Analog Devices WVGA/LCD EI3 User manual

a
WVGA/LCD EI3 Extender Board Manual
an EZ-Extender®product
Revision 1.0, April 2012
Part Number
82-000254-01
Analog Devices, Inc.
One Technology Way
Norwood, Mass. 02062-9106

Copyright Information
©2012 Analog Devices, Inc., ALL RIGHTS RESERVED. This document
may not be reproduced in any form without prior, express written consent
from Analog Devices, Inc.
Printed in the USA.
Disclaimer
Analog Devices, Inc. reserves the right to change this product without
prior notice. Information furnished by Analog Devices is believed to be
accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use; nor for any infringement of patents or other rights of
third parties which may result from its use. No license is granted by impli-
cation or otherwise under the patent rights of Analog Devices, Inc.
Trademark and Service Mark Notice
The Analog Devices logo, CrossCore, Blackfin, EZ-KIT Lite, EZ-Board,
and EZ-Extender are registered trademarks of Analog Devices, Inc.
EngineerZone is a trademark of Analog Devices, Inc.
All other brand and product names are trademarks or service marks of
their respective owners.

Regulatory Compliance
The WVGA/LCD EI3 Extender Board is designed to be used solely in a
laboratory environment. The board is not intended for use as a consumer
end product or as a portion of a consumer end product. The board is an
open system design which does not include a shielded enclosure and there-
fore may cause interference to other electrical devices in close proximity.
This board should not be used in or near any medical equipment or RF
devices.
The WVGA/LCD EI3 Extender Board is in the process of being certified
to comply with the essential requirements of the European EMC directive
89/336/EEC (inclusive 93/68/EEC) and, therefore, carries the “CE”
mark.
The extender board contains ESD (electrostatic discharge) sensitive devices.
Electrostatic charges readily accumulate on the human body and equipment
and can discharge without detection. Permanent damage may occur on
devices subjected to high-energy discharges. Proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
Store unused extender boards in the protective shipping package.

WVGA/LCD EI3 Extender Board Manual iii
CONTENTS
PREFACE
Product Overview .......................................................................... vii
Purpose of This Manual ............................................................... viii
Intended Audience .......................................................................... ix
Manual Contents ............................................................................ ix
What’s New in This Manual ............................................................. x
Technical Support ............................................................................ x
Supported Processors ....................................................................... xi
Product Information ....................................................................... xi
Analog Devices Web Site .......................................................... xii
EngineerZone ........................................................................... xii
Related Documents ....................................................................... xiii
USING WVGA/LCD EI3 EXTENDER BOARD
Package Contents .......................................................................... 1-2
Supported Operating Systems ........................................................ 1-2
System Requirements .................................................................... 1-3
Extender Board Installation ........................................................... 1-3
LCD ............................................................................................. 1-4

Contents
iv WVGA/LCD EI3 Extender Board Manual
LCD Touch Controller (AD7879) ................................................ 1-5
Capacitive Touch Controller (AD7147) ........................................ 1-5
Digital Accelerometer (ADXL345) ................................................ 1-6
Expansion Interface III ................................................................. 1-7
Example Programs ........................................................................ 1-7
Board Design Database ................................................................. 1-8
WVGA/LCD EI3 EXTENDER BOARD HARDWARE
REFERENCE
System Architecture ...................................................................... 2-2
Software-Controlled Switches (SoftConfig) ................................... 2-3
Overview of SoftConfig ........................................................... 2-3
Programming SoftConfig on the WVGA/LCD EI3
Extender Board ....................................................................... 2-7
LCD SPI Chip Select ............................................................ 2-13
PPICLK_DIR Select ............................................................. 2-13
LCD Mode Select ................................................................ 2-13
AD7879 PENIRQ Signal ...................................................... 2-13
AD7879 SPI Chip Select ....................................................... 2-14
AD7147 Interrupt Signal ...................................................... 2-14
ADXL345 Interrupt Signals .................................................. 2-14
ADXL345 TWI/SPI Mode Select .......................................... 2-14
ADXL345 SPI Chip Select .................................................... 2-15
Connectors ................................................................................. 2-16
Expansion Interface III (EI3) Connectors (J1–2) .................... 2-17

WVGA/LCD EI3 Extender Board Manual v
Contents
Expansion Interface III (EI3) Connectors (P1–2) ................... 2-17
Power Connector (P4) ........................................................... 2-17
LCD Connector (P5) ............................................................. 2-18
Power LED (LED1) .................................................................... 2-18
WVGA/LCD EI3 EXTENDER BOARD BILL OF
MATERIALS
WVGA/LCD EI3 EXTENDER BOARD SCHEMATIC
Title Page .................................................................................... B-1
EI3 Connectors/GPIO Extender ................................................... B-2
EI3 Unused Connectors ............................................................... B-3
Buffers/Clock/Pull-Ups ............................................................... B-4
Soft Config and Reset .................................................................. B-5
LCD Connector and Mode Switches ............................................. B-6
Accelerometer/Touch Screen/Cap Touch/Power ............................ B-7
TWI/SPI Flash ............................................................................. B-8
INDEX

vi WVGA/LCD EI3 Extender Board Manual

WVGA/LCD EI3 Extender Board Manual vii
PREFACE
Thank you for purchasing the WVGA/LCD EI3 Extender Board, an
EZ-Extender®for EZ-KIT Lite®/EZ-Board®evaluation systems with the
Expansion Interface III (EI3).
The EZ-KIT Lite/EZ-Board and WVGA/LCD EI3 Extender Board are
designed to be used in conjunction with the CrossCore®Embedded Stu-
dio (CCES) development environment.
To learn more about Analog Devices development software, go to
http://www.analog.com/processors/tools/.
Product Overview
The WVGA/LCD EI3 Extender Board is a separately sold daughter board
that plugs onto the IE3 of an EZ-KIT Lite/EZ-Board evaluation system.
The extender board aids the design and prototyping phases of embedded
processor-targeted applications.
The board extends the capabilities of the evaluation system by providing a
connection between the parallel peripheral interface (PPI) of the processor
and on-board 4.1 inch liquid crystal display (LCD). The serial peripheral
interface (SPI) and two-wire interface (TWI) of the processor are used to
communicate with the LCD, AD7879 touch screen controller, AD7147
capacitive touch controller, and ADXL345 digital accelerometer on the
extender.

Purpose of This Manual
viii WVGA/LCD EI3 Extender Board Manual
The product features:
• LCD with touch screen
• NEC NL8048HL11-01B 4.1 inch WVGA LCD with resis-
tive touch
• 800 (horizontal) x 480 (vertical) landscape
• LCD backlight
• LCD touch screen controller
• Analog Devices AD7879 touch screen controller
• Capacitive touch controller
• Analog Devices AD7147 capacitive touch controller
• Four push buttons and one scroll wheel
• Digital accelerometer
• Analog Devices ADXL345 3-axis digital accelerometer
• Software-controlled switches for board configuration
• Expansion Interface III
• No power supply required: derives power from the EZ-KIT
Lite/EZ-Board
• CE certified
Purpose of This Manual
The WVGA/LCD EI3 Extender Board Manual provides instructions for
installing the product hardware (board). The text describes operation and
configuration of the board components and provides guidelines for run-