Mitsubishi Electronics WS-65513, WS-48613, WS-48513 Single-Link Tmds, Display Data Channel DDC

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Figure 10: Single-Link TMDS

Display Data Channel (DDC)

The VESA standard Display Data Channel, shown in Figure 10, is part of the DVI specification. It is an I2C bus used for data communications between the two devices. The data can include information specifying the type of display device connected and can also be used to support copy protection.

Extended Display Identification Data (EDID) EDID is the VESA standard protocol used over the DDC so the display device can communicate identi- fication about itself to the host device. The data, stored in memory in the display device, can include its resolution, sync timing and refresh rates, etc. It is part of the plug and play package.

Figure 11: HDCP

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Contents V23 Page 2003 Page Alignment Procedures Table of Contents Introduction ... New TechnologiesDisassembly and Service Power SupplySync, Deflection and High Voltage Troubleshooting TipsVideo/Color Circuitry Convergence CircuitryFeatures IntroductionFeatures NetCommand NetCommand IconsFormat Memory Card Reader Button FunctionPerfectColor CompatibilityMonitorLink Digital Visual Interface DVITransition Minimized Differential Signaling Tmds AcronymsSingle-Link Tmds Display Data Channel DDCHigh-bandwidth Digital Content Protection Hdcp Hot Plug Detect HPDMonitorLink DVI Connector DVI Input Block DiagramV23 Chassis DVI Input Block Diagram Service Menu Access Codes Chapter Disassembly and Service LightboxDM Replacement Main Chassis RemovalMain Chassis Removal PCB Locations Convergence IC Replacement PCB & Major Component LocationsV23+++ Cabinet Front Disassembly V23+++ Composite Cabinet BackOption Menu Initial Setup Chapter Alignment ProceduresInitial Setup Main Menu Default Settings Circuit Adjustment Mode Activating the Circuit Adjustment ModeNEW FEATURE… Service Mode Reset Selection of adjustment Functions Adjustment ItemsTerminating the Circuit Adjustment Mode Saving Adjustment DataConvergence Mode Functions Convergence Adjustment ModeActivating the HD mode when no HD signal is available Fine Convergence Mode Alignment Data Storage LocationsLow Energy Mode Activation Chapter Power SupplyLow Energy Mode Low Energy Standby RegulatorUser Setup Menu RegulationLow Energy Power Distribution Standard Standby Supply Start-upStandard Standby Supplies Time Shift Recording Power SuppliesStandby Power Distribution Time Shift Supply Power Distribution Switched Supplies Regulator Flashes-Stops-Flashes-Stops-etc TroubleshootingPower Distributions If the LED does not flash Page Chapter Control Circuitry Basic µPC RequirementsReset Circuitry Input Command Circuitry Page AC-OFF Input Serial Data LinesΜPC Parallel Inputs Short Detect RAY ProtectParallel Outputs BWC Band Width ControlFlash Circuit Chapter Video/Color Circuitry PCB-TERMINAL Video Path PCB-SIGNAL Video Path CRT Drive & Protect Circuitry Digital Signal Path Monitor Out Circuit Chapter Sync, Deflection & High Voltage Sync Signal Path VGAPage Page Vertical Deflection Horizontal DeflectionHorizontal Deflection DC Supply Circuitry Deflection Loss Detection HV & HV Regulation Ray Protect Page Convergence Circuitry Overall Block Diagram Chapter Convergence CircuitryWaveform Generator & D/A Converter Convergence Waveform Generator & D/A ConverterLPF & Summing Amps Low Pass Filter and Summing AmplifiersConvergence Output Circuitry Convergence Output CircuitryChapter Sound Circuitry DTV DVI VGAOverall Sound Circuitry Block Diagram Overall Sound Signal Path Digital Audio OutputPage Reading the Error Codes Chapter Troubleshooting TipsUsing The Front Panel LED CRT Phosphor Protection NetCommandTM Control ProblemsDM Module Check