Model Interpretation

MVME：Motorola VME single-board computer product family

5500：High-end PowerPC74xx generation VME controller coding; suffix digits such as -0163 stand for customized memory/flash configuration version。

Technical Specifications

Processor & Cache

CPU：MPC7455/MPC7457 PowerPC, main frequency 1.0GHz~1.3GHz, embedded AltiVec floating-point coprocessor for high-speed algorithm operation

Cache：512KB on-chip L2 cache, optional 2MB external L3 cache

Memory & Onboard Storage

SDRAM：ECC DDR SDRAM, onboard standard 512MB, expandable to max 2GB via memory mezzanine card, 133MHz memory bus

Flash：Dual bank onboard soldered Flash (8MB+32MB standard), optional up to 512MB Flash, solidified MOTLoad boot firmware

Electrical & Environmental Rating

Input power：+5V from VME backplane bus, typical power consumption 22W

Operation temperature：0℃~+55℃ (forced air cooling); Storage：-40℃~+85℃

Humidity：5%~95%RH non-condensing; anti-vibration 1G 5~100Hz, comply CE/UL/FCC Class A EMC certification

Interface & Communication Configuration

Front Panel Onboard Ports

1×RJ45 Gigabit Ethernet (10/100/1000Mbps)

1×RJ45 10/100BASE-TX Fast Ethernet

2×DB9 RS232/422 asynchronous serial debug ports

Backplane & Expansion Bus

VME Bus：VME64 compliant via P1/P2 edge connectors, Universe-II VME bridge chip, 64-bit VME data transmission

Dual independent 64-bit PCI 33/66MHz buses, 2×PMC expansion slots (IEEE1386.1 standard), each PMC supports front/rear P2 routing I/O; reserved PrPMC processor mezzanine expansion interface, expandable SCSI, multi-serial, analog acquisition via PMC cards

Auxiliary Circuit

Built-in watchdog timer, hardware EEPROM for system parameter storage, general-purpose GPIO pins configurable as interrupt input; onboard MOTLoad bootloader for POST diagnosis, system initialization and OS boot management

Core Functions

Real-time operating system supporting: VxWorks, Embedded Linux, LynxOS, pSOS; MOTLoad firmware realizes power-on self-test, hardware diagnosis, program download and boot configuration

Dual independent PCI+PMC expansion architecture, flexible extension of fieldbus (CAN/Profibus), data acquisition and communication functions without occupying extra VME slots

Complete VME master/slave arbitration function, works as system VME bus controller for multi-card VME rack synchronous control

Hardware fault self-diagnosis via front panel RUN/FAULT/COM LED indicators, watchdog automatic reset upon system crash

Applicable Scenarios

Railway vehicle traction control, aerospace ground test bench, nuclear power auxiliary DCS system, ship-borne automation equipment, large industrial high-speed data acquisition system, military radar signal processing unit

Operation & Maintenance Instruction

Before PMC card hot swapping, cut off chassis power supply to avoid PCI bus voltage surge damaging onboard chip

Configure front/rear I/O routing via onboard jumper caps (J102~J110); jumper 1-2 for front panel IO, jumper 2-3 for P2 rear transition board IO

Regularly clean chassis air duct and board surface dust to prevent overheating under long-time full-load operation

Modify VME interrupt vector within 0xC0~0xFF range during driver development to match MVME5500 VME controller interrupt specification

Store system mirror into onboard Flash via MOTLoad command for offline startup after power failure