VMIC PCI-5576-001 Reflective Memory Board

Module Feature

PCI-5576-001 is a full-height PCI bus fiber-optic reflective memory node board developed by VMIC (Abaco Systems,formerly GE Intelligent Platforms). It is compatible with VMIC 5576 /5504 /5588 reflective memory series,supports interconnection between PCI, VME and other industrial bus nodes to build high-speed shared memory network. Onboard memory capacity configurable from 256 KB up to 1 MB SDRAM. Serial fiber baud rate reaches 170 Mbaud;the effective throughput hits 6.2 Mbyte/s under non-redundant mode and 3.2 Mbyte/s with redundant transmission enabled. Daisy-chain fiber topology supports maximum 256 nodes on one ring,inter-node distance up to 2000 m using multimode fiber. It supports cross-node interrupt function,one node can send interrupt signal to any single node or all nodes on network. Built-in dual TX/RX FIFO buffers reduce CPU load during burst data transmission. Hardware CRC error detection ensures data integrity without occupying host CPU resources. Powered directly from PCI slot,standard full-height PCI bracket for industrial PC chassis installation. Rugged PCB with conformal coating,shock and vibration screened for harsh industrial environments,widely used in gas/steam turbine distributed control network,aerospace multi-chassis hardware-in-loop simulation and defense ground test bench.

Working principle

When PCI host writes data to local reflective memory,the onboard RFM controller automatically broadcasts data over fiber to all other nodes on ring network. Every node updates its local memory copy synchronously;the whole data sharing process is transparent to application software. Dual FIFO buffers cache transmit/receive data to avoid overflow under peak traffic. Cross-node interrupt logic delivers event trigger signal through fiber channel. BIT circuit monitors fiber link status,memory health and CRC error count;status register can be read by host software. PCI FPGA completes PCI bus address decoding and bidirectional data handshake between host and local memory bank. Fiber transceiver module isolates electrical signals and suppresses ground loop noise.

Onboard components

PCI interface FPGA,reflective memory controller,256K~1M SDRAM bank,dual TX/RX FIFO array,170 Mbaud fiber optical transceiver,hardware CRC checker,cross-node interrupt logic,PCI gold finger edge connector,front panel dual fiber ST connectors,multi-status LED array.

LED indicators

Front panel LED indicators for fiber link lock and network fault alarm.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;board ID register readback verification;onboard SDRAM full read/write test;fiber loopback communication verification;CRC error counting test;PCI bus resource communication test.

Programming software

VMIC reflective memory driver library and configuration utility,supports VxWorks,Linux and QNX real-time operating systems;software tool for memory mapping,node interrupt setup and fault log retrieval.

Electrical & Process Parameters

Model: PCI-5576-001 Brand: VMIC Device type: Full-height PCI bus fiber optic reflective memory module Bus standard: 32 bit /33 MHz PCI Onboard Memory: 256 KB ~ 1 MB SDRAM Fiber speed:170 Mbaud Throughput:6.2 Mbyte/s(non-redundant),3.2 Mbyte/s(redundant) Max nodes:256 per ring Max fiber distance:2000 m multimode fiber Control mode: PCI bus powered,hardware memory broadcast,cross-node interrupt,hardware CRC,BIT link monitoring,galvanic fiber isolation Power supply: Powered by PCI slot Power consumption: 6 W typical Cooling: Convection cooling Protection: Hardware CRC error detection,ESD protection,optical over-power protection Mounting: Standard full-height PCI bracket installation Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Standard full-height PCI board Protection class: PCB with optional conformal coating

Environmental

Operating temperature:0℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE compliant Status: VMIC PCI fiber reflective memory node board

Installation

Follow ESD safety procedure before handling.Fully power off industrial PC.Insert PCI-5576-001 into vacant PCI slot and fasten bracket screw.Connect duplex ST fiber cables to build daisy-chain RFM ring network.Assign unique node ID for each RFM board.Power on industrial PC,load VMIC RFM driver,run BIT fiber link diagnostic before commissioning.

Interface

PCI gold finger edge connector,front-panel duplex ST fiber connector,interrupt and fault status register pins.

Diagnostic

Board undetected: PCI slot gold finger contamination,BIOS resource conflict or board hardware fault. Fiber link loss: dirty fiber end face,wrong fiber type or transceiver damage. Continuous CRC error: excessive fiber length or poor shielding causing signal distortion. Cross-node interrupt failure: interrupt register misconfiguration or link instability.

Product Brief

VMIC PCI-5576-001 full-height PCI fiber reflective memory board,170 Mbaud ST fiber interface with hardware CRC and cross-node interrupt,supports PCI-VME mixed multi-node ring network for turbine distributed control and aerospace hardware-in-loop real-time simulation systems.