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VMIMB1-5576 - VMIC VMIMB1-5576 Multibus Fiber-Optic Reflective Memory with Interrupts | Multibus...

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Part Number:
VMIMB1-5576
Model Number:
VMIMB1-5576
Make:
VMIC
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VMIC VMIMB1-5576 Multibus Fiber-Optic Reflective Memory with Interrupts | Multibus | 175 Mega Baud Reflective Memory Simple Type: Reflective Memory Module

VME-5576 Reflective Memory interface allows data to be shared between up to 256 independent systems (nodes) at rates up to 6.2 Mbyte/s. Each Reflective Memory board may be configured with 256 Kbyte to 1 Mbyte of on-board SDRAM. The local SRAM provides fast Read access times to stored data. Writes are stored in local SDRAM and broadcast over a high-speed fiber-optic data path to other Reflective Memory nodes. The transfer of data between nodes is software transparent, so no I/O overhead is required. Transmit and Receive FIFOs buffer data during peak data rates to optimize CPU and bus performance to maintain high data throughput.

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Features

  • Also jumper configurable as a Reliance (Allen-Bradley) AutoMax Multibus-compatible board
  • ANSI/IEEE Standard 796-1983 Multibus I-compliant board
  • Any Node on the Network Can Generate an Interrupt in Any Other Node on the Network or in All Network Nodes
  • Byte or Word memory accesses
  • Data Transferred at 3.2 Mbyte/sec with Redundant Transfer
  • Data Transferred at 6.2 Mbyte/sec without Redundant Transfer
  • Data Written to Up to 2,000 m Between Nodes, Supports Up to 256 Nodes
  • Error Detection
  • High-Speed, Easy-to-Use Fiber-Optic Network (170 Mbits/sec)
  • Network compatible with the PCI version (VMIPCI-5576) and VMbus version (VMIVME-5576)
  • No Processor Involvement in the Operation of the Network
  • No Processor Overhead
  • Redundant Transmission Mode for Suppressing Errors
  • Supports Optional Automatic Fiber-Optic Bypass Switch (VMIVME-5599)
  • Up to 1 Mbyte of Reflective Memory

Specifications

    General
  • Access Time: 400 ns (worst-case arbitration), 200 ns (best-case arbitration)
  • Cable Length: 2,000 m maximum between nodes
  • Cable Requirements: Two fiber-optic cables
  • Configuration: Daisy chain ring up to 256 nodes
  • Memory Size: 256 Kbyte, 512 Kbyte, or 1 Mbyte
  • MTBF: 142,400 hours (217F)
  • Transfer Rate: 6.2 Mbyte/s (longword accesses) without redundant transfer 3.2 Mbyte/s (longword accesses) with redundant transfer
  • VMEbus: This product complies with the VMEbus

 

Applications

  • None Available

Aliases

  • None Available