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A25 - Embedded Single Board Computer with Intel Xeon D

6U VMEbus for Industrial Applications

The A25 is a high-performance multicore processor VMEbus CPU board based on Intel's Xeon D-1500 server CPU.

  • A25 Product ImageA25 6U VMEbus Intel Xeon D-1519 CPU
  • A25 Product ImageA25 6U VMEbus CPU front view
  • A25 Product ImageA25 6U VMEbus CPU with a mounted PMC module
  • A25 Product Image
  • A25 Product Image
  • A25 Product Image

Main Features

  • Intel Xeon D-1500 (Broadwell DE)
  • Up to 16 cores and 32 threads
  • 64-bit VMEbus master and slave interfaces
  • Up to 32 GB DDR4 DRAM soldered, ECC
  • Front I/O: 3 Gb Ethernet, 2 USB 3.0, 2 COM
  • Rear I/O: 2 Gb Ethernet
  • 1 PMC/XMC slot
  • Trusted Platform Module (TPM)
A25 Product Image

Technical Data

  • The following CPU types are supported:
    • Intel Xeon D-1519, 4 cores
    • Intel Xeon D-1539, 8 cores (on request)
    • Intel Xeon D-1577, 16 cores (on request)
  • Intel Virtualization Technology (Intel VT)
    • VT-d
    • VT-x
  • Intel Turbo Boost Technology
  • Intel Hyper-Threading Technology
Trusted Platform Module (TPM 2.0)
  • System RAM
    • Soldered DDR4, ECC support
    • 4 GB, 8 GB, 16 GB or 32 GB
  • Boot Flash
    • 16 MB
Mass Storage
The following mass storage devices can be assembled:
  • microSD card
  • mSATA disk
Front Interfaces
  • USB
    • Two Type A connectors, host, USB 3.0
    • One Type A connector, USB-to-UART, for UART functionality using a USB 2.0 connection
  • Ethernet
    • Three RJ45 connectors, 1000BASE-T, or
    • Six link and activity LEDs (two per channel)
  • UART
    • One physical interfaces RS232 on RJ45 connector
  • PMC/XMC front I/O if populated
  • Status LED
  • Reset button
Onboard Interfaces
  • The board supports either one PMC module or one XMC module.
  • XMC
    • One slot
    • Compliant with XMC standard VITA 42.3-2006
    • One x8 PCI Express link, PCIe 3.0
    • 5 V / 3.3 V V(I/O)
  • PMC
    • One slot
    • Compliant with PMC standard IEEE 1386.1
    • Up to 64-bit/133-MHz, 3.3 V V(I/O)
  • PCI Express Mini Card slot
    • One x1 PCI Express link
    • One USB 2.0 interface
Rear Interfaces
  • Two channels, 1000BASE-T on P0 connector
Supervision and Control
  • Board management controller
  • Watchdog timer
  • Temperature measurement
  • Real-time clock
    • with supercapacitor, or
    • with battery backup (optional)
Backplane Standard
  • VME64 and VME64x Specification
  • The following features are supported:
    • Master: D08(EO):D16:D32:D64(DMA only):A16:A24:A32:BLT:MBLT, non-privileged program/data, supervisory
    • Slave: D08(EO):D16:D32:D64:A16:A25:A32:BLT:MBLT
    • Slave access routing to SRAM or other bus via Wishbone bus (e.g. PCI)
    • Slot-1 function with auto-detection
    • Interrupter D08(O):I(7-1):ROAK
    • Interrupt handler D08(O):IH(7-1)
    • Bus requester: ROR (release on request), RWD (release when done), SGL (single level 3 fair/non-fair requester)
    • Multi-level 0-3 bus arbiter (RRS Round-Robin-Select)
    • BTO VMEbus timeout
    • ADO address only cycles
    • Mailbox functionality
    • Location Monitor A16, A24, A32
    • DMA controller with scatter gather capabilites (A24/A32/D32/D64, non-privileged, supervisory)
    • DMA access capabilities VMEbus, SRAM and other buses via Wishbone bus (e.g. PCI)
    • Utility functions
    • 1 MB local SRAM accessible via Wishbone bus
    • Geographical addressing
Electrical Specifications
  • Supply voltage
    • +5 V (-3%/+5%)
  • Power consumption
    • 60 W typ.
Mechanical Specifications
  • Dimensions
    • 6U, 4 HP
  • Weight
    • 540 g
Environmental Specifications
  • Temperature range (operation)
    • -40 °C to +60 °C
  • Temperature range (storage): -40 °C to +85 °C
  • Cooling concept
    • Air-cooled, airflow 1.5 m/s
  • Relative humidity (operation): max. 95% non-condensing
  • Relative humidity (storage): max. 95% non-condensing
  • Altitude: -300 m to +3000 m
MTBF: 267 000 h @ 40°C according to IEC/TR 62380 (RDF 2000)
  • Electrical Safety
    • EN 62368-1 (former EN 60950-1)
  • Flammability (PCBs)
    • UL 94 V-0
  • EN 55022 (radio disturbance)
  • IEC 61000-4-2 (ESD)
  • IEC 61000-4-3 (electromagnetic field immunity)
  • IEC 61000-4-4 (burst)
  • IEC 61000-4-5 (surge)
  • IEC 61000-4-6 (conducted disturbances)
BIOS/Boot Loader
AMI Aptio
Software Support
  • Linux (on request)
  • VxWorks (on request)
  • QNX (on request)
  • For more information on supported operating system versions and drivers see Software.

Ordering Information

Standard A25 Models

6U VMEbus board with quad-core Intel Xeon D-1519, 8GB DDR4, 3x 1 Gb Ethernet on RJ45, 1x RS232 on RJ45, 2x USB 3.0, 1x RS232 USB-to-UART, 1x PMC/XMC slot, 1x mSATA slot, 1x PCIe Mini Card slot, 1x microSD card slot, rear connecors P0, P1, P2, -40°C to +60°C

Miscellaneous Accessories

Service cable for USB Type A/A plug, 3 m

PCI Express Mini Cards
PX7 - PCIe Mini Card to M.2 Adapter

PCI Express Mini Card for converting PCI Express Mini to M.2 and PCI Express x1 to USB3.0, USB 3.0 extension for Box PCs, -40 to +85, conformal coated

Systems & Card Cages

MEN delivers turn-key systems completely installed (hardware, operating system, accessories), wired and tested. Different rack sizes, power supplies and backplanes on request.
For details please contact your local sales representative.



Linux driver (MEN) for RX8581/RX-8574 real-time clock for all products with an additional RTC component. Please note that this driver is already included in upstream Linux kernels starting from 3.14!

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