TMS320x28xx,28xxxEnhancedQuadratureEncoderPulse(eQEP)ModuleReferenceGuideLiteratureNumber:SPRU790ANovember2004–RevisedJanuary20062SPRU790A–November2004–RevisedJanuary2006SubmitDocumentationFeedbackContentsPreface...............................................................................................................................61Introduction................................................................................................................92Description...............................................................................................................112.1EQEPInputs....................................................................................................122.2FunctionalDescription.........................................................................................122.3eQEPMemoryMap............................................................................................133QuadratureDecoderUnit(QDU)..................................................................................153.1PositionCounterInputModes................................................................................153.2eQEPInputPolaritySelection................................................................................183.3Position-CompareSyncOutput...............................................................................184PositionCounterandControlUnit(PCCU)...................................................................184.1PositionCounterOperatingModes...........................................................................184.2PositionCounterLatch.........................................................................................214.3PositionCounterInitialization.................................................................................234.4eQEPPosition-compareUnit.................................................................................235eQEPEdgeCaptureUnit...................................................