GE VMIC PCI-5565-010 Deterministic Real-Time Communication Interface

GE PCI-5565‑010 Reflective Memory Interface

The GE PCI-5565‑010, also cataloged as the PCI-5565 Reflective Memory Interface, operates as a dedicated hardware component for deterministic, real-time data sharing within distributed control and simulation networks. The card features a dedicated 128 MB onboard SDRAM array that duplicates incoming memory packets across a fiber-optic network at speeds up to 2.125 Gbps. By removing standard networking layer overhead, the hardware allows multiple independent nodes to execute unified read/write routines to a synchronized shared memory space.

Hardware Specifications

Deterministic Network Data Replication and Firmware Synchronization

The architecture executes data transmission via a dedicated serial fiber-optic interface, completely isolated from host operating system dependencies. When a local CPU executes a write command to the 128 MB SDRAM array, the onboard logic immediately packages the data into packets ranging from 4 to 64 bytes and transmits it into the ring or star topology network. The integrated networking controllers handle all packet formatting and routing independently, ensuring that I/O density scaling profiles remain decoupled from local CPU processing loads. Furthermore, the card maintains full firmware flash compatibility across Windows, Linux, and VxWorks platforms to secure consistent backplane bus communication velocity under varying network load demands.

Frequently Asked Questions

Q: What is the mechanical and electrical impact of adding a Reflective Memory Hub into the network loop?

A: Integrating an external Reflective Memory Hub converts a standard physical ring topology into a logical star configuration. The hub adds a predictable propagation delay but provides port isolation and automatic bypass mechanics if an individual node loses electrical power, maintaining network ring integrity without system-wide dropouts.

Q: How does the packet size variation affect the actual data transfer throughput of the module?

A: The onboard transmission logic optimizes data throughput based on data density. Small 4-byte packets incur higher relative protocol overhead, yielding a transfer rate of 43 MB/s, whereas larger 64-byte blocks leverage full network bandwidth to achieve a maximum transfer velocity of 170 MB/s while maintaining the same node-to-node latency.

Field Installation Guidelines

• Optical Interface Contamination Control: Clean all fiber-optic ferrules with a lint-free wipe before seating them into the onboard transceivers. Particulate buildup on the 2.125 Gbps transmitter or receiver interfaces can cause packet degradation, leading to continuous hardware CRC error flags.
• Fiber-Optic Bend Radius Limits: Do not allow the physical single-mode or multi-mode fiber patch cables to drop below a minimum bend radius of 30 mm. Exceeding this mechanical limit creates micro-bends that scatter the optical signal, reducing transmission distances.
• PCI Card Slot Seating and Grounding: Power down the host chassis completely before inserting the board into a 32-bit PCI slot. Fasten the metal faceplate retention screw firmly to the computer chassis frame to ensure a low-impedance ground path for transient shielding.
• Thermal Convection Requirements: Ensure neighboring expansion slots do not block ambient air passage across the onboard memory and transceiver logic chips. The board requires unrestricted convection currents to stabilize the 128 MB SDRAM during sustained full-load operation.