PCI has been the most widely used bus standard in the PC, server, and embedded markets for the past decade. Because PCI is limited by its shared, central arbitrationbased architecture and system-synchronous clocking scheme, current and next-generation processors are outstripping its ability to keep up.

PCI’s emerging replacement is PCI Express, a new connectivity standard that preserves the flexibility and familiarity of PCI while dramatically increasing bandwidth and performance. The controlling body for the PCI specification, the PCI SIG, has ratified PCI Express as the nextgeneration PCI. PCI Express-based products are now becoming available; shipments are expected to achieve high volume as early as 2006.

This article explains how Spartan FPGAs are ideal for next-generation PCI applications and systems.

Reprinted with permission from Xcell Journal / Second Quarter 2005. Article © Xcell Journal.