CS4223 CS4224
DAC Control Byte (2)........................................................................................ 23
Output Attenuator Data Byte (3, 4)................................................................... 23
DSP Port Mode Byte (5)................................................................................... 24
Converter Status Report Byte (Read Only) (6)................................................. 24
Clock/Output Control Byte (7) .......................................................................... 25
5. PIN DESCRIPTIONS — CS4223............................................................................... 26
Power Supply ................................................................................................... 26
Analog Inputs ................................................................................................... 27
Analog Outputs................................................................................................. 27
Digital Inputs..................................................................................................... 27
Digital Outputs.................................................................................................. 28
Miscellaneous Pins........................................................................................... 28
6. PIN DESCRIPTIONS — CS4224............................................................................... 29
Power Supply ................................................................................................... 29
Analog Inputs ................................................................................................... 30
Analog Outputs................................................................................................. 30
Digital Inputs..................................................................................................... 30
Digital Outputs.................................................................................................. 31
Control Port Signals ......................................................................................... 31
Miscellaneous Pins........................................................................................... 32
7. PARAMETER DEFINITIONS..................................................................................... 33
8. PACKAGE DIMENSIONS ......................................................................................... 34
LIST OF FIGURES
Figure 1. Serial Audio Port Data I/O Timing .....................................................................6
Figure 2. SPI Control Port Timing .....................................................................................7
Figure 3. I2C Control Port Timing .....................................................................................8
Figure 4. CS4223 Recommended Connection Diagram ................................................10
Figure 5. CS4224 Recommended Connection Diagram ................................................11
Figure 6. Optional Line Input Buffer ................................................................................13
Figure 7. Single-ended Input Application ........................................................................13
Figure 8. Full Scale Input/Output Voltage .......................................................................14
Figure 9. Hybrid Analog/Digital Attenuation ....................................................................15
Figure 10. 2- and 3-Pole Butterworth Filters ...................................................................15
Figure 11. Audio DSP Data Input Formats. ....................................................................17
Figure 12. Control Port Timing, SPI mode ......................................................................18
Figure 13. Control Port Timing, I2C mode ......................................................................18
Figure 14. De-emphasis Curve. ......................................................................................19
Figure 15. Suggested Layout Guideline (See CDB4223/4 Data Sheet) .........................20
Figure 16. ADC Filter Response .....................................................................................21
Figure 17. ADC Passband Ripplee .................................................................................21
Figure 18. ADC Transition Band .....................................................................................21
Figure 19. DAC Filter Response .....................................................................................21
Figure 20. DAC Passband Ripple ...................................................................................21
Figure 21. DAC Transition Band .....................................................................................21
LIST OF TABLES
Table 1. CS4224 vs. CS4223...........................................................................................12
Table 2. High Pass Filter Characteristics .........................................................................14
Table 4. Master Mode vs. Slave Mode Clocking. .............................................................16
Table 3. Common Clock Frequencies ..............................................................................16
Table 5. CS4223 De-Emphasis filter control ....................................................................19
DS290PP3
3
CIRRUS [ CIRRUS LOGIC ]
