Ebook: PCI Express to PCI/PCI-X Bridge Specification Revision 1.0

As PCI Express technology deploys into computer marketplaces, a means of preserving and extending existing industry investments in conventional PCI and PCI-X is required. Additionally, some add-in card manufacturers may desire a means of developing PCI Express Endpoint application devices that plug into platforms that exclusively support conventional PCI and PCI-X system slots.

This specification describes the PCI Express to PCI/PCI-X bridge (also referred to herein as PCI Express bridge) architecture, interface requirements, and the programming model.