Digi Digi Connect EM DC-EM02T-JT Guida all'applicazione

Digi Connect EM™ and Digi Connect

Wi-EM™

Hardware Reference

Revision history—90000632

Revision Date Description

EMarch, 2005 Added Japan certification, updated desktop antenna and

sensitivity information and improved illustrations.

F August, 2005 Added Ethernet pinouts and product weights, and updated

antenna specifications.

G Ocober, 2006 Updated dimension drawings and Tyco antenna

specifications.

H January, 2010 Corrected part numbers and revised schematics.

J August, 2017 Updated branding and modified regulatory and certification

information as required by RED (Radio Equipment Directive).

Trademarks and copyright

Digi, Digi International, and the Digi logo are trademarks or registered trademarks in the United

States and other countries worldwide. All other trademarks mentioned in this document are the

property of their respective owners.

Disclaimers

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, 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.

Warranty

To view product warranty information, go to the following website:

www.digi.com/howtobuy/terms

Send comments

Documentation feedback: To provide feedback on this document, send your comments to

techcomm@digi.com.

Customer support

Digi Technical Support: Digi offers multiple technical support plans and service packages to help our

customers get the most out of their Digi product. For information on Technical Support plans and

pricing, contact us at +1 952.912.3444 or visit us at www.digi.com/support.

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 2

Contents

About this guide

Scope of the reference manual 6

Kits contents 6

About the integration kit 6

About the development kit 7

Related documentation 7

About the Embedded module

Digi Connect EM and Digi Connect Wi-EM overview 8

Types of modules 8

Choosing a module for your product 8

Digi Connect Wi-EM antenna 10

Connectors: power and serial interface 11

Power and serial interface 11

Connectors: Ethernet interface 12

Connectors: antenna 12

Wi-EM antenna connectors 12

Reset switch 13

Reset switch location 13

Module LEDs 14

Digi Connect EM pin header locations (top view) 15

Ethernet pin header, P13 15

About the development board

Overview 16

Basic description 16

Ports 17

Serial port 1 (P1) and serial port 2 (P2) 17

Ethernet port (P12) 17

GPIO port (P3) 18

Connectors and blocks 20

JTAG debugger connector (P4) 20

SPI Connector (P11) 20

SPI jumper block 21

Logic signal analyzer header (P6) 22

Main connector (P8) 23

Power jack (P17) 24

Switches 25

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 3

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 4

Reset switch (SW5) 25

Serial/GPIO switch bank 3 (SW3) and switch bank 4 (SW4) 25

GPIO switch bank 1 (SW1) and 2 (SW2) 26

Development board LEDs 27

Test points 29

Programming considerations

GPIO 30

GPIO registers 30

GPIO pin use 31

Embedded Module LEDs 32

About embedded module LEDs 33

Embedded Module Reset 33

Flash 34

Specifications

Network interfaces 35

Digi Connect Wi-EM embedded module 35

Digi Connect EM embedded module 35

Serial interface 35

Data rates (bps) 35

Flow control options 36

Environmental 36

DC characteristics 36

Mechanical 37

Layouts and dimensions 39

Digi Connect Wi-EM (w/LED array) 40

Digi Connect Wi-EM (w/LED pin headers) 42

Digi Connect EM (w/RJ-45 and LED array) 44

Digi Connect EM (with Ethernet and LED pin headers) 46

Recommended PCB layouts 48

Digi Connect Wi-EM (w/LED array) 48

Digi Connect Wi-EM (w/LED pin headers) 49

Digi Connect EM (w/RJ-45 and LED array) 50

Digi Connect EM (with Ethernet and LED pin headers) 51

Antenna information 52

Antenna strength 52

Antenna specifications for North America 53

Dipole antenna dimensions 54

Desktop antenna dimensions 55

PCB mount antenna dimensions 56

RF Exposure statement 56

Safety statements 56

Regulatory information

United States (FCC) 59

OEM labeling requirements 59

FCC notices 59

RF Exposure statement 60

Modifications (FCC 15.21) 60

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 5

Europe 60

Declarations of conformity 61

International EMC standards 61

Sample application: TTLsignalstoEIA-232

About this guide

Scope of the reference manual

The purpose of this document 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:

nComplete development board with EIA-232 serial ports, signal status indicators, logic analyzer

connectors, test points, and a self-contained GPIO test bed.

nCables

lDB-9 to DB-9 Crossover cable

lDB-9 to DB-9 Modem cable

lRJ-45 Ethernet Crossover cable

nLoopback plug

nPower supply

nWrist strap (for grounding)

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 6

About this guide Related documentation

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 7

nDigi Connect CD

lSample code

lTools and utilities with source code and libraries

lMicrosoft Windows RealPort drivers

nFull 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:

nDevelopment board

nCables

nPower supply

nHardware debugger

nComplete set of networking protocols and applications software

Related documentation

See the NS 7520 Hardware Reference for information on the NS 7520 chip.

About the Embedded module

Digi Connect EM and Digi Connect Wi-EM overview

The embedded modules are part of Digi Connect family of device servers that provide simple, reliable

and cost-effective network connections for serial devices. They provide fully transparent serial device

connectivity over industry-standard Ethernet connections and allow 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 robust

on-board TCP/IP stack and 10/100 Base-T Ethernet or wireless support. Features include the

following:

n32-bit NS7520 processor with ARM7TDMI core

n4MB Flash and 8MB RAM on board

n2 High Speed Serial Ports

nSPI Master Mode Interface

n9 General Purpose Input/Output Port Options

nAvailable with Digi plug-and-play firmware

nNetSilicon NET+Works platform for embedded software development

From medical systems to building control and industrial automation, in virtually any application where

embedded serial connectivity over Ethernet is needed, the embedded module is the ideal choice,

delivering high-performance functionality.

Cautions

To guard against damage to the module due to electrostatic discharge (ESD), do not remove it from

its protective packaging until you have been properly grounded. To ground yourself, put the wrist

strap on (included in the package) and then attach the clip to a metal surface.

nInput voltage for the module is 3.3 VDC.

Types of modules

The following describes the three types of Digi Connect EM and three types of Digi Connect Wi-EM

modules:

Choosing a module for your product

Although any of the embedded modules can be designed into your product, a JTAG header would

typically be used only for debugging during the development process. The Digi Connect EM module

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 8

About the Embedded module Types of modules

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 9

part number DC-EM-02T-S or DC-EM-02T-C is appropriate when its integrated LEDs and RJ-45

Ethernet connectors are accessible and visible to the end-users of your product. The Digi Connect EM

module part number DC-EM-02T-NC or DC-EM-02T-JT is the right choice when you want more

control over RJ-45 Ethernet connector and LED locations or when you will provide custom connectors

or indicators.

The Digi Connect Wi-EM module part number DC-WEM-02T-C or DC-WEM-02T-S is appropriate

when its integrated LEDs are accessible and visible to the end-users of your product. The Digi Connect

Wi-EM module part number DC-WEM-02T-JT or DC-WEM-02T-NC is the right choice when you want

more control over LED locations or when you will provide custom connectors or indicators.

Please refer to the Digi website www.digi.com for part number and ordering information for the

modules.

Digi Connect EM Modules

Model Description Figure

DC-EM-

02T-JT

nUsed for development purposes only

nJTAG interface

nPin headers for Ethernet and LED functionality.



DC-EM-

02T-NC

nNo JTAG interface

nPin headers for Ethernet and LED functionality

nOrdered independently of development kit for

use in your implementation

DC-EM-

02T-S

DC-EM-

02T-C



nNo JTAG interface

nRJ-45 Ethernet connector and LED array

nOrdered independently of either the

development or integration kit for use in your

implementation.



About the Embedded module Types of modules

Digi Connect EM and Digi Connect Wi-EM Hardware Reference 10

Digi Connect Wi-EM Modules

Model Description Figure

DC-WEM-

02T-JT

nUsed for development purposes only

nJTAG interface

nPin headers LED functionality

nDual RP-SMA Antenna Connector.



DC-WEM-

02T-NC

nNo JTAG interface

nPin headers LED functionality

nDual RP-SMA Antenna Connector

nOrdered independently of development kit for

use in your implementation



DC-WEM-

02T-C

DC-WEM-

02T-S

nNo JTAG interface

nLED array

nDual RP-SMA Antenna Connector

nOrdered independently of either development

or integration kit for use in your

implementation.



Note:

nS: No JTAG, w/ LED array, w/RJ-45/antenna connectors, for use with Digi Firmware

nC: No JTAG, w/LED array, RJ-45 / antenna connectors, for use with Custom Firmware

nNC: No JTAG, w/LED pin header, w/o RJ-45 connector (for Digi Connect EM), w/antenna

connectors (for Digi Connect Wi-EM), for use with custom firmware (not shown)

nJT: w/ JTAG, w/pin header, w/o RJ-45 connector (for Digi Connect EM), w/ antenna connectors

(for Digi Connect Wi-EM), for use with custom firmware development

Digi Connect Wi-EM antenna

The Digi Connect Wi-EM is available with dual-diversity antenna connectors. The right antenna (P2) is

always used for transmit and receive. The left antenna is receive only. The antenna will choose the

best signal (pin vs. socket). The Digi Connect Wi-EM always has two antenna connectors but using the

second antenna is optional.

The antenna are connected to the module with reverse polarity SMA connectors (sub-miniature size

A). The antenna fit the connectors on the module only one way to ensure a proper connection. The

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