General
The chapter entitled “Overview of the Processor Role” on page 9 provides a good introduction to the processor's role in the system.
Refer to Figure 34-1 on page 825. In a system that incorporates PCI Express, the Root Complex plays the role that used to be played by the Memory Control Hub (MCH), or the North Bridge. It is a bridge between the processor(s) and the remainder of the system. It also incorporates the system memory controller. For a complete description of the PCI Express spec, refer to the MindShare book entitled PCI Express System Architecture (published by Addison-Wesley).
Figure 34-1. An Example System
A system may incorporate one or more processors. The maximum number of processors currently supported ...
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