SigmaTel, Inc.
Data Sheet
STAC9721
3
04/07/00
04/07/00
Table 21. Cold Reset
33
Table 22. Warm Reset
34
Table 23. Clocks
34
Table 24. Data Setup and Hold
35
Table 25. Signal Rise and Fall Times
35
Table 26. AC-Link Low Power Mode Timing
36
Table 27. ATE Test Mode
37
Table 28. Operating Conditions
38
Table 33: Power Consumption 39
Table 34: Power Consumption at 3.3V Analog 39
Table 35: Reduced Analog Power Settings
40
Table 30. AC-Link Static Specifications
41
Table 31. Analog Performance Characteristics 41
Table 32. Analog Performance Characteristics 43
Table of Contents – Figures
Figure 1. Package Outline ..................................... 4
Figure 2. STAC9721/23 Block Diagram............... 5
Figure 3. AC-Link to its companion controller .. 10
Figure 4. Bi-directional Audio Frame ................. 12
Figure 5. AC-Link Audio Output Frame .......... 12
Figure 6. Start of an Audio Output Frame ....... 13
Figure 7. STAC9721/23 Audio Input Frame ..... 16
Figure 8. Start of an Audio Input Frame ........... 16
Figure 9. STAC9721/23 Powerdown Timing ..... 18
Figure 10. STAC9721/23 Mixer ......................... 19
Figure 11. Powerdown/Powerup flow.................. 29
Figure 12. Powerdown/Powerup flow ................. 30
Figure 13. Cold Reset........................................... 33
Figure 14. Warm Reset........................................ 34
Figure 15. Clocks.................................................. 34
Figure 16. Data Setup and Hold.......................... 35
Figure 17. Signal Rise and Fall Times ................ 35
Figure 18. AC-Link Low Power Mode Timing.. 36
Figure 19. ATE Test Mode .................................. 37
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