CDB4227 데이터 시트보기 (PDF) - Cirrus Logic

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CDB4227

Six Channel, 20-Bit Codec

Cirrus Logic 

CS4227

2.11 Power Supply, Layout, and Grounding .......................................................................... 19

2.12 ADC and DAC Filter Response Plots ............................................................................ 20

3. PIN DESCRIPTIONS .............................................................................................................. 29

4. PARAMETER DEFINITIONS .................................................................................................. 33

5. PACKAGE DIMENSIONS ...................................................................................................... 34

LIST OF FIGURES

Figure 1. Audio Ports Master Mode Timing..................................................................................... 7

Figure 2. Audio Ports Slave Mode and Data I/O Timing ................................................................. 7

Figure 3. Control Port SPI Mode ..................................................................................................... 8

Figure 4. Control Port I2C Mode...................................................................................................... 9

Figure 5. Recommended Connection Diagram............................................................................. 11

Figure 6. Optional Line Intput Buffer ............................................................................................. 12

Figure 7. Butterworth Filters.......................................................................................................... 13

Figure 8. Audio DSP and Auxiliary Port Data Input Formats ........................................................ 16

Figure 9. Audio DSP Port Data Output Formats ........................................................................... 16

Figure 10. One Data Line Modes .................................................................................................. 16

Figure 11. Control Port Timing, SPI Mode .................................................................................... 17

Figure 12. Control Port Timing, I2C® Mode................................................................................... 18

Figure 13. De-emphasis Curve. .................................................................................................... 19

Figure 14. Suggested Layout Guideline........................................................................................ 20

Figure 15. 20-bit ADC Filter Response ......................................................................................... 21

Figure 16. 20-bit ADC Passband Ripple ....................................................................................... 21

Figure 17. 20-bit ADC Transition Band ......................................................................................... 21

Figure 18. DAC Frequency Response .......................................................................................... 21

Figure 19. DAC Passband Ripple ................................................................................................. 21

Figure 20. DAC Transition Band ................................................................................................... 21

LIST OF TABLES

Table 1. Single-ended vs Differential Input Pin Assignments .............................................................. 12

Table 2. High Pass Filter Characteristics ............................................................................................ 13

Table 3. DSP Serial Input Ports........................................................................................................... 15

DS281PP2

3

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