STV8267 datasheet(3/156 Pages) STMICROELECTRONICS

Part #	STV8267

Description	Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STV82x7

Table of Contents

Chapter 1

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.1

STV82x7 Overview .............................................................................................................. 9

1.1.1

Core Features ............................................................................................................................................9

1.1.2

Software Information ...............................................................................................................................10

1.1.3

Device Input Modes .................................................................................................................................10

1.1.4

Electrical Features ...................................................................................................................................11

1.2

Typical Applications ........................................................................................................... 11

1.3

Pin Descriptions and Application Diagrams ....................................................................... 15

Chapter 2

System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Chapter 3

Digital Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

3.1

Sound IF Signal .................................................................................................................. 22

3.2

Demodulation ..................................................................................................................... 23

Chapter 4

Dedicated Digital Signal Processor (DSP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4.1

Back-end Processing .........................................................................................................25

4.2

Audio Processing ............................................................................................................... 26

4.3

ST WideSurround ............................................................................................................... 30

4.4

ST OmniSurround .............................................................................................................. 30

4.5

Dolby Pro Logic II Decoder ................................................................................................ 30

4.6

Bass Management .............................................................................................................30

4.6.1

Bass Management Configuration 0 .........................................................................................................31

4.6.2

Bass Management Configuration 1 .........................................................................................................32

4.6.3

Bass Management Configuration 2 .........................................................................................................33

4.6.4

Bass Management Configuration 3 .........................................................................................................34

4.6.5

Bass Management Configuration 4 .........................................................................................................35

4.7

SRS WOW and TruSurround XT ...................................................................................... 35

4.7.1

SRS TruSurround ....................................................................................................................................35

4.7.2

SRS WOW ...............................................................................................................................................36

4.8

Smart Volume Control (SVC) ............................................................................................. 36

4.9

ST Dynamic Bass .............................................................................................................. 37

4.10

5-Band Audio Equalizer .....................................................................................................37

4.11

Bass/Treble Control ........................................................................................................... 37

4.12

Automatic Loudness Control .............................................................................................. 38

4.13

Volume/Balance Control .................................................................................................... 38

4.14

Soft Mute Control ............................................................................................................... 39

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