Detailed Description of the 5565 Series Reflective Memory Card

Technical Specifications (Parameters are similar across 5565 interface products)

1. High-speed, easy-to-use fiber optic network with a fiber rate of 2.125G

2. Transmission process does not require CPU involvement

3. Supports ring and star topologies

4. 33MHz/66MHz 64-bit/32-bit compatible PCI bus, compatible with 3.3V and 5.0V levels

5. Network transmission does not require processor involvement

6. Optional redundant transmission mode

7. Supports up to 256 nodes

8. Multimode transmission distance up to 300 meters, single-mode up to 10KM

9. Automatically adjusts packet size from 4 to 64 bytes

10. Transmission rate up to 174MB/s

11. 256Mbytes onboard memory with error checking

12. Transmission latency of 0.4μs

13. Independent DMA channel

14. Supports network interrupts with 32-bit data

15. Endian conversion for different architectures within the same network

16. PIO window configurable from 2Mbytes, 16Mbytes to 64Mbytes, and up to onboard memory size

17. Standard PCI half-length card

18. Operating temperature 0~65°C, storage temperature -40~85°C

19. Operating system support: Windows, Linux, VxWorks, RTX, DOS, Linux, LabVIEW RT, RTX/RTX64 drivers, etc.

Features and Advantages of the 5565 Reflective Memory

Features:

(1) VMIC reflective memory is a technology that enables data transmission between interconnected computers via a local area network, increasingly adopted by real-time network designers. The concept of VMIC reflective memory real-time LAN is simple: design a network memory board to achieve memory-to-memory communication in distributed systems without software overhead. Each node machine is equipped with a reflective memory card featuring dual-port memory, accessible for both reading and writing by various software layers. When data is written to the memory of one machine's reflective memory card, it is automatically transmitted via fiber optics to the memory of other reflective memory cards on the network. Typically, within a few hundred nanoseconds, all reflective memory cards' memories are updated with the same content. Members access data by simply reading from their local reflective memory card's memory.
(2) The reflective memory card - Real-Time Simulation Technology Network, in collaboration with domestic universities and research institutes including the 8th Research Institute of CETC, the 5th Academy of Aerospace, Beihang University, Beijing Institute of Technology, Nanjing University of Science and Technology, Northwestern Polytechnical University, and Harbin Institute of Technology, has conducted a series of application research, testing, and evaluation of PMC5565. Particularly in hardware-in-the-loop real-time simulation systems, reflective memory cards have become standard. Their principles are easy to understand, usage is straightforward, they offer strong anti-interference capabilities, high real-time performance, support interrupt transmission and interrupts, require minimal software development code, have strong expansion capabilities, and numerous application cases. They shorten system development cycles, reduce personnel costs, enhance system robustness, and free software developers from complex communication protocols, eliminating concerns about bandwidth for large-scale data transfers and uncertain delays. Reflective memory cards are also used in industrial control sectors including rail transit, metallurgy, and power system simulation.

(3) With increasing chip integration, reflective memory cards have also improved in integration, offering stable and reliable performance with transmission distances up to 10KM (single-mode). In collaboration with the 8th Research Institute of CETC, we promote domestic research on real-time communication technology for reflective memory networks, offering reflective memory solutions based on PCI bus reflective memory cards with 128-512MB onboard memory, 2.5G transmission rates, compatibility with GE5565 series reflective memory cards, providing complete driver source code and application example code, along with on-site technical support. After extensive testing in some hardware-in-the-loop simulation systems, they are now in delivery. Future releases will include PMC interface and CPCI interface reflective memory cards, with options for customized development, integrating reflective memory modules into customer boards.

(4) Additionally, the reflective memory card - Real-Time Simulation Technology Network offers fault injection modules, signal processing modules, encoder interface modules, and adapter card products for use in hardware-in-the-loop simulation systems for user convenience. Detailed information is available on the website, and all products can be custom-developed.

Advantages:

(1) Capability to achieve remote interconnection

As simulation experiments increase in complexity, there is a need for remote interconnection of equipment across multiple buildings and laboratories. Single-mode fiber optics and fiber hubs connect distant laboratory equipment, with single-mode fiber supporting transmission distances up to 10km. For laboratories within 300m, multimode fiber enables close-range transmission, balancing performance and cost.

(2) Capability to conduct multiple experiments in parallel

In urgent testing scenarios, multiple experiments need to be conducted simultaneously. The integrated test control system can manage various hubs, segmenting the entire network into several isolated sub-networks, allowing parallel experimentation to meet the demands of multiple laboratories working concurrently.

(3) Capability to isolate and troubleshoot faults

The integrated test control system monitors the connection and operational status of devices at each hub port, enabling remote control and bypass of any node in the fiber optic network. During fault排查, nodes can be easily added or removed from the network, significantly improving troubleshooting efficiency and quickly isolating faulty nodes.