MOTOROLA MVME2400 series VME processor module

In order to fully unleash the potential of PMC and its own I/O, MVME2400 adopts the VME64 expansion (VME64x) connector. It replaces the traditional VME 3-row 96 pin connector with a 5-row 160 pin DIN connector, and adds two rows of pins, Z and D, on P1/J1 and P2/J2. This additional pin provides users with more I/O signal lines, especially enabling PMC I/O based on P2 connectors to be fully utilized. At the same time, the design maintains 100% backward compatibility, ensuring that MVME2400 can seamlessly integrate into existing 3-row VME chassis systems.

Storage and Reliability: Design for Continuous Operation

In addition to volatile main memory, MVME2400 provides a multi-level non-volatile storage solution. The board integrates 8MB flash memory and 1MB programmable storage space (via socket style EEPROM/Flash) for storing boot programs, operating systems, firmware, or critical applications. An independent 8KB NVRAM (non-volatile random access memory) supported by a replaceable battery is used to store system configuration parameters, event logs, and other critical data. Its data retention life is 50 years at 55 ° C, and the battery can last for 10 years under full load operation, ensuring the persistence of data after long-term power outages.

In terms of reliability indicators, the document provides mean time between failures (MTBF) data measured under accelerated stress environments, with an average of over 190000 hours, demonstrating its high reliability design foundation. In terms of environmental specifications, its working temperature range is 0 ° C to+55 ° C, which can adapt to most industrial environments; The storage temperature range is wider (-40 ° C to+70 ° C). The board complies with the UL 94V-0 flame retardant standard, and its electromagnetic compatibility (EMC) meets the relevant emission and immunity standards of FCC Class A, ICES-003 Class A, and the European CE mark, making it suitable for integration into large systems.

Rich onboard I/O and monitoring functions

As a complete single board computer, MVME2400 integrates rich standard I/O interfaces: a 10/100Mb/s adaptive Ethernet controller (DEC 21143) connected to the front panel through an RJ-45 interface for network debugging and communication. A 16550 compatible asynchronous serial port that supports speeds up to 115.2Kbps and is commonly used as a system console port. In terms of timing resources, it provides a 16 bit and four 32-bit programmable timers/counters, as well as a watchdog timer to ensure the stability of software operation.

The front panel design reflects humanization and maintainability, with reset and abort buttons, as well as four status indicator lights (fault, CPU running, PMC1 activity, PMC2 activity), making it easy for on-site engineers to quickly diagnose the status of the board.

Model configuration and ecosystem

The MVME2400 series offers a highly configurable model matrix, allowing users to choose based on processing power (233/350/450 MHz), memory capacity (32MB to 512MB), and front panel controller style (traditional Scanbe controller or IEEE 1101 standard controller with plug). This segmented product line ensures that users can purchase the most cost-effective configuration for specific applications.

Motorola also provides a complete ecosystem of peripheral accessories and software support. For example, the PMCSPAN series PCI expansion board can be directly connected to the MVME2400, providing additional PMC slots. In terms of software, it supports multiple real-time operating systems (RTOS) and kernels, and provides a comprehensive development tool suite, including board level support packages (BSP), debugging monitoring programs (such as PPC bugs), and detailed programming reference guides and diagnostic manuals.