ADE3700SX datasheet(6/89 Pages) STMICROELECTRONICS

6 / 89 page

ADE3700

6/89

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

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

DMUX

SMUX

SCALER

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 ADE3700 which 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

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

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

GAMMA

Adjustment

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

transformations.

GAMMA

sRGB Control

The SRGB block allows simple, intuitive color control with just a few registers.

SRGB

Pattern

Generation

For production testing, the ADE3700 can be programmed by the MCU to

output a wide set of test patterns.

PGEN

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

Backlight Control

The ADE3700 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

Low Power State

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

the analog blocks into a low power standby state.

GLBL

Table 1: ADE3700 Features (Sheet 2 of 2)

Feature

Description of ADE3700 Operation

Blocks Used

Pages

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