Intel® Core™ i7 Processor Series and Extreme Edition Series Datasheet, Vol. 2
As PCI Express* technology deploys into computing and communications systems and peripherals, a means of supporting existing PCI and PCI-X deployment is required. Some add-in card manufacturers may desire a means of developing PCI Express endpoint application devices that plug into platforms that exclusively ...support PCI and PCI-X system slots. The PCI Express to PCI-X bridge architecture is a new industry-standard specification developed by the PCI-SIG. It is being introduced to satisfy the requirements for system and component architecture transition to bridge between the PCI Express and the existing PCI-X parallel busses.
This paper describes the nature of PCI Express to PCI-X bridges as implemented in both client and server computing platforms. Several factors that motivated the creation of this bridge architecture are presented and the key architectural requirements are outlined. Finally, significant aspects of the architecture are summarized and several tips on optimizing system performance are suggested.
Read the full Intel® Core™ i7 Processor Datasheet.