VMIC VMIPCI-5565-11 Reflective Memory Interface Card

Module Feature

VMIPCI-5565-11 is a full-size PCI bus reflective memory node card developed by VMIC, belonging to the 5565 reflective memory product family, interoperable with VMIVME-5565 and VMIPMC-5565 series modules. It adopts 64-bit PCI bus compatible with 3.3 V / 5 V signaling, supporting 33 MHz and 66 MHz PCI clock. Onboard high-speed SDRAM acts as shared reflective memory, available in 128 MB / 256 MB memory configurations. Fiber interface runs at 2.12 Gbaud serial rate, forming a deterministic ring network; multimode fiber supports transmission distance up to 300 m, single-mode fiber extends up to 10 km. A single fiber ring network can accommodate maximum 256 independent nodes. When local host writes data to onboard memory, hardware automatically replicates data to all other nodes on the ring with minimal software overhead. Dynamic packet size ranges from 4 byte to 64 byte. Dual independent DMA channels realize high-speed block data transmission, reducing host CPU load. Programmable network interrupt function allows any node to trigger interrupt signals on remote nodes. Built-in CRC error detection and BIT diagnostic circuit continuously monitor fiber link quality and data integrity, latching fault status in register. The board supports node bypass function to maintain network operation when single node fails. Widely used in gas/steam turbine distributed control, hardware-in-loop real-time simulation, aerospace test and high-reliability industrial real-time data sharing systems.

Working principle

From the local host perspective, the onboard memory of VMIPCI-5565-11 appears as ordinary physical memory space. Once the host writes data into this memory region, the reflective memory controller captures the write action, packages data and broadcasts it over fiber ring to every other node hardware. Remote node hardware automatically updates its local shared memory copy. No TCP/IP protocol stack is required; data replication is completed by dedicated hardware, delivering ultra-low and deterministic latency. Interrupt message channel enables event notification between distributed nodes. BIT logic checks optical signal and CRC value to judge link and data health. PCI bridge completes bus address decoding, PIO and DMA data handshake between host and reflective memory controller.

Onboard components

PCI interface controller,reflective memory ASIC,2.12 Gbaud fiber transceiver module,128/256 MB SDRAM array,dual DMA controller,CRC error detection circuit,programmable interrupt logic,node bypass relay,nonvolatile configuration EEPROM,SC fiber optical port,PCI edge connector,multi-status LED array.

LED indicators

Front panel LED indicators for board power, fiber link status, network activity and communication fault alarm.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;board ID register readback verification;onboard memory read/write test;fiber link continuity check;CRC error injection test;DMA transfer verification;PCI bus PIO read/write communication test.

Programming software

VMIC reflective memory driver library and configuration utility,supports VxWorks,Linux,QNX and Windows operating systems;software tool for memory mapping,node ID assignment,interrupt setup and fault log reading.

Electrical & Process Parameters

Model: VMIPCI-5565-11 Brand: VMIC Device type: Full-size PCI fiber optic reflective memory node card Bus standard: 64 bit PCI,3.3 V / 5 V compatible,33 / 66 MHz Fiber speed: 2.12 Gbaud Onboard memory: 128 MB / 256 MB SDRAM Max network nodes: 256 Fiber distance: Multimode fiber up to 300 m;Single-mode fiber up to 10 km Control mode: Hardware automatic memory replication,dual DMA channels,network interrupt,BIT error monitoring,node bypass Power supply: +3.3 V / +5 V from PCI slot Power consumption: 8–12 W typical Cooling: Convection cooling Protection: CRC data error detection,node bypass protection,ESD protection Mounting: Standard full-height PCI slot installation Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Full-size PCI card Protection class: PCB with optional conformal coating

Environmental

Operating temperature: 0℃ ~ +65℃ (forced air cooling) Storage temperature: -40℃ ~ +85℃ Ambient humidity: 20~80% non-condensing Certification: CE compliant Status: VMIC PCI fiber reflective memory interface card

Installation

Follow ESD safety procedure before handling.Power off industrial host PC.Insert VMIPCI-5565-11 into available full-height PCI slot and fasten bracket.Connect duplex fiber cable to SC port to build ring topology.Power on host,install VMIC RFM driver,assign unique node ID and run BIT fiber diagnostic before commissioning.

Interface

PCI edge connector,front-panel duplex SC fiber port,network interrupt register pins,fault status signal pins.

Diagnostic

Board undetected: PCI slot fault,incorrect BIOS PCI resource allocation or hardware card damage. Fiber link down: damaged fiber cable,wrong TX/RX wiring or optical transceiver failure. Cross-node data inconsistency: duplicate node ID or ring breakage. DMA transfer failure: PCI bus resource conflict or DMA controller fault.

Product Brief

VMIC VMIPCI-5565-11 full size PCI fiber reflective memory card,with 2.12 Gbaud fiber ring,hardware-driven deterministic shared memory replication and node bypass function,for multi-node distributed real-time control and hardware-in-loop simulation systems.