Up to 16 CPU Cores and 32 Gb (ECC) DDR4 Ram, XMC/PMC Slot, Multiple Gigabit Ethernet

Manufacturer: duagon MEN

MEN's A25 is a high-performance multicore VMEbus CPU board based on Intel's Xeon D-1500 server CPU. The VMEbus interface is implemented as an open-source, FPGA-based solution. This makes it both future-proof and cost-efficient with comprehensive functionality. The A25 supports a reduction of system size, a reliable long-term operation without forced air cooling, and manifold computing functions with just one computer board.


With two USB ports, three Gigabit Ethernet ports and two RS232 COMs at the front, the board offers the crucial basics of a multi-purpose industrial computer. Being equipped with DDR4 SDRAM with ECC and Flash, the need for flexible mass storage extensions is covered by slots for microSD and mSATA.


In addition, the A25 can be equipped with one XMC/PMC mezzanine card and one PCI Express Mini Card, providing additional front I/O (XMC/PMC) for functions such as graphics, mass storage, or further Ethernet. The PMC slot supports modules up to 64-bit/133-MHz PCI-X, while the XMC slot is controlled by one PCI Express x8 link. The modular extension with I/O mezzanines on a single-board computer allows configuring tailored systems from open standard components, reducing integration time and cost.


The A25 supports operation in a -40°C to +60°C temperature range. The rugged board withstands shock and vibration as all components on the board are soldered, which is a prerequisite for reliable operation and a longer product lifetime.


The A25 is a computer board well suited for critical embedded applications, especially in the industrial automation and power & energy markets, for example as the central safety platform for power plants.


CPU SpecThe 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
ChipsetIntegrated in CPU
MemorySystem Memory
• Soldered DDR4, ECC support
• 4 GB, 8 GB, 16 GB or 32 GB
Boot Flash: 16 MB
GraphicsNo onboard graphics
• Front: Three RJ45 connectors, 1000BASE-T
• Rear: Two channels, 1000BASE-T on P0 connector
StorageThe following mass storage devices can be assembled:
• microSD card
• mSATA disk
• Two Type A connectors, host, USB 3.0
• One Type A connector, USB-to-UART, for UART functionality using a USB 2.0 connection
SerialFront: One physical interfaces RS232 on RJ45 connector
Front I/OUSB
• Two Type A connectors, host, USB 3.0
• One Type A connector, USB-to-UART, for UART functionality using a USB 2.0 connection
• Three RJ45 connectors, 1000BASE-T, or
• Six link and activity LEDs (two per channel)
UART: One physical RS232 interface via RJ45 connector
PMC/XMC front I/O if populated
Status LED
Reset button
Rear I/OEthernet: Two channels, 1000BASE-T on P0 connector
OtherBoard management controller
Watchdog timer
Temperature measurement
Real-time clock
• with supercapacitor, or
• with battery backup (optional)
PlatformTrusted Platform Module (TPM 2.0)


ExpansionThe board supports either one PMC module or one XMC module.
• 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)
• 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

Backplane Standard - VME64 and VME64x Specification:
• 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 capabilities (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
ElectricalSupply voltage/power consumption:
• +5V (-3%/+5%), 60W typical consumption
MechanicalDimensions: standard double Eurocard, 233.3 mm x 160 mm
Front panel: 4HP with ejector
Conformal CoatingConformal coating on request
SoftwareTo be confirmed
TemperatureTemperature range (operation):
• -40 to +60°C
• Airflow: min. 1.5m/s
Temperature range (storage): -40 to +85°C
HumidityRelative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
WeightWithout XMC/PMCs: 540g
Altitude-300 m to +3000 m
MTBF267 000 h @ 40°C according to IEC/TR 62380 (RDF 2000)
Safety/CertificationPCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
EMCEN 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)
Warranty2 Years




Intel Xeon D-1519, 4 cores, 4GB DDR4 DRAM
Recab UK
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