Motorola MVME167-34B VME Bus Single-board Computer

Motorola MVME167-34B VME bus single-board computer

1. Hardware specifications

1.1 Processor and Memory

Processor: PowerPC 604e, with a maximum main frequency of up to 266MHz (MVME167-34B model).

Memory:

System memory: Up to 256MB SDRAM (optional configuration).

Boot memory: 8MB Flash ROM, supporting online upgrade.

Battery backup SRAM: 512KB (optional), for storing critical data.

1.2 I/O interface

VMEbus: Supports the VME64 specification (VMEbus Rev.C.1), and the data transfer rate can reach up to 40MB/s at most.

Serial port: 2 RS-232/422/485 serial ports, supporting multiple baud rates (up to 115.2kbps).

Ethernet: 1 10/100Mbps adaptive Ethernet port (supporting TCP/IP protocol).

Timer: 3 independent timers for precise timing and interrupt control.

Interrupt controller: Supports 16 levels of interrupt priority.

1.3 Other Characteristics

Operating temperature: Standard type: 0°C to 60°C Extended type: -40°C to 85°C (optional).

Power supply: +5V DC (typical power consumption 20W), supporting redundant power input.

Size: Complies with the VME 6U standard (160mm × 233.35mm).

Weight: Approximately 1.5kg.

2. Software support

Real-time Operating System (RTOS)

VxWorks (Wind River Systems)

INtime (TenAsys)

pSOS (Integrated Systems)

Linux (Customized Version)

Development tools: Support development environments such as Wind River Workbench and GCC, and provide standard C/C++ programming interfaces.

Driver program: Provides low-level drivers for devices such as VME bus, serial port, and Ethernet.

3. How it works

MVME167-34B, as the core component of the VME bus system, operates in the following ways:

VME bus communication: Exchange data with other modules (such as I/O cards, communication cards) through the VME backplane, supporting master/slave mode.

Real-time data processing: The PowerPC processor efficiently handles real-time tasks, supporting multi-task scheduling and interrupt response.

Memory management: Virtual memory and memory protection are implemented by using a memory management unit (MMU).

Interrupt handling: Respond quickly to external events (such as I/O triggering, timer overflow) through the interrupt controller.

4. Application Scenarios

Industrial automation: Core control units used in PLC (Programmable Logic Controller) and DCS (Distributed Control System).

Aerospace: Real-time data processing for flight control systems and avionics equipment.

Military: Weapon system control, radar signal processing.

Communication: Protocol processing and flow control of telecommunication equipment.

Testing and Measurement: High-precision data acquisition and analysis system.

5. Technical advantages

High reliability: Utilizing industrial-grade components, it supports wide-temperature operation and has an MTBF (Mean Time Between Failures) of tens of thousands of hours.

Real-time performance: The PowerPC processor, in conjunction with RTOS, ensures microsecond-level task response times.

Scalability: Supports system expansion with up to 21 modules via the VME bus.

Long-term support: Emerson offers up to 15 years of product life cycle support, suitable for applications that require long-term stable operation.

6. Precautions

Compatibility: Before use, it is necessary to confirm the electrical and mechanical compatibility with the existing VME system.

Heat dissipation: When operating under high load, it is necessary to ensure good heat dissipation conditions (such as case fans or heat sinks).

Firmware upgrade: Regularly update the firmware to fix vulnerabilities and enhance performance, but operate with caution to avoid system crashes.

Summary

The MVME167-34B, with its high-performance PowerPC processor, rich I/O interfaces and highly reliable design, has become an ideal choice for critical real-time applications in the industrial and defense fields. Although it may not be as powerful as the new generation of processors in terms of processing capacity, it has significant advantages in stability, long-term support and adaptability to harsh environments.