CDB42L73 Datasheet, PDF (2/36 Pages) Cirrus Logic – Ecaluation Borard for the CS42L73

CDB42L73
TABLE OF CONTENTS
1. QUICK SETUP GUIDE ........................................................................................................................... 4
2. THE CDB42L73 SYSTEM OVERVIEW .................................................................................................. 5
2.1 Power Supply Circuitry ..................................................................................................................... 5
2.2 Digital Inputs and Outputs ................................................................................................................ 5
2.3 Digital Mic Input ................................................................................................................................ 5
2.4 Analog Inputs .................................................................................................................................... 6
2.5 Analog Outputs ................................................................................................................................. 6
2.6 Control Port Interface ....................................................................................................................... 6
2.7 Layout Reference ............................................................................................................................. 6
2.8 CS42L73 Ultralow Power Mobile Audio and Telephony CODEC ..................................................... 7
2.9 Performance Measurement Tips ...................................................................................................... 7
3. SYSTEM CONNECTIONS AND JUMPER SETTINGS .......................................................................... 8
4. SOFTWARE CONTROL USING FLEXGUI .......................................................................................... 12
4.1 Installation and First-time Setup ..................................................................................................... 12
4.2 Working with Register Settings ....................................................................................................... 12
4.2.1 Modifying Register Settings Manually ................................................................................... 12
4.2.2 Save or Restore Register Settings ........................................................................................ 12
4.3 Using the FlexGUI High-level Interface Layout .............................................................................. 13
4.3.1 S/PDIF Tab ............................................................................................................................ 14
4.3.2 Power Tab ............................................................................................................................. 15
4.3.3 Clocking XSP VSP ASP Tab ................................................................................................. 16
4.3.4 Analog Input Tab ................................................................................................................... 17
4.3.5 Input DSP Tab ....................................................................................................................... 18
4.3.6 Digital Mixer 1 Tab ................................................................................................................ 19
4.3.7 Digital Mixer 2 Tab ................................................................................................................ 20
4.3.8 Output DSP Tab .................................................................................................................... 21
4.3.9 Analog Output Tab ................................................................................................................ 22
4.4 The Register Map ........................................................................................................................... 23
5. SCHEMATICS AND LAYOUT ........................................................................................................ 24
6. REVISION HISTORY ........................................................................................................................... 36
LIST OF FIGURES
Figure 1. CDB42L73 Factory Default Jumper Settings ............................................................................. 11
Figure 2. Save Register Settings .............................................................................................................. 12
Figure 3. Restore Register Settings .......................................................................................................... 12
Figure 4. FlexGUI Tabs ............................................................................................................................. 13
Figure 5. Correlating the FlexGUI Tabs to the Audio Signal Chain ........................................................... 13
Figure 6. The “S/PDIF” Tab in FlexGUI for the CDB42L73 ....................................................................... 14
Figure 7. The “Power” Tab in FlexGUI for the CDB42L73 ........................................................................ 15
Figure 8. The “Clocking XSP VSP ASP” Tab in FlexGUI for the CDB42L73 ............................................ 16
Figure 9. The “Analog Input” Tab in FlexGUI for the CDB42L73 .............................................................. 17
Figure 10. The “Input DSP” Tab in FlexGUI for the CDB42L73 ................................................................ 18
Figure 11. The “Digital Mixer 1” Tab in FlexGUI for the CDB42L73 .......................................................... 19
Figure 12. The “Digital Mixer 2” Tab in FlexGUI for the CDB42L73 .......................................................... 20
Figure 13. The “Output DSP” Tab in FlexGUI for the CDB42L73 ............................................................. 21
Figure 14. The “Analog Output” Tab in FlexGUI for the CDB42L73 ......................................................... 22
Figure 15. The “Register Maps” Tab in FlexGUI for the CDB42L73 ......................................................... 23
Figure 16. System Block Diagram ............................................................................................................. 24
Figure 17. CS42L73 .................................................................................................................................. 25
Figure 18. USB and Microcontroller .......................................................................................................... 26
Figure 19. S/PDIF Receiver and Transmitter; Clock Buffers ..................................................................... 27
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DS882DB1