The Emerson/Motorola MVME101 is a VMEbus system controller module serving as a single-board computer for embedded real-time applications. Built on Motorola MC 680×0 architecture (M68000), it provides essential system control functions including clock generation, interrupt handling, memory management, and bus arbitration. The module occupies a single VME slot and implements core VMEbus protocols with A32:D32 support, making it the foundational control element in VMEbus-based embedded systems.
## Technical Specifications
• **Processor:** Motorola M68000 architecture
• **Bus Interface:** VMEbus (A32:D32)
• **Form Factor:** Single-slot VME, 6U Euro-card
• **System Control Functions:** Clock generation, seven-level interrupt handling with bus arbitration, memory management, bus arbitration
• **Parallel I/O:** 16 bi-directional lines
• **Serial Ports:** Two RS-232C channels via DB-25 connectors
• **Programmable Timers:** Three 16-bit counter/timers (off-board accessible)
• **Status Display:** Hexadecimal LED readout
• **VMEbus Arbiter:** Single-level arbiter for Level 3 bus requests
## Key Features
• Configurable interrupt vector selection via jumper settings
• Programmable ROM access timing with WAIT cycle control
• Flexible memory socket configuration (U52–U56, U61–U64)
• Selectable serial interface control logic
• Integrated system clock and interrupt distribution across all seven VMEbus interrupt levels
• Direct VMEbus backplane connectivity via standard J1/P1 and J2/P2 connectors
## Typical Applications
• VMEbus system controller and master arbitration
• Real-time embedded control systems
• Industrial automation and instrumentation platforms
• Data acquisition and signal processing systems requiring VMEbus architecture
## Compatibility & Integration
The MVME101 operates as the system controller within VMEbus architecture, supporting VMEbus specification standards. It manages bus arbitration, interrupt distribution, and memory operations across the backplane, enabling modular expansion with compatible VME peripherals and I/O modules.
