Digi Connect ME Application guide

Digi Connect ME
Hardware Reference

 Digi International Inc. 2003. All Rights Reserved.
The Digi logo is a registered trademark of Digi International,
Inc.
Connectware and Digi Connect ME 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 Document ................................................................................................................v
Chapter 1: About the Digi Connect ME Module................................................................1
Overview..........................................................................................................................1
Types of modules .............................................................................................................2
Dimensions.......................................................................................................................3
Recommended PCB layout ..............................................................................................4
Connectors: power and device interface ..........................................................................5
Connectors: Ethernet interface.........................................................................................7
LEDs.................................................................................................................................8
Chapter 2: About the Development Board .........................................................................9
Overview..........................................................................................................................9
Basic description ............................................................................................................10
Port descriptions.............................................................................................................12
Connectors and blocks....................................................................................................16
Switches..........................................................................................................................21
LEDs...............................................................................................................................23
Power jack......................................................................................................................26
Test points ......................................................................................................................27

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Chapter 3: Programming Considerations ........................................................................ 29
Overview........................................................................................................................29
GPIO .............................................................................................................................. 30
LEDs .............................................................................................................................. 32
Reset............................................................................................................................... 33
Flash............................................................................................................................... 34
Memory..........................................................................................................................34
Appendix A Module Specifications....................................................................................35
Mechanical..................................................................................................................... 35
Environmental................................................................................................................ 35
Network interface........................................................................................................... 36
Serial interface ............................................................................................................... 36
Data rates (bps) .............................................................................................................. 36
Flow control options ...................................................................................................... 36
GPIO .............................................................................................................................. 37
DC characteristics .......................................................................................................... 37
Appendix B Certifications.................................................................................................. 39
FCC Part 15 Class B ...................................................................................................... 39
Industry Canada ............................................................................................................. 40
Declaration of Conformity............................................................................................. 41
International EMC standards ......................................................................................... 42
Safety standards ............................................................................................................. 42

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About This Document
Objective
The purpose of this document is to enable developers to integrate the Digi Connect ME
embedded module with other devices, enabling these devices to make use of the module’s
rich networking features.
Audience
This document is written for hard- and software developers who are responsible for
designing networked devices.

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About the Digi Connect ME
Module
CHAPTER 1
Overview
The Digi Connect ME embedded module provides fully transparent device connectivity
over industry-standard Ethernet connections and allows both equipment manufacturers and
systems integrators to network-enable products at a fraction of the time and cost required to
develop a custom solution. It is a highly flexible and compact single component solution
with a serial port, GPIO ports, and a robust on-board TCP/IP stack and 10/100 BASE-T
Ethernet support.
From medical systems to building control and industrial automation, in virtually any
application where embedded device connectivity over Ethernet is needed, the Digi Connect
ME embedded module is the ideal choice, delivering high-performance functionality.
This chapter provides information about the module hardware and contains the following
topics:
!"Types of modules" on page 2
!"Dimensions" on page 3
!"Recommended PCB layout" on page 4
!"Connectors: power and device interface" on page 5
!"Connectors: Ethernet interface" on page 7
!"LEDs" on page 8

Types of modules
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Types of modules
The type of module that you will use for hardware integration depends on the kit you are
using. If you are using an integration kit, you will be using a module without a JTAG
interface. If you are using a development kit, you will be using a module with a JTAG
interface.
Note JTAG is a commonly used term that is also referred to as IEEE 1149.1, an
industry standard test protocol. JTAG is an abbreviation for the
European Joint Test Action Group, which invented the first versions of
the IEEE 1149.1 interface. The JTAG interface, along with the other
development tools, enables you to download, run and debug programs
on the module.
The following figures show the two types of modules.
Module without JTAG Interface
Module with JTAG Interface
00000018
00000017
JTAG interface