AMD XC4VLX25-10FF668C
- Part No.:
- XC4VLX25-10FF668C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 668-BBGA, FCBGA
- Datasheet:
-
XC4VLX25-10FF668C.pdf
- Description:
- IC FPGA 448 I/O 668FCBGA
- Quantity:
- Payment:

- Shipping:

Inventory:2,085
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Product details
Overview
XC4VLX25-10FF668C 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, configured in a 668-pin Fine-Pitch Flip-Chip BGA (FF668) package for high-density system-on-chip integration in wired infrastructure and test equipment.
For engineers reviewing the XC4VLX25-10FF668C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count (448 user I/Os), speed grade (-10), LVDS/BLVDS support, and SelectIO™ interface flexibility across multiple voltage standards.
Technical Context
The XC4VLX25-10FF668C implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), dedicated carry chains, and distributed RAM. It supports multi-standard I/O operation including LVCMOS, LVTTL, HSTL, SSTL, and differential signaling such as LVDS and RSDS.
It integrates hard-wired clock management tiles (DCMs) for phase-matched clock synthesis and jitter reduction, and supports partial reconfiguration via ICAP interface. Configuration is performed through Master SelectMAP, Slave SelectMAP, or JTAG modes using external PROM or processor-controlled loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Cells | 24,576 - provides gate-equivalent capacity for medium-complexity digital signal processing and protocol bridging logic |
| Block RAM | 1,244,160 bits (1.2 Mb) - enables on-chip buffering for video frame stores or packet FIFOs without external memory |
| DSP Slices | 192 × DSP48 - delivers 192 parallel 18×18-bit multiply-accumulate operations per clock cycle |
| User I/O Pins | 448 - supports wide parallel buses, multi-lane SerDes interfaces, or dense peripheral connectivity |
| Speed Grade | -10 - guarantees timing closure up to 500 MHz system clock frequency under worst-case conditions |
| Package | FF668 - 27×27 mm fine-pitch flip-chip BGA with 1.0 mm ball pitch and thermal lid for high-power density applications |
| Configuration Mode | Master/Slave SelectMAP or JTAG - enables flexible boot sources including SPI flash, microcontroller, or boundary-scan programming |
Pinout & Package
The XC4VLX25-10FF668C is housed in a 668-ball Fine-Pitch Flip-Chip BGA (FF668) package with thermal lid, designed for controlled impedance routing and efficient heat dissipation in high-speed PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCINT | Core power supply | 1.2 V ±3% supply for CLB, RAM, and DSP logic; requires low-noise regulation and local decoupling |
| VCCAUX | Auxiliary power supply | 2.5 V ±5% supply for configuration logic, DCMs, and SelectIO™ buffers |
| VCCO | I/O bank power | Programmable per-bank voltage (1.2–3.3 V) enabling mixed-voltage interface coexistence |
| PROGRAM_B | Active-low configuration reset | Asynchronous assertion clears configuration memory and initiates reload from master mode source |
| DONE | Configuration status indicator | Open-drain output that goes high when configuration completes successfully and device enters user mode |
| CCLK | Configuration clock input | Drives internal configuration shift register; frequency ≤ 50 MHz in SelectMAP mode |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated DCMs | Eight Digital Clock Managers provide zero-delay buffering, duty-cycle correction, and frequency synthesis without logic resource usage |
| SelectIO™ Technology | Supports 18 I/O standards including LVDS, BLVDS, RSDS, and SSTL-2/3 with programmable drive strength and slew rate control |
| Partial Reconfiguration | Enables dynamic logic module swapping via ICAP port while maintaining active functionality in other regions |
| Hard-IP PCI Interface | Integrated 64-bit, 66 MHz PCI v2.3 compliant interface reduces FPGA fabric overhead for host bus interfacing |
| Multi-Standard Memory Controllers | On-die DDR/DDR2 SDRAM controller logic supports up to 400 MHz data rates with calibration-ready timing parameters |
Applications
| Wireless Baseband Processing | High-Speed Test Equipment |
|---|---|
Use Scenario: Real-time channel coding/decoding and modulation/demodulation in 3G/LTE physical layer processing. IC Role / Device Role / Timing Role: Programmable baseband processor implementing adaptive filter banks, FFT engines, and turbo decoder pipelines. Use Value: 192 DSP48 slices enable concurrent execution of 192 complex multiply-accumulate operations per cycle, accelerating real-time signal processing. | Use Scenario: High-precision waveform generation and acquisition in automated test systems for semiconductor validation. IC Role / Device Role / Timing Role: Timing controller and pattern generator synchronizing multi-channel DAC/ADC sampling at >200 MSPS. Use Value: 448 user I/Os and LVDS-capable banks allow direct connection to 32+ high-speed analog front-ends with sub-nanosecond skew control. |
| Optical Transport Networking | Industrial Protocol Bridging |
Use Scenario: Forward error correction (FEC) and OTU frame mapping in 10 Gbps SONET/SDH line cards. IC Role / Device Role / Timing Role: Line-side framer and FEC engine handling OTU2/OTU1 encapsulation and Reed-Solomon decoding. Use Value: Block RAM capacity (1.2 Mb) accommodates full OTU2 frame buffering (up to 4096-byte payloads) with dual-port access for pipeline staging. | Use Scenario: Translation between Modbus TCP, PROFINET, and EtherCAT protocols in factory automation gateways. IC Role / Device Role / Timing Role: Protocol-aware bridge engine performing packet inspection, header rewriting, and deterministic latency scheduling. Use Value: Hard-IP PCI interface enables seamless integration with x86-based industrial controllers while offloading protocol stack execution from host CPU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA-based digital logic acceleration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XC4VLX40-10FF668C | Higher logic capacity (40,128 CLBs), +64% more block RAM, same FF668 package and I/O count | Supports larger protocol stacks or wider datapaths; requires higher static power budget | Select when design exceeds XC4VLX25-10FF668C resource utilization by >20% in LUT or RAM usage |
| XC5VLX30-1FF668C | Virtex-5 architecture; 30k logic cells, enhanced DSP48E slices, lower static power, but no native PCI hard IP | Better for new designs targeting lower power or higher clock frequencies; lacks legacy PCI interface | Choose XC5VLX30-1FF668C for greenfield projects where PCI compatibility is not required and power efficiency is prioritized |
Compared with XC4VLX25-10FF668C, XC4VLX40-10FF668C offers headroom for future feature expansion within identical board layout, while XC5VLX30-1FF668C trades legacy PCI support for improved power-performance ratio and advanced transceiver options-neither is pin-compatible, requiring PCB revision.
Availability
XC4VLX25-10FF668C is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and industrial automation applications requiring stable component supply across extended product lifecycles.
Supply support for XC4VLX25-10FF668C 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 originally designed by Xilinx for high-performance, system-level integration in wired communications, military/aerospace, and test & measurement systems requiring deterministic timing and multi-standard I/O.
FAQ
What is the maximum operating frequency supported by XC4VLX25-10FF668C?
The XC4VLX25-10FF668C speed grade -10 guarantees timing closure for system clocks up to 500 MHz under worst-case voltage and temperature conditions. Actual achievable frequency depends on design complexity, routing congestion, and I/O standard selection-verified timing reports must be generated using Xilinx ISE 14.7 or earlier toolchains compatible with Virtex-4 architecture.
Does XC4VLX25-10FF668C support JTAG-based configuration?
Yes, XC4VLX25-10FF668C supports IEEE 1149.1 JTAG boundary-scan configuration in addition to Master/Slave SelectMAP modes. JTAG enables in-system programming, debugging, and verification without requiring external configuration memory, making it ideal for prototype validation and field updates.
What I/O standards are supported by XC4VLX25-10FF668C?
XC4VLX25-10FF668C supports 18 SelectIO™ standards including LVCMOS, LVTTL, HSTL, SSTL, LVDS, BLVDS, and RSDS. Each I/O bank is independently configurable for voltage (1.2–3.3 V), drive strength, and slew rate, enabling mixed-signaling interfaces on a single device.
Is partial reconfiguration supported on XC4VLX25-10FF668C?
Yes, XC4VLX25-10FF668C supports partial reconfiguration via its Internal Configuration Access Port (ICAP). This allows dynamic replacement of logic modules while the rest of the design remains operational-a capability used in runtime-adaptive systems like cognitive radio or multi-standard test equipment.
What is the thermal management requirement for XC4VLX25-10FF668C?
XC4VLX25-10FF668C uses a thermally enhanced FF668 package with integrated heat spreader. For sustained operation at full utilization, a 4-layer PCB with ≥2 oz copper planes, thermal vias under the package, and airflow ≥200 LFM is recommended. Junction temperature must remain below 100°C per Xilinx DS112 specification.
XC4VLX25-10FF668C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Virtex®-4 LX
- Package/Case:
- 668-BBGA, FCBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 2688
- Number of Logic Elements/Cells:
- 24192
- Total RAM Bits:
- 1327104
- Number of I/O:
- 448
- Number of Gates:
- -
- Voltage - Supply:
- 1.14V ~ 1.26V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 668-FCBGA (27x27)
XC4VLX25-10FF668C FAQ
1.How can I place an order for XC4VLX25-10FF668C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC4VLX25-10FF668C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XC4VLX25-10FF668C reliable?
The price and inventory of XC4VLX25-10FF668C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC4VLX25-10FF668C is usually 5 days.
3.What payment methods are accepted for XC4VLX25-10FF668C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC4VLX25-10FF668C transactions.
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XC4VLX25-10FF668C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC4VLX25-10FF668C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XC4VLX25-10FF668C?
For technical support, including XC4VLX25-10FF668C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC4VLX25-10FF668C requirements.
6.How does Aetrix verify that XC4VLX25-10FF668C is sourced from the original manufacturer or authorized distributors?
All XC4VLX25-10FF668C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XC4VLX25-10FF668C meets industry standards.
7.What is the process for return or replacement of XC4VLX25-10FF668C?
All XC4VLX25-10FF668C units undergo pre-shipment inspection (PSI). If there is an issue with XC4VLX25-10FF668C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XC4VLX25-10FF668C part is unused and in its original packaging.
Return procedure for XC4VLX25-10FF668C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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