Acromag / Xembedded / Xycom XVME-661 VMEbus Pentium III Low-Power Processor Module

The XVME-661 is a 6U VMEbus processor module built around an Intel Pentium III low-power processor operating at 700 MHz with a 100 MHz frontside bus and 256 KB L2 cache. Designed for industrial embedded computing, real-time control, and data acquisition in demanding environments, this module combines CPU performance with integrated graphics, dual Ethernet controllers, and flexible I/O expansion via a single PMC site.

Technical Specifications

• Intel Pentium III low-power processor


• CPU Speed: 700 MHz


• Frontside Bus: 100 MHz


• L2 Cache: 256 KB on-chip Memory


• SDRAM: Up to 256 MB


• Configuration: One 144-pin SODIMM Graphics Controller


• 64-bit AGP graphics controller with 4 MB SDRAM


• Maximum resolution: 1600×1200 at 64K colors or 1280×1024 at 16 million colors


• Video output: 15-pin D shell front panel connector VMEbus Interface


• Tundra Universe IID PCI-to-VMEbus bridge


• IEEE 1014 compliant


• Multiple VME master and slave images with block transfer and DMA capability


• Programmable hardware byte-swapping Storage


• IDE CompactFlash Type I/II site


• Optional hard drive/floppy via XVME-977 or hard drive/CD via XVME-979 Networking


• Dual Intel 82559ER 10 Base-T/100 Base-TX Ethernet controllers


• 32-bit PCI bus mastering, up to 100 Mbps per port


• Autosensed transfer rate with front panel LED indication I/O Expansion


• One 32-bit PMC site with electrical isolation


• Serial, parallel, USB, and keyboard/mouse ports via optional XVME-974 breakout module


• PCI EIDE support

Key Features

• Low-power Pentium III processor minimizes thermal load in VME backplane applications


• Tundra bridge architecture enables block data transfers


• Integrated dual Ethernet for network-centric embedded systems


• Flexible PMC expansion without requiring external carrier boards


• Optional I/O carrier modules extend functionality to USB, serial, parallel, and storage interfaces

Typical Applications

• Real-time industrial control systems


• VMEbus-based data acquisition platforms


• Embedded computing in harsh field environments


• Network-connected instrumentation and monitoring

Compatibility & Integration The XVME-661 integrates with standard VMEbus backplanes and supports optional expansion modules including the XVME-976 I/O carrier (PMC, PC/104, PCI, short ISA compatibility), XVME-977 storage module, and XVME-979 CD drive module.