Power supply selection for multiple circuits on an integrated circuit
First Claim
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1. An integrated circuit comprising a plurality of circuits, the integrated circuit comprising:
- control circuitry for providing first control information and for providing second control information;
a first power circuit for receiving the first control information and for providing a first voltage,wherein the first voltage is determined by the first control information, andwherein the first power circuit comprises a first charge pump and a first regulator coupled via a first feedback path from the first regulator to the first charge pump;
a second power circuit for receiving the first control information and for providing a second voltage,wherein the second voltage is determined by the first control information, andwherein the second power circuit comprises a second charge pump and a second regulator coupled via a second feedback path from the second regulator to the second charge pump; and
switching circuitry coupled to the plurality of circuits, to the first power circuit, and to the second power circuit, said switching circuitry receiving the second control information,wherein the first power circuit is couplable via the switching circuitry to a first one of the plurality of circuits in response to the second control information received by the switching circuitry, andwherein the second power circuit is couplable via the switching circuitry to said first one of the plurality of circuits in response to the second control information received by the switching circuitry.
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Abstract
An integrated circuit comprising a plurality of circuits is provided. The integrated circuit further comprises a plurality of power circuits, wherein each of the plurality of power circuits can supply a selected voltage to at least one of the plurality of circuits.
16 Citations
21 Claims
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1. An integrated circuit comprising a plurality of circuits, the integrated circuit comprising:
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control circuitry for providing first control information and for providing second control information; a first power circuit for receiving the first control information and for providing a first voltage, wherein the first voltage is determined by the first control information, and wherein the first power circuit comprises a first charge pump and a first regulator coupled via a first feedback path from the first regulator to the first charge pump; a second power circuit for receiving the first control information and for providing a second voltage, wherein the second voltage is determined by the first control information, and wherein the second power circuit comprises a second charge pump and a second regulator coupled via a second feedback path from the second regulator to the second charge pump; and switching circuitry coupled to the plurality of circuits, to the first power circuit, and to the second power circuit, said switching circuitry receiving the second control information, wherein the first power circuit is couplable via the switching circuitry to a first one of the plurality of circuits in response to the second control information received by the switching circuitry, and wherein the second power circuit is couplable via the switching circuitry to said first one of the plurality of circuits in response to the second control information received by the switching circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An integrated circuit comprising a plurality of circuits, the integrated circuit comprising:
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a plurality of power circuits, wherein each of the plurality of power circuits can supply a selected voltage to more than one of the plurality of circuits; and switching circuitry coupled to the each of the plurality of circuits and to each of the plurality of power circuits, said switching circuitry receiving control information, wherein the switching circuitry switches a first one of the plurality of circuits from being coupled to the first power circuit to being coupled to the second power circuit in response to the control information. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for providing a selected voltage to one of a plurality of circuits located on an integrated circuit, the method comprising:
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in response to a control signal configuring a first connectivity, coupling a first power circuit to a first one of a plurality of circuits for providing power from the first power circuit to the first one of the plurality of circuits; and in response to the control signal configuring a second connectivity, coupling a second power circuit to said first one of the plurality of circuits for providing power from the second power circuit to said first one of the plurality of circuits. - View Dependent Claims (18, 19, 20, 21)
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Specification