ADE3000 datasheet(5/88 Pages) STMICROELECTRONICS

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ADE3XXX

General Description

The ADE3XXX family of devices is capable of implementing all of the advanced features of today’s

LCD monitor products. For maximum flexibility, an external microcontroller (MCU) is used for

controlling the ADE3XXX and other monitor functions.

The ADE3XXX architecture unburdens the MCU from all data-intensive pixel manipulations,

providing an optimal blend of feature and code customization without incurring the cost of a 16-bit

processor or memory. The key interactions between the monitor MCU and the ADE3XXX can be

broken down into the features shown in the table below.

Figure 1: ADE3XXX Block Diagram

Table 1: ADE3xxx Features (Sheet 1 of 2)

Feature

Description of ADE3XXX Operation

Blocks Used

Pages

Power Up / Initialize When power is first applied, the ADE3XXX is asynchronously reset from a pin.

The MCU typically programs the ADE3XXX with a number of default values and

sets up the ADE3XXX to identify activity on any of the input pins. All

preconfigured values and RAMs, such as DVI settings, line-lock PLL settings,

video input modes (YUV), OSD characters, LCD timing values (output

sequencer), scale kernels, gamma curves, sRGB color warp, APC dithering,

output pin configuration (OMUX), etc. can be preloaded into the ADE3XXX. The

typical end state is that the ADE3XXX is initialized into a low power mode, ready

to turn active once the power button is pressed.

GLBL

SMEAS

DVI

LLK

ADC

YUV

OSD

SCALER

GAMMA

SRGB

OUTSEQ

TCON

APC

OMUX

Activity Detect

When the monitor has been powered on, the inputs can be monitored for active

video sources. Based on the activity monitors, the MCU chooses an input or

power down state.

SMEAS

YUV Port

Analog Port

DVI Port

Scaler with

SCLK

F. Synth

P. Gen

F. Synth

LLKPLL

DMEAS

SMEAS

INCLK

SCLK

DOTCLK

Color

Management

OSD

Gamma

LUT

DATA

CTRL

Vertical Keystone

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