The Emerson/Motorola MVME177-003 is a single-height 6U VME single board computer built around the Motorola MC68060 microprocessor running at 50 MHz. This industrial-grade SBC combines a 32-bit VMEbus interface with integrated SCSI and Ethernet connectivity, delivering high-performance computing for embedded systems, process control, and automation environments. The board features configurable memory capacity up to 256 MB, on-board DMA controllers, and four serial ports, enabling complex real-time applications with minimal external hardware.
## Technical Specifications
**Processor & Cache**
• MC68060 microprocessor at 50 MHz
• 8 KB on-chip L1 I/D cache
• Integrated Memory Management Unit (MMU) and Floating-Point Unit (FPU)
**Memory**
• 16 MB ECC DRAM standard; configurable to 4, 8, 16, 32, 64, 128, or 256 MB via daughterboards
• Four-way interleaved with Error Checking and Correction
• 128 KB SRAM with battery backup
• 4 MB Flash ROM (mapped at $0–$3FFFFF)
• Two 44-pin sockets for up to 2 MB on-board ROM/EPROM
**VMEbus Interface**
• IEEE 1014 VMEbus standard with full 32-bit master/slave operation
• VMEchip2 ASIC controller with VME D64 support
• High-performance DMA supporting D64 and local bus memory burst cycles
**I/O & Connectivity**
• Four EIA-232-D serial ports; baud rates to 38.4 kbaud (async)
• 8-bit bidirectional parallel port (Centronics compatible)
• NCR 53C710 Fast-narrow SE SCSI controller with 32-bit local bus burst DMA; 10 Mbytes/s synchronous transfers
• Intel i82596CA 10 Mb Ethernet controller with 32-bit local bus DMA
• 8 KB NVRAM with real-time clock/calendar and battery backup
**Timers & Control**
• Four 32-bit timers and one watchdog timer
• Remote Reset/Abort/Status control functions
• Eight status LEDs (FAIL, STAT, RUN, SCON, LAN, +12V, SCSI, VME)
**Physical & Environmental**
• Single-height 6U form factor: 233.4 mm H × 160.0 mm D
• Operating temperature: 0°C to +55°C with forced air cooling (typically 100 CFM)
• Power consumption: less than 20 watts typical
## Key Features
• Configurable DRAM up to 256 MB for memory-intensive applications
• Dual communication interfaces (SCSI and Ethernet) for network and storage connectivity
• Four serial channels for multi-device control and monitoring
• Battery-backed NVRAM and SRAM for mission-critical data retention
• VMEchip2-based architecture for efficient local-to-VMEbus DMA operations
## Typical Applications
Industrial process control, data acquisition systems, real-time automation, embedded test equipment, and distributed control networks leveraging VMEbus architecture.
## Compatibility & Integration
Full compatibility with the M68000 family hardware and software ecosystem. VMEbus master/slave operation integrates into existing VME crates and controller systems. Supports standard VME peripheral modules and memory expansion via mezzanine modules.
