Philips 150E6 user manual Device

Page 21

Glossary

A hub consists of two portions: the Hub Controller and Hub Repeater. The repeater is a protocol- controlled switch between the upstream port and downstream ports. It also has hardware support for reset and suspend/resume signaling. The controller provides the interface registers to allow communication to/from the host. Hub specific status and control commands permit the host to configure a hub and to monitor and control its ports.

Device

A logical or physical entity that performs a function. The actual entity described depends on the context of the reference. At the lowest level, device may refer to a single hardware component, as in a memory device. At a higher level, it may refer to a collection of hardware components that perform a particular function, such as a Universal Serial Bus interface device. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical.

Downstream

The direction of data flow from the host or away from the host. A downstream port is the port on a hub electrically farthest from the host that generates downstream data traffic from the hub. Downstream ports receive upstream data traffic.

Upstream

The direction of data flow towards the host. An upstream port is the port on a device electrically closest to the host that generates upstream data traffic from the hub. Upstream ports receive downstream data traffic.

file:///D/My%20Documents/dfu/150E6FB/ENGLISH/150e6/glossary/glossary.htm (4 of 5)2005-05-27 9:26:33 AM

Image 21
Contents Philips LCD Monitor Electronic User’s Manual Safety precautions and maintenance Safety and Troubleshooting InformationService Notational Descriptions About This GuideReturn to TOP Technical Specifications Product FeaturesProduct Information 150E6Video Automatic Power Saving Resolution & Preset ModesPin Assignment Physical SpecificationsPhysical Function Product ViewsTilt Front View Product Description Installing Your LCD MonitorOptimizing Performance On-Screen Display Description of the On Screen DisplayOSD Tree Return to TOP Page Customer Care & Warranty Glossary Energy Star Computers Programme USB or Universal Serial Bus Device Vertical refresh rate Download and Print Installing FPadjust Program Page General FAQs FAQs Frequently Asked QuestionsFAQs Frequently Asked Questions Screen Adjustments Compatibility with other Peripherals LCD Panel Technology What are the advantages of TFT LCD compared with CRT? Return to TOP Ergonomics, Ecology and Safety Standards Imaging Problems Common ProblemsTroubleshooting Return to TOP Recycling Information for Customers Regulatory InformationEnd-of-Life Disposal Energy Star DeclarationEarthed Information for UK onlyReturn to TOP Information for Users outside the U.S Information for Users in the U. SPhilips Flat Panel Monitors Pixel Defect Policy Philips Pixel Defect PolicyProximity of Pixel Defects Black DOT Defects Acceptable Level Connecting to Your PC Accessory PackConnecting to Your PC Return to TOP Unfold and Fold the Base Unfold the Base BaseRemove the Base Condition Return to TOP For Windows Me For WindowsFor Windows XP Dialog box Your Philips F1rst Choice WarrantyCanada/USA Before Requesting Service To GET Warranty Service in Canada Just a phone call away Your International Guarantee Page Bulgaria BelarusCzech Republic CroatiaHungary EstoniaLatvia LithuaniaSlovenia SlovakiaPoland RussiaAntilles UkraineArgentina BrasilMexico ColombiaParaguay PeruVenezuela UruguayCanada AustraliaBangladesh NEW ZealandChina Hong KongIndonesia IndiaMalaysia KoreaPakistan PhilippinesTaiwan SingaporeThailand MoroccoDubai South AfricaF1rst Choice Contact Information