CS42L51
LIST OF FIGURES
Figure 1. Typical Connection Diagram (Software Mode) .......................................................................... 10
Figure 2. Typical Connection Diagram (Hardware Mode)......................................................................... 11
Figure 3. Headphone Output Test Load.................................................................................................... 19
Figure 4. Serial Audio Interface Slave Mode Timing................................................................................. 21
Figure 5. TDM Serial Audio Interface Timing............................................................................................ 21
Figure 6. Serial Audio Interface Master Mode Timing............................................................................... 21
Figure 7. Control Port Timing - I²C............................................................................................................ 22
Figure 8. Control Port Timing - SPI Format............................................................................................... 23
Figure 9. Analog Input Architecture........................................................................................................... 28
Figure 10. MIC Input Mix w/Common Mode Rejection.............................................................................. 30
Figure 11. Differential Input....................................................................................................................... 30
Figure 12. ALC.......................................................................................................................................... 31
Figure 13. Noise Gate Attenuation............................................................................................................ 32
Figure 14. Output Architecture.................................................................................................................. 33
Figure 15. De-Emphasis Curve................................................................................................................. 33
Figure 16. Beep Configuration Options..................................................................................................... 34
Figure 17. Peak Detect & Limiter .............................................................................................................. 35
Figure 18. Master Mode Timing ................................................................................................................ 38
Figure 19. Tri-State Serial Port ................................................................................................................. 38
Figure 20. I²S Format................................................................................................................................ 39
Figure 21. Left-Justified Format ................................................................................................................ 39
Figure 22. Right-Justified Format (DAC only) ........................................................................................... 39
Figure 23. Initialization Flow Chart............................................................................................................ 41
Figure 24. Control Port Timing in SPI Mode ............................................................................................. 42
Figure 25. Control Port Timing, I²C Write.................................................................................................. 43
Figure 26. Control Port Timing, I²C Read.................................................................................................. 43
Figure 27. AIN & PGA Selection ............................................................................................................... 53
Figure 28. THD+N vs. Ouput Power per Channel at 1.8 V (16 Ω load) .................................................... 72
Figure 29. THD+N vs. Ouput Power per Channel at 2.5 V (16 Ω load) .................................................... 72
Figure 30. THD+N vs. Ouput Power per Channel at 1.8 V (32 Ω load) .................................................... 73
Figure 31. THD+N vs. Ouput Power per Channel at 2.5 V (32 Ω load) .................................................... 73
Figure 32. ADC THD+N vs. Frequency w/Capacitor Effects..................................................................... 74
Figure 33. ADC Passband Ripple ............................................................................................................. 78
Figure 34. ADC Stopband Rejection......................................................................................................... 78
Figure 35. DAC Passband Ripple ............................................................................................................. 78
Figure 36. DAC Stopband......................................................................................................................... 78
Figure 35. DAC Transition Band ............................................................................................................... 78
Figure 36. DAC Transition Band (Detail)................................................................................................... 78
Figure 35. ADC Transition Band ............................................................................................................... 78
Figure 36. ADC Transition Band (Detail)................................................................................................... 78
6
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