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3. Key Technical Specifications
- Processor: PowerPC 604
- Processor speed: 300 MHz
- Memory: 32 MB ECC DRAM
- Flash memory: 5 MB
- PMC expansion: Two 32/64-bit PMC slots
- VME interface: A32/D32/BLT64 master/slave
- Ethernet: 10/100 Mb/s, auto-negotiate
- NVRAM: 8 KB with battery backup
- Serial port: One asynchronous debug port
- Power rails: +3.3 V, +5 V, ±12 V
- Form factor: Single VME slot
- Compatibility note: Verify exact suffix and board revision before installation
4. Product Introduction
The MOTOROLA MVME2306 is a VME processor module built around a 300 MHz PowerPC 604 CPU and 32 MB ECC DRAM. It is used in legacy VME systems that need a direct board replacement without changing the rack architecture.
This board is commonly sourced for industrial control, test equipment, and embedded systems where the software stack already depends on the MVME2300 family. The main buying trigger is exact match compatibility: memory size, PMC support, and VME signaling all need to align with the installed hardware.
- MVME2306
- MVME2306
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No boot response | Backplane power issue, poor seating, or failed board | ✅ High | Measure VME rails and reseat the board in the slot | Verify chassis power and connector contact first |
| Boots but no Ethernet link | Cabling issue, port config issue, or PHY fault | ✅ High | Check link LEDs and test with a known-good cable | Confirm switch and network settings before replacing |
| PMC device not detected | Card mismatch, bad seating, or power/config issue | ✅ High | Reseat the PMC card and inspect the slot power path | Verify PMC compatibility and installation order |
| Boot hangs early | Flash corruption, NVRAM fault, or firmware mismatch | ✅ High | Check console output and reset NVRAM if supported | Reflash or reinitialize settings before blaming hardware |
| Random resets under load | Power instability or thermal problem | ✅ High | Monitor supply voltage and chassis temperature | Check airflow, PSU headroom, and load before swap |
| Serial debug port silent | Wrong console settings or damaged port | ✅ Medium | Loop back the port and verify baud settings | Confirm firmware and port configuration first |
Contact technical support with photos of the board label, slot position, PMC cards, and any console logs if the issue is still unclear.
6. Frequently Asked Questions (FAQ)
Q: Is this a direct replacement for my MVME2306 board?
A: Usually yes if the part number, revision, and installed options match. On VME hardware, the board family is only half the story; the exact configuration matters too.
Q: What does the MVME2306 use for CPU and memory?
A: It uses a PowerPC 604 at 300 MHz with 32 MB ECC DRAM and 5 MB flash. Those are the key identifiers buyers check first.
Q: Can I hot-swap this board?
A: No. Power down first. VME CPU boards should be treated as service items, not live-swap parts, unless the system manual explicitly says otherwise.
Q: Why is it usually listed as surplus?
A: Because the MVME2306 belongs to a legacy VME platform and is no longer current production. That is normal for older industrial and embedded control boards.
Q: What usually fails on these boards?
A: More often it is power, flash, NVRAM, or configuration than the CPU itself. A board that looks dead is often just sitting in the wrong slot or running with a bad setup.
Q: What should I verify before ordering?
A: Match the exact board label, PMC slot requirements, VME backplane type, and any firmware dependencies. If the old board has custom settings, copy them before removal so you do not waste time at install.
