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Key Technical Specifications
| Parameter | Value |
| Manufacturer | Motorola (Embedded Systems Division) |
| Model Number | MVME 172-453 |
| Processor | MC68060 (typically 50 MHz or 66 MHz) |
| Memory (RAM) | 64 MB Dynamic RAM (DRAM) |
| Flash Memory | 4 MB (On-board) |
| I/O Interface | VME64 (Standard 6U) |
| Extension Slots | 4 IndustryPack (IP) interface slots |
| Ethernet | 10Base-T (AUI via transition module) |
| Serial Ports | 4 RS-232/RS-422 ports |
| Timer/Clock | Real-time clock with battery backup |
| Power Consumption | +5 VDC (Typical 15-20W depending on IP load) |
Product Introduction & Supply Chain Strategy
The Motorola MVME 172-453 is a powerhouse of the 68K-family VMEbus architecture, featuring the MC68060 microprocessor and an expansive 64 MB of RAM. This specific configuration is designed for data-intensive real-time computing where the modularity of IndustryPack (IP) slots is required for custom I/O. It is frequently found in flight simulators, large-scale industrial automation, and legacy defense systems.
From a strategic procurement perspective, the MVME 172-453 is a high-value legacy asset. As these modules age, the failure of custom ASICs or the degradation of memory cells becomes a primary risk. Purchasing this as “New Surplus” mitigates the high Total Cost of Ownership (TCO) associated with the short lifespans of refurbished units. For mission-critical systems, keeping a “New Surplus” spare on-site is an essential insurance policy against EOL (End of Life) stock-outs and the prohibitive expense of unplanned system migration.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
Perform a full Lock-Out/Tag-Out (LOTO) of the VME chassis. Use a grounded ESD wrist strap before unboxing the MVME 172-453. Document the existing configuration of any IndustryPack (IP) modules currently installed in the failing unit, as these must be migrated to the new board.
Stage 2: Removal
Unlock the top and bottom ejector handles. Carefully pivot the handles outward to disengage the board from the 96-pin DIN backplane connectors. Slide the module out along the card guides, ensuring no contact with adjacent cards.
Stage 3: Installation (Clone & Seat)
Carefully install IndustryPack modules into the four slots on the new MVME 172-453, ensuring all connectors are seated and screws are tightened. Match the jumper settings (specifically for VME system controller functions and VME address mapping) to the original board. Slide the new module into the chassis and push the handles inward until they click.
Stage 4: Power-On & Testing
Power the chassis and observe the self-test LEDs. The “FAIL” LED should turn off after successful initialization. Connect a serial console to the “Debug” port to verify the 172Bug (monitor) firmware recognizes the 64 MB of RAM and all connected IP modules.
- MVME 172-453
- MVME 172-453
Firmware/Software Versions & Upgrade Notes
- Monitor Firmware: The MVME 172-453 typically ships with the 172Bug monitor. Ensure the version matches your boot requirements, especially if using a specific RTOS like VxWorks or OS-9.
- IP Module Drivers: The 68060 processor handles I/O interrupts differently than earlier 68040 models. Ensure your software drivers are optimized for the MC68060 to avoid protocol timeouts.
- Memory Mapping: This model features 64 MB of DRAM. If you are replacing a 16 MB or 32 MB version, check your application’s memory map to ensure the software recognizes the additional overhead without causing address conflicts.
Frequently Asked Questions (FAQ)
What is the difference between this and the MVME 162 series?
The MVME 172 is the high-performance successor to the MVME 162. It utilizes the MC68060 processor instead of the MC68040, offering significantly higher clock speeds and more efficient instruction execution while remaining largely code-compatible.
Are the IndustryPack (IP) modules included?
No. The MVME 172-453 provides the carrier slots for IndustryPack modules, but the modules themselves (for Serial, Digital I/O, etc.) must be purchased separately or transferred from your old board.
Can I use this board as the VME System Controller?
Yes. The MVME 172-453 can be configured as the System Controller (Slot 1) via onboard jumpers. It provides the necessary system clock and bus arbitration logic for the entire VME rack.
Does “New Surplus” mean the battery is also new?
While the board is New Surplus (zero operating hours), the NVRAM battery may have aged while in storage. We recommend checking the battery voltage (typically a 3V lithium) and replacing it if the system fails to retain clock settings after power-down.
Is this module compatible with VME64 backplanes?
Yes, the MVME 172-453 is fully compatible with standard VME and VME64 backplanes, though it primarily utilizes the standard P1/P2 connector architecture.
