The Emerson/Motorola MVME147S-1 is a 6U VMEbus single board computer built on the Motorola MC68030 microprocessor, designed for real-time control, data acquisition, and communication in industrial systems. This double-high VME module integrates a 32-bit processor with on-chip instruction and data cache, floating-point coprocessor support, and comprehensive I/O interfaces including serial, parallel, SCSI, and Ethernet connectivity. The MVME147S-1 functions as both master and slave on the VMEbus, supporting A32/D32 and A24/D16 address/data configurations with full system controller capabilities.
## Technical Specifications
**Processor and Memory**
• Microprocessor: Motorola MC68030 enhanced 32-bit microprocessor with on-chip L1 cache (256B instruction / 256B data)
• Clock Speed: 25 MHz (standard configuration)
• Floating-Point Coprocessor: Motorola MC68882
• DRAM: 4 MB with parity
• Static RAM: 2 KB CMOS with battery backup
• ROM Sockets: Four sockets for ROM/PROM/EPROM/EEPROM (16 bits wide)
**VMEbus Interface**
• Standard: ANSI/VITA 1-1994 VME64 (IEEE STD 1014)
• Configuration: A32/D32 master/slave system controller with A24/D16 compatibility
• Request/Interrupt: 4-level requester, 7-level interrupt handler
• Controller Functions: Jumper-selectable system controller capability
**I/O and Connectivity**
• Serial Ports: Four RS-232C channels (8530 controller)
• Parallel Port: Centronics-compatible
• SCSI Interface: WD33C93B narrow SE SCSI bus controller with DMA
• Ethernet: AMD AM7990 Lance 10 Mb Ethernet MAC with Intel LXT901 Serial Interface Adapter
• Real-Time Clock: Battery-backed calendar (MK48T02 Non-Volatile RAM/clock)
• Timers: Two 16-bit tick timers, one watchdog timer
## Physical Specifications
• Form Factor: Double-high VME module (6U)
• Height: 233.35 mm (9.187 inches)
• Depth: 160.0 mm (6.299 inches)
• Width: 19.8 mm (0.8 inches)
• Operating Temperature: 0°C to 55°C
## Key Features
• 256B/256B on-chip cache memory for instruction and data
• VMEbus master/slave capability with selectable system controller function
• Four independent serial communication channels
• Narrow SCSI interface with dedicated DMA channel
• 10 Mb Ethernet MAC for network integration
• Battery-backed non-volatile clock/calendar and SRAM for mission-critical timing
## Typical Applications
Industrial automation controllers, energy management systems, transportation and vehicle control, real-time data acquisition platforms, distributed VMEbus system nodes.
