NT68520XF Datasheet, PDF (20/97 Pages) List of Unclassifed Manufacturers – XGA,SXGA Flat Panel Monitor Controller

Horizontal Total
Horizontal Sync End
Horizontal Sync Start
Horizontal Display End
NT68520X,E
ACTIVE DISPLAY SCREEN
VIDEO PROCESSOR
A video processor includes Interpolation Control, RGB Gain Control, RGB Offset Control,
Dithering Control, and Gamma Correction Control.
The NT68520’s enhanced interpolation method makes the zoomed display image look
smoother and more comfortable.
Users can adjust the RGB Gain (Contrast) and RGB Offset (Brightness) by the registers
in the ADCPLL block, or registers in the Video processor block. But for YUV video input,
it is suitable to adjust Contrast and Brightness here.
Dithering function can provide 16.7 million color spaces for the 6-bit/color panel. It is
recommended to open the dithering function when a 6-bit panel is used.
Sync Processor
The architecture of the sync processor is shown in the Sync Processor Block Diagram.
The functions of the modules include polarity detection, horizontal frequency counter,
vertical frequency counter, and polarity controllable HSYNCO and VSYNCO outputs. It
can accept various input sources, such as separate sync, composite sync, and
2003/4/15
20
Ver.1.0