Motorola AP-4 256 MByte Processor Module (01-W3839F-07A)

General Description

The AP-4 series from Motorola represents a family of high-performance VMEbus single-board computers. The 01-W3839F-07A variant is equipped with 256 MB of soldered SDRAM, providing ample memory for complex applications such as database management, large data buffers, and multi-threaded real-time control. It retains all core features of the AP-4 platform, including PowerPC processing, dual Ethernet, and PMC expansion.

Key Features

• Processor: PowerPC 750 (G3) or 7400 (G4), 400-600 MHz, with 256 KB L2 cache.

• Memory: 256 MB SDRAM (soldered), 32 MB Flash for boot firmware and application storage.

• VMEbus Interface: VME64x compliant, system controller capability, A32/A24/A16 addressing.

• Ethernet: Dual 10/100 Base-T ports (RJ45).

• Serial I/O: Two RS232/RS422 configurable serial ports.

• PMC Expansion: Single PMC slot (PCI Mezzanine Card) for I/O expansion.

• Additional I/O: 2x USB 1.1, IDE interface, parallel port.

• Real-Time Clock: Battery-backed with calendar.

• Watchdog Timer: Programmable hardware watchdog.

Technical Specifications

• Memory Bandwidth: 800 MB/s (peak).

• Power Consumption: < 22 W typical.

• Operating Temperature: 0°C to +55°C (standard).

• Storage Temperature: -40°C to +85°C.

• Humidity: 5% to 95% non-condensing.

• Form Factor: 6U VMEbus, single-slot.

• Dimensions: 233 x 160 mm.

• Compliance: VME64, VITA 1-1994.

Functional Description

The AP-4 module integrates a high-performance memory controller with ECC support for data integrity. The 256 MB memory configuration is ideal for applications requiring large look-up tables, extensive data logging, or complex real-time models. The module includes a PCI-to-VME bridge (Tundra Universe II) for high-throughput VMEbus transactions. Boot firmware (U-Boot) supports network boot, Flash boot, and boot from IDE devices. The module also features a programmable interrupt controller and DMA engines.

Applications

• Data acquisition systems with large data buffers.

• Telecommunications infrastructure (switching, signaling).

• Industrial robotics and motion control.

• Medical imaging and diagnostic systems.

• Military radar and signal processing.

Integration and Software

The module is supported by VxWorks, Linux, and QNX with BSPs available. The 256 MB memory configuration is fully addressable in 32-bit memory space. The PMC slot allows expansion with I/O modules such as high-speed serial, Gigabit Ethernet, or FPGA-based processing cards.

Certifications

• CE, FCC Class A.

• RoHS compliant.

• Designed for industrial environments per IEC 61000-6-2.

Note: This document provides technical information; refer to the Motorola AP-4 product manual for detailed specifications and installation guidelines.