Cirrus-logic CDB5464U Manuel d'utilisateur

Copyright © Cirrus Logic, Inc. 2007(All Rights Reserved)www.cirrus.comCDB5464UCDB5464U Engineering Board and GUI SoftwareFeatures Voltage and Current

CDB5464U10 DS847DB1If the Data from Disk item in the Setup menu is selected, a file selection window will appear as shown inFigure 5. User can select

CDB5464UDS847DB1 112.3.3 Quit MenuThe Quit menu allows the user to exit the evaluation software. Upon selecting Quit, a message windowappears and quer

CDB5464U12 DS847DB12.4 Setup WindowThe evaluation software provides access to the CS5464's internal registers through the Setup window.See Figure

CDB5464UDS847DB1 132.4.1 Refresh Screen ButtonThe Refresh Screen button will update the contents of the screen by reading all the register values from

CDB5464U14 DS847DB1is displayed in hexadecimal. Many of the Modes register bits are reserved or unused. Only the usable bitsare displayed in the Setup

CDB5464UDS847DB1 152.5.1 Offset / Gain RegisterIn the offset and gain register boxes, the offset and gain registers for all channels are displayed in

CDB5464U16 DS847DB12.6 Conversion WindowThe Conversion Window allows the user to see the results of single and continuous conversions, performdata ave

CDB5464UDS847DB1 172.6.3 Standby / Sleep Mode ButtonsWhen these buttons are pressed, the CS5464 will enter either standby or sleep power saving modes.

CDB5464U18 DS847DB12.7.1 Integration SecondsThis field allows the user to select the length of time over which pulses will be collected after the Star

CDB5464UDS847DB1 192.8 Data Collection WindowThe Data Collection Window (Figure 12) allows the user to collect sample sets of data from the CS5464and

CDB5464U2 DS847DB1TABLE OF CONTENTS1. HARDWARE ...

CDB5464U20 DS847DB12.8.4 Output ButtonThis button will bring up a window in which the user can output the data to a file for later use, print out aplo

CDB5464UDS847DB1 212.8.7.3 FFT WindowThis box allows the user to select the type of windowing algorithm for FFT processing. Windowing algo-rithms incl

CDB5464U22 DS847DB12.8.10 Analyzing DataThe evaluation software provides three types of analysis tests: Time Domain, Frequency Domain, andHistogram. T

CDB5464UDS847DB1 232.8.11.3 MEANIndicates the mean of the data sample set. The mean is calculated using the following formula:2.8.11.4 STD_DEVIndicate

CDB5464U24 DS847DB12.8.12 Frequency Domain InformationThe following describe the indicators associated with FFT (Fast Fourier Transform) analysis. FFT

CDB5464UDS847DB1 252.8.12.6 SNRIndicates for the signal-to-noise ratio, first 4 harmonics are not included (decibels).2.8.12.7 FS-PdbIndicates for the

CDB5464U26 DS847DB12.8.12.12 MINIMUMIndicates for the minimum value of the collected data set.2.9 EEPROM WindowCDB5464U has an "Auto-Boot" d

CDB5464UDS847DB1 272.10 Debug PanelThe Debug panel provides the user a way to access CS5464 registers and send commands to CS5464directly (Figure 18).

CDB5464U28 DS847DB1APPENDIX A. BILL OF MATERIALS CIRRUS LOGICCDB5464UBILL OF MATERIAL (Page 1 of 2)Item Cirrus P/N Rev Description Qty Reference

CDB5464UDS847DB1 29 CIRRUS LOGICCDB5464UBILL OF MATERIAL (Page 2 of 2)Cirrus P/N Rev Description Qty Reference Designator MFG MFG P/N32 021-00606-01 A

CDB5464UDS847DB1 31. HARDWARE1.1 IntroductionThe CDB5464U evaluation board provides a convenient means of evaluating the CS5464 power mea-surement IC.

CDB5464U30 DS847DB1APPENDIX B. SCHEMATICS Figure 19. Schematic - Analog Inputs

CDB5464UDS847DB1 31 Figure 20. Schematic - CS5464 & Socket

CDB5464U32 DS847DB1 Figure 21. Schematic - Microcontroller & USB Interface

CDB5464UDS847DB1 33 Figure 22. Schematic - Power Supplies

CDB5464U34 DS847DB1APPENDIX C. LAYER PLOTS Figure 23. Top Silkscreen

CDB5464UDS847DB1 35 Figure 24. Top Routing

CDB5464U36 DS847DB1 Figure 25. Bottom Routing

CDB5464UDS847DB1 37 Figure 26. Bottom Silkscreen

CDB5464U38 DS847DB1REVISION HISTORY Revision Date ChangesDB1 OCT 2007 Initial Release.Contacting Cirrus Logic SupportFor all

CDB5464U4 DS847DB11.3 Analog SectionThe CDB5464U evaluation board provides screw-type terminals (J23, J27, & J28) to connect input signalsto the v

CDB5464UDS847DB1 5the inputs are connected to analog ground (AGND). With a jumper on J17, J22, J24, J26, J20, and J19 inposition VREF, the inputs are

CDB5464U6 DS847DB11.5 Power Supply SectionTable 4 illustrates the power supply connections to the evaluation board. The +5V binding post (J3) sup-plie

CDB5464UDS847DB1 71.6 Auto-boot ModeWith a jumper connection on J18 (AUTO-BOOT ENABLE), the CS5464 operates in auto-boot mode andthe CDB5464U board op

CDB5464U8 DS847DB12. SOFTWAREThe evaluation board comes with software and an USB cable to link the evaluation board to the PC. Theevaluation software

CDB5464UDS847DB1 92.3.1 Setup MenuSetup allows user to establish a USB communication connection with CDB5464U board or select a pre-viously saved data