sprug04a - TMS320x2833x, 2823x Enhanced Pulse Width...

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Unformatted text preview: TMS320x2833x, 2823x Enhanced Pulse Width Modulator (ePWM) Module Reference Guide Literature Number: SPRUG04A October 2008–Revised July 2009 2 SPRUG04A–October 2008–Revised July 2009 Submit Documentation Feedback Contents Preface ............................................................................................................................... 9 1 Introduction ............................................................................................................. 13 1.1 Introduction .................................................................................................................. 14 1.2 Submodule Overview ...................................................................................................... 14 1.3 Register Mapping ........................................................................................................... 17 2 ePWM Submodules ................................................................................................... 19 2.1 Overview ..................................................................................................................... 20 2.2 Time-Base (TB) Submodule .............................................................................................. 23 2.2.1 Purpose of the Time-Base Submodule ......................................................................... 23 2.2.2 Controlling and Monitoring the Time-base Submodule ....................................................... 24 2.2.3 Calculating PWM Period and Frequency ....................................................................... 25 2.2.4 Phase Locking the Time-Base Clocks of Multiple ePWM Modules ......................................... 30 2.2.5 Time-base Counter Modes and Timing Waveforms .......................................................... 30 2.3 Counter-Compare (CC) Submodule ..................................................................................... 33 2.3.1 Purpose of the Counter-Compare Submodule ................................................................ 33 2.3.2 Controlling and Monitoring the Counter-Compare Submodule .............................................. 34 2.3.3 Operational Highlights for the Counter-Compare Submodule ............................................... 35 2.3.4 Count Mode Timing Waveforms ................................................................................ 35 2.4 Action-Qualifier (AQ) Submodule ........................................................................................ 38 2.4.1 Purpose of the Action-Qualifier Submodule ................................................................... 38 2.4.2 Action-Qualifier Submodule Control and Status Register Definitions ...................................... 38 2.4.3 Action-Qualifier Event Priority ................................................................................... 41 2.4.4 Waveforms for Common Configurations ...........................................................................
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sprug04a - TMS320x2833x, 2823x Enhanced Pulse Width...

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