Abaco Systems / Ramix PMC661 Ethernet Interface Card

The Abaco Systems / Ramix PMC661 is a PCI Mezzanine Card (PMC) that delivers 10/100 Mbit Ethernet connectivity for embedded systems. This interface card supports both 100Base-TX and 10Base-T standards with full-duplex operation across both speed modes. An integrated Ethernet/PCI engine with powerful DMA and deep FIFO buffers enables continuous full-bandwidth data transfer while minimizing PCI overhead.

Auto-negotiation automatically configures the link to the highest available operating mode and duplex setting.

Technical Specifications

• Form Factor: PCI Mezzanine Card (PMC), PCI Rev. 2.1 and IEEE 1386 compliant


• Data Rates: 10 Mbit/s and 100 Mbit/s


• Standards: 10Base-T and 100Base-TX


• Duplex: Full duplex at both 10 Mbit/s and 100 Mbit/s


• Auto-Negotiation: Automatic configuration to highest operating mode, bandwidth, and duplex settings Performance Architecture


• DMA Engine: Integrated for efficient packet transfer


• FIFO Buffers: Deep buffering for continuous data flow


• PCI Overhead: Minimized through engine design

Key Features

• Point-to-point direct cabling with crossover connection support for dedicated full-duplex 100 Mbit/s paths


• Hub and switch compatibility for scalable network topologies


• Single Micro Connector (PMC661) interface

Typical Applications The PMC661 targets embedded interconnects where real-time determinism is required, particularly in configurations using two cards with direct crossover cabling for dedicated bandwidth paths.

Compatibility & Integration Software Support

• Drivers available for VxWorks, pSOS, LynxOS, and Digital UNIX


• Integration with host OS LAN protocol stack


• User-accessible auto-negotiation control


• One OS license included per card System Integration


• Compatible with card edge PCI systems via appropriate adapters (GE Fanuc embedded systems)


• Suitable for systems requiring PMC mezzanine module deployment