Motorola PrPMC800/800ET Processor PMC Module, PRPMC800A/IH5 manual Measuring Junction Temperature

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B Thermal Validation

Measuring Junction Temperature

Some components have an on-chip thermal measuring device such as a thermal diode. For instructions on measuring temperatures using the on-board device, refer to the PrPMC800/800ET Programmer’s Reference Guide and to the component manufacturer’s documentation listed in Appendix C, Related Documentation.

Measuring Case Temperature

Measure the case temperature at the center of the top of the component. Make sure there is good thermal contact between the thermocouple junction and the component. We recommend you use a thermally conductive adhesive such as Loctite 384.

If components are covered by mechanical parts such as heatsinks, you will need to machine these parts to route the thermocouple wire. Make sure that the thermocouple junction contacts only the electrical component. Also make sure that heatsinks lay flat on electrical components. The following figure shows one method of machining a heatsink base to provide a thermocouple routing path.

Note Machining a heatsink base reduces the contact area between the heatsink and the electrical component. You can partially compensate for this effect by filling the machined areas with thermal grease. The grease should not contact the thermocouple junction.

Measuring Local Air Temperature

Measure local component ambient temperature by placing the thermocouple downstream of the component. This method is conservative since it includes heating of the air by the component. The following figure illustrates one method of mounting the thermocouple.

Tape thermocouple wire to top of component

Thermocouple junction

Air flow

PWB

Figure B-3. Measuring Local Air Temperature

PrPMC800/800ET Processor PMC Module Installation and Use (PrPMC800A/IH5)

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Contents Installation and Use Page Keep Away From Live Circuits Inside the Equipment Use Caution When Exposing or Handling a CRTGround the Instrument Do Not Operate in an Explosive AtmosphereFlammability Limited and Restricted Rights Legend Page Contents Connector Pin Assignments Modifying the Environment Contents List of Figures List of Figures List of Tables J2 Harrier Power-Up Configuration Header Pin AssignmentsList of Tables 2MB PrPMC800/800ET Models/ConfigurationsAbout This Manual 1MBAbout This Manual PRPMC800A/IH2 PRPMC800A/IH5PRPMC800A/IH4 PRPMC800A/IH3Overview of Contents Conventions Used in This Manual About This Manual PrPMC800/800ET Description Preparation and InstallationIntroduction System Enclosure Monarch and Non-Monarch PrPMCsCarrier Board Requirements What you need to do Refer to Overview of Start-Up ProceduresStart-Up Overview Preparing the Hardware PrPMC800/800ET ConfigurationUnpacking the Hardware Jumper On Jumper Off Harrier Power-Up Configuration HeaderJ2 Harrier Power-Up Configuration Header Pin Assignments PrPMC800/800ET Headers, Connectors and Components Installation of PrPMC800/800ET on a VME or CompactPCI Board InstallationESD Precautions Installing a PrPMC800/800ET on a VMEmodule Operating Instructions Applying PowerOperating Instructions Status IndicatorsPrPMC800/800ET Debug Debug Serial PortEthernet Port Adapter Cable Page Functional Description FeaturesPrPMC800/800ET Features Feature DescriptionSrom General DescriptionPrPMC800/800ET Block Diagram Block DiagramHarrier System Memory Controller / PCI Host Bridge Asic ProcessorL2 Cache Option Power Register Bit Bus Signal Setting Harrier Power-Up ConfigurationHarrier Power-Up Configuration Settings Harrier Select Default Function DescriptionXCSR.XPAT0.DW XCSR.GCSR.PUSTXAD M66ENXCSR.XPAT2.DW ArbitrationFlash Memory XCSR.XPAT1.DWOnboard Sdram ECC MemoryOnboard Bank a Flash Optional Bank B FlashMiscellaneous Control and Status TimersBit Timers 10BaseT/100BaseTX Ethernet ChannelClock Generator Watchdog TimersInterrupt Routing and Generation Asynchronous Serial PortReset Source Type Module Reset PrPMC Resetoutl Active PrPMC800/800ET Power SuppliesModule Reset Logic Reset Source FunctionsPCI Interface PrPMC800/800ET Reset Block DiagramIDSELB, REQB#, and GNTB# Signals PRESENT# SignalMONARCH# Signal INTA#-INTD# SignalsDebug Header Eready SignalPCI Signaling Voltage Level ABORT# and RESET# SignalsMemory Maps Page PMC Connector P11 Pin Assignments Connector Pin AssignmentsPCI Mezzanine Card PMC Connectors GND VIO SDONE# SBO# PAR GND VIOPMC Connector P12 Pin Assignments PAR64 PMC Connector P13 Pin AssignmentsP14 PMC Connector P14 Pin AssignmentsSignal Description for P14 TXP TXN RXP RXN Lanterma Lantermb Ethernet Adapter ConnectorJ3 Ethernet Adapter Connector Pin Assignments J1 Debug Header Pin AssignmentsRsvd Signal Description for J1Shunt On Shunt Off PrPMC Cable-001 Termination Cputrstl Pullup Cputck Cputms Sresetl Cpurstl Ckstpol GNDDebug Serial Port Cable PPCBug Basics PPCBugOverview PPCBug Implementation Memory RequirementsMPU, Hardware, and Firmware Initialization Using PPCBug Command Description Debugger CommandsDebugger Commands IOC GevinitGevshow IdleNopa PbootReset NpingTest Group Description Diagnostic TestsDiagnostic Test Groups Mpic IsabrdgeL2CACHE MaskPage Modifying the Environment Cnfg Configure Board Information BlockENV Set Environment Configuring the PPCBug ParametersSelect the identifier. Default = Default = $00 Auto Boot Abort Delay = 7? Default Starting Address is $00000000 ROM First Access Length 0 31 = 10? Serial Startup Code Master Enable Y/N=N? Electrical Characteristics SpecificationsSpecifications Mechanical CharacteristicsEMC Compliance Environmental CharacteristicsCharacteristics Specifications Thermally Significant Components Thermal ValidationThermal Validation Table B-1. Thermally Significant ComponentsFigure B-1. Thermally Significant Components Primary Side Preparation Component Temperature MeasurementMeasuring Local Air Temperature Measuring Junction TemperatureMeasuring Case Temperature Figure B-4. Mounting a Thermocouple Under a Heatsink Table C-1. Embedded Communications Computing Documents Related DocumentationEmbedded Communications Computing Documents Table C-2. Manufacturers’ Documents Manufacturers’ DocumentsDocument Title and Source Publication Number Related SpecificationsTable C-3. Related Specifications Page CPU IndexFail LED IndexIDSELB, REQB#, GNTB# 25 INTA#-INTD# Xix

PRPMC800A/IH5, PrPMC800/800ET Processor PMC Module specifications

The Motorola PrPMC800/800ET Processor PMC Module, specifically the PRPMC800A/IH5 variant, represents a significant advancement in embedded processing technology. Often utilized in telecommunications, aerospace, and defense applications, this PMC module is designed to provide robust performance in demanding environments, making it suitable for high-speed data processing and communication tasks.

At the core of the PrPMC800 module is the PowerPC 750 architecture, known for its efficiency and power management capabilities. This 32-bit RISC processor is clocked at speeds reaching up to 800 MHz, allowing it to handle complex computations and multitasking scenarios effectively. The processor architecture supports a variety of software environments, including real-time operating systems and VxWorks, which enhances its adaptability across diverse applications.

One of the standout features of the PRPMC800A/IH5 module is its memory capacity. The module supports up to 1 GB of SDRAM, offering ample space for processing large datasets and executing multiple applications simultaneously. Furthermore, the integrated PCI bus facilitates high-speed connectivity with other modules and components in the system, ensuring rapid data transfer rates essential for real-time processing tasks.

An important characteristic of the PrPMC800 module is its thermal and environmental resilience. Designed with military-grade standards, it operates reliably in extreme conditions, including high temperatures and vibrations. This makes it particularly suitable for rugged applications where standard commercial-grade processors may fail.

The module also incorporates advanced I/O capabilities, featuring dual Gigabit Ethernet ports which enhance networking performance. Additional serial ports and interrupt handling further improve the module's versatility, allowing it to interface seamlessly with various peripheral devices and systems.

In summary, the Motorola PrPMC800/800ET Processor PMC Module, represented by the PRPMC800A/IH5 model, is an exemplary solution for applications requiring high performance, reliability, and adaptability. With its powerful PowerPC architecture, generous memory capacity, robust I/O capabilities, and proven ruggedness, this processor module stands out as a preferred choice for engineers and developers working in critical industries.
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