Eurotech Appliances CPU-1461 user manual Watch Dog Timer

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Chapter 5 Watch Dog Timer

This chapter explains how to use the Watch Dog timer.

You can also find information about how to use it through the System BIOS or directly by I/O mapped registers.

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Contents COPYRIGHT 1994-2005 Eurotech S.p.A. All Rights Reserved CPU-1461EmbeddedDNA User’s ManualPC/104-Plus - CPU-1461 Module Icon Environmental safetyConventions Important features orPage Connectors Description ContentsMultifunction Connector Section ContentsAppendix Chapter 5 Watch Dog TimerChapter 6 Troubleshooting Chapter 4 The Set-up ProgramChapter 1 Product Overview Architecture Product DefinitionBIOS Flash Power SupplyChapter 2 Jumper Description Type Jumper Layout and ConfigurationDefault Jumper #Chapter 3 Connectors Description J4J5 Connectors LayoutNote in figure 2, a red square pad indicates pin 1 of each connector J14 J16 J17Page CPU-1461 J4 for Multifunction and VGACarrier Module Multifunction Connector Section ƒ Speaker The Eurotech Multifunction Adapterƒ System reset ƒ External BatterySupported CRT-VGA Video Resolutions VGA SectionIDE/DOM J5 IDE ConnectorUSB J7 for USB 2.0 Ports 5 andAuxiliary J9 Auxiliary Power ConnectorPower Power button inputThe Eurotech USB & AC97-Audio Codec Adapter J14 for USB 1.1 Ports 7 and 8 and Audio-CODECSpkPhone IN/OUT To J14 CPU Board ConnectorAux IN CD IN Aux INJ16 for USB 2.0 Ports 1to J17 for SERIAL1 and SERIAL2 Ethernet J20 for EthernetTo CPU Board NetConnector The Eurotech Ethernet TransceiverRJ45 Connector Chapter 4 The Set-up Program Use the cursor arrow keys to move the highlight to other options Select “Quit” to exit from the Setup programPress the “ESC” key to return to the items of the Main menu The follow screen will be displayed General Page The Set-up pagesFloppy disks Quick BootTime DateBoot Try Sequence Devices PageFloppy Controller Network Primary and secondary EIDEVideo Controller AC97 ControllerSerial Ports 1 and Communications PageVP2000 and VT100 Parallel PortParallel Port Mode ATAPI unit type Primary and Secondary ATAPI PageHeads PIO ModeTranslation Mode CylindersDetect Now Advanced pageISA IRQ PCI Advanced PageLatency Time Devices ISA Bus Error Handling PageError on Fixed Disks Error on KeyboardError on Video Error on Floppy DisksPage This chapter explains how to use the Watch Dog timer Chapter 5 Watch Dog TimerHow to turn the Watch Dog ON What is a Watch Dog?How to use the Watch Dog Use the System BIOS INT 52h functionsHow to turn the Watch Dog OFF Directly accessing Watch Dog I/O mapped registersUse the following code to Enable Watch Dog Use following code to refresh the Watch Dog Chapter 6 Troubleshooting CPU Module doesn’t work Common Problems and SolutionsTroubleshooting a PC/104 System Technical/Sales Assistanceftp//ftp.eurotech.it Returning For ServicePage Company Name Page Appendix Backup Battery Characteristics A.1 Electrical and Environmental SpecificationsOperating Characteristics Electrical Operating CharacteristicsMTBF Mean Time Between Failures Absolute Maximum RatingsCPU-1461 Board dimensions A.2 Mechanical DimensionsThe CPU-1461 mechanical dimensions are shown in the following picture ¾ Dimensions 90 X 96 mm 3.6”X3.8”Ethernet Adapter Dimensions USB Audio Codec Dimensions12.0 A.3 Safety SummaryMultifunction Adapter Dimensions 62.0Do Not Operate in an Explosive Atmosphere Use Caution When Exposing or Handling the CRTObserve Dangerous Procedure Warnings Ground the InstrumentReliability Disclaimer of WarrantyLife Support Policy ATAPI GlossaryB BIOS A ATAC CELLULAR G GPS NTSC M MIDIMPEG N NDISSMBus R RAMS SCSI SECAMW WAN V VGAAcronyms and Abbreviations Page techsupp@eurotech.it Technical & Sales Assistanceftp//ftp.eurotech.it