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US09471140B2 Valid context status retention in processor power mode management 有权
处理器电源模式管理中的有效上下文状态保留

Valid context status retention in processor power mode management
Abstract:
A system having multiple power mode types, for example, includes a power manager that is responsive to a selection of a suspend power mode type for maintaining processor context information in volatile memory while the processor is in the selected suspend mode. A status register is arranged to retain the status of the context information in the volatile memory while the processor is in the selected suspend power mode. The power manager is arranged to selectively apply power to various voltage domains in response to the type of power mode selected. The processor is optionally arranged to signal the power manager of transitions to the selected suspend mode and of transitions to an active mode using a power enable signal.
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