AMD XC5VLX20T-1FF323C

Overview

XC5VLX20T-1FF323C from AMD (formerly Xilinx) is a Virtex-5 FPGA featuring 20,736 logic cells, 1.2 MB of block RAM, 120 DSP48E slices, and a -1 speed grade in a 323-pin Fine-Pitch Flip-Chip BGA (FF323) package. It targets high-performance serial connectivity and embedded processing in aerospace and defense systems.

For engineers reviewing the XC5VLX20T-1FF323C datasheet, pinout, applications, or equivalent options, key selection criteria include I/O count (240 user I/Os), differential signaling support (LVDS, RSDS), multi-gigabit transceiver capability (up to 3.75 Gb/s), and radiation-tolerant configuration options.

Technical Context

The XC5VLX20T-1FF323C implements a hierarchical FPGA architecture with six distinct logic tile types, including configurable logic blocks (CLBs), memory tiles, and DSP slices. It integrates up to four RocketIO GTP transceivers supporting protocols such as PCI Express Gen1 and Serial RapidIO.

Configuration occurs via Master SelectMAP or JTAG, with bitstream encryption and CRC error checking enabled. The device supports partial reconfiguration and operates across industrial temperature range (0°C to 85°C junction).

Key Specifications

Pinout & Package

The XC5VLX20T-1FF323C is housed in a 323-pin Fine-Pitch Flip-Chip BGA (FF323) package with 240 user-configurable I/Os distributed across 12 I/O banks. Power delivery includes dedicated VCCINT, VCCAUX, and VCCO pins per bank, with multiple ground and reference voltage terminals for signal integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-reliability FPGA applications.

Compared with XC5VLX20T-1FF323C, the XQ5VLX20T-1RF1136Q adds radiation hardening and thermal robustness at the cost of larger footprint and higher cost, while the XC6VLX25T-1FFG484C improves raw compute and serial bandwidth but sacrifices space-qualified reliability assurance.

Availability

XC5VLX20T-1FF323C is available at Aetrix Electronics and suitable for radar signal processing, avionics data concentration, and satellite payload control requiring stable component supply across extended product lifecycles.

Supply support for XC5VLX20T-1FF323C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

AMD acquired Xilinx in 2022 and maintains legacy Virtex-5 product lines for aerospace, defense, and industrial customers requiring long-term support.

The Virtex-5 family was designed for high-performance, system-level integration in mission-critical applications where deterministic timing, radiation resilience, and multi-protocol serial connectivity are essential.

FAQ

What is the maximum operating frequency of the XC5VLX20T-1FF323C?

The XC5VLX20T-1FF323C has a -1 speed grade, meaning its internal logic paths are characterized to operate reliably up to 550 MHz for register-to-register timing under industrial temperature conditions. Actual achievable frequency depends on design placement, routing, and resource utilization. The device's DCM and PLL blocks support output frequencies up to 1.2 GHz for clock domain synthesis, but logic performance remains bound by the -1 timing specification. XC5VLX20T-1FF323C does not guarantee operation above this limit without derating.

Does the XC5VLX20T-1FF323C support partial reconfiguration?

Yes, the XC5VLX20T-1FF323C supports partial reconfiguration through its ICAP (Internal Configuration Access Port) interface, enabling dynamic replacement of logic modules without resetting the entire device. This capability requires use of Xilinx ISE 14.7 tools and adherence to modular design constraints. Partial bitstreams must be validated for timing closure and resource isolation. XC5VLX20T-1FF323C implementations have been deployed in radar systems where waveform-specific accelerators are swapped in-flight.

What configuration modes are supported by the XC5VLX20T-1FF323C?

The XC5VLX20T-1FF323C supports Master SelectMAP, Slave SelectMAP, JTAG, and Master Serial PROM modes via M0–M2 pin settings. Master SelectMAP allows autonomous boot from external parallel flash; JTAG enables debugging and programming during development. Configuration can be initiated by PROGRAM_B assertion or power-on reset. XC5VLX20T-1FF323C also supports fallback configuration for dual-image redundancy in safety-critical deployments.

Is the XC5VLX20T-1FF323C qualified for space applications?

The standard XC5VLX20T-1FF323C is not space-qualified, but the QML-V variant (XQ5VLX20T-1FF323V) is certified to MIL-PRF-38535 Class V with total ionizing dose tolerance exceeding 100 krad(Si). That variant undergoes lot acceptance testing per QML requirements and is screened for single-event latchup immunity. XC5VLX20T-1FF323C itself is rated for industrial temperature only and lacks radiation testing documentation.

What transceiver protocols does the XC5VLX20T-1FF323C support?

The XC5VLX20T-1FF323C integrates four RocketIO GTP transceivers capable of line rates from 622 Mb/s to 3.75 Gb/s. These support PCI Express Gen1 (2.5 Gb/s), Serial RapidIO Gen1 (1.25–3.125 Gb/s), Aurora, and custom 8B/10B or 64B/66B encoded protocols. XC5VLX20T-1FF323C does not support PCIe Gen2 or SATA; those require Virtex-6 or later families. Transceiver compliance is verified per ANSI TIA/EIA-644-A for LVDS physical layer signaling.