Microchip Technology Audio Development Board User guide

Audio Development Board

User’s Guide

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,

PIC

logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their respective companies.

Printed on recycled paper.

ISBN: 978-1-61341-200-8

Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.

MCUs and dsPIC® DSCs, KEELOQ

code hopping

AUDIO DEVELOPMENT BOARD USER’S GUIDE

Table of Contents

Preface ........................................................................................................................... 5

Chapter 1. Introduction

1.1 Overview ...................................................................................................... 11

Chapter 2. Hardware

2.1 Power Supply ............................................................................................... 13

2.2 Microcontroller .............................................................................................. 13

2.3 Audio Codec, Microphone and Audio Connections ...................................... 13

2.4 Expansion Connector ................................................................................... 14

2.5 TFT Display .................................................................................................. 14

2.6 USB Connectivity ......................................................................................... 14

2.7 UART Connectivity ....................................................................................... 14

2.8 User LEDs and Switches .............................................................................. 14

Appendix A. Schematics and Board Layout

A.1 Audio Development Board Schematics ....................................................... 15

A.2 Audio Development Board Layout ............................................................... 20

Worldwide Sales and Service .................................................................................... 22

Audio Development Board User’s Guide

NOTES:

AUDIO DEVELOPMENT BOARD

USER’S GUIDE

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document.

For the most up-to-date information on development tools, see the MPLAB Select the Help menu, and then Topics to open a list of available on-line help files.

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the Audio Development Board. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Development Systems Customer Change Notification Service

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the Audio Development Board as a development tool to design high-quality audio development platforms.

This user’s guide is composed of the following:

• Chapter 1. “Introduction” – provides an overview of the Audio Development

Board, highlighting its features and uses.

• Chapter 2. “Hardware” – provides the hardware descriptions of the Audio

Development Board.

• Appendix A. “Schematics and Board Layout” – provides a detailed schematic

and a board layout diagram of the Audio Development Board.

Audio Development Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books MPLAB

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog

A menu selection select Enable Programmer

Quotes A field name in a window or dialog “Save project before build”

Underlined, italic text with right

A menu path File>Save

angle bracket

Bold characters A dialog button Click OK

A tab Click the Power tab

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New

Sample source code

Filenames

File paths

Keywords

Command-line options

Bit values

Constants (in source code)

Italic Courier New A variable argument

#define START

autoexec.bat

C:\mcc18\h

_asm, _endasm, static

-Opa+, -Opa-

0, 1

0xFF, ‘A’

file.o, where valid filename

Square brackets [ ] Optional arguments

Curly brackets and pipe character: { | }

Choice of mutually exclusive arguments; an OR selection

Ellipses... Replaces repeated text

Represents code supplied by user

mcc18 [options] file [options]

errorlevel {0|1}

var_name [, var_name...]

void main (void) { ... }

IDE User’s Guide

file can be any

RECOMMENDED READING

This user’s guide describes how to use the Audio Development Board. The following Microchip documents are available and recommended as supplemental reference resources.

MPLAB® C Compiler for PIC24 MCUs and dsPIC® DSCs User’s Guide (DS51284)

This document helps you use Microchip’s 16-bit C compilers to develop your application.The compilers are the MPLAB C Compiler for dsPIC DSCs and PIC24 MCUs, the MPLAB C Compiler for dsPIC DSCs (subset of the first), and the MPLAB C Compiler for PIC24 MCUs (subset of the first). These compilers are GNU-based language tools, based on source code from the Free Software Foundation (FSF). For more information about FSF, see www.fsf.org.

MPLAB® Assembler, Linker and Utilities for PIC24 MCUs and dsPIC® DSCs User’s Guide (DS51317)

This document helps you use Microchip Technology’s 16-bit language tools based on GNU technology. The language tools discussed are the MPLAB Assembler for dsPIC DSCs and PIC24 MCUs, MPLAB Object Linker for dsPIC DSCs and PIC24 MCUs, MPLAB Archiver/Librarian for dsPIC DSCs and PIC24 MCUs and other 16-bit device utilities.

Preface

MPLAB® C Compiler for PIC32 User’s Guide (DS51686)

This document, formerly the “MPLAB C32 C Compiler for PIC32 User’s Guide”, details the use of Microchip’s MPLAB C Compiler for PIC32 to develop an application.

MPLAB® IDE User’s Guide (DS51519)

Consult this document for more information pertaining to the installation and implementation of the MPLAB IDE software, as well as the MPLAB Editor and MPLAB SIM Simulator software that are included with it.

Universal Serial Bus Specification and Associated Documents

The Universal Serial Bus is defined by the USB 2.0 specification and its associated supplements and class-specific documents. These documents are available from the USB Implementers Forum. See their website at: http://www.usb.org

ADDITIONAL INFORMATION

iPod is a registered trademark of Apple, Inc., registered in the U.S. and other countries.

Audio Development Board User’s Guide

THE MICROCHIP WEB SITE

Microchip provides online support via our web site at: http://www.microchip.com. This web site makes files and information easily available to customers. Accessible by most Internet browsers, the web site contains the following information:

• Product Support – Data sheets and errata, application notes and sample

programs, design resources, user’s guides and hardware support documents, latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical

support requests, online discussion groups, Microchip consultant program member listings

• Business of Microchip – Product selector and ordering guides, latest Microchip

press releases, listings of seminars and events; and listings of Microchip sales offices, distributors and factory representatives

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.

To register, access the Microchip web site at http://www.microchip.com, click Customer Change Notification and follow the registration instructions.

The Development Systems product group categories are:

• Compilers – The latest information on Microchip C compilers and other language

tools. These include the MPLAB assemblers; MPLINK™ and MPLAB 16-bit object linkers; and MPLIB™ and MPLAB 16-bit object librarians.

• Emulators – The latest information on the Microchip MPLAB

In-Circuit Emulator.

• In-Circuit Debuggers – The latest information on the Microchip in-circuit

debugger, MPLAB ICD 3.

• MPLAB IDE – The latest information on Microchip MPLAB IDE, the Windows

Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager and general editing and debugging features.

• Programmers – The latest information on Microchip programmers. These include

the MPLAB PM3 device programmer and the PICkit™ 3 development programmers.

C compiler; MPASM™ and MPLAB 16-bit

REAL ICE™

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document.

Technical support is available through our web site at: http://microchip.com/support

+ 16 hidden pages

Microchip Technology Audio Development Board User guide

Specifications and Main Features

Frequently Asked Questions

User Manual