STAC9750 Datasheet, PDF (3/73 Pages) Integrated Device Technology – VALUE-LINE TWO-CHANNEL AC’97 CODECS

STAC9750/9751
VALUE-LINE TWO-CHANNEL AC’97 CODECS
PC AUDIO
LIST OF FIGURES
Figure 1. STAC9750/9751 Block Diagram ...................................................................................................... 6
Figure 2. Cold Reset Timing ......................................................................................................................... 15
Figure 3. Warm Reset Timing ....................................................................................................................... 15
Figure 4. Clocks Timing ................................................................................................................................ 16
Figure 5. Data Setup and Hold Timing ......................................................................................................... 17
Figure 6. Signal Rise and Fall Times Timing ................................................................................................ 17
Figure 7. AC-Link Low Power Mode Timing ................................................................................................. 18
Figure 8. ATE Test Mode Timing .................................................................................................................. 18
Figure 9. STAC9751 Typical Connection Diagram ....................................................................................... 19
Figure 10. AC-Link to its Companion Controller ........................................................................................... 20
Figure 11. AC'97 Standard Bi-directional Audio Frame ................................................................................ 22
Figure 12. AC-Link Audio Output Frame ...................................................................................................... 22
Figure 13. Start of an Audio Output Frame ................................................................................................... 23
Figure 14. STAC9750/9751 Audio Input Frame ........................................................................................... 26
Figure 15. Start of an Audio Input Frame ..................................................................................................... 26
Figure 16. STAC9750/9751 Powerdown Timing ......................................................................................... 29
Figure 17. STAC9750 2-Channel Mixer Functional Diagram .................................................................. 31
Figure 18. STAC9751 2-Channel Mixer Functional Diagram ....................................................................... 32
Figure 19. Example of STAC9750/9751 Powerdown/Powerup Flow ........................................................... 56
Figure 20. STAC9750/9751 Powerdown/Powerup Flow With Analog Still Active ........................................ 57
Figure 21. STAC9750/9751 Pin Description Drawing ................................................................................... 61
Figure 22. Package Drawing - 48-pin LQFP .................................................................................................. 66
Figure 23. Reflow Profile .............................................................................................................................. 67
Figure 24. STAC9750/9751 Split Independent Power Supply Operation Typical Connection Diagram ....... 70
IDT™
VALUE-LINE TWO-CHANNEL AC’97 CODECS
3
STAC9750/9751
V 5.8 103106