STV8268FD View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV8268FD

Digital Audio Decoder/Processor for BTSC Television/Video Recorders

STMicroelectronics 

STV82x8

Table of Contents

Chapter 1

1.1

1.2

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

STV82x8 Overview ............................................................................................................ 13

1.1.1 Core Features ..........................................................................................................................................13

1.1.2 Software Information ...............................................................................................................................14

1.1.3 Electrical Features ...................................................................................................................................14

Typical Applications ........................................................................................................... 15

Chapter 2 System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Chapter 3

3.1

3.2

Digital Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Sound IF Signal .................................................................................................................. 19

Demodulation ..................................................................................................................... 19

Chapter 4

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

4.12

4.13

4.14

4.15

Dedicated Digital Signal Processor (DSP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Back-end Processing ......................................................................................................... 21

Audio Processing ............................................................................................................... 22

ST WideSurround ............................................................................................................... 24

ST OmniSurround .............................................................................................................. 25

Dolby Pro Logic II Decoder ................................................................................................ 25

Bass Management ............................................................................................................. 25

4.6.1 Bass Management Configuration 0 .........................................................................................................26

4.6.2 Bass Management Configuration 1 .........................................................................................................26

4.6.3 Bass Management Configuration 2 .........................................................................................................27

4.6.4 Bass Management Configuration 3 .........................................................................................................28

4.6.5 Bass Management Configuration 4 .........................................................................................................29

SRS WOW and TruSurround XT ...................................................................................... 29

4.7.1 SRS TruSurround ....................................................................................................................................29

4.7.2 SRS WOW ...............................................................................................................................................30

Smart Volume Control (SVC) ............................................................................................. 30

ST Dynamic Bass/ST Bass Enhancer ............................................................................... 31

5-Band Audio Equalizer ..................................................................................................... 31

Bass/Treble Control ........................................................................................................... 31

Automatic Loudness Control .............................................................................................. 32

Volume/Balance Control .................................................................................................... 32

Soft Mute Control ............................................................................................................... 33

Beeper ................................................................................................................................ 33

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