Acromag / Xembedded / Xycom XVME-653 VMEbus Pentium Processor Module

The Acromag/Xembedded/Xycom XVME-653 is a single-slot VMEbus processor module built around an Intel 233 MHz Pentium CPU with MMX technology. It delivers PC-compatible computing within a double-high VME form factor, enabling real-time control, data acquisition, and embedded systems integration in industrial environments. The module combines onboard graphics, storage, and I/O connectivity with PCI-to-VMEbus bridging and optional carrier-module expansion.

Technical Specifications

• CPU: Intel 233 MHz Pentium Processor with MMX Technology


• L2 Cache: 512 KB synchronous, pipeline architecture


• DRAM: Up to 256 MB fast-page or EDO DRAM


• DRAM Slots: 72-pin SIMMs with ECC or parity support Graphics


• Controller: PCI Local Bus SVGA with 64-bit internal graphics engine


• Video RAM: 2 MB VRAM


• Max Resolution: 1280 × 1024, 256 colors


• Output: 15-pin D-shell connector (front panel)


• Hardware BitBLT acceleration for GUI operations Storage and I/O


• IDE Controller: PCI Enhanced IDE with DMA


• Floppy Drive Controller: Integrated


• Flash Disk: Optional, up to 72 MB


• Ethernet: Intel 82558, 10/100 Mbit, 32-bit PCI bus mastering, auto-sensing (10BaseT/100BaseTX)


• Serial: Two 16550-compatible high-speed ports


• Parallel: One EPP/ECP port


• USB: One port


• Keyboard/Mouse: PS/2 style ports VMEbus Interface


• PCI-to-VMEbus bridge with DMA


• Multiple VME master and slave image support


• Block transfer and DMA for data operations


• Configurable hardware byte-swapping logic Physical and Environmental


• Form Factor: Single-slot, double-high VMEbus module


• Connectors: P1 and P2 VMEbus backplane; front panel SVGA, RJ-45, USB, serial, parallel, PS/2


• Operating Temperature: 0 to 50°C with 100 cfm airflow


• Non-operating Temperature: −45 to 85°C


• Humidity: 5% to 95% at 60°C, non-condensing

Key Features

• 512 KB L2 pipeline cache for sustained instruction throughput


• Hardware graphics acceleration via 64-bit BitBLT engine


• Dual Ethernet (10/100 Mbit) for network-dependent real-time tasks


• PCI-based DMA for VME block transfers without CPU overhead


• Optional flash storage up to 72 MB

Compatibility & Integration The XVME-653 interfaces with Xycom Automation modular I/O carrier modules (XVME-976), which accept PMC, PC/104, short ISA, or PCI expansion modules. Power is supplied via the VMEbus backplane connectors.