Emerson / Motorola MVME147SA-1 MPU VME Module

The Emerson/Motorola MVME147SA-1 is a single-height 6U VME processor module built around the Motorola MC68030 CPU running at 25 MHz, paired with an MC68882 floating-point coprocessor at 25 MHz. This VME64-compliant board delivers 32-bit data path processing with up to 32-bit addressing capability, 8 MB of dual-ported parity DRAM, and 2 KB of NVRAM with real-time clock functionality. It integrates Ethernet (10 Mb), narrow SE SCSI, four asynchronous serial channels, an 8-bit bidirectional parallel port, and block transfer support via the VMEchip ASIC, which can serve as system controller with global timeout, arbitration, and interrupt acknowledge daisy-chaining. The board measures 233.4 mm (H) × 160.0 mm (D) × 19.8 mm (W) and supports multiple operating systems including VxWorks, LynxOS, pSOS+, OS-9, and BSD variants.

Technical Specifications Processor & Memory

CPU: Motorola MC68030 at 25 MHz

FPU: Motorola MC68882 at 25 MHz

RAM: 8 MB DRAM with parity

NVRAM: 2 KB SRAM or MK48T02 with clock

ROM: Four 32-pin JEDEC sockets for 1M × 8 EPROMs VMEbus Architecture

Standard: VMEbus ANSI/VITA 1-1994 VME64 (IEEE STD 1014)

Data path: 32-bit

Addressing: Up to 32-bit range

Master/Slave configuration with asynchronous variable-speed handshaking

Block transfer protocol supported

System Controller capable with global timeout timer, SYSCLK driver, Arbiter, IACK daisy-chain Connectivity

Ethernet: 10 Mb via AMD AM7990 Lance and Intel LXT901 SIA

SCSI: Narrow SE via WD33C93B controller with firmware jump table

Serial: Four asynchronous channels (8530 controller)

Parallel: 8-bit bidirectional (PCC ASIC)

P1 VME-I/O connector and P2-VME external I/O connector

Key Features

VMEchip ASIC for integrated bus control and system management

Programmable Channel Controller (PCC) for parallel I/O and peripheral control

General Control Chip (GCC) for on-board functions

Status monitoring via four LEDs (FAIL, STAT, RUN, SCON)

Operating System Support OpenBSD/mvme68k, NetBSD/mvme68k, Motorola System V/68 (releases 3–8), pSOS+, LynxOS, OS-9, VRTX-32, VxWorks

Typical Applications Real-time control, industrial data acquisition, embedded VME-based systems requiring multi-protocol connectivity and deterministic processing.