Mitsubishi Electronics WS-48613, WS-65513, WS-48513, WS-55513 manual Sync Signal Path, Vga

Sync Signal Path

Figure 6-1illustrates 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 PCB-Signal via connector JA, pins 32 and 33, and then to the Dou- bler circuitry.

6-2