STV3550 datasheet(11/144 Pages) STMICROELECTRONICS

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General Information

STV3550

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➢ The Video Service provides the client with a high-level interface for managing the Video.

This service is responsible for the complete management of the video buffers and the

video display, according to client configuration, in terms of the video mode (Up-conversion,

Proscan...).

It also offers video-related features, such as zoom or freeze frame, among others.

➢ The Synchronization Service is responsible for programming the field polarity. It provides

the client with a high level interface for managing the Field Polarity sequences.

3. CTV100-LCD: STV3550 Source Selection User Guide

➢ The Audio/Video Switch service is responsible for managing the connections between

audio and video inputs and outputs by using drivers that provide audio/video switching

functions.

The Audio/Video Switch component is also responsible for detecting changes in the Slow

Blanking Level (available on SCART connections) by using the ADC driver.

➢ The Front End service is responsible for the tuning and the scanning operations. It

provides the client with a high level interface working in the frequency domain.

4. CTV100-LCD: STV3550 Graphics User Guide

➢ It provides the necessary software for creating cursors and graphic planes using

respectively the Cursor Driver (DV_GAM) and the On-Screen Display Driver (STOSD).

➢ It also includes the Two Dimensional Block Move Driver (DV_BME) in order to improve

graphical applications which often require moving blocks of data.

This document will describe the CTV100-LCD Basic Graphics Stack and also provide a

guide for the implementation and configuration of a graphical user interface (GUI) stack

based on the OSD.

1.3.3

Reference Guide

There is one reference guide for each component (service, driver, etc.). This document includes the

API as well as an Example of Use. This document specifically targets design engineers.

STV3550 数据表(PDF) 11 Page - STMicroelectronics