The XCKU040-3FBVA900E is a high-performance Xilinx FPGA from the Kintex UltraScale family, built on AMD’s 20nm process technology. Designed to deliver the optimal balance of price, performance, and power efficiency, this device is widely used in 100G networking, medical imaging, 5G wireless infrastructure, and data center acceleration. If you are sourcing or evaluating the XCKU040-3FBVA900E, this guide covers everything you need — from core specifications and I/O capabilities to application fields and ordering information.

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What Is the XCKU040-3FBVA900E?

The XCKU040-3FBVA900E belongs to AMD Xilinx’s Kintex UltraScale FPGA series, a mid-range family engineered to meet demanding signal processing, networking, and compute requirements without the cost overhead of high-end Virtex devices. The “-3” suffix denotes the fastest commercial speed grade available in this device variant, making it the top-performing option in the XCKU040 lineup for timing-critical designs. The “FBVA900” indicates the 900-pin Fine-pitch Ball Grid Array (FCBGA) package with a 35mm × 35mm footprint.

This device integrates 424,200 logic cells, 1,920 DSP slices, and 20 GTH high-speed transceivers capable of data rates up to 16.3 Gb/s, making it a strong choice for any application demanding high computational throughput and multi-gigabit serial connectivity.

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XCKU040-3FBVA900E Key Specifications

General Device Parameters

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Logic and Memory Resources

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I/O and Connectivity

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Clocking and Configuration

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XCKU040-3FBVA900E Part Number Decoder

Understanding the part number helps confirm you are ordering the exact variant required.

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XCKU040-3FBVA900E vs. Other XCKU040 Variants

The XCKU040 is available in multiple speed grades and packages. Choosing the right variant depends on your performance requirements, pin budget, and temperature range.

The XCKU040-3FBVA900E provides the best timing closure margin of all commercial-grade XCKU040 options, making it the preferred choice for designs running at maximum clock frequency.

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XCKU040-3FBVA900E High-Speed Transceiver Capabilities

GTH Transceiver Performance

The 20 on-chip GTH transceivers are one of the most important features of the XCKU040-3FBVA900E. Each GTH channel supports:

• Line rates from 500 Mb/s up to 16.3 Gb/s
• Full-duplex operation
• Integrated PCS (Physical Coding Sublayer) with 8B/10B, 64B/66B, and 64B/67B encoding
• Built-in clock data recovery (CDR)
• Low-power sleep and power-down modes
• Equalization and pre-emphasis for signal integrity on PCBs and backplanes

With 20 transceivers running at 16.3 Gb/s full duplex, the aggregate bandwidth reaches 652 Gb/s, enabling designs such as 4×100G QSFP interfaces, PCIe Gen3 x8 host controllers, or high-density serial fabric interconnects.

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XCKU040-3FBVA900E Application Fields

#### 100G Networking and Packet Processing

The XCKU040-3FBVA900E includes hard-IP blocks for 100G Ethernet (CMAC) and 150G Interlaken, allowing designers to implement line-rate packet processing engines without consuming programmable logic. This makes the device well suited for network interface cards (NICs), SmartNICs, network switches, and deep packet inspection (DPI) systems.

#### 5G and Wireless Infrastructure

The combination of high DSP count (1,920 slices), wide memory bandwidth, and multi-gigabit transceivers makes the XCKU040-3FBVA900E a strong fit for 5G base station processing, including digital front-end (DFE), beamforming, and remote radio head (RRH) applications. The device is specifically cited in AMD documentation for 8×8 100 MHz TD-LTE radio unit designs.

#### Medical Imaging and Diagnostic Equipment

High-speed ADC interfacing through the GTH transceivers, combined with large DSP and block RAM resources, enables real-time image reconstruction in MRI, CT, and ultrasound systems. The XCKU040-3FBVA900E supports the bandwidth and deterministic latency required in safety-critical medical applications.

#### Data Center Acceleration

The PCIe Gen3 x8 hard IP allows seamless integration into server PCIe slots for hardware acceleration of tasks such as encryption, compression, AI inference, and financial analytics. The high I/O count (468 user I/Os) simplifies interface design to DRAM, flash, and other peripherals.

#### Defense, Aerospace, and Industrial Control

The -3 speed grade and the availability of industrial temperature variants in the XCKU040 family (sourced as companion parts) make this platform suitable for radar signal processing, electronic warfare, and robust industrial control systems requiring high compute performance in constrained SWaP (Size, Weight, and Power) envelopes.

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Development Tools and Design Flow

Designs targeting the XCKU040-3FBVA900E are supported by AMD’s Vivado Design Suite, which provides:

• RTL synthesis, implementation, and place-and-route
• Timing and power analysis
• IP Integrator for block-level design (AXI4-based IP catalog)
• Simulation with Vivado Simulator or third-party tools (ModelSim, Questa, VCS)
• Partial reconfiguration (PR) support
• High-Level Synthesis (HLS) via Vitis HLS for C/C++ to RTL flows

The XCKU040 is also supported by the KCU105 Evaluation Kit from AMD, which provides a complete reference design environment including DDR4 SDRAM, PCIe, SFP+, and FMC expansion connectivity.

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Ordering Information

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Frequently Asked Questions About the XCKU040-3FBVA900E

What is the difference between speed grade -3 and -2 in the XCKU040?

Speed grade -3 is the faster commercial variant. It guarantees better worst-case timing across voltage and temperature corners, allowing higher maximum operating frequencies. Designs with tight timing budgets or high-frequency clock domains benefit from the -3 grade. The -2 grade is more common in production due to lower cost, but the -3 is preferred for prototyping or performance-critical final designs.

Is the XCKU040-3FBVA900E pin-compatible with the XCKU035 or XCKU060?

The XCKU040 in the 900-pin FBVA package shares footprint compatibility with the XCKU035 in the same package, allowing device migration without PCB redesign. Migration to the XCKU060 requires a larger package (FFVA1156 or FFVA1517). Always verify pinout compatibility using the UltraScale Package Files from AMD before committing to a PCB layout.

What memory interfaces does the XCKU040-3FBVA900E support?

The device supports DDR4, DDR3/DDR3L, LPDDR3, RLDRAM 3, and QDR-IV through the integrated memory interface IP (MIG). DDR4 interfaces can run at speeds exceeding 2,400 Mb/s on HP I/O banks, supporting bandwidth-intensive applications such as real-time video processing and data buffering.

Does the XCKU040-3FBVA900E include UltraRAM?

No. UltraRAM (URAM) is a feature introduced in the UltraScale+ generation. The XCKU040-3FBVA900E is a Kintex UltraScale device and relies on block RAM (BRAM) for on-chip storage. If your design requires large on-chip memories (e.g., multi-megabyte lookup tables or packet buffers), the Kintex UltraScale+ family (XCKU5P, XCKU9P) should be evaluated.

What design security features are available?

The XCKU040-3FBVA900E supports AES-256 bitstream encryption to protect intellectual property stored in the configuration bitstream. It also supports HMAC/SHA-256 authentication. These features prevent unauthorized copying or reverse engineering of FPGA designs in production hardware.

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Summary

The XCKU040-3FBVA900E is a production-ready, high-performance FPGA that hits a strong price/performance/watt point in AMD’s Kintex UltraScale lineup. With 424,200 logic cells, 1,920 DSP slices, 20 GTH transceivers at 16.3 Gb/s, hard-IP PCIe Gen3 x8, and 100G Ethernet blocks — all in a compact 900-pin FCBGA package — it addresses a wide range of demanding applications from 5G wireless to data center acceleration. Paired with the Vivado Design Suite, it provides a mature, well-documented development environment suitable for both prototyping and volume production.