The Emerson/Motorola MVME2400 is a 6U VME64 processor module built on the PowerPlus II architecture, delivering 32-bit PowerPC 750 performance up to 450 MHz for real-time control, data acquisition, and embedded communications in industrial environments. The module combines a PowerPC 750 core with 32 KB/32 KB L1 cache and 1 MB backside L2 cache, scalable SDRAM from 32 MB to 512 MB with ECC, and 8 MB flash memory. It integrates dual 32/64-bit PMC expansion slots supporting up to six PMCs via stacking, 10/100 Mb/s Ethernet, RS-232 debug serial, four 32-bit and one 16-bit programmable timers, a watchdog timer, and an on-board debug monitor with self-test diagnostics. The VME64 interface provides 4-level requester and 7-level interrupter/interrupt handler capability with full backward compatibility to existing VME systems. Two expansion connectors—one 64-bit PCI mezzanine and one for PMC front panel/P2 I/O—enable flexible peripheral integration. The 8K x 8 NVRAM with battery backup preserves critical data across power cycles.
## Technical Specifications
• **Processor:** PowerPC 750 32-bit, up to 450 MHz
• **Cache:** 32 KB/32 KB L1 (unified I/D), 1 MB backside L2
• **Memory:** 32–512 MB ECC SDRAM; 8 MB flash; 8K × 8 NVRAM with battery backup
• **VMEbus:** VME64 (IEEE STD 1014), 6U form factor, 4-level requester, 7-level interrupter
• **Expansion:** Two 32/64-bit PMC slots (IEEE P1386.1); 64-bit PCI mezzanine connector; PMC stacking to six modules
• **Ethernet:** 10/100 Mb/s
• **Serial:** RS-232 debug port
• **Timers:** Four 32-bit, one 16-bit, one watchdog
• **Power:** +12V and −12V (PMC-dependent); 3.93–4.5 A typical, 4.31–5.5 A maximum
• **Dimensions:** 233.4 mm H × 160.0 mm D × 19.8 mm W; front panel 261.8 mm; max component height 14.8 mm
• **PCB Rating:** UL 94V-0
## Key Features
• PMC-based expansion architecture supporting double-width and single-width modules
• On-board debug monitor with integrated self-test diagnostics
• Battery-backed NVRAM for persistent configuration storage
• 100% VME64 backward compatibility
• Dual-voltage rail design optimized for power efficiency across processor speeds
## Typical Applications
• Real-time industrial control and process automation
• Embedded data acquisition and telemetry systems
• VMEbus-based instrumentation and test platforms
• Military and aerospace avionics subsystems
## Compatibility & Integration
The MVME2400 integrates into existing VME64 crates via 100% backward-compatible connectors. Dual PMC slots accept IEEE P1386.1-compliant modules, and the 64-bit PCI expansion connector supports additional mezzanine card integration. On-board Ethernet and RS-232 provide standard network and serial connectivity for configuration and debug operations.
