Document Outline

• 1. Pin Descriptions
  • 1.1 TSSOP Pin Descriptions
  • 1.2 QFN Pin Descriptions
• 2. Characteristics and Specifications
  • Specified Operating Conditions
  • Absolute Maximum Ratings
  • Performance Specifications
  • Digital Filter Characteristics
  • DC Electrical Characteristics
  • Digital Input Characteristics
  • Digital Interface Specifications
  • Switching Specifications
    • Figure 1. Non-TDM Slave Mode Timing
    • Figure 2. TDM Slave Mode Timing
    • Figure 3. Non-TDM Master Mode Timing
    • Figure 4. TDM Master Mode Timing
• 3. Typical Connection Diagrams
  • Figure 5. Typical Connection Diagram, No External Master Clock
  • Figure 6. Typical Connection Diagram, Master and Slave Modes
• 4. Applications
  • 4.1 Three-wire Serial Input/Output Audio Port
    • Figure 7. Serial Audio Interface Format - I·S
    • Figure 8. Serial Audio Interface Format - Left-Justified
    • Figure 9. Serial Audio Interface Format - Right-Justified
  • 4.2 Mode Selection
    • Table 1. Serial Audio Port Master/Slave and Clock Ratio Select Start-Up Options (MS_SEL)
    • Table 2. Serial Audio Input Port Start-Up Options (SAIF)
    • Table 3. Serial Audio Output Port Start-Up Options (SAOF)
  • 4.3 Sample Rate Converter (SRC)
    • 4.3.1 Data Resolution and Dither
    • 4.3.2 SRC Locking and Varispeed
    • 4.3.3 Bypass Mode
    • 4.3.4 Muting
    • 4.3.5 Group Delay and Phase Matching Between Multiple CS8421 Parts
    • 4.3.6 Master Clock
    • 4.3.7 Clocking
      • Figure 10. Typical Connection Diagram for Crystal Circuit
  • 4.4 Time Division Multiplexing (TDM) Mode
    • Figure 11. TDM Slave Mode Timing Diagram
    • Figure 12. TDM Master Mode Timing Diagram
    • Figure 13. TDM Mode Configuration (All CS8421 Outputs are Slave)
    • Figure 14. TDM Mode Configuration (First CS8421 Output is Master, All Others are Slave)
  • 4.5 Reset, Power-Down, and Start-Up
  • 4.6 Power Supply, Grounding, and PCB Layout
• 5. Performance Plots
  • Figure 15. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 48 kHz:48 kHz
  • Figure 16. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 44.1 kHz:192 kHz
  • Figure 17. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 44.1 kHz:48 kHz
  • Figure 18. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 48 kHz:44.1 kHz
  • Figure 19. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 48 kHz:96 kHz
  • Figure 20. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 96 kHz:48 kHz
  • Figure 21. Wideband FFT Plot (16k Points) 0 dBFS 1 kHz Tone, 192 kHz:48 kHz
  • Figure 22. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 48 kHz:96 kHz
  • Figure 23. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 48 kHz:48 kHz
  • Figure 24. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 44.1 kHz:192 kHz
  • Figure 25. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 44.1 kHz:48 kHz
  • Figure 26. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 48 kHz:44.1 kHz
  • Figure 27. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 96 kHz:48 kHz
  • Figure 28. IMD, 10 kHz and 11 kHz -7 dBFS, 96 kHz:48 kHz
  • Figure 29. Wideband FFT Plot (16k Points) - 60 dBFS 1 kHz Tone, 192 kHz:48 kHz
  • Figure 30. IMD, 10 kHz and 11 kHz -7 dBFS, 48 kHz:44.1 kHz
  • Figure 31. IMD, 10 kHz and 11 kHz -7 dBFS, 44.1 kHz:48 kHz
  • Figure 32. Wideband FFT Plot (16k Points) 0 dBFS 20 kHz Tone, 44.1 kHz:48 kHz
  • Figure 33. Wideband FFT Plot (16k Points) 0 dBFS 80 kHz Tone, 192 kHz:192 kHz
  • Figure 34. Wideband FFT Plot (16k Points) 0 dBFS 20 kHz Tone, 48 kHz:96 kHz
  • Figure 35. Wideband FFT Plot (16k Points) 0 dBFS 20 kHz Tone, 48 kHz:48 kHz
  • Figure 36. Wideband FFT Plot (16k Points) 0 dBFS 20 kHz Tone, 96 kHz:48 kHz
  • Figure 37. Wideband FFT Plot (16k Points) 0 dBFS 20 kHz Tone, 48 kHz:44.1 kHz
  • Figure 38. THD+N vs. Output Sample Rate, 0 dBFS 1 kHz Tone, Fsi = 192 kHz
  • Figure 39. THD+N vs. Output Sample Rate, 0 dBFS 1 kHz Tone, Fsi = 48 kHz
  • Figure 40. THD+N vs. Output Sample Rate, 0 dBFS 1 kHz Tone, Fsi = 96 kHz
  • Figure 41. THD+N vs. Output Sample Rate, 0 dBFS 1 kHz Tone, Fsi = 44.1 kHz
  • Figure 42. Dynamic Range vs. Output Sample Rate, -60 dBFS 1 kHz Tone, Fsi = 192 kHz
  • Figure 43. THD+N vs. Output Sample Rate, 0 dBFS 1 kHz Tone, Fsi = 32 kHz
  • Figure 44. Dynamic Range vs. Output Sample Rate, -60 dBFS 1 kHz Tone, Fsi = 32 kHz
  • Figure 45. Dynamic Range vs. Output Sample Rate, -60 dBFS 1 kHz Tone, Fsi = 96 kHz
  • Figure 46. Dynamic Range vs. Output Sample Rate, -60 dBFS 1 kHz Tone, Fsi = 44.1 kHz
  • Figure 47. Frequency Response with 0 dBFS Input
  • Figure 48. Passband Ripple, 192 kHz:48 kHz
  • Figure 49. Dynamic Range vs. Output Sample Rate, -60 dBFS 1 kHz Tone, Fsi = 48 kHz
  • Figure 50. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 48 kHz:48 kHz
  • Figure 51. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 48 kHz:44.1 kHz
  • Figure 52. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 48 kHz:96 kHz
  • Figure 53. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 96 kHz:48 kHz
  • Figure 54. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 44.1 kHz:192 kHz
  • Figure 55. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 44.1 kHz:48 kHz
  • Figure 56. Linearity Error, 0 to -140 dBFS Input, 200 Hz Tone, 192 kHz:44.1 kHz
  • Figure 57. THD+N vs. Input Amplitude, 1 kHz Tone, 48 kHz:44.1 kHz
  • Figure 58. THD+N vs. Input Amplitude, 1 kHz Tone, 48 kHz:96 kHz
  • Figure 59. THD+N vs. Input Amplitude, 1 kHz Tone, 96 kHz:48 kHz
  • Figure 60. THD+N vs. Input Amplitude, 1 kHz Tone, 44.1 kHz:192 kHz
  • Figure 61. THD+N vs. Input Amplitude, 1 kHz Tone, 44.1 kHz:48 kHz
  • Figure 62. THD+N vs. Input Amplitude, 1 kHz Tone, 192 kHz:48 kHz
  • Figure 63. THD+N vs. Frequency Input, 0 dBFS, 48 kHz:44.1 kHz
  • Figure 64. THD+N vs. Frequency Input, 0 dBFS, 48 kHz:96 kHz
  • Figure 65. THD+N vs. Frequency Input, 0 dBFS, 44.1 kHz:48 kHz
  • Figure 66. THD+N vs. Frequency Input, 0 dBFS, 96 kHz:48 kHz
• 6. Package Dimensions
  • TSSOP Thermal Characteristics
  • QFN Thermal Characteristics
• 7. Ordering Information
• 8. Revision History