STV82x7
Table of Contents
Chapter 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1
STV82x7 Overview ..............................................................................................................8
1.1.1 Core Features ............................................................................................................................................8
1.1.2 Software Information .................................................................................................................................9
1.1.3 Device Input Modes ...................................................................................................................................9
1.1.4 Electrical Features ...................................................................................................................................10
1.2
1.3
Typical Applications ...........................................................................................................10
Pin Descriptions and Application Diagrams .......................................................................14
Chapter 2
System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Chapter 3
Digital Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Sound IF Signal ..................................................................................................................21
Demodulation .....................................................................................................................22
3.1
3.2
Chapter 4
Dedicated Digital Signal Processor (DSP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Back-end Processing .........................................................................................................24
Audio Processing ...............................................................................................................25
ST WideSurround ...............................................................................................................28
ST OmniSurround ..............................................................................................................28
Dolby Pro Logic II Decoder ................................................................................................28
4.1
4.2
4.3
4.4
4.5
4.6
Bass Management .............................................................................................................28
4.6.1 Bass Management Configuration 0 .........................................................................................................29
4.6.2 Bass Management Configuration 1 .........................................................................................................30
4.6.3 Bass Management Configuration 2 .........................................................................................................31
4.6.4 Bass Management Configuration 3 .........................................................................................................32
4.6.5 Bass Management Configuration 4 .........................................................................................................33
4.7
SRS WOW and TruSurround XT ......................................................................................33
4.7.1 SRS TruSurround ....................................................................................................................................33
4.7.2 SRS WOW ...............................................................................................................................................34
4.8
Smart Volume Control (SVC) .............................................................................................34
ST Dynamic Bass ..............................................................................................................35
5-Band Audio Equalizer .....................................................................................................35
Bass/Treble Control ...........................................................................................................35
Automatic Loudness Control ..............................................................................................36
Volume/Balance Control ....................................................................................................36
Soft Mute Control ...............................................................................................................37
4.9
4.10
4.11
4.12
4.13
4.14
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