AMD XC4VLX25-10FFG676C

Overview

XC4VLX25-10FFG676C from AMD (formerly Xilinx) is a Virtex-4 LX family FPGA with 24,192 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 digital signal processing in telecom infrastructure equipment.

For engineers reviewing the XC4VLX25-10FFG676C datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, embedded memory capacity, DSP slice count, I/O voltage flexibility, and thermal performance in compact BGA packages.

Technical Context

The XC4VLX25-10FFG676C implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, and dedicated carry logic. It integrates hard-wired clock management tiles (CMTs) containing DCMs and PLLs for jitter reduction and frequency synthesis across multiple domains.

Its SelectIO™ interface supports programmable drive strength (2–24 mA), slew rate control, and on-chip termination (up to 150 Ω), enabling direct interfacing with DDR2 SDRAM, SERDES transceivers, and high-speed parallel buses without external termination components.

Key Specifications

Pinout & Package

XC4VLX25-10FFG676C is housed in a 676-ball Fine-Pitch Flip-Chip BGA (FFG676) package with 0.8 mm ball pitch and 27 × 27 array configuration. The package supports thermal dissipation via exposed thermal pad and provides signal integrity advantages through flip-chip interconnect geometry.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based digital signal processing applications.

Compared with XC4VLX25-10FFG676C, the -11 variant offers marginally improved timing performance without architectural change, while the XC5VLX30T introduces transceiver capability and larger memory but requires PCB redesign and toolchain migration.

Availability

XC4VLX25-10FFG676C is available at Aetrix Electronics and suitable for wireless infrastructure, test & measurement instrumentation, and industrial automation requiring stable component supply over extended production lifecycles.

Supply support for XC4VLX25-10FFG676C 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, ACAPs, and software tools for heterogeneous compute acceleration.

The Virtex-4 family was designed for high-performance logic and signal processing in wired/wireless communications, military/aerospace, and scientific computing where deterministic timing and I/O flexibility are critical.

FAQ

What is the maximum operating frequency of the XC4VLX25-10FFG676C?

The XC4VLX25-10FFG676C has a -10 speed grade, meaning its internal logic paths are characterized to operate reliably up to 400 MHz for register-to-register timing under typical conditions. Actual achievable frequency depends on design complexity, placement, and routing; timing closure must be verified using Xilinx ISE 14.7 or later tools with the XC4VLX25-10FFG676C device model.

Does the XC4VLX25-10FFG676C support JTAG boundary-scan testing?

Yes, the XC4VLX25-10FFG676C includes IEEE 1149.1-compliant JTAG TAP controller for boundary-scan testing, configuration via JTAG, and debug access to internal logic. The TDO, TDI, TCK, and TMS pins are dedicated and mapped to specific balls in the FFG676 package, and operation is supported in Xilinx iMPACT and ChipScope Pro tools.

What configuration modes does the XC4VLX25-10FFG676C support?

The XC4VLX25-10FFG676C supports Master Serial, Slave Serial, Master SelectMAP, Slave SelectMAP, and JTAG configuration modes. Configuration data can be loaded from PROM (e.g., XCFxxP), microprocessor, or host system via parallel or serial interface. Mode selection is controlled by mode pins (M0–M2) during power-up reset.

Is the XC4VLX25-10FFG676C RoHS compliant?

Yes, the XC4VLX25-10FFG676C is RoHS-6 compliant (lead-free, mercury-free, cadmium-free, hexavalent chromium-free, PBB-free, PBDE-free) and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. The FFG676 package uses matte tin finish on solder balls and complies with IPC/JEDEC J-STD-033 handling guidelines.

Can the XC4VLX25-10FFG676C interface directly with DDR2 SDRAM?

Yes, the XC4VLX25-10FFG676C supports DDR2 SDRAM interfaces through its SelectIO™ banks configured for SSTL-18 I/O standard. It provides source-synchronous capture using IDELAY/ODELAY primitives and DCM-based clock forwarding. Reference designs and UCF constraints for Micron MT47H64M8BG-3 are validated in Xilinx UG070 and XAPP695 for the XC4VLX25-10FFG676C.