Silicon Laboratories SiM3U1xx Manual de usuario

Rev. 0.1 11/12 Copyright © 2012 by Silicon Laboratories AN726AN726UTILITY CLASS-D TOOLSTICK USER’S GUIDE1. IntroductionClass-D is a switching power a

AN72610 Rev. 0.1The example in Figure 6 assumes a original 12-bit signed data value of 1931 and shows how the average energyincreases. In this particu

AN726Rev. 0.1 115.3. EPCA0 Class-D OutputIn all modes, the EPCA0 module runs in center-aligned PWM mode with an upper limit of 256. This means that t

AN72612 Rev. 0.15.5. Stereo Jack Input ModeIn stereo jack input mode, the goal is to sample at an even division of the EPCA0 update frequency to prov

AN726Rev. 0.1 135.6. USB Input/Output ModeIn USB input/output mode, the system samples and outputs data at 48 kHz. The USB data is 16-bit signed data

AN72614 Rev. 0.15.7. Play Prerecorded Flash ModeIn play prerecorded flash mode, the system outputs data from the flash at 9.6 kHz.Figure 14. Play Pre

AN726Rev. 0.1 155.8. Play/Record Flash ModeIn play/record flash mode, the system samples and outputs data at 9.6 kHz.Figure 16. Play/Record Flash Mod

AN72616 Rev. 0.15.9. Build ConfigurationsThe Precision32 and uVision projects include two build configurations each: Release and Debug. Theseconfigur

AN726Rev. 0.1 17To change the active build configuration in uVision4, select the configuration from the drop-down menu shown inFigure 19.Figure 19. Se

AN72618 Rev. 0.16. Tuning the Class-D Output Network6.1. Revision 1.0 ConfigurationClass-D is an extension of a single-ended, single-pin speaker dri

AN726Rev. 0.1 196.2. Alternate ConfigurationFigure 20 shows the output network configuration used by the Revision 1.0 hardware. An alternate output n

AN7262 Rev. 0.13. Using the DemoThe speaker in the kit connects to the JP1 1x2 header next to the green terminal block (J4). Two alternateconnection

AN72620 Rev. 0.16.3. Revision 1.0 High Power ConfigurationInstead of directly driving the speaker, the high-drive I/O can interface with external MOS

AN726Rev. 0.1 216.4. Alternate High Power ConfigurationThe Revision 1.0 hardware uses a half-bridge configuration shown in Figure 22. This configurat

AN72622 Rev. 0.17. SchematicsLEFT_CHVirtual_GNDRIGHT_CHVirtual_GNDVirtual_GNDVirtual_GNDADC_VREF+3.3V_VDDADC_VREFADC_IN_JACK_2ADC_IN_JACK_1R1521R42.7

AN726Rev. 0.1 23MODE PLAYRECERASEUtility Class-D ToolStickwww.silabs.com/toolstickLED2LED3LED2LED1RESETbSWDIORESETbSWCLKUART0_RXUART0_TXUART0_RXSWDIOI

AN72624 Rev. 0.1R+R-L+L-P_PowerP_PowerP_PowerR+R-R+R-VIOHDVIOHDL-L+R-R+C272.2uFC290.022uFR+L-FB4600 OhmL-_pinL+_IL33.3uHL- PJ5AUDIO JACK132Q1NTR4170NT

AN726Rev. 0.1 258. Bill of MaterialsTable 6. Utility Class-D ToolStick Board Bill of MaterialsReference Part Number Source DescriptionC1, C3 C0603X5R

AN72626 Rev. 0.1R3, R10, R17 CR0603-10W-4703F Venkel 470 k, 1/10 W ±1% ThickFilm 0603R31, R32, R34, R35, R37, R38, R40, R41, R48CR0603-16W-000 Venkel

AN726Rev. 0.1 27NOTES:

AN72628 Rev. 0.1CONTACT INFORMATIONSilicon Laboratories Inc.400 West Cesar ChavezAustin, TX 78701Please visit the Silicon Labs Technical Support web p

AN726Rev. 0.1 33.1. Stereo Jack Input ModeThe default mode of the Class-D ToolStick is stereo jack input mode, indicated by blue LED DS1. To play sou

AN7264 Rev. 0.1 Figure 4. Selecting the USB Utility Class-D ToolStick in Volume Mixer3.3. Play Prerecorded Flash ModeIn prerecorded flash mode, the C

AN726Rev. 0.1 54. Class-D ToolStick Hardware OverviewThe Class-D ToolStick board enables Class-D application development on the SiM3U164 MCU. In addi

AN7266 Rev. 0.14.2. Class-D Output Network, Terminal (J4), Header (JP1), and Jack (J5)The four high drive I/O pins on the SiM3U164 40-pin QFN package

AN726Rev. 0.1 74.5. Capacitive Sensing Buttons and Slider (CS1)Four capacitive sensing buttons and one slider comprised of six segments are included

AN7268 Rev. 0.15. Class-D ToolStick Firmware Overview5.1. System OverviewThe system is configured for 48 MHz AHB and APB to maximize the output reso

AN726Rev. 0.1 95.2. AlgorithmsThe Class-D ToolStick uses two algorithms to manipulate data: Exponentially Weighted Moving Average (EWMA)and µLaw. Thi