Digi Connect ME 9210 Application guide

DigiConnectWi‐ME®9210and
DigiConnectME®9210
HardwareReference
90001247_C
5/23/2012

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© 2012 Digi International Inc.
All rights reserved.
Digi, Digi International, the Digi logo, a Digi International Company, Digi Connect, Digi Connect Wi-ME and Digi Connect
ME 9210, ConnectCore, NET+ and NET+OS are trademarks or registered trademarks of Digi International, Inc. in the
United States and other countries worldwide. All other trademarks are the property of their respective owners.
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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About This Document
Scope of the Reference Manual
The purpose of this document is to enable developers to integrate the Digi Connect Wi-ME and Digi
Connect ME 9210 embedded modules with other devices, enabling these devices to make use of the
module’s rich networking features.
Note: Unless mentioned specifically by name, the products will be referred to as the
embedded modules or modules. Individual naming is used to differentiate product
specific features.
Related Documentation
See the NS9210 Hardware Reference for information on the NS9210 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/eservice/
eservicelogin.jsp

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Contents
About This Document ................................................................................................................3
Related Documentation....................................................................................................3
Support Information.........................................................................................................3
Chapter 1: Contents..............................................................................................................4
Chapter 2: About the Embedded Modules .........................................................................6
Overview..........................................................................................................................6
Types of Modules.............................................................................................................7
Connectors: Power and Device Interface.........................................................................9
Connectors: Ethernet Interface.......................................................................................11
Connectors: Antenna......................................................................................................12
Module LEDs.................................................................................................................13
Chapter 3: About the Development Board .......................................................................14
Overview........................................................................................................................14
Basic Description ...........................................................................................................15
Port Descriptions............................................................................................................17
Connectors and Blocks...................................................................................................20
Switches and Push Buttons.............................................................................................25
Development Board LEDs .............................................................................................26
Power Jack P15 ..............................................................................................................28
Test Points......................................................................................................................29
Chapter 4: Programming Considerations.........................................................................30
Overview........................................................................................................................30
Module Pinout................................................................................................................31
Reset...............................................................................................................................33
Memory..........................................................................................................................34
Appendix A: Module Specifications....................................................................................35
Network Interface...........................................................................................................35
Serial Interface ...............................................................................................................36
Data Rates (bps) .............................................................................................................36
DC Characteristics..........................................................................................................36

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Power Management........................................................................................................38
Thermal Specifications...................................................................................................39
Mechanical .....................................................................................................................40
Bar Code.........................................................................................................................41
Dimensions.....................................................................................................................41
Recommended PCB Layout...........................................................................................47
Antenna Information ......................................................................................................48
RF Exposure Statement..................................................................................................50
Safety Statements...........................................................................................................50
Appendix B: Certifications..................................................................................................51
FCC Part 15 Class B.......................................................................................................51
Industry Canada..............................................................................................................53
Declaration of Conformity .............................................................................................53
International EMC Standards.........................................................................................55
Appendix C: Sample Application: PoE Power Supply......................................................57
Appendix D: Sample Application: TTL Signals to EIA-232.............................................60

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About the Embedded Modules
CHAPTER 1
Overview
The Digi Connect Wi-ME 9210 and Digi Connect ME 9210 b/g/n is a fully customizable and secure
802.11b/g/n wireless embedded module that provides integration flexibility in a variety of
connection options. Built on the new Digi NS9210 processor in combination with a 802.11b/g/n Wi-
Fi radio, it is pin-compatible with the existing Digi Connect Wi-ME 7520 and Digi Connect ME
7520 802.11b module allowing customers to easily migrate to the next-generation version of the
product.
The Digi Connect ME 9210 is an ultra-compact embedded module based on Digi’s powerful 75
MHz NS9210 processor. It allows customers to implement the next generation of leading network-
enabled products and maintains full form factor and pin-compatibility with the existing Digi
Connect ME family.
The NS9210 processor provides a host of features such as an ARM926EJ-S core running at speeds
from 75-150MHz, on-chip AES encryption engine, one PIC, a serial port, SPI and I2C interfaces,
PWM, and others. Most importantly, it is a “drop-in” replacement for the NS7520, which means that
is the ideal upgrade vehicle to deliver a next-generation design.
The integrated FIM on the NS9210 processor offer interface flexibility allowing the modules to
provide high performance interface functionality and unique software-driven configuration
flexibility by dynamically loading software support for application specific interfaces, e.g. UART,
CAN, USB device, 1-Wire, SDIO, and others.
The Digi Connect Wi-ME 9210 and Digi Connect ME 9210 embedded module offers freedom and
flexibility of professional embedded software development provided by the easy-to-use, cost-
effective and complete Digi JumpStart Kits™.
From medical systems to building control and industrial automation, in virtually any application
where embedded device connectivity over a wireless network is needed, embedded modules are the
ideal choice, delivering high-performance functionality.
Note: Unless mentioned specifically by name, the products will be referred to as the embedded
modules or modules. Individual naming is used to differentiate product specific features.
This chapter provides information about the modules hardware and contains the following topics:
"Types of Modules" on page 7
"JTAG Jumper" on page 11
"Connectors: Antenna" on page 12
"Module LEDs" on page 13

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Types of Modules
There are two types of modules. One module utilizes Digi Plug-and-Play Firmware, while the
second is customizable with the option to develop a firmware application in NET+OS. If you are
developing your firmware application in NET+OS, 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.
Note: -S: No JTAG for use with Digi Plug-and-Play Firmware
-C: No JTAG for use with custom NET+OS applications
-JT: With JTAG for use with custom firmware development
Digi Connect Wi-ME 9210 Modules
Model Description Figure
DC-WME-Y402-JT
DC-WME-Y413-
LX-JT
Used for development
purposes only
JTAG interface
DC-WME-Y402-C
DC-WME-Y413-S
DC-WME-Y413-LX
No JTAG interface
Ordered
independently for use
in your
implementation.

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Digi Connect ME 9210 Modules
Model Description Figure
JTAG
DC-ME-Y401-JT
DC-ME-Y402-JT
DC-ME-Y402-LX-
JT
Non-JTAG
DC-ME-Y401-C
DC-ME-Y402-C
DC-ME-Y402-LX
DC-ME-Y402-S
DC-ME-Y413-LX
JTAG interface
Ordered
independently for use
in your
implementation

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Connectors: Power and Device Interface
Power and Device Interface Connector
Viewed from bottom of the module:
Module Front
ME 20 Pin
Connector
Wi-ME 14 Pin
Connector
Wi-ME Pin 2
ME Pin 1 ME Pin 2
ME Pin 19 ME Pin 20
Wi-ME Pin 1
>
>
>
>
>
>
Bottom View
Power and Device Interface Connector Pin Assignments
Signal
DescriptionME Wi-ME
Pin # Function Pin # Function
1 VETH+ —
ME: Power Pass-Thru+
Wi-ME: Position Removed
2 VETH- — ME: Power Pass-Thru-
Wi-ME: Position removed
3-6 — — Position removed
7 RXD 1 RXD Receive Data (Input)
8 TXD 2 TXD Transmit Data (Output)
9 RTS 3 RTS Request to Send (Output)
10 DTR 4 DTR
Data Terminal Ready (Output)
11 CTS 5 CTS Clear to Send (Input)
12 DSR 6 DSR Data Set Ready (Input)

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Note: The development board provides connectors for an optional PoE application kit.
Note: Any pins not used should be left floating.
Note: See "Module Pinout" on page 31 for detailed IO configuration information.
13 DCD 7 DCD Data Carrier Detect (Input)
14 /RESET 8 /RESET Reset
15 +3.3V 9 +3.3V Power
16 GND 10 GND Ground
17, 18 — 11, 12 —
Not accessible with Digi Plug-and-Play
Firmware. If using a development kit, see
"Module Pinout" on page 31 for detailed IO
configuration information.
19 — 13 — Reserved. Do not connect.
20 /INIT 14 /INIT Software Reset
Power and Device Interface Connector Pin Assignments
Signal
DescriptionME Wi-ME
Pin # Function Pin # Function

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Connectors: Ethernet Interface
The Ethernet connector is an 8-wire RJ-45 jack that meets the ISO 8877 requirements for 10/
100BASE-T. See the following figure and table for pin orientation and pin assignments.
Note: Pin orientation and assignments are the same for modules with or without a JTAG
connector.
Ethernet Interface Pin Orientation
JTAG Jumper
The J1 controls the way in which the Digi Connect Wi-ME 9210 and Digi Connect ME 9210 JTAG
device responds to pin 14 being pulled low.
Ethernet Interface Pin Assignments
Pin
1Pin 2Pin 3Pin 4Pin 5Pin 6Pin 7Pin 8
TXD+ TXD- RXD+ EPWR+ EPWR+ RXD- EPWR- EPWR-
Transmit
Data + Transmit Data - Receive Data +
Power
from
Switch +
Power
from
Switch +
Receive
Data -
Power
from
Switch -
Power
from
Switch -
Jumper Result
None No reset
1-2 Hard reset
2-3 Soft reset

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Hard Reset
The embedded modules support a hardware reset on pin 8 of the 14-pin header. Pulling pin 8 low
with an open drain driver will force the module into a hard reset state. The module will remain in the
reset state as long and pin 8 is held low and will leave this reset state ~250mS after pin 8 goes high.
Do not actively drive pin 8 high and do not allow the rise time of the pin 14 to be longer than 100uS.
When used with the development board, this pin is wired to reset button SW4, which means it acts
as a hard reset button.
Connectors: Antenna
The Digi Connect Wi-ME 9210 and Digi Connect ME 9210 is available with 1 RP-SMA connector.
The antenna is connected to the module with a reverse polarity SMA connector (sub-miniature size
A). The antenna only fits on the module one way to ensure a proper connection.
Jumper is in
the 1/2 position
Antenna Specifications
Type Dipole
Part number DG-ANT-20DP-BG
Gain 2 dBi
Caution: This Part 15 radio device operates on a non-interference basis
with other devices operating at this frequency when using the antennae
listed in the Antenna Specification table. Any changes or modification to
user’s authority to operate the device.
the product not expressly approved by Digi International could void the

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Module LEDs
LED Locations
Note: The LEDs are the same for a module with or without a JTAG connector.
LED Behaviors
LED Digi Plug and Play Firmware
Digi Connect Wi-ME 9210 and Digi
Connect ME 9210 Customizable Modules
Left
Associated/Diagnostic:
On - unit is associated with an access point.
Blinking slowly - unit is in ad hoc mode.
Blinking quickly - unit is scanning for a network.
Same as Digi Plug-and Play
Firmware (Network link
status).
Right Network Activity:
Blinking -network data is transmitted or received. This LED is software
programmable.
Network Activity
Associated/Diagnostic

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About the Development Board
CHAPTER 2
Overview
The development board is a hardware platform from which you can determine how to integrate the
embedded modules into your design. The board consists of the following main features:
Socket for connecting the embedded modules
JTAG connection (for use with the development kit only)
GPIO switches
Serial and GPIO ports
Power input
This chapter provides information on development board components and contains the topics listed
below. For more detailed information on the development board, see the schematic and mechanical
drawings on the CD that accompanies your kit. Once you’ve installed the software that comes with
your kit, you can access the schematic from the Start menu.
"Basic Description" on page 15
"Placement of Module" on page 17
"Connectors and Blocks" on page 20
"Switches and Push Buttons" on page 25
"Development Board LEDs" on page 26
"Power Jack P15" on page 28
"Test Points" on page 29

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Basic Description
The development board contains connectors, switches, and LEDs for use while integrating the
embedded module into your design. See the following figure for the location of the connectors,
switches, and LEDs. Additionally, the board provides test points (not shown on the figure). For
more information about test points, see "Test Points" on page 29.
Board Layout and Connector Locations:

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"Port Descriptions" on page 17
"Connectors and Blocks" on page 20
"Switches and Push Buttons" on page 25
"Development Board LEDs" on page 26
"Power Jack P15" on page 28
See the following figures for placement of either module onto the development board.
Connectors, Switches and LEDs
Board Description Markers 1-5
12345
Secondary
Serial Port, P2
Primary Port
LEDs, CR5 -
CR18
GPIO Switch
Bank, SW3 Prototyping Area, P4 JTAG Header, P12
Connectors, Switches and LEDs
Board Description (continued) Markers 6-10
678910
232 Enable
Jumper
Block, P5
Embedded
Module
Connector,
P10
JTAG
Connector,
P11
Primary
SerialPort,P1 GPIO Port, P7
Connectors, Switches and LEDs
Board Description (continued) Markers 11-15
11 12 13 14 15
Digital I/O
LEDs, CR19 -
CR23
Logic
Analyzer
header, P3
POE Source
LED, CR24 Reset Switch,
SW4
User
Pushbuttons,
SW1 & SW2
Connectors, Switches and LEDs
Board Description (continued) Markers 16-21
16 17 18 19 20 21
Power Jack,
P15 On/Off switch, SW5
Secondary
Port LEDs
CR1-CR4
-48V DC
output from
module P13
12V output
from PoE
module P14
Current
Measurement
Option P8

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Placement of Module
Port Descriptions
The development board provides the following ports:
Primary Serial Port, P1
Secondary Serial Port, P2
GPIO Port, P7
See the figure titled "Board Layout and Connector Locations:" on page 15 for the location of the
ports. The following sections describe the ports.
Primary Serial Port, P1
The Primary Serial Port is a DB-9 male connector that is labeled as P1 on the development board.
See the following figure for pin orientation; see the following table for pin assignments.
Caution: When handling the development board, wear a grounding wrist
strap to avoid ESD damage to the board.

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Primary Serial Port Pin Orientation
Secondary Serial Port, P2
The Secondary Serial Port is a DB-9 male connector that is labeled as P2 on the development board.
The port is used only with the Digi Connect ME 9210 modules with JTAG interfaces for debugging
purposes. See the following figure for pin orientation; see the following table for pin assignments.
Secondary Serial Port Pin Orientation
Pin 1 Pin 5
Pin 6 Pin 9
Primary Serial Port Pin Assignments
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
DCD RXD TXD DTR GND DSR RTS CTS —
DataCarrier
Detect Receive Data Transmit Data
Data
Terminal
Ready
Signal/
Chassis
Ground
Data Set
Ready Request To Send Clear To Send —
Pin 1 Pin 5
Pin 6 Pin 9

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RS232-Enable Pin Header, P5
P5 is used to enable or disable serial port RS232s transceiver. Shorting P5 pins 1 and 2 will enable
the RS232 transceiver. Shorting P5 pins 2 and 3 will disable the RS232 transceiver.
GPIO Port, P7
The GPIO port is a 9-pin male right-angle connector that is labeled as P7 on the development board.
See the following figure for pin orientation; see the following tables for pin assignments. For input
and output threshold specifications, see "DC Characteristics" on page 36. Note that each signal has a
220 ohm series resistor between the P7 pin and the module (except GND).
Note: The development board is shipped with a 9-pin screw-flange plug attached to the GPIO
port.
GPIO Port Pin Orientation
Secondary Serial Port Pin Assignments
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
—RXD TXD —GND — — — —
—Receive Data Transmit Data —Signal/ Chassis
Ground — — — —
Pin 1 Pin 9
GPIO Port Pin Assignments
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
Signal GPIO-1 GND GPIO-2 GND GPIO-3 TXD_TTL GPIO-4 RXD_TTL GPIO-5

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Connectors and Blocks
The development board provides the following connectors and blocks:
Embedded Module Connector, P10
The Digi Connect Wi-ME module does not provide pins 1-6
JTAG Debugger Connector, P12.
-48V DC input to PoE module (Digi Connect ME 9210 must be connected to a
Powering Device for this feature.), P13
12V DC output from PoE module into Dev Board Power Supply, P14
Logic Analyzer Header, P3
See the figure titled "Board Layout and Connector Locations:" on page 15 for the location of the
connectors and blocks. The following sections describe the connectors and blocks.
Embedded Module Connector, P10
The Digi Connect ME embedded module Connector is a 20-pin female vertical header that is
labeled P10 on the development board. See the following figure for pin orientation; see the
following table for pin assignments.
Note: The figure shows the connector using the same orientation as shown in the figure titled
"Board Layout and Connector Locations:" on page 15.