CDB5464U Cirrus Logic

CDB5464U CDB5464U Engineering Board and GUI Software Features General Description The CDB5464U is an inexpensive tool designed to evaluate Voltage and Current Interface the functionality and performance of the CS5464 analog-to-dig- ital converter (ADC). The evaluation board includes an LT1019 USB Communication with PC voltage reference, a C8051F320 microcontroller with a USB in- terface, and firmware. The microcontroller controls the serial On-board C8051F320 Microcontroller communication between the evaluation board and the PC via the firmware, enabling quick and easy access to all of On-board Voltage Reference theCS5464 s registers and functions. LabWindows /CVI GUI Software The CDB5464U includes software for data capture, time do- Register Setup & Chip Control main analysis, histogram analysis, and frequency domain analysis. FFT Analysis Time Domain Analysis Schematics in PADS PowerLogic format are available for Noise Histogram Analysis download at www.cirrus.com/IndustrialSoftware. Auto-boo Demo with Serial EEPROM ORDERING INFORMATION CDB5464U Evaluation Board USB VD+ EXT Vu+ EXT +5V GND +2.5V reference SERIAL EERPOM REF IN OUT CS VREF VIN+ SDI C8051F320 SDO SCLK VIN- INT IIN1+ RESET CS5464 Reset E1 Circuirty IIN1- RESET BUTTON E2 IIN2+ E3 MODE IIN2- 4.096MHz Crystal Copyright Cirrus Logic, Inc. 2007 OCT 07 www.cirrus.com (All Rights Reserved) DS847DB1CDB5464U TABLE OF CONTENTS 1. HARDWARE ............................................................................................................................. 3 1.1 Introduction ........................................................................................................................ 3 1.2 Evaluation Board Overview ................................................................................................ 3 1.3 Analog Section ................................................................................................................... 4 1.4 Digital Section .................................................................................................................... 5 1.5 Power Supply Section ........................................................................................................ 6 1.6 Auto-boot Mode ................................................................................................................. 7 2. SOFTWARE .............................................................................................................................. 8 2.1 Installation .......................................................................................................................... 8 2.2 Using the Software ............................................................................................................. 8 2.3 Start-up Window ................................................................................................................ 8 2.4 Setup Window .................................................................................................................. 12 2.5 Calibration Windows ........................................................................................................14 2.6 Conversion Window ......................................................................................................... 16 2.7 Pulse Rate Window ..........................................................................................................17 2.8 Data Collection Window ................................................................................................... 19 2.9 EEPROM Window ............................................................................................................ 26 2.10 Debug Panel .................................................................................................................. 27 Appendix A. Bill Of Materials .................................................................................................... 28 Appendix B. Schematics ........................................................................................................... 30 Appendix C. Layer Plots ............................................................................................................ 34 LIST OF FIGURES Figure 1. CDB5464U Assembly Drawing ........................................................................................ 3 Figure 2. GUI Start-up Window ....................................................................................................... 8 Figure 3. Setup Menu Showing Successful USB Connection......................................................... 9 Figure 4. USB Error Message ......................................................................................................... 9 Figure 5. Data from Disc File Selection Window ........................................................................... 10 Figure 6. Menu Pull-down Options................................................................................................10 Figure 7. Quit Dialog ..................................................................................................................... 11 Figure 8. Setup Window ................................................................................................................ 12 Figure 9. Calibration Window ....................................................................................................... 14 Figure 10. Conversion Window ..................................................................................................... 16 Figure 11. Pulse Rate Output Window .......................................................................................... 17 Figure 12. Data Collection Window ...............................................................................................19 Figure 13. Configuration Window .................................................................................................. 20 Figure 14. Histogram Analysis ...................................................................................................... 22 Figure 15. FFT Analysis ................................................................................................................ 24 Figure 16. Time Domain Analysis .................................................................................................25 Figure 17. EEPROM Window........................................................................................................26 Figure 18. Debug Panel ................................................................................................................ 27 Figure 19. Schematic - Analog Inputs ........................................................................................... 30 Figure 20. Schematic - CS5464 & Socket..................................................................................... 31 Figure 21. Schematic - Microcontroller & USB Interface............................................................... 32 Figure 22. Schematic - Power Supplies ........................................................................................ 33 Figure 23. Top Silkscreen ............................................................................................................. 34 Figure 24. Top Routing.................................................................................................................. 35 Figure 25. Bottom Routing ............................................................................................................ 36 Figure 26. Bottom Silkscreen ........................................................................................................ 37 2 DS847DB1