stv8226t STMicroelectronics, stv8226t Datasheet - Page 2

• Manufacturer Part Number: stv8226t
• Description: Multistandard Tv Audio Processor And Digital Sound Demodulator
• Manufacturer: STMicroelectronics

Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
2/97
1.1
1.2
1.3
2.1
2.2
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
4.1
4.2
5.1
5.2
5.3
5.4
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Overview .............................................................................................................................. 5
Typical Applications
I/O Pin Description ............................................................................................................. 10
Demodulator Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Digital Demodulator ............................................................................................................ 12
System Clock ..................................................................................................................... 16
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
Audio Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Input Audio Matrix .............................................................................................................. 26
Output Audio Matrix ........................................................................................................... 26
Additional Controls and Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Interrupt Request ............................................................................................................... 27
I²C Bus Expander ............................................................................................................... 27
Stereo Flag ......................................................................................................................... 27
Headphone Detection ........................................................................................................ 27
I²S Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Table of Contents
......................................................................................................... 6
STV82x6