While PCI™ and PCI-X™ use parallel buses, PCI Express® is a general-purpose serial I/O interconnect that can be leveraged for communications, embedded, storage, server, mobile, and desktop applications. It can also be used as a peripheral device interconnect, a chip-to-chip interface, and a bridge to other standards such as 1394b, USB2.0, InfiniBand™ and Ethernet.
Why use the Xilinx solution for PCIe?
Implemented in 65-nm technology, the Virtex®-5 FPGA end-point block for PCI Express is low-risk and standards-compliant. The corresponding development kit incorporates proven IP and protocol-specific characterization reports.
Virtex-5: PCI Express solutions for wired networking and telecom and wireless
The Virtex-4 FX FPGA and Virtex-II Pro FPGAs offer powerful integrated Multi-Gigabit Transceivers (MGTs) up to 6.5 Gbps and soft IP to enable a solution for PCI Express:
The Spartan™-3 FPGA family is ideal for single lane solutions for PCI Express. Xilinx and Philips (now NXP Semiconductor) offer the lowest-cost two-chip programmable solution for PCI Express using a configurable Xilinx PIPE Endpoint LogiCORE™ IP for PCI Express.