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Microchip Technology dsPIC30F User Manual

Microchip Technology dsPIC30F
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Page #13 background image
dsPIC30F Quadrature Encoder Interface Module
© 2005 Microchip Technology Inc.
Page 13
© 2005 Microchip Technology Incorporated. All Rights Reserved. dsPIC30F Quadrature Encoder Interface Module 13
Key Support Documents
Device Selection Reference Document #
General Purpose and Sensor Family Data Sheet DS70083
Motor Control and Power Conv. Data Sheet DS70082
dsPIC30F Family Overview DS70043
Base Design Reference Document #
dsPIC30F Family Reference Manual DS70046
dsPIC30F Programmer’s Reference Manual DS70030
MPLAB MPLAB® C30 C Compiler User User’s Guide DS51284
MPLAB ASM30, LINK30 & Utilities User DS51317
dsPIC® Language Tools Libraries DS51456
For more information, here are references to some important documents that
contain a lot of information about the dsPIC30F family of devices.
The Family Reference Manual contains detailed information about the
architecture and peripherals, whereas the Programmer’s Reference Manual
contains a thorough description of the instruction set.

Other manuals for Microchip Technology dsPIC30F

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Microchip Technology dsPIC30F Specifications

General IconGeneral
BrandMicrochip Technology
ModeldsPIC30F
CategoryController
LanguageEnglish

Summary

What is a Quadrature Encoder?

dsPIC QEI Features Overview

QEI Signal Decoding and Accumulation

Explains how QEI decodes input signals and accumulates position counts.

Input Swapping and Noise Filters

Covers logical input swapping and programmable noise filters for signal integrity.

Counting Modes and Registers

Discusses x2/x4 counting modes, position count register, and reset options.

dsPIC QEI Module Block Diagram

Digital Filters for QEI Inputs

Digital Filter Clock Options and Stability

Details clock options for filtering and the stability requirement for signal processing.

Noise Filtering Characteristics and Latency

Explains how clock division affects filtering and the latency introduced by the filter.

dsPIC Quadrature Decoder Functionality

Quadrature Decoder Basic Modes

Outlines the four basic operating modes of the quadrature decoder.

Decoder Operation: x2 vs x4 Modes

Explains the timing and resolution differences between x2 and x4 decoder modes.

dsPIC Position Counter

Position Counter Functionality

Describes the up/down counter, its register, and comparison capabilities.

Position and Speed Measurement Applications

Details how the position counter is used for measuring motor position and speed.

QEI as a 16-bit Timer/Counter

Key Support Documents

Related Material and Application Notes