AMD XC4VLX25-11FFG676I

Overview

XC4VLX25-11FFG676I from AMD (formerly Xilinx) is a Virtex-4 LX family FPGA with 24,576 logic cells, 1.2 Mb of block RAM, and 192 DSP48 slices. It features SelectIO™ technology supporting LVDS, SSTL, HSTL, and GTL interfaces, and is packaged in a 676-pin Fine-Pitch Flip-Chip BGA (FFG676) with 0.8 mm pitch. It targets high-performance embedded processing and reconfigurable digital signal processing applications.

For engineers reviewing the XC4VLX25-11FFG676I datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O voltage flexibility, embedded memory depth, DSP slice count, and thermal performance in compact BGA layouts.

Technical Context

The XC4VLX25-11FFG676I implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), dedicated carry chains, and distributed RAM. It integrates hard-wired clock management tiles (CMTs) containing DCMs for frequency synthesis and phase alignment, supporting input frequencies from 12 MHz to 500 MHz.

It supports multi-standard I/O with programmable drive strength (2–24 mA), slew rate control, and on-chip termination (up to 150 Ω). Configuration is performed via Master SelectMAP, Slave SelectMAP, or JTAG, with bitstream encryption available using AES-128.

Key Specifications

Pinout & Package

XC4VLX25-11FFG676I is housed in a 676-ball Fine-Pitch Flip-Chip BGA (FFG676) package with 0.8 mm ball pitch and 27 × 27 array. The package supports thermal dissipation via exposed thermal pad and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based reconfigurable logic applications.

Compared with XC4VLX25-11FFG676I, XC4VLX40-11FFG676I offers headroom for logic growth without board change, while XCVU9P-2FLGA2104I delivers architectural advancement at the cost of full redesign - making XC4VLX25-11FFG676I optimal for stable, cost-sensitive industrial deployments.

Availability

XC4VLX25-11FFG676I is available at Aetrix Electronics and suitable for radar signal processing, medical imaging backend, avionics data concentration, and industrial protocol gateway applications requiring stable component supply and long-term lifecycle support.

Supply support for XC4VLX25-11FFG676I 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 now develops adaptive computing platforms including FPGAs, MPSoCs, and ACAPs for high-performance and heterogeneous computing.

The Virtex-4 LX family was designed for logic-intensive, high-speed embedded applications requiring deterministic timing, multi-standard I/O, and embedded DSP capability - particularly in aerospace, defense, and medical imaging systems.

FAQ

What is the maximum operating frequency of the XC4VLX25-11FFG676I's internal logic?

The XC4VLX25-11FFG676I is speed-grade -11, meaning its worst-case internal logic delay supports a maximum system clock frequency of 500 MHz under typical conditions. This rating applies to critical paths routed through CLBs and carry chains, verified via static timing analysis using Xilinx ISE tools. Actual achievable frequency depends on design complexity, placement, and routing congestion. The XC4VLX25-11FFG676I datasheet specifies setup/hold times and propagation delays referenced to this grade.

Does the XC4VLX25-11FFG676I support JTAG boundary-scan testing?

Yes, the XC4VLX25-11FFG676I fully complies with IEEE 1149.1 (JTAG) and supports boundary-scan testing via TDI, TDO, TMS, TCK, and TRST pins. It implements mandatory instructions (SAMPLE/PRELOAD, EXTEST, BYPASS) and optional ones (IDCODE, HIGHZ). JTAG is used for configuration, debugging, and interconnect verification. The XC4VLX25-11FFG676I's BSDL file defines exact pin mappings and register lengths for test pattern generation.

Can the XC4VLX25-11FFG676I interface directly with DDR2 SDRAM?

Yes, the XC4VLX25-11FFG676I supports DDR2 SDRAM interfaces using its SelectIO technology with SSTL-18 I/O standard and programmable IODELAY elements. It meets JEDEC DDR2 timing requirements for read/write cycles at data rates up to 400 Mbps per pin. Dedicated DCMs provide phase-aligned clocks, and the XC4VLX25-11FFG676I reference designs include verified PHY layers and controller IP for reliable operation.

What configuration modes does the XC4VLX25-11FFG676I support?

The XC4VLX25-11FFG676I supports Master SelectMAP, Slave SelectMAP, JTAG, and Serial PROM (via XCFxx devices) configuration modes. Master SelectMAP uses internal oscillator and CCLK output for parallel loading; Slave SelectMAP accepts external CCLK and data. JTAG enables in-system programming and debugging. All modes are documented in the XC4VLX25-11FFG676I configuration user guide and validated in production environments.

Is the XC4VLX25-11FFG676I qualified for automotive applications?

No, the XC4VLX25-11FFG676I is rated for industrial temperature range (–40°C to +100°C) and is not AEC-Q100 qualified. It lacks automotive-specific reliability testing, failure-in-time (FIT) reporting, and qualification documentation required for automotive ECUs. While used in some avionics and industrial control systems, the XC4VLX25-11FFG676I is not approved for safety-critical automotive functions per ISO 26262.