PCI Express System Architecture

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This Chapter

This chapter provides a detailed description of PCI Express power management, which is compatible with revision 1.1 of the PCI Bus PM Interface Specification and the Advanced Configuration and Power Interface, revision 2.0 (ACPI). In addition PCI Express defines extensions that are orthogonal to the PCI-PM specification. These extensions focus primarily on Link Power and PM event management. This chapter also provides an overall context for the discussion of power management, by including a description of the OnNow Initiative, ACPI, and the involvement of the Windows OS is also provided.

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