BittWare XUP-VV4 FPGA Accelerator Card

BittWare XUP-VV4 FPGA Accelerator Card features the UltraScale+ VU13P FPGA and is ideal for high-density datacenter applications. The Xilinx UltraScale+ VU13P FPGA gives designers incredible performance potential with 3.8M logic elements. Thought this offers a power density that makes thermal management difficult. The XUP-VV4 rises to the challenge with BittWare’s Viper platform, supporting large FPGA loads, up to 512 GBytes DDR4, and 4x 100Gbps Ethernet. BittWare’s Viper platform uses advanced computer flow simulation to drive the physical board design in a thermals first approach. This includes the use of heat pipes, airflow channels, and arranging components to maximize the limited available airflow in a server.

The BittWare XUP-VV4 FPGA Accelerator Card features air cooling by default, but liquid cooling is also available. The device provides the Xilinx D2104 lidless package, allowing the heat pipes to contact the die directly, instead of through the heat spreader lid.


  • 4x 100GbE via 4 QSFP28
  • Air or Liquid Cooled
  • VU13P FPGA: 3.8 million LCs FPGA by Xilinx


  • FPGA
  • On-board Flash
    • Flash memory for booting FPGA
  • External memory
    • 4 DIMM sites, each supporting:
      • Up to 128 GBytes DDR4 x72 with ECC
      • Up to 576 Mbits dual QDR-II+ x18 (2 independent 288 Mbit banks)
  • Host interface
    • x16 Gen3 interface direct to FPGA
  • USB ports
    • Micro USB access to BMC and FPGA JTAG
  • Utility
    • Connects to a breakout board for UART, 1 PPS input, and 10MHz clock input
  • UltraPort SlimSAS
    • 2 UltraPort SlimSAS on rear edge connected to FPGA via 16x GTY transceivers
    • Can support an additional x16 or x8 PCIe interface (requires soft IP core and additional slot)
  • QSFP cages
    • 4 QSFP28 (zQSFP) cages on front panel connected directly to FPGA via 16 transceivers
    • Each supports 100GbE, 40GbE, 4x 25GbE, or 4x 10GbE and can be combined for 400GbE
  • Board Management Controller
    • Voltage, current, temperature monitoring
    • Power sequencing and reset
    • Field upgrades
    • FPGA configuration and control
    • Clock configuration
    • I2C bus access
    • USB 2.0
    • Voltage overrides
  • Cooling
    • Double-width passive heatsink - standard
    • Double-width liquid cooling - optional
  • Electrical
    • On-board power derived from 12V PCIe slot & an AUX connector (8-pin)
    • Power dissipation is application dependent
  • Environmental
    • Operating temperature 5°C to 35°C
  • Form factor
    • 3/4-length, standard-height PCIe dual-slot board
    • 10 x 4.37 inches (254 x 111.15mm)
  • System development
    • BittWorks II Toolkit – host, command, and debug tools for BittWare hardware
  • FPGA development
    • FPGA Examples – example Vivado projects
    • Xilinx Tools – Vivado® Design Suite

Block Diagram

Block Diagram - BittWare XUP-VV4 FPGA Accelerator Card
Published: 2020-06-11 | Updated: 2022-03-11