STV3550 datasheet(2/144 Pages) STMICROELECTRONICS

2 / 144 page

2/144

STV3550

Chapter 1

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.1

Introduction .......................................................................................................................... 7

1.2

Software ............................................................................................................................... 8

1.3

Related Documentation ...................................................................................................... 10

1.3.1

General Introduction Manual ................................................................................................................10

1.3.2

User Guides ..........................................................................................................................................10

1.3.3

Reference Guide ..................................................................................................................................11

Chapter 2

STV3550 Pin List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

2.1

Pinout ................................................................................................................................ 12

2.2

Pin Description

.............................................................................................................. 13

2.3

Parallel I/O Pins and Alternate Functions .......................................................................... 19

Chapter 3

Video Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.1

Standard Definition Input (SDIN) ........................................................................................ 20

3.1.1

System Description ...............................................................................................................................20

3.2

Video Timebase Generator (VTG) ..................................................................................... 22

3.2.1

Synchronization Modes ........................................................................................................................22

3.2.2

Deinterlacing Modes and Progressive Scan Output .............................................................................22

3.2.3

Regulation Modes .................................................................................................................................23

3.3

Video Display Pipeline ....................................................................................................... 24

3.3.1

Main Features .......................................................................................................................................25

3.3.2

Horizontal and Vertical Rescaling ........................................................................................................25

3.3.3

Image Improvement ..............................................................................................................................27

3.3.4

Brightness Estimator ............................................................................................................................28

3.3.5

Histogram .............................................................................................................................................28

3.3.6

Contrast Enhancer ................................................................................................................................28

3.3.7

Spectral Processing ..............................................................................................................................35

3.3.8

Color Transient Improvement ...............................................................................................................36

Chapter 4

Graphics Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

4.1

On-Screen Display Generator (OSD) ................................................................................. 37

4.1.1

General Information ..............................................................................................................................37

4.1.2

Main Features .......................................................................................................................................37

4.1.3

Functional Description ..........................................................................................................................37

4.1.4

Programming OSD Display Regions ....................................................................................................38

4.1.5

Mixing OSD and Video Signals .............................................................................................................48

4.2

2D Graphics Accelerator .................................................................................................... 49

4.3

Graphic Application Examples ........................................................................................... 50

4.3.1

Teletext 1.5 ...........................................................................................................................................50

4.3.2

Teletext Level 2.5 ..................................................................................................................................51

4.3.3

TeleWeb ................................................................................................................................................51

4.4

Picture Compositor ............................................................................................................. 53

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