Sync Signal Path
Figure 6-1 illustrates the Sync Signal Path for the Main Picture signals on the PCB-Terminal. IC2K00, IC2A00, IC2B00 and IC2A95 comprise the Main Picture Sync Select Circuitry. Sync must be extracted from NTSC, Composite and Component Format Y Signals. NTSC and Composite signals are 480i scan- ning format. Component signals can be 480i, 480p or 1080i.
IC2F00, the Main NTSC Decoder, extracts horizon- tal and vertical sync when the source signal is com- posite or component video.
IC2A95 selects the already seperate vertical and hori- zontal sync from the 5-wire sources.
•DTV (when the source is 5-wire)
•VGA
•DVI (decoded from the digital signal)
•DM (also decoded from a digital signal)
The selected sync is directed to the