STAC9766 datasheet(2/97 Pages) IDT

2 / 97 page

STAC9766/9767

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

PC AUDIO

IDT™

STAC9766/9767

V 7.4 12/06

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

Table of Contents

1. PRODUCT BRIEF ...................................................................................................................... 6

1.1. Features (Revision CC1 and beyond) ............................................................................................... 6

1.2. Description ........................................................................................................................................ 6

1.3. STAC9766/9767 Block Diagram ........................................................................................................ 8

1.4. Key Specifications ............................................................................................................................. 8

1.5. Related Materials .............................................................................................................................. 8

1.6. Additional Support ............................................................................................................................. 8

2. CHARACTERISTICS AND SPECIFICATIONS .........................................................................9

2.1. Electrical Specifications ..................................................................................................................... 9

2.2. AC Timing Characteristics ............................................................................................................... 13

3. TYPICAL CONNECTION DIAGRAM .......................................................................................17

3.1. Split Independent Power Supply Operation .................................................................................... 18

4. CONTROLLER, CODEC AND AC-LINK .................................................................................20

4.1. AC-link Physical interface ................................................................................................................ 20

4.2. Controller to Single CODEC ............................................................................................................ 20

4.3. Controller to Multiple CODECs ........................................................................................................ 22

4.4. Clocking for Multiple CODEC Implementations ............................................................................... 23

4.5. AC-link Power Management ............................................................................................................ 24

5. AC-LINK DIGITAL INTERFACE ..............................................................................................27

5.1. Overview ......................................................................................................................................... 27

5.2. AC-link Serial Interface Protocol ...................................................................................................... 28

5.3. AC-link Output Frame (SDATA_OUT) ............................................................................................. 31

5.4. AC-link Input Frame (SDATA_IN) .................................................................................................... 34

5.5. AC-link Interoperability Requirements and Recommendations ....................................................... 38

5.6. Slot Assignments for Audio ............................................................................................................. 39

6. STAC9766/9767 MIXER ..........................................................................................................41

6.1. Mixer Description ............................................................................................................................. 41

6.2. Mixer Functional Diagrams .............................................................................................................. 42

6.3. Mixer Analog Input ......................................................................................................................... 43

6.4. Mixer Analog Output ....................................................................................................................... 43

7. SPDIF AND PC BEEP .............................................................................................................44

7.1. SPDIF Digital Mux ...........................................................................................................................44

7.2. PC Beep Implementation ................................................................................................................ 44

8. PROGRAMMING REGISTERS ...............................................................................................46

8.1. Register Descriptions ...................................................................................................................... 47

8.2. General Purpose Input & Outputs ................................................................................................... 65

8.3. Extended CODEC Registers Page Structure Definition .................................................................. 68

8.4. STAC9766/9767 Paging Registers ................................................................................................. 69

8.5. Vendor ID1 and ID2 (Index 7Ch and 7Eh) ...................................................................................... 79

9. LOW POWER MODES ...........................................................................................................81

10. MULTIPLE CODEC SUPPORT ............................................................................................83

10.1. Primary/Secondary CODEC Selection .......................................................................................... 83

10.2. Secondary CODEC Register Access Definitions .......................................................................... 84

11. TESTABILITY ........................................................................................................................85

11.1. ATE Test Mode ............................................................................................................................. 85

12. ORDERING INFORMATION ..................................................................................................86

12.1. STAC9766/9767 Family Options and Part Order Numbers ...........................................................86

13. PIN DESCRIPTION ................................................................................................................87

13.1. Digital I/O ...................................................................................................................................... 88

13.2. Filter/References .......................................................................................................................... 88

13.3. Analog I/O .................................................................................................................................... 89

13.4. Power and Ground Signals .......................................................................................................... 90

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