W83971D Datasheet, PDF (3/58 Pages) Winbond – AC97 AUDIO CODEC

Preliminary W83971D
AC'97 AUDIO CODEC
Table of Contents
1. GENERAL DESCRIPTION ......................................................................................................................... 4
2. FEATURE LIST........................................................................................................................................... 4
3. FUNCTIONAL BLOCK DIAGRAM.............................................................................................................. 5
4. PINOUT AND PACKAGE ........................................................................................................................... 6
5. PIN DESCRIPTION..................................................................................................................................... 8
5.1 Digital I/O ............................................................................................................................................ 8
5.2 Analog I/O ........................................................................................................................................... 8
5.3 Filter and Reference Pins.................................................................................................................... 9
5.4 Power Supplies ................................................................................................................................... 9
6. REGISTER DESCRIPTION ...................................................................................................................... 10
6.1 Register Map..................................................................................................................................... 10
6.2 Reset Register (Index 00h) ............................................................................................................... 11
6.3 Stereo Output Control Register (Index 02h) ...................................................................................... 11
6.3.1 Mute Stereo Output Mute Control..............................................................................................11
6.3.2 ML[5:0] Master Output (Left Channel) Volume Control ..............................................................11
6.3.3 MR[5:0] Master Output (Right Channel) Volume Control ...........................................................11
6.3.4 Output Volume Control Map......................................................................................................12
6.4 Mono Output Control Register (Index 06h)........................................................................................ 13
6.4.1 Mute Mono Output Mute Control ...............................................................................................13
6.4.2 MM[5:0] Mono Output Volume Control ......................................................................................13
6.4.3 Stereo and Mono Output Attenuation ........................................................................................13
6.5 PC_BEEP Input Volume Control Register (Index 0Ah) ..................................................................... 14
6.5.1 Mute PC Beep Input Mute Control .............................................................................................14
6.5.2 PV[3:0] PC Beep Input Volume Control .....................................................................................14
6.6 Phone Input Volume Control Register (Index 0Ch)............................................................................ 14
6.6.1 Mute Phone Input Mute Control.................................................................................................14
6.6.2 GN[4:0] PC Phone Input Volume Control ..................................................................................14
6.6.3 Programmable Input and Output Gain Levels............................................................................15
6.7 Mic Input Volume Control Register (Index 0Eh) ................................................................................ 16
6.7.1 Mute Mic Input Mute Control .....................................................................................................16
6.7.2 20dB Mic Boost Control ............................................................................................................16
Publication Release Date: July 1999
-1-
Revision A1