PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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PCI/PCI-X/<strong>PCIe</strong> Bridges<br />
n<br />
Bridges are the mechanism that PCI devices use<br />
communicate to the host system resources, to<br />
other PCI devices, and to other PCI busses in the<br />
system<br />
n<br />
Several bridge types have been defined<br />
l<br />
l<br />
Host/PCI and host/PCI-X bridges<br />
– If multiple host bridges in system, one must be hardwired to<br />
indicate access to PCI bus 0<br />
– PCI/PCI (P-P bridge), PCI-X/PCI-X, and PCI/PCI-X bridges are<br />
defined<br />
The <strong>PCIe</strong> root complex is the equivalent to the PCI host-to-<br />
PCI bus bridge, only it implements the <strong>PCIe</strong> added<br />
functions, the <strong>PCIe</strong> protocol stack, and the <strong>PCIe</strong> serial link<br />
– <strong>PCIe</strong> switches are defined in terms of P-P bridges<br />
Copyright by Dashcourses, Inc. 2009<br />
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