Digi 50M1746 User Manual

Digi Connect™ Wi-Wave

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802.11 b/g Hardware
Reference

Part number/version: 90000797_B
Release date: March 2010
www.digiembedded.com

©2010 Digi International Inc.
Printed in the United States of America. All rights reserved.

Digi, Digi International, the Digi logo, a Digi International Company, Jump Start Kit, ConnectCore, NET+,
NET+OS and NET+Works 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.

Information in this document is subject to change without notice and does not represent a committment
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 made periodically
to the information herein; these changes may be incorporated in new editions of the publication.

Digi International, Inc.
1100 1 Bren Road East
Minnetonka, MN 55343 U.S.A.
United States: [phone]
Other locations: [phone]

www.digiembedded.com

Contents

Chapter 1:About the Module..................................................................7

Features 7
What’s on the module? 8

Digi Connect Wi-Wave 802.11 b/g module edge connector 8
Digi Connect Wi-Wave 802.11 b/g module edge connector: Pinout 9
U.FL connectors 9

USB peripheral controller 10

802.11b/g modes and channels 10
Channel allocations 10

Voltage regulators 11
Voltage monitor — Reset generator 11
LEDS 11
Power 11

DISABLE signal 11
Power Requirements 12

Chapter 2: About the Development Board ...........................................13

What’s on the development board 13

Features 13
The development board 14
Unpopulated components 14

Digi Connect Wi-Wave802.11 b/g module connector, J52 15
LEDs 17

LED DS1 17
LED DS2 17
Debug (signal) breakout header LEDs 17

Switches and reset functionality 18

Voltage monitor 18
Alternative methods to trigger RESET# 18

Power supply 19

Input power jack, J3 19
Input power supply 19

USB peripheral interface, J4 20

USB peripheral jack, J4 20

Debug breakout header, P21 21

3

Debug breakout header signal map 21
W_DISABLE# signal 22

U.FL and RP-SMA connectors 23

U.FL connectors 23
U.FL cables 23
RP-SMA connectors 24
For more information 24

Chapter 3: Using the Antenna ............................................................ 25

Necessary Conditions for Integration 25
Connect

Wi-Wave 802.11 b/g antenna configurations 26

General information 26

Antenna switch 26

Cable Specification: U.FL/W.FL to RP-SMA 26

Attributes 26

Antenna specifications: 802.11 a/b/g antenna 27

Attributes 27
Dimensions 28

End User Manual: RF Exposure Statements 28

Appendix A:Specifications.................................................................. 29

Environmental specifications 29
WLAN interface 29
Mechanical dimensions 30
Power requirements 31
RF exposure statement 31
Safety statements 31
Module and development board dimensions 32

Module dimensions 32
Development board dimensions 33

Appendix B: Certifications.................................34

FCC Part 15 Class B 34

4 Digi Connect Wi-Wave 802.11b/g Hardware Reference, Rev. B, 2/2010

Using this Guide

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This guide provides information about the Digi Connect Wi-Wave 802.11 b/g
embedded core module.

Conventions used
in this guide

This table describes the typographic conventions used in this guide:

This convention Is used for

italic type Emphasis, new terms, variables, and document titles.

monospaced type

Digi information

Related
documentation

Documentation
updates

For additional documentation, see the Documentation folder in the Start menu.

Digi occasionally provides documentation updates on the Web site
(www.digiembedded.com/support).

Be aware that if you see differences between the documentation you received in
your package and the documentation on the Web site, the Web site content is the
latest version.

Filenames, pathnames, and code examples.

5

Contact
information

For more information about your Digi products, or for customer service and
technical support, contact Digi International.

To contact Digi International by Use

Mail Digi International, Inc.

11001 Bren Road East
Minnetonka, MN 55343

U.S.A
World Wide Web www.digiembedded.com
Eservice Support www.digi.com/support/eservice/login.jsp
Telephone (U.S.) (952) 912 -34 44 or (877 ) 91 2-3444
Telephone (other locations) [phone] or [phone]

6 Digi Connect Wi-Wave 802.11 b/g Hardware Reference, Rev. B 2/2010

Chapter 1:About the Module

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The Digi Connect Wi-W ave module is an 802.11b/g WLAN communications module

for use in embedded applications. The module is a single circuit card packaged in a
PCI Express Mini Card form factor, and supports all the RF, analog, and digital
circuitry necessary to implement WLAN functionality. Using Digi’s baseband
processor technology, this module is the ideal choice for embedded applications
requiring long-term product availability in conjunction with reliability and easy
design integration.

The primary interface to the module is through a standards-compliant PCI Express
Mini Card edge connector, using a USB 2.0 full speed/high speed link for
communication with the host system.

Features

Note:

The Digi Connect Wi-Wave 802.11 b/g module also provides a dual diversity antenna
option through two on-board U.FL connectors, which allow for cabling to remote 2.4
GHz antennas.

 Ultra-compact and standards-based form factor
 Easy design integration through USB 2.0 full speed/high speed interface
 Dual diversity antenna option through two on-module U.FL antenna connectors
 Digi 802.11b/g baseband processor technology for long-term product

 -40°C to +85°C operating temperature for harsh environments

The Digi Connect Wi-Wave 802.11 b/g edge connector pinout is compliant
with the PCI Express Mini Card Electromechanical Specification, Revision 1.1
(March 28, 2005) with this exception: the Digi Connect Wi-Wave 802.11 b/g
has a 7-wire Dynamic C interface mapped to pins 37, 39, 41, 43, 47, 49, and

51.

availability

 RoHS compliant design

7

What’s on the module?

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What’s on the module?

Digi Connect Wi­Wave 802.11 b/g
module edge
connector

8 Digi Connect Wi-Wave 802.11 b/g Hardware Reference, Rev. B, 2/2010

The Digi Connect Wi-W ave 802.11 b/g module edge connector is a 52-pin connector
whose pinout follows the standard PCI Express Mini Card edge connector pinout as
stated in the PCI Express Mini Card Electromechanical Specification, Revision 1.1,
with this exception: Dynamic C signals are mapped onto pins 37, 39, 41, 43, 47, 49,
and 51.

What’s on the module?

. . . . .

Digi Connect Wi­Wave 802.11 b/g
module edge
connector: Pinout

The module edge connector is configured as shown (signal direction w.r.t Wi-Wave):

Pin Type WLAN Mini Card

signal

1 n/a No connect 2 In Vcc_3.3
3 n/a No connect 4 In GND
5 n/a No connect 6 n/a No connect
7 n/a No connect 8 n/a No connect
9 In GND 10 n/a No connect
11 n/a No connect 12 n/a No connect
13 n/a No connect 14 n/a No connect
15 In GND 16 n/a No connect

Key Key
17 n/a No connect 18 In GND
19 n/a No connect 20 In W_DISABLE#
21 In GND 22 In RESET (PERST#)
23 n/a No connect 24 n/a No connect
25 n/a No connect 26 In GND

Pin Type WLAN Mini Card

signal

27 In GND 28 n/a No connect
29 In GND 30 n/a No connect
31 n/a No connect 32 n/a No connect
33 n/a No connect 34 In GND
35 In GND 36 I/O USB_D­37 In SMODE 0 38 I/O USB_D+
39 In SMODE 1 40 In GND
41 In RESET_IN# 42 n/a No Connect
43 In Status 44 Out LED_WLAN#
45 n/a No connect 46 n/a No Connect
47 In CLKA 48 n/a No connect
49 In RXA 50 In GND
51 Out TXA 52 In Vcc_3.3

U.FL connectors The module uses two U.FL antenna connectors (X4 and X5) to allow for cabling to

embedded antennas or external antenna connectors. For more information, see
Chapter 3, “Using the Antenna.”

www.digiembedded.com 9

USB peripheral controller

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USB peripheral controller

The module uses a peripheral USB controller to interface to either a full speed or
high speed USB 2.0 link. The link first tries to communicate to the host system
board at the high speed USB rate (480 Mbps). If not successful, the link reverts to
the full speed USB rate (12 Mbps). This link is used for all communication between
the module and the host system board.

Note:

The Digi Connect Wi-W ave 802.11 b/g module does not support low-speed USB
connections.

802.11b/g modes and channels

The Digi Connect Wi-Wave 802.11 b/g transmits and receives data at up to 11 Mbps
when operating in 802.11b mode and up to 54 Mbps when operating in 802.11g
mode. It supports these 802.11b/g channels:

 Channels 1 through 11 for North America (2.401 GHz–2.473 GHz)
 Channels 1 through 13 for Europe (2.401 GHz–2.483 GHz)

Channel
allocations

Channel Center frequency

(MHz)

1 2412 2401 - 2423
2 2417 2406 - 2428
3 2422 2411 - 2433

Frequency spread
(MHz - MHz)

4 2427 2416 - 2438
5 2432 2421 - 2443
6 2437 2426 - 2448
7 2442 2431 - 2453
8 2447 2436 - 2458
9 2452 2441 - 2463
10 2457 2446 - 2468
11 2462 2451 - 2473
12 2467 2456 - 2478
13 2472 2461 - 2483
14 2484 2473 - 2495

10 Digi Connect Wi-Wave 802.11 b/g Hardware Reference, Rev. B, 2/2010

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Voltage regulators

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The module takes in 3.3V±9% (3.00V to 3.60V) as its main input power. This power is
filtered and used as a 3.3V supply to portions of the digital logic. This power also
acts as input to dedicated on-board voltage regulators.

Voltage monitor — Reset generator

The module provides a voltage monitor or automatic reset signal generator; but the
module can also set into reset with the RESET pin on the edge connector.

LEDS

The module does not have any on-board LEDs, but it drives the LED_WLAN# signal
(pin 44) to indicate WLAN association and transmit/receive activity. This table
shows the different LED states:

Voltage regulators

. . . . .

LED state Indication

Off Not powered on
On Associated and authenticated
Slow blink Not associated or authenticated
Intermittent blink Transmit/receive activity

Power

The module requires only +3.3 VDC, 750 mA max. This power must be a well­regulated +3.3V supply due to limited supply filtering in the module. The digital
inputs and outputs are 3.3V CMOS compatible. See “Power requirements” on
page 31 for specifications.

DISABLE signal The module supports the active low

Express Mini Card Electromechanical Specification. This signal not only disables the
power supplies to the radio portion of the module, it also powers down additional
portions of the module to reduce power consumption to a minimum.

W_DISABLE# signal (pin 20) as specified in the PCI

www.digiembedded.com 11

Power
Requirements

Power

Module state Current Composition 3/3V Input

Suspended xx mA
Wireless Receive 240 mA
Wireless Transmit 420 mA

12 Digi Connect Wi-Wave 802.11 b/g Hardware Reference, Rev. B, 2/2010