ADE3800SXT datasheet(8/138 Pages) STMICROELECTRONICS

部件名	ADE3800SXT

功能描述	Analog LCD Display Engine for XGA and SXGA Resolutions with Embedded LVDS and RSDS Transmitters

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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8 / 138 page

General Description

ADE3800

8/138

Sync / Timing

Measurement

Once an input source is selected, all available information on frequencies and

line/pixel counts is measured for the selected source and made available to the

MCU.

SMEAS

36

Mode Set

Once the MCU has determined the matching video mode or calculated a video

mode using a GTF algorithm, the datapath is programmed to drive the flat

panel. Clock frequencies for the internal memory and datapath are also set at

this time.

GLBL

LLK

SRT

SMUX

SCALER

18

30

33

43

53

Autotune

When the MCU calls for an autotune, the MCU sets up an iterative loop to

search for the best phase, gain, offset, etc. At each step of the loop, the MCU

kicks off a test in which the ADE3800 performs extensive statistical analysis of

the incoming data stream. The results of the analysis are made available to the

MCU which is responsible for the optimization algorithm.

DMEAS

LLK

ADC

SMUX

SRT

47

30

21

43

33

Digital Contrast /

Brightness

In response to user OSD control, the MCU can program single 8-bit registers

that set brightness and contrast for each color channel independently.

SRGB

68

White Point Control In response to user OSD control, the MCU can program three 8-bit registers

that set the white point for the output.

SRGB

68

GAMMA

Adjustment

The MCU can program the gamma RAMs to implement 10-bit accurate color

transformations to match the panel color characteristics.

GAMMA

71

sRGB Control

Allows simple, intuitive color control for parametric gamma correction and 3D

color cube warping.

SRGB

68

Pattern Generation

For production testing, the ADE3800 can be programmed by the MCU to output

a wide set of test patterns.

PGEN

59

Flicker Reduction

For Smart Panel applications, the MCU can set up the flicker detection block to

report any correlation with the polarity inversion signal. The MCU can then

change the polarity inversion to a non-correlating pattern to eliminate flicker.

FLICKER

TCON

88

102

Backlight Control

The ADE3800 provides two PWM outputs for direct control of the power

components in a typical backlight. The MCU sets up the registers and enables

the function.

PWM

119

Low Power State

To enter a low power state, the MCU can gate off most of the clocks and put the

analog blocks into a low power standby state.

GLBL

18

Table 1: ADE3800 Features (Sheet 2 of 2)

Feature

Description of ADE3800 Operation

Blocks Used

Pages

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