Interface transceiver power mangagement method and apparatus
First Claim
1. A transceiver for interconnecting electronic devices, comprising:
- at least one interface circuit having selectable power consumption coupled to one or more interface signals;
a select input coupled to said at least one interface circuit for receiving a selection signal, whereby a level of complexity of said one or more interface circuits is selected by a logic state of said select input.
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Accused Products
Abstract
An interlace transceiver power management method and apparatus reduces power consumption when interface conditions will support a transceiver having reduced complexity. Characteristics of the receiver and/or transmitter are adjusted in conformity with one or more selection signals. An interface quality measurement circuit may provide the selection signal, so that the transceiver complexity is adjusted in response to measured interface conditions or an external pin or register bit may be coupled to a select input. The receiver complexity adjustment may include the receiver sampling depth, window width, resolution or equalization complexity or other characteristic having an impact on receiver circuit power consumption. The transmitter complexity may be equalization, transmitter power or other characteristic having an impact on transmitter circuit power consumption. The select signal may be communicated from one transceiver to another, so that the power consumption at a remote location is determined by local measurement or programming.
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Citations
27 Claims
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1. A transceiver for interconnecting electronic devices, comprising:
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at least one interface circuit having selectable power consumption coupled to one or more interface signals;
a select input coupled to said at least one interface circuit for receiving a selection signal, whereby a level of complexity of said one or more interface circuits is selected by a logic state of said select input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of controlling power consumption in an interface transceiver, comprising:
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receiving an indication of that power consumption of said interface transceiver may be reduced; and
in response to said receiving, selecting a complexity of said receiver. - View Dependent Claims (26, 27)
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Specification