Product Details

The XYCOM XVME-653, PN 74653-001, is a discontinued single-slot 6U VMEbus single board computer, built around Intel 233MHz Pentium MMX processor, designed for high-performance legacy VME control racks and embedded industrial computing systems. It integrates separate 16KB instruction cache and 16KB data cache, supporting MMX instruction set for improved data processing performance, suitable for running DOS, Windows and other PC-compatible operating systems on VME platform. It carries two 72-pin SIMM sockets, supporting up to 256MB EDO or FPM DRAM, with optional ECC or parity memory for data error protection in critical applications. It is equipped with Flash BIOS and non-volatile SRAM to preserve configuration parameters after power loss.

This SBC is equipped with abundant onboard peripheral interfaces. It integrates Intel 82558 10/100 Base-TX Ethernet controller with RJ45 front panel connector for high-speed network communication. It provides IDE and floppy disk controller, one USB port, two serial ports, one EPP/ECP parallel port, plus PS/2 keyboard and mouse interfaces. It also has onboard video controller to support direct display output for local human-machine operation. The module includes PCI local bus architecture, supporting daughter board expansion via XVME-976 auxiliary module, which extends custom I/O and communication functions. It conforms to ANSI/VITA 1-1994 VMEbus specification, capable of acting as VME bus master and slave, supporting A16/A24/A32 addressing and multiple data width transfer modes, and can manage analog, digital I/O, counter and communication modules on the VME backplane. It supports full VME 7-level interrupt system and bus arbitration, convenient for multi-board coordinated control.

Users can configure VME base address, interrupt mapping, memory allocation and peripheral parameters via BIOS setup and on-board jumpers to avoid resource conflicts with other VME modules. On-board power filtering and transient suppression circuits reduce electromagnetic interference from inverters and servo drives, maintaining stable operation in noisy factory environments. The front panel is equipped with LED indicators for power status, CPU activity, network and fault signals, helping maintenance technicians quickly locate boot failure, bus error and communication faults during commissioning and routine inspection. The PCB adopts industrial-grade electronic components and reliable EMC protection design, capable of resisting vibration, dust and temperature fluctuation in power plants, chemical facilities, aerospace test platforms and automated production lines. This legacy Pentium VME CPU board is mainly supplied as spare replacement parts for existing XYCOM VME automation systems. Users need to confirm BIOS version, memory compatibility and backplane definition before installation. A conformal coated version is optional for high humidity, dusty and corrosive industrial sites. This model is widely used in supervisory control, data logging, test station host and old VME embedded computing system retrofit projects.

This pentium vme single board computer adopts standard 6U single-height VME rack mount structure. It draws power from the VME backplane. LED indicators display power status, CPU activity and network status for convenient on-site inspection. The operating temperature range is 0°C to 65°C, storage temperature ranges from -40°C to +85°C, relative humidity 5% to 95% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports memory mapping and peripheral configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-653 processor module is widely applied in legacy VME control racks and industrial automation upgrade projects. It serves as high-performance x86 host to execute control software, collect field data and realize network transmission. As a reliable discontinued spare part, the XYCOM XVME-653 retains original VME bus timing and firmware compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.