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sprufg4a - TMS320x2833x 2823x Enhanced Capture(eCAP Module...

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Unformatted text preview: TMS320x2833x, 2823x Enhanced Capture (eCAP) Module Reference Guide Literature Number: SPRUFG4A August 2008–Revised June 2009 2 SPRUFG4A–August 2008–Revised June 2009 Submit Documentation Feedback Contents Preface ........................................................................................................................................ 6 1 Introduction ......................................................................................................................... 9 2 Description .......................................................................................................................... 9 3 Capture and APWM Operating Mode ..................................................................................... 11 4 Capture Mode Description ................................................................................................... 12 4.1 Event Prescaler .......................................................................................................... 12 4.2 Edge Polarity Select and Qualifier .................................................................................... 13 4.3 Continuous/One-Shot Control .......................................................................................... 13 4.4 32-Bit Counter and Phase Control .................................................................................... 14 4.5 CAP1-CAP4 Registers .................................................................................................. 15 4.6 Interrupt Control .......................................................................................................... 15 4.7 Shadow Load and Lockout Control ................................................................................... 16 4.8 APWM Mode Operation ................................................................................................ 17 5 Capture Module - Control and Status Registers ..................................................................... 18 6 Register Mapping ............................................................................................................... 26 7 Application of the ECAP Module ......................................................................................... 26 7.1 Example 1 - Absolute Time-Stamp Operation Rising Edge Trigger .............................................. 27 7.2 Example 2 - Absolute Time-Stamp Operation Rising and Falling Edge Trigger ................................ 30 7.3 Example 3 - Time Difference (Delta) Operation Rising Edge Trigger ............................................ 32 7.4 Example 4 - Time Difference (Delta) Operation Rising and Falling Edge Trigger .............................. 34 8 Application of the APWM Mode ............................................................................................ 36 8.1 Example 1 - Simple PWM Generation (Independent Channel/s) ................................................. 36 8.2 Example 2 - Multi-channel PWM Generation With Phase Control...
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sprufg4a - TMS320x2833x 2823x Enhanced Capture(eCAP Module...

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