STV82X6 datasheet(2/95 Pages) STMICROELECTRONICS

2 / 95 page

STV82x6

2/95

Table of Contents

Chapter 1

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.1

Overview .............................................................................................................................. 5

1.2

Typical Applications

......................................................................................................... 5

1.3

I/O Pin Description ............................................................................................................... 8

Chapter 2

Demodulator Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

2.1

Digital Demodulator ............................................................................................................ 10

2.2

System Clock ..................................................................................................................... 14

Chapter 3

Audio Processor Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

3.1

Main Features .................................................................................................................... 15

3.2

Smart Volume Control (SVC) ............................................................................................. 16

3.3

ST WideSurround ............................................................................................................... 17

3.4

5-Band Audio Equalizer ..................................................................................................... 17

3.5

Bass/Treble Control ........................................................................................................... 17

3.6

Volume/Balance Control .................................................................................................... 18

3.7

Automatic Loudness Control .............................................................................................. 20

3.8

Subwoofer Control ............................................................................................................. 20

3.9

Beeper ................................................................................................................................ 20

3.10

SRS™ 3D Surround (STV8226/36 only) ............................................................................ 21

Chapter 4

Audio Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

4.1

Input Audio Matrix .............................................................................................................. 24

4.2

Output Audio Matrix ........................................................................................................... 24

Chapter 5

Additional Controls and Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

5.1

Interrupt Request ............................................................................................................... 25

5.2

I²C Bus Expander ............................................................................................................... 25

5.3

Stereo Flag ......................................................................................................................... 25

5.4

Headphone Detection ........................................................................................................ 25

Chapter 6

I²S Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

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