QG5000XSL9TH Datasheet, PDF (101/458 Pages) Intel Corporation – Intel 5000X Chipset Memory Controller Hub (MCH)

Register Description
Figure 3-4 illustrates how each PCI Express port’s configuration space appears to
software. Each PCI Express port’s configuration space has four regions:
• Standard PCI Header - This region closely resembles a standard PCI-to-PCI
bridge header.
• PCI Device Dependent Region - The region is also part of standard PCI
configuration space and contains the PCI capability structures. For the Intel 5000P
Chipset MCH, the supported capabilities are:
— Message Signalled Interrupts
— Hot-plug
— PCI Express Capability
• PCI Express Extended Configuration Space - This space is an enhancement
beyond standard PCI and only accessible with PCI Express aware software. The
MCH supports the Enhanced Error Signalling capability.
• Capability Working Register Sets - These ranges are indirectly accessed
through Data and Select registers in the capability structures. For the MCH,
working register sets exist for the Standard hot-plug Controller and Power
Management capabilities.
Intel^® 5000X Chipset Memory Controller Hub (MCH) Datasheet
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