MTL001 Просмотр технического описания (PDF) - Myson Century Inc

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производитель

MTL001

XGA Flat Panel Controller

Myson Century Inc 

MYSON

TECHNOLOGY

MTL001

(Rev. 0.95)

3.3 Output Processor

General Description

Output processor provides the interface for both LCD panel and OSD controller. MTL001 can work for frame-

buffer or non-frame-buffer mode. When in frame-buffer mode, there is no restriction between the timing of

input and output. When in non-frame-butter mode, output frame rate must be equal to input frame rate and

output display time must be equal to input display time due to the absence of frame buffer. Some features

based on using the frame buffer do not work in non-frame-buffer mode, for example the screen write, static

mode in de-interlace etc.

3.3.1 Display Timing Generation

There are three display timing modes:

¨ Frame-buffer Mode: is used for frame rate conversion. External frame buffer is needed.

¨ Non-frame-buffer Mode: performs a low cost version of solution where the external frame buffer is not

needed. This mode is used in the condition that output frame rate is equal to input frame; some features

are disabled in this mode.

¨ Frame SYNC Mode: is used for video input. In this mode, output frame is synchronized to input frame,

gives the moving picture a smooth change.

Frame Buffer Mode:

Input Frame

Output Frame

External Frame Buffer

Non Frame Buffer Mode

Input Frame

x

Lock point

Output Frame

Frame SYNC Mode

Input Frame

x

Lock point

Output Frame

Revision 0.95

External Frame Buffer

Fig. 3.2.3 Display Timing modes

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2000/06/14

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