STV82x6
Table of Contents
Chapter 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1
1.2
1.3
Overview ..............................................................................................................................5
Typical Applications
.........................................................................................................6
I/O Pin Description .............................................................................................................10
Chapter 2
Demodulator Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Digital Demodulator ............................................................................................................12
System Clock .....................................................................................................................16
2.1
2.2
Chapter 3
3.1
Audio Processor Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Main Features ....................................................................................................................17
Smart Volume Control (SVC) .............................................................................................18
ST WideSurround ...............................................................................................................19
5-Band Audio Equalizer .....................................................................................................19
Bass/Treble Control ...........................................................................................................19
Volume/Balance Control ....................................................................................................20
Automatic Loudness Control ..............................................................................................22
Subwoofer Control .............................................................................................................22
Beeper ................................................................................................................................22
SRS™ 3D Surround (STV8226/36 only) ............................................................................23
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
Chapter 4
Audio Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Input Audio Matrix ..............................................................................................................26
Output Audio Matrix ...........................................................................................................26
4.1
4.2
Chapter 5
Additional Controls and Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Interrupt Request ...............................................................................................................27
I²C Bus Expander ...............................................................................................................27
Stereo Flag .........................................................................................................................27
Headphone Detection ........................................................................................................27
5.1
5.2
5.3
5.4
Chapter 6
I²S Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2/97