System power management partitioned across a serial bus
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United States of America Patent
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Jul 29, 2003
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N/A
app pub date -
Sep 11, 1997
filing date -
Feb 18, 1997
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Abstract
An indication is provided to a first integrated circuit that a wake-up event has occurred on an input terminal of a second integrated circuit where the first and second integrated circuit are coupled by a bus. The bus is initially in a reduced power consumption state. One of the signal lines of the bus is changed from a first voltage level to a second voltage level in response to a wake-up event recognized by the second integrated circuit. The bus is changed from the reduced power consumption state to a normal power consumption state in response to the at least one signal line being at the second voltage level.
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