The Abaco Systems PMC676TX is a dual-port Gigabit Ethernet controller in single-slot PMC form factor, delivering two independent 10/100/1000Base-TX ports with RJ-45 connectors for embedded systems requiring high-performance network I/O. Each port features a dedicated DMA engine and 64 Kbyte FIFO buffer, enabling continuous full-bandwidth operation with minimal PCI overhead and deterministic behavior. The Intel 82546 MAC controller supports auto-negotiation, MDI/MDIX switch-over, jumbo frames, and full-duplex operation on both channels.

Technical Specifications

Ethernet Interface
• 2 × 10/100/1000Base-TX ports with RJ-45 connectors
• Front-panel port routing
• Intel 82546 controller/MAC
• Auto-negotiation for speed and duplex
• MDI/MDIX switch-over capable
• Jumbo frame support
• Full-duplex operation per port

PCI Bus Interface
• PCI-X and PCI 64/66 MHz specification
• 32/64-bit width, 33/66 MHz speed
• Dual DMA engine (one per port)
• 64 Kbyte FIFO buffer per port
• 3 V and 5 V signaling support

Power Consumption
• Total: 6 W
• 3.3 V @ 0.9 A
• 5 V @ 0.6 A

Environmental
• Operating: 0 to +60 °C, 5% to 95% RH (non-condensing)
• Storage: −40 to +85 °C, 5% to 95% RH (non-condensing)
• Conformal coating options: acrylic or polyurethane

– Key Features

• 16 exact-match address filters for unicast/multicast
• 4096-bit hash filter for multicast frames
• Promiscuous unicast and multicast modes
• Hardware TCP checksum offloading
• Packet filtering based on checksum errors
• SNMP and RMON statistic counters
• MTBF: 245,000 hours (MIL-217-F Nav Shelf 25 °C)

– Compatibility & Integration

• OS support: Windows, Linux, VxWorks, LynxOS, Solaris
• Solaris OBP and PXE boot options
• Compatible with GE Fanuc Embedded Systems PMC239 adapter for card-edge PCI systems