Description
System Architecture & Operational Principle
The MOTOROLA MVME162-213 is a 6U VMEbus single board computer designed for industrial and embedded applications requiring reliable real-time processing. It serves as the computational core in VME-based systems, interfacing with field devices (sensors, actuators) and external networks (SCADA, DCS) via a combination of VME64 backplane communication and high-speed I/O ports.
Core Functional Blocks
The SBC is composed of four primary functional blocks, each optimized for industrial/embedded use:
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Processing Unit:
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CPU: 25–32 MHz MC68040 (with FPU) or MC68LC040 (without FPU) 32-bit microprocessor, featuring 8 KB cache and MMU for improved data processing speed.
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Memory: 4–16 MB parity-protected DRAM for reliable data storage, 512 KB battery-backed SRAM for non-volatile data retention, and 1 MB flash memory for firmware storage.
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Bus Interface:
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VME64: Compliant with VME64 standards, supporting A16/A24/A32 addressing and D8/D16/D32 data widths for seamless connectivity with VME-based I/O and system controllers.
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SCSI: Optional SCSI bus interface with DMA for high-speed data transfer to external storage devices.
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I/O Subsystem:
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Serial: 2x serial ports (EIA-232-D and EIA-232-D/EIA-530) for legacy device integration.
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IndustryPack: 2x IndustryPack ports for adding specialized functionality (e.g., A/D conversion, communication modules).
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Power & Cooling:
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Power Consumption: Operates on VME standard power supplies (+5V DC, ±12V DC).
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Cooling: Forced-air cooling recommended for reliable operation in harsh environments (-40°C to +85°C).
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Operational Workflow
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Power-Up: The SBC draws power from the VME backplane and initializes the firmware.
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Boot Process: The firmware configures the CPU, memory, and I/O interfaces, then boots the operating system (e.g., VxWorks, Linux).
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Task Execution: The MC68040 processor executes real-time control programs (e.g., signal processing, PID loops) and communicates with field devices via VME64 or serial ports.
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Data Transfer: High-speed data transfer between the SBC and VME backplane, while the SCSI interface handles data storage and retrieval.
Motorola MVME162-213
Core Technical Specifications
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Parameter
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Specification
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Processor
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25–32 MHz MC68040 (with FPU)/MC68LC040 (without FPU) 32-bit microprocessor
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Cache
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8 KB cache (on-chip)
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Memory
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4–16 MB parity-protected DRAM; 512 KB battery-backed SRAM; 1 MB flash memory
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VMEbus Interface
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VME64-compliant, A16/A24/A32 addressing, D8/D16/D32 data widths
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I/O Ports
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2x serial (EIA-232-D/EIA-530); 2x IndustryPack; 1x SCSI (optional)
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Operating Temperature
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-40°C to +85°C (extended range)
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Power Supply
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VME standard (+5V DC, ±12V DC)
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Form Factor
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6U VME (single slot)
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Weight
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~2 kg (estimated)
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Certifications
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CE, UL, MIL-STD-810F (vibration/shock)
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Customer Value & Operational Benefits
1. Reliable Real-Time Processing
The MC68040 processor and parity-protected DRAM enable the MVME162-213 to handle complex control algorithms (e.g., PID loops, motion control) and large datasets (e.g., from 100+ I/O channels). This is critical for applications like industrial automation (robotic control) and energy (turbine control).
2. Rugged Durability for Harsh Environments
The -40°C to +85°C operating temperature range and forced-air cooling make the SBC suitable for:
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Aerospace: Avionics systems (e.g., flight control computers).
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Defense: Naval sonar processing, armored vehicle control.
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Industrial: Oil & gas refineries, power generation (turbine control).
3. Flexible Expansion for Custom Applications
The IndustryPack ports and SCSI interface allow users to add custom functionality (e.g., A/D conversion modules for sensor data acquisition, communication cards for legacy device integration) without modifying the core SBC. This flexibility is ideal for prototype development and system upgrades.
4. Legacy System Compatibility
The MVME162-213 maintains pin-level and software continuity with older MVME series modules, enabling phased modernization projects without requiring a total system overhaul. Engineers can port proven real-time code or OS images with minimal modification, preserving certification and validation cycles.
Motorola MVME162-213
Field Engineer’s Notes (From the Trenches)
When installing the MVME162-213, always verify the VME backplane voltage (+5V DC, ±12V DC) with a multimeter before powering up—incorrect voltage can damage the SBC. I once saw a technician fry a board because he used a non-regulated power supply.Check the IndustryPack slot alignment before inserting expansion cards—misalignment can damage the slot pins. Use the guide rails on the chassis to ensure proper alignment.Test the serial ports (loopback test) after installation—use a serial cable to connect the TX and RX pins and verify data transmission. I’ve spent hours troubleshooting “no comms” faults only to find a bad serial cable.
Real-World Applications
1. Industrial Automation: Robotic Assembly Lines
A automotive manufacturer uses the MVME162-213 as the core of its robotic assembly line control system. The SBC’s MC68040 processor executes PID loops to adjust robot arm movements, while the IndustryPack ports add A/D conversion modules for sensor data acquisition. The -40°C to +85°C operating range ensures reliable operation in the factory floor environment.
2. Aerospace: Flight Simulation Systems
A defense contractor uses the MVME162-213 to power flight simulation systems for pilot training. The SBC’s VME64 interface connects to flight sensors (e.g., accelerometers, gyroscopes), while the serial ports stream data to the simulation software. The forced-air cooling ensures reliable operation during extended training sessions.
