NT68520 Просмотр технического описания (PDF) - Unspecified

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NT68520

XGA, SXGA Flat Panel Monitor Controller

Unspecified 

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

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