Virtex4

Virtex-4 is a family of field-programmable gate arrays (FPGAs) developed by Xilinx. Introduced in the mid-2000s, it targeted high-performance digital logic, signal processing, and communications applications. Built on a 90-nanometer fabrication process, Virtex-4 devices offered higher logic density, faster internal speeds, and improved power efficiency relative to earlier lines, along with enhanced serial transceivers.

Like other Virtex families, Virtex-4 devices combine configurable logic blocks, distributed RAM, and dedicated DSP resources with a fast programmable interconnect. The architecture supports large numbers of look-up tables, flip-flops, and multipliers for DSP workloads, and includes block RAM for data storage. Many devices provide high-speed serial transceivers for protocol interfaces such as PCI Express and SONET/SDH, and a rich set of clocking resources for timing integrity.

Within the Virtex-4 family, LX devices offered logic-centric capabilities, while FX devices integrated a PowerPC 405 hard processor core for embedded computing tasks.

Applications included telecommunications equipment, video processing, data-acquisition systems, and defense electronics.

Virtex-4 was later superseded by the Virtex-5 family, as Xilinx moved to newer process nodes and architectures.