STV2310 datasheet(6/112 Pages) STMICROELECTRONICS

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General Description

STV2310

6/112

General Description

The STV2310 is a high-quality video front-end circuit for processing all analog standards into a

digitalized 4:2:2 YCrCb video format. It processes NTSC/PAL/SECAM CVBS signals, as well as

conventional analog RGB or YCrCb signals.

This circuit outputs demodulated chrominance, in-phased luminance and sliced Vertical Blanking

Interval (VBI) data for the most common services such as Teletext, Closed Caption, WSS, VPS,

Gemstar.

The STV2310 does not need an external synchronization system. It extracts all necessary

synchronization signals from CVBS or Y signals, and delivers the horizontal, vertical and frame

signals either on dedicated pins or embedded into the digital bit stream.

It features automatic standard recognition and automatic selection of the optimal Y/C separation

algorithm according to the standard and has extensive output scaling capabilities. The STV2310

chip includes an analog RGB capture feature and programmable automatic mixing with the main

picture digital output.

8-bit ITU-R BT.601/656 and Square Pixel output standards are supported.

The STV2310 provides a cost-effective solution for digitized TV, LCD TV/monitors, digital TV, STB,

video surveillance/security, video conferencing, video capturing devices and PC video card.

It can be used as a stand-alone chip working with third-party products, as a companion chip to the

TV processor STV3500, STV3600 for digitized 100-Hz/ProScan CRT TVs, or as a companion chip

to the TV processor STV3550 for LCD-TVs.

All sub-level blocks operate at the frequency used as a sampling frequency (fS) for the five

embedded A/D converters. This free-running clock is called the system clock (fS) and is provided

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