GE VMIVME-5576-210

Product Overview
The VMIVME-5576 is a 6U VMEbus board providing reflective memory (also called shared memory) over a fiber-optic network. Data written to local onboard SRAM is automatically and transparently replicated to all other nodes in the reflective memory ring — no CPU intervention required. Used for deterministic, low-latency data sharing in distributed control systems (turbine control, simulator rigs, synchronized data acquisition).
Category:
Description
Technical Specifications
  • Bus Interface:​ VMEbus (A24/A32:D32:D16:D8), 6U Eurocard form factor
  • Network Type:​ Fiber-optic serial link, 170 Mbaud
  • Max Nodes:​ 256 (node ID set by DIP switch/jumper)
  • Node Distance:​ Up to 2 km (multimode fiber, 62.5 µm); longer with single-mode
  • Data Rate:​ 6.2 MB/s (non-redundant), 3.2 MB/s (redundant mode)
  • Onboard Memory:​ 256 KB / 512 KB / 1 MB SRAM (configurable)
  • FIFO:​ 4 KB transmit FIFO
  • Optical Interface:​ ST connector, multimode (1300 nm typical)
  • Interrupts:​ Network-wide interrupt generation (point-to-point or broadcast), interrupt follows data
  • Power:​ +5 V DC, max ~5.0 A (inrush higher)
  • Operating Temp.:​ 0 °C to +55 °C (commercial); extended versions to –40 °C available
  • MTBF:​ >140,000 hours
Key Features
  • Software-transparent — appears as ordinary memory read/write to VME processor
  • Hardware-level data consistency across nodes
  • CRC error detection; optional redundant fiber ring
  • Ideal for synchronized turbine control and historical data logging across multiple processors
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