The XC7VX690T-L2FFG1158E is a high-performance, low-power Xilinx FPGA from AMD’s Virtex-7 XT family. Built on a 28nm high-k metal gate (HKMG) process, it delivers exceptional DSP throughput, transceiver bandwidth, and logic density — making it an ideal choice for demanding applications in telecommunications, data centers, test equipment, and high-speed signal processing.

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What Is the XC7VX690T-L2FFG1158E?

The XC7VX690T-L2FFG1158E is a member of the Virtex-7 XT (Extended Transceiver) FPGA family manufactured by Xilinx (now AMD). The “L2” speed grade designation indicates it is an extended lower-power variant offering improved performance-per-watt compared to standard commercial speed grades. The FFG1158 suffix refers to its 1158-pin Flip-Chip Ball Grid Array (FCBGA) package, while the “E” suffix indicates an extended temperature/performance grade device.

This device is particularly suited for engineers who need the high-bandwidth transceiver capabilities of the Virtex-7 XT series in a smaller 1158-pin form factor, enabling more compact PCB designs without sacrificing core performance.

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XC7VX690T-L2FFG1158E Key Specifications

General Product Information

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Logic Resources

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Memory Resources

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DSP and Signal Processing

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I/O and Transceiver Resources (FFG1158 Package)

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Clocking and Timing

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PCIe Interface

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Power Supply Requirements

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Part Number Decoder: Understanding XC7VX690T-L2FFG1158E

Breaking down the part number helps procurement engineers, designers, and distributors quickly identify key attributes:

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Key Features and Technology Highlights

28nm HPL Process Technology

The XC7VX690T-L2FFG1158E is built on Xilinx’s 28nm High-Performance Low-power (HPL) process using high-k metal gate (HKMG) transistors. This process node enables up to 50% lower power consumption compared to previous 40nm Virtex-6 generation devices, while simultaneously delivering significantly higher performance and logic density.

High-Performance 6-Input LUT Architecture

The device uses advanced 6-input lookup table (LUT) logic cells, which can be configured either as logic or as distributed RAM. This dual-purpose capability gives designers exceptional flexibility when partitioning on-chip memory and logic resources across complex designs.

GTH High-Speed Serial Transceivers

One of the most critical features of the Virtex-7 XT family is its integrated GTH transceivers capable of line rates from 600 Mb/s up to 13.1 Gb/s per channel. The transceivers include a dedicated low-power mode optimized for chip-to-chip links, making them ideal for backplane communications, optical modules, and high-speed serial fabric designs.

Integrated PCIe Gen 3 Block

The XC7VX690T-L2FFG1158E integrates up to three hardened PCI Express blocks, each supporting up to x8 Gen 3 operation. This enables designers to implement PCIe root ports or endpoints without consuming programmable fabric, reducing design complexity and improving timing closure.

High-Density Block RAM with FIFO Logic

With 1,470 dual-port 36 Kb block RAMs (totaling 52,920 Kb), this FPGA provides abundant on-chip memory for buffering, caching, and data-path storage. Each BRAM comes with built-in FIFO logic, simplifying the implementation of high-throughput data pipelines.

SelectIO High-Performance I/O Banks

The 350 user I/Os in the FFG1158 package are organized into High-Performance (HP) banks supporting I/O voltages from 1.2V to 1.8V. These banks support a wide range of industry-standard I/O protocols including LVDS, SSTL15, HSTL, and LVCMOS, with DDR3 memory interfaces running up to 1,866 Mb/s.

XADC Integrated Analog Interface

An on-chip XADC block incorporates dual 12-bit, 1 MSPS analog-to-digital converters with integrated thermal and supply voltage sensors. This enables real-time on-chip power and temperature monitoring without external measurement hardware.

Clock Management Tiles (CMT)

Fourteen CMTs, each containing one MMCM and one PLL, provide comprehensive clock synthesis, phase adjustment, and distribution resources. This makes it straightforward to implement multi-clock domain designs and high-precision timing architectures.

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Applications and Use Cases

The XC7VX690T-L2FFG1158E is well-suited for a broad range of high-performance embedded and communication system applications:

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XC7VX690T-L2FFG1158E vs. Related Part Numbers

Engineers frequently compare this device to similar parts in the same family. The table below highlights differences in speed grade and package:

The L2 speed grade is ideal for applications where power efficiency is prioritized alongside high performance, such as deployed line cards and space-constrained embedded systems.

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Development Tools and Design Flow

Xilinx Vivado Design Suite

The XC7VX690T-L2FFG1158E is fully supported by AMD’s Vivado Design Suite, the primary design environment for 7-series and newer FPGAs. Vivado provides:

• Logic synthesis and implementation
• Timing analysis and constraint management
• IP integrator for block-based design
• Simulation and hardware debug

Legacy ISE Support

The device is also compatible with Xilinx ISE 14.7, allowing designers with existing ISE-based design flows to utilize this part without immediate migration to Vivado.

IP Cores Available

A rich ecosystem of Xilinx IP cores is available for this device, including PCIe endpoints, memory controllers (MIG), Ethernet MACs (TEMAC/CMAC), high-speed transceiver PHYs, and DSP libraries — all accessible through the Vivado IP Catalog.

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Ordering and Procurement Information

Note: Always source from authorized distributors or directly from AMD/Xilinx to ensure genuine, traceable components. Counterfeit FPGAs are a known risk in the secondary market for high-value programmable devices.

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Frequently Asked Questions (FAQ)

Q: What does the “L2” speed grade mean in XC7VX690T-L2FFG1158E? The “L2” speed grade designates a Low-Power variant of the standard speed grade 2. It is optimized for reduced static and dynamic power consumption while maintaining competitive performance levels. It is ideal for applications that require high compute density with strict power budgets.

Q: Is the XC7VX690T-L2FFG1158E footprint compatible with other 1158-pin Virtex-7 XT devices? Yes. The FFG1158 package is shared across several XC7VX690T variants (e.g., -2FFG1158C, -2FFG1158I, -3FFG1158E), making board-level migration between speed grades and temperature grades straightforward without PCB redesign.

Q: What transceiver type does the XC7VX690T-L2FFG1158E use? The Virtex-7 XT family uses GTH transceivers capable of operation from 600 Mb/s up to 13.1 Gb/s, with support for protocols such as CPRI, JESD204B, PCIe Gen3, SATA, and 10G/40G Ethernet.

Q: What design tools support this device? The XC7VX690T-L2FFG1158E is supported by Xilinx Vivado Design Suite and the legacy ISE 14.7 toolchain. Vivado is recommended for all new designs.

Q: Can this FPGA be used in industrial or extended temperature applications? The “E” suffix indicates an Extended grade device, rated for junction temperatures from 0°C to 100°C. This makes it suitable for demanding industrial, telecommunications infrastructure, and high-reliability embedded system applications.

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Summary

The XC7VX690T-L2FFG1158E stands out as one of the most capable FPGA solutions in the Virtex-7 XT family for applications requiring the combination of large logic density, high-speed GTH transceivers, integrated PCIe Gen 3, and a compact 1158-pin footprint. Its 28nm HPL process technology and Low-Power L2 speed grade make it a strong candidate for next-generation communication, computing, and signal processing systems where both performance and power efficiency are mission-critical.

Whether you are designing high-speed networking ASICs replacements, building radar DSP platforms, or developing test equipment with demanding real-time requirements, the XC7VX690T-L2FFG1158E delivers the resources and flexibility to realize the most complex FPGA designs.