The Abaco Systems/VMIC VMIVME-5588DMA-200 is a high-speed, direct memory access (DMA) fiber-optic reflective memory board engineered for VMEbus systems. It enables real-time, deterministic data sharing across up to 256 networked nodes with minimal latency. The reflective memory architecture automatically mirrors data written to one node across all connected nodes transparently to host processors, eliminating traditional I/O overhead.
– Technical Specifications
Serial Data Rate & Throughput:
• Serial data rate: 1.2 Gbaud
• Maximum data transfer rate (non-redundant): 29.5 Mbyte/s
• Maximum data transfer rate (redundant): 14.8 Mbyte/s
Network & Connectivity:
• Maximum supported nodes: 256 independent systems
• Single-mode fiber distance: up to 10,000 m (10 km)
• Multi-mode fiber distance: up to 305 m (1,000 feet)
• Twinax cable distance: up to 30 m
• Fiber optic connector: SC (single-mode)
Memory & Buffering:
• On-board SRAM/SDRAM: configurable 256 Kbyte to 16 Mbyte
• Transmit and Receive FIFOs optimize CPU and bus performance
Interrupts & Error Handling:
• Any node can generate interrupts to any other node or all nodes via single command
• Error detection supported
• Redundant transmission mode available for error suppression
Physical & Environmental:
• Form factor: single-slot 6U VMEbus board
• Operating temperature: 0 to 65 °C (forced air cooling required)
• Storage temperature: -40 to 85 °C
– Key Features
• Software-transparent reflective memory eliminates host processor involvement
• Supports A24:A32:D64:D32:D16:D8 memory access modes
• Deterministic, low-latency communication for industrial and embedded real-time systems
• Flexible node-to-node and broadcast interrupt capability
– Compatibility & Integration
Complies with VMEbus standards. Supported operating systems include Solaris, SGI IRIX (4.x, 6.x), VxWorks, DEC UNIX (4.x), and Windows NT with appropriate drivers.
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