AA Enhanced Quadrature Encoder Pulse (e QEP) Module Reference Guide

• TMS320x280x, 2801x, 2804x Enhanced Quadrature Encoder Pulse (eQEP) Module
  • Table of Contents
  • Preface
  • 1 Introduction
  • 2 Description
    • 2.1 EQEP Inputs
    • 2.2 Functional Description
    • 2.3 eQEP Memory Map
  • 3 Quadrature Decoder Unit (QDU)
    • 3.1 Position Counter Input Modes
      • 3.1.1 Quadrature Count Mode
      • 3.1.2 Direction-count Mode
      • 3.1.3 Up-Count Mode
      • 3.1.4 Down-Count Mode
    • 3.2 eQEP Input Polarity Selection
    • 3.3 Position-Compare Sync Output
  • 4 Position Counter and Control Unit (PCCU)
    • 4.1 Position Counter Operating Modes
      • 4.1.1 Position Counter Reset on Index Event (QEPCTL[PCRM]=00)
      • 4.1.2 Position Counter Reset on Maximum Position (QEPCTL[PCRM]=01)
      • 4.1.3 Position Counter Reset on the First Index Event (QEPCTL[PCRM] = 10)
      • 4.1.4 Position Counter Reset on Unit Time out Event (QEPCTL[PCRM] = 11)
    • 4.2 Position Counter Latch
      • 4.2.1 Index Event Latch
      • 4.2.2 Strobe Event Latch
    • 4.3 Position Counter Initialization
    • 4.4 eQEP Position-compare Unit
  • 5 eQEP Edge Capture Unit
  • 6 eQEP Watchdog
  • 7 Unit Timer Base
  • 8 eQEP Interrupt Structure
  • 9 eQEP Registers
  • Appendix A Revision History