Emerson / Motorola MVME2432-3 VME Processor Module

The Emerson/Motorola MVME2432-3 is a VMEbus processor module built on Motorola's PowerPC 750 architecture for industrial and embedded computing applications. This single-slot VME64 card delivers 350 MHz processing performance with 64 MB ECC SDRAM, 1 MB firmware flash, and 8 MB user flash. The module combines high-speed local bus operation at 100 MHz with integrated 10/100 Mb/s Ethernet, asynchronous serial debugging, and dual PMC expansion slots for flexible I/O customization. A Tundra Universe 2.0 PCI-to-VME bridge and W83C553 PCI-to-ISA bridge enable seamless integration into existing VME systems while supporting A16–A32 addressing, D08–D64 data paths, and block transfer operations.

Technical Specifications

Processor: Motorola PowerPC 750 at 350 MHz

L1 Cache: 32 KB instruction + 32 KB data

L2 Cache: 1 MB

Main Memory: 64 MB ECC SDRAM (expandable to 512 MB)

NVRAM: 8 KB with real-time clock (M48T559)

Firmware Flash: 1 MB

User Flash: 8 MB

Local Bus: 100 MHz operation

VME Interface: VME64 specification with A16–A32 addressing, D08–D64 data, block transfer support

PCI Bridge: Tundra Universe 2.0 controller

ISA Bridge: W83C553 controller

Ethernet: 10/100 Mb/s (10BaseT/100BaseTX via RJ-45)

Serial Port: One 16550-compatible asynchronous port (EIA-574 DTE configurable)

Debug Port: Serial debug interface (J2) plus CPU debug connector (J1)

Timers: Four 32-bit programmable timers, one 16-bit timer, watchdog timer with system reset

Key Features

Dual IEEE P1386.1 PMC expansion slots supporting front-panel and P2 I/O

PMCspan compatibility enabling expansion to six total PMC modules

Integrated real-time clock with NVRAM backup

PCI arbitration support for multi-master environments

Decoupled processor-to-PCI architecture minimizing latency

Typical Applications Industrial process control, embedded systems, VME-based instrumentation, real-time data acquisition, and distributed computing platforms requiring PowerPC processing within standardized form factors.

Compatibility & Integration Full VME64 compliance with standard A/D configurations and block transfer protocols. Supports industry-standard PCI mezzanine cards and ISA peripherals through onboard bridge controllers.