The Abaco Systems VMIVME-5588DMA-410 is a high-speed DMA fiber-optic reflective memory board for VMEbus systems that enables real-time data sharing across distributed nodes. This single-slot 6U board implements a reflective memory architecture where data written to one node automatically mirrors across all connected nodes, eliminating software overhead and I/O latency. The on-board DMA controller and interrupt support deliver the throughput and responsiveness demanded by data acquisition and processing applications.
– Technical Specifications
Reflective Memory Network:
• Serial data rate: 1.2 Gbaud
• Maximum node capacity: 256 independent systems
• Data transfer rate: 29.5 Mbyte/s (standard mode) or 14.8 Mbyte/s (redundant transfer mode)
• Fiber-optic reach: 1,000 ft (multimode), 10 km (single-mode), 30 m (twinax cable)
• Redundant transmission error probability: 1.64 × 10⁻²⁰ per transfer cycle
• Any-to-any interrupt generation with single command execution
On-Board Memory and DMA:
• Configurable SDRAM: 256 Kbyte to 16 Mbyte
• Direct memory access (DMA) controller with transmit/receive FIFOs
• VMEbus address mapping: A24:A32:D64:D32:D16:D8
– Key Features
• Software-transparent data transfer—no processor involvement in network operation
• Zero processor overhead for reflective memory updates
• Error detection with configurable redundant transmission mode
• Transmit and receive FIFO buffering optimizes CPU and bus performance during peak data rates
• Node identification via jumper-selectable address (0–255)
• Optional fiber-optic bypass switches (passive VMIVME-5599 or active VMIVME-5591/-5593)
– Typical Applications
Real-time distributed data acquisition, multi-node system synchronization, high-speed inter-processor communication, aerospace and defense telemetry systems.
– Compatibility & Integration
VMEbus single-slot 6U form factor. Supports multimode/single-mode fiber converters for extended range deployment.
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