Digi Digi One EM Application guide

DigiConnectEM &
Digi Connect Wi‐EM
HardwareReference
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© Digi International Inc. 2006. All Rights Reserved.
The Digi logo is a registered trademark of Digi International, Inc.
Connectware and Digi Connect EM and Digi Connect Wi-EM are trademarks of Digi International, Inc.
NetSilicon, NET+Works, NET+OS, and NET+ are trademarks of NetSilicon, Inc.
All other trademarks mentioned in this document are the property of their respective owners.
Information in this document is subject to change without notice and does not represent a commitment on the part of Digi
International.
Digi provides this document “as is,” without warranty of any kind, either expressed or implied, including, but not limited to,
the implied warranties of fitness or merchantability for a particular purpose. Digi may make improvements and/or changes
in this manual or in the product(s) and/or the program(s) described in this manual at any time.
This product could include technical inaccuracies or typographical errors. Changes are periodically made to the information
herein; these changes may be incorporated in new editions of the publication.
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Contents
About This Guide ..................................................................................................................... 7
Scope of Reference Manual ............................................................................................. 7
Kits Contents .................................................................................................................... 7
Related Documentation .................................................................................................... 9
Support Information ......................................................................................................... 9
Chapter 1: About the Embedded Module.......................................................................... 11
Overview ........................................................................................................................11
Types of Modules........................................................................................................... 12
Connectors: Power and Serial Interface ......................................................................... 15
Connectors: Ethernet Interface....................................................................................... 16
Connectors: Antenna ...................................................................................................... 17
Reset Switch ................................................................................................................... 18
Module LEDs ................................................................................................................. 18
Chapter 2: About the Development Board ........................................................................ 23
Overview ........................................................................................................................23
Basic Description ........................................................................................................... 23
Ports................................................................................................................................ 25
Connectors and Blocks................................................................................................... 27
Power Jack (P17)............................................................................................................ 31
Switches.......................................................................................................................... 32
Development Board LEDs ............................................................................................. 34
Test Points ...................................................................................................................... 36
Chapter 3: Programming Considerations.......................................................................... 39
GPIO............................................................................................................................... 39
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Embedded Module LEDs............................................................................................... 43
Embedded Module Reset ............................................................................................... 44
Flash ............................................................................................................................... 45
Appendix A: Specifications ................................................................................................. 47
Network Interfaces......................................................................................................... 47
Serial Interface ............................................................................................................... 48
Data Rates (bps) ............................................................................................................. 48
Flow Control Options..................................................................................................... 48
Environmental................................................................................................................ 48
DC Characteristics ......................................................................................................... 48
Mechanical .................................................................................................................... 50
Layouts and Dimensions ................................................................................................ 51
Recommended PCB Layouts ......................................................................................... 63
Antenna Information ...................................................................................................... 68
RF Exposure Statement.................................................................................................. 74
Safety Statements ........................................................................................................... 74
Appendix B: Certifications ................................................................................................. 77
FCC Part 15 Class B ...................................................................................................... 77
Industry Canada ............................................................................................................. 78
Declaration of Conformity ............................................................................................. 79
International EMC Standards......................................................................................... 80
Appendix C: Sample Application: TTL Signals to EIA-232............................................ 81
Revision G......................................................................................................................83
Revision F ......................................................................................................................83
Revision E ......................................................................................................................83
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About This Guide
Scope of Reference Manual
The scope of this guide is to enable developers to integrate the Digi Connect EM
or Digi Connect Wi-EM modules into other devices. Graphics illustrate the
placement and dimensions of components for both the modules and the
development board. Information for both the Digi Connect EM and the Digi
Connect Wi-EM are identical unless called out specifically in the manual.
Kits Contents
This manual is intended for customers who use either the Digi Connect EM/Digi
Connect Wi-EM Integration Kit or the Digi Connect EM/Digi Connect Wi-EM
Development Kit, which are described below.
About the Integration Kit
The integration kit is the ideal platform for product evaluation, rapid prototyping,
and integration of the Digi Connect EM or Digi Connect Wi-EM embedded device
server. Targeted specifically at customers who want to take advantage of the Digi
Connect EM or Digi Connect Wi-EM embedded device server with Digi plug-and-
play firmware functionality, both products enable integration of the Digi Connect
EM or Digi Connect Wi-EM embedded module without any extensive embedded
software development with all the additional flexibility and benefits of web user
interface customization and application specific java applets. Included in the Digi
Connect EM or Digi Connect Wi-EM Integration Kits are the following:
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Kits Contents
8  Digi Connect EM & Wi-EM Hardware Reference
Complete development board with EIA-232 serial ports, signal status
indicators, logic analyzer connectors, test points, and a self-contained
GPIO test bed.
Cables
– DB-9 to DB-9 Crossover cable
– DB-9 to DB-9 Modem cable
–RJ-45EthernetCrossover cable
Loopback plug
Power supply
Wrist strap (for grounding)
Digi Connect CD
– sample code
– tools and utilities with source code and libraries
– Microsoft Windows RealPort drivers
Full software and hardware documentation
About the Development Kit
The Digi Connect EM or Digi Connect Wi-EM Development Kit is an easy-to-use
and royalty-free development platform that significantly reduces traditional design
risk and accelerates the overall software development process. Both kits deliver
the integrated building blocks to quickly and cost effectively create your own
custom firmware for a Digi Connect EM or Digi Connect Wi-EM based high-
performance networking solution that fits the specific requirements of your
application.
Based on the NET+Works family of platform solutions, the Digi Connect EM or
Digi Connect Wi-EM development kits enable you to integrate custom network
connectivity into your products quickly by providing a full suite of development
tools inlcuding:
Development board
Cables
Power supply
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Hardware debugger
Complete set of networking protocols and applications software
Related Documentation
See the NS 7520 Hardware Reference for information on the NS 7520 chip.
Support Information
To get help with a question or technical problem or make comments and
recommendations about Digi products and documentation, use the following
contact information.
General Customer Service and Support
Digi International
11001 Bren Road East
Minnetonka, MN 55343
U.S.A.
United States: 1 877-912-3444
Other Locations: 1 952-912-3444
www.digi.com/support
www.digi.com
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Support Information
10  Digi Connect EM & Wi-EM Hardware Reference
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