POWER MANAGEMENT METHOD AND RELATED CHIPSET AND COMPUTER SYSTEM
First Claim
1. A power management method for use in a computer system having a processor, a power management module coupled to a plurality of peripheral modules and a phase lock loop circuit (PLL), wherein the computer system and the processor are capable of being operated in a working state and a plurality of power saving states, comprising:
- when the computer system is operated in the working state and the processor is entered into a lowest power consumption state among the power saving states, detecting states of the peripheral modules to determine whether a specific condition is matched; and
if following detection, the states of the peripheral modules match to the specific condition, directing the processor to a control state to control the PLL according to a control state configuration.
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Accused Products
Abstract
A power management method for use in a computer system having a processor, a power management module and a phase lock loop circuit (PLL) is provided. The power management module is coupled to a plurality of peripheral modules and the computer system and the processor are capable of being operated in a working state and power saving states. The method includes the following. When the computer system is operated in the working state and the processor is entered into a lowest power consumption state among the power saving states, states of the peripheral modules are detected to determine whether a specific condition has been matched. If the specific condition is matched, the processor is directed to a control state to control the PLL according to a control state configuration.
14 Citations
24 Claims
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1. A power management method for use in a computer system having a processor, a power management module coupled to a plurality of peripheral modules and a phase lock loop circuit (PLL), wherein the computer system and the processor are capable of being operated in a working state and a plurality of power saving states, comprising:
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when the computer system is operated in the working state and the processor is entered into a lowest power consumption state among the power saving states, detecting states of the peripheral modules to determine whether a specific condition is matched; and if following detection, the states of the peripheral modules match to the specific condition, directing the processor to a control state to control the PLL according to a control state configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A chipset coupled to a clock generator and a processor, comprising:
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a phase lock loop circuit (PLL), generating at least one second clock signal according to a first clock signal generated by the clock generator; a gating unit coupled to the PLL, controlling the output of the second clock signal generated by the PLL; a plurality of peripheral modules, each of which having a low power consumption state; and a power management module coupled to the gating unit, the peripheral modules and the PLL, wherein when the processor enters into a lowest power consumption state among the power saving states, the power management module detects states of the peripheral modules to determine whether a specific condition is matched and if following detection, the states of the peripheral modules match to the specific condition, directs the processor to a control state to control the PLL according to a control state configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer system, comprising:
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a clock generator, generating a first clock signal; a processor; and a chipset coupled to the clock generator and the processor, comprising; a phase lock loop circuit (PLL), generating at least one second clock signal according to the first clock signal; a gating unit coupled to the PLL, controlling the output of the second clock signal generated by the PLL; a plurality of peripheral modules, each of which having a low power consumption state; and a power management module coupled to the gating unit, the peripheral modules and the PLL, wherein when the computer system is operated in a working state and the processor enters into a lowest power consumption state among the power saving states, the power management module detects states of the peripheral modules to determine whether a specific condition is matched and if following detection, the states of the peripheral modules match to the specific condition, directs the processor to a control state to control the PLL according to a control state configuration. - View Dependent Claims (21, 22, 23, 24)
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Specification