermined state of said signal line.
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Specification