Gainspan GS2101M Users Manual

GS2101M Low Power WiFi Module

Data Sheet

GS2101M-DS-001270

GainSpan

802.11b/g/n Low Power WiFi

Series Modules

FCC Communications Commission (FCC) Interference Statement

FCC & IC Radiation Exposure Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate frequency energy and, if not installed and used in accordance with the instructions may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician for help

FCC Caution: To assure continued compliance, (example - use only shielded interface cables when connecting to computer or peripheral devices). Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

This equipment complies with FCC & IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device intended only for OEM integrators under the following conditions:

1. The antenna must be installed such that 20cm is maintained between the antenna and

users, and

2. The transmitter module may not be co-located with any other transmitter or antenna. As

long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.).

IMPORTANT NOTE: In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC & IC authorizations are no longer considered valid and the FCC & IC IDs cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining separate FCC & IC authorizations.

End Product Labeling: This transmitter module is authorized only for use in device where the antenna may be installed such that 20cm may be maintained between the antenna and users (for example access points, routers, wireless ADSL modems, and similar equipment). the final product must be labeled in a visible area with the corresponding FCC ID number.

IC Certification - Canada The labeling requirements for Industry Canada are similar to those of the FCC. A visible label

on the outside of the final product must display the IC labeling. The user is responsible for the end product to comply with IC ICES-003 (Unintentional radiators).

English This device complies with Industry Canada license-exempt RSS standard(s). Operation is

subject to the following two conditions:

1. This device may not cause harmful interference

2. This device must accept any interference received, including received, including

interference that may cause undesired operation of the device.

French Cet appareil est conforme à Industrie Canada une licence standard RSS exonérés (s). Son

fonctionnement est soumis aux deux conditions suivantes:

1. Cet appareil ne doit pas provoquer d'interférences

2. Cet appareil doit accepter toute interférence reçue, y compris les interférences pouvant

provoquer un fonctionnement indésirable de l'appareil.

Manual Information That Must be Included

The user’s manual for end users must include the following information in a prominent location.

IMPORTANT NOTE: To comply with FCC & IC RF exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation distance of at least 20cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

Additional Notations: GainSpan modules have been built or under development for near body exposure applications. The 20cm statement is a standard note because absorption rate testing (commonly knowns as SAR or Specific absorption rate) is not modularly transferable for FCC/IC. Thus, if a radio is being used against the body, the end user is still responsible to test for regulatory near body exposure testing (for USA, please refer to the following):

• FCC Part 1.1037

• FCC Part 2.1091 Mobile Devices

• FCC Part 2.1093 Portable Devices

• FCC Part 15.247 (b) (4)

international copyright laws, conventions, and treaties. Your right to use this manual is subject to limitations and restrictions imposed by applicable licenses and copyright laws. Unauthorized reproduction, modification, distribution, display or other use of this manual may result in criminal and civil penalties.

GainSpan assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of GainSpan products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. GainSpan products are not authorized for use as critical components in medical, lifesaving, or life-sustaining applications

GainSpan may make changes to specifications and product descriptions at any time, without notice.

names and brands may be claimed as the property of others.

Contact Information In an effort to improve the quality of this document, please notify GainSpan Technical

Assistance at 1.408.627.6500 in North America or +91 80 42526503 outside North America.

Web and Email Contact

www.gainspan.com

Chapter 1 GS2101M Overview ........................................................................................................ 19

1.1 Product Overview ..................................................................................................................19

1.2 GS2101M Module Product Features ..................................................................................... 19

Chapter 2 GS2101M Architecture .................................................................................................... 23

2.1 Architecture Description ........................................................................................................23

2.1.1 Wireless LAN and System Control Subsystem ............................................................25

2.1.2 On-board Antenna / RF Port / Radio ............................................................................25

2.1.2.1 802.11 MAC ......................................................................................................... 25

2.1.2.2 802.11 PHY .........................................................................................................26

2.1.2.3 RF/Analog ............................................................................................................ 26

2.1.3 Network Services Subsystem ......................................................................................27

2.1.3.1 APP CPU .............................................................................................................27

2.1.3.2 Crypto Engine ......................................................................................................27

2.1.4 Memory Subsystem .....................................................................................................27

2.1.4.1 SRAM ..................................................................................................................27

2.1.4.2 ROM ....................................................................................................................28

2.1.4.3 OTP ROM ............................................................................................................28

2.1.4.4 Flash Interface .....................................................................................................28

2.1.5 Clocks ..........................................................................................................................28

2.1.6 Real Time Clock (RTC) Overview ................................................................................29

2.1.6.1 RTC Main Features .............................................................................................29

2.1.6.2 Real Time Clock Counter .....................................................................................30

2.1.6.3 RTC I/O ................................................................................................................30

2.1.7 GS2101M Peripherals ..................................................................................................30

2.1.7.1 SDIO Interface .....................................................................................................30

2.1.7.2 SPI Interface ........................................................................................................31

2.1.7.3 UART Interface ....................................................................................................31

2.1.7.4 I2C Interface ........................................................................................................ 31

2.1.7.5 GPIO .................................................................................................................... 32

2.1.7.6 Sigma Delta ADC .................................................................................................32

2.1.7.7 PWM ....................................................................................................................32

2.1.8 System States ..............................................................................................................33

2.1.9 Power Supply ...............................................................................................................34

Chapter 3 Pin-out and Signal Description ........................................................................................ 35

3.1 GS2101Mxx Device Pin-out ..................................................................................................35

3.1.1 GS2101Mxx Module Pins Description ..........................................................................36

Table 7 Errata ..................................................................................................................38

3.1.2 GS2101M Pin MUX Function .......................................................................................39

3.1.3 GS2101M Program and Code Restore Options ...........................................................41

Chapter 4 Electrical Characteristics ................................................................................................. 43

4.1 Absolute Maximum Ratings ...................................................................................................43

4.2 Operating Conditions .............................................................................................................44

4.3 I/O DC Specifications ............................................................................................................45

4.3.1 I/O Digital Specifications (Tri-State) Pin Types 4mA, 12mA, and 16mA ......................45

4.3.1.1 I/O Digital Specifications for VDDIO=2.7V to 3.6V ..............................................45

4.3.2 RTC I/O Specifications .................................................................................................46

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GS2101M Low Power WiFi Module Data Sheet

4.4 Power Consumption ..............................................................................................................47

4.5 802.11 Radio Parameters ......................................................................................................48

4.6 Sigma Delta ADC Parameters ...............................................................................................49

Chapter 5 Package and Layout Guidelines ..................................................................................... 51

5.1 GS2101Mxx Recommended PCB Footprint and Dimensions ............................................... 51

5.1.1 Surface Mount Assembly .............................................................................................54

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About This Manual

This manual describes the GS2101M Low Power module hardware specification.

Refer to the following sections:

• Revision History, page 8

• Audience, page 8

• Standards, page 8

• Documentation Conventions, page 9

• Documentation, page 12

• Contacting GainSpan Technical Support, page 14

• Returning Products to GainSpan, page 15

• Accessing the GainSpan Portal, page 16

• Ordering Information, page 17

GS2101M-DS-001270, Release 1.0 Confidential 7

Revision History

This version of the GainSpan GS2101M Low Power WiFi Data Sheet contains the

following new information listed in Table 1, page 8.

Table 1 Revision History

Version Date Remarks

1.0 May 2016 Initial release.

Audience

This manual is designed to help system designers build low power, cost effective, flexible

platforms to add WiFi connectivity for embedded device applications using the GainSpan GS2101M based module.

Standards

GS2101M Low Power WiFi Module Data Sheet

The standards that are supported by the GainSpan modules are IEEE 802.11b/g/n.

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Documentation Conventions

This manual uses the following text and syntax conventions:

– Special text fonts represent particular commands, keywords, variables, or window

sessions

– Color text indicates cross-reference hyper links to supplemental information

– Command notation indicates commands, subcommands, or command elements

Table 2, page 9, describes the text conventions used in this manual for software procedures

that are explained using the AT command line interface.

Table 2 Document Text Conventions

Convention Type Description

command syntax

monospaced font

Proportional font

description

UPPERCASE

Variable parameter

lowercase

Keyword parameter

[ ]

Square brackets

Question mark

<ESC>

Escape sequence

This monospaced font represents command strings entered on a command line and sample source code.

AT XXXX

Gives specific details about a parameter.

<Data> DATA

Indicates user input. Enter a value according to the descriptions that follow. Each uppercased token expands into one or more other token.

Indicates keywords. Enter values exactly as shown in the command description.

Enclose optional parameters. Choose none; or select one or more an unlimited number of times each. Do not enter brackets as part of any command.

[parm1|parm2|parm3]

Used with the square brackets to limit the immediately following token to one occurrence.

Each escape sequence <ESC> starts with the ASCII character 27 (0x1B). This is equivalent to the Escape key.

<ESC>C

<CR>

Each command is terminated by a carriage return.

Carriage return

<LF>

Each command is terminated by a line feed.

Line feed

Carriage return

Each response is started with a carriage return and line feed with some exceptions.

Line feed

GS2101M-DS-001270, Release 1.0 Confidential 9

Table 2 Document Text Conventions (Continued)

Convention Type Description

Enclose a numeric range, endpoints inclusive. Do not enter angle

< >

brackets as part of any command.

Angle brackets

<SSID>

Separates the variable from explanatory text. Is entered as part of the

command.

Equal sign

PROCESSID = <CID>

Allows the repetition of the element that immediately follows it multiple

times. Do not enter as part of the command.

dot (period)

.AA:NN can be expanded to 1:01 1:02 1:03.

GS2101M Low Power WiFi Module Data Sheet

A.B.C.D

IP address

X:X::X:X

IPv6 IP address

LINE

End-to-line input token

WORD

Single token

IPv4-style address.

10.0.11.123

IPv6-style address.

3ffe:506::1

Where the : : represents all 0x for those address components not explicitly given.

Indicates user input of any string, including spaces. No other parameters may be entered after input for this token.

string of words

Indicates user input of any contiguous string (excluding spaces).

singlewordnospaces

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Table 3, page 11, describes the symbol conventions used in this manual for notification and

important instructions.

Icon Type Description

Note

Table 3 Symbol Conventions

Provides helpful suggestions needed in understanding a feature or references to material not available in the manual.

Alert

Caution

Warning

Electro-Static Discharge (ESD)

Alerts you of potential damage to a program, device, or system or the loss of data or service.

Cautions you about a situation that could result in minor or moderate bodily injury if not avoided.

Warns you of a potential situation that could result in death or serious bodily injury if not avoided.

Notifies you to take proper grounding precautions before handling a product.

GS2101M-DS-001270, Release 1.0 Confidential 11

Documentation

The GainSpan documentation suite listed in Table 4, page 12 includes the part number,

documentation name, and a description of the document. The documents are available from the GainSpan Portal. Refer to Accessing the GainSpan Portal, page 16 for details.

Part Number Document Title Description

GS2K-QS-001205

GS2K-EVB-FP-UG-001206

GS2011-S2W-APP-PRG-RG-001208

GS2100-S2W-APP-PRG-RG-001208

GS2K-EVB-HW-UG-001210

GS2011M-DS-001211

GS2101M Low Power WiFi Module Data Sheet

Table 4 Documentation List

GainSpan GS2000 Based Module Kit Quick Start Guide

GainSpan GS2000 Based Module Programming User Guide

GainSpan Serial-to-WiFi Adapter Application Programmer Reference Guide

GainSpan GS2000 Based Module Evaluation Board Hardware User Guide.

GainSpan GS2011M Low Power WiFi Module Data Sheet

Provides an easy to follow guide on how to unpack and setup GainSpan GS2000 based module kit for the GS2011M and GS2100M modules.

Provides users steps to program the on-board Flash on the GainSpan GS2000 based modules using DOS or Graphical User Interface utility provided by GainSpan. The user guide uses the evaluation boards as a reference example board.

Provides a complete listing of AT serial commands, including configuration examples for initiating, maintaining, and evaluating GainSpan WiFi GS2011M series modules.

Provides a complete listing of AT serial commands, including configuration examples for initiating, maintaining, and evaluating GainSpan WiFi GS2100M series modules.

Provides instructions on how to setup and use the GS2000 based module evaluation board along with component description, jumper settings, board specifications, and pinouts.

Provides information to help WiFi system designers to build systems using GainSpan GS2011M module and develop wireless applications.

Provides information to help WiFi

GS2100M-DS-001212

GainSpan GS2100M Low Power WiFi Module Data Sheet

system designers to build systems using GainSpan GS2100M module and develop wireless applications.

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Table 4 Documentation List (Continued)

Part Number Document Title Description

GS2011MxxS-DS-001214

GS2101M-DS-001270

GS2K-IP2WIFI-APP-PRG-RG-001247

GainSpan GS2011MxxS Low Power WiFi Module Data Sheet

GainSpan GS2101M Low Power WiFi Module Data Sheet

GainSpan GS2000 Based Module IP-to-WiFi Adapter Application Programmer Reference Guide

Provides information to help WiFi system designers to build systems using GainSpan GS2011MxxS module and develop wireless applications.

Provides information to help WiFi system designers to build systems using GainSpan GS2101M module and develop wireless applications.

Provides a complete listing of AT serial commands, including configuration examples for initiating, maintaining, and evaluation GainSpan IP-to-WiFi GS2000 based modules.

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Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can improve

the documentation. You can send your comments by logging into If you are using e-mail, be sure to include the following information with your comments:

– Document name

– URL or page number

– Hardware release version (if applicable)

– Software release version (if applicable)

Contacting GainSpan Technical Support

Use the information listed in Table 5, page 14, to contact the GainSpan Technical Support.

Table 5 GainSpan Technical Support Contact Information

GS2101M Low Power WiFi Module Data Sheet

GainSpan Support Portal.

North America 1 (408) 627-6500 -

techsupport@gainspan.com

Europe: EUsupport@gainspan.com

Outside North America

China: Chinasupport@gainspan.com

Asia: Asiasupport@gainspan.com

GainSpan Corporation

Postal Address

3590 North First Street Suite 300 San Jose, CA 95134 U.S.A.

For more Technical Support information or assistance, perform the following steps:

1. Point your browser to http://www.gainspan.com.

2. Click Contact, and click Request Support.

3. Log in using your customer Email and Password.

4. Select the Location.

5. Select Support Question tab.

6. Select Add New Question.

7. Enter your technical support question, product information, and a brief description.

The following information is displayed:

• Telephone number contact information by region

• Links to customer profile, dashboard, and account information

• Links to product technical documentation

• Links to PDFs of support policies

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Returning Products to GainSpan

If a problem cannot be resolved by GainSpan technical support, a Return Material

Authorization (RMA) is issued. This number is used to track the returned material at the

factory and to return repaired or new components to the customer as needed.

NOTE: Do not return any components to GainSpan Corporation unless you have first obtained an RMA number. GainSpan reserves the right to refuse shipments that do not have an RMA. Refused shipments will be returned to the customer by collect freight.

For more information about return and repair policies, see the customer support web page

https://www.gainspan.com/secure/login.

at:

To return a hardware component:

1. Determine the part number and serial number of the component.

2. Obtain an RMA number from Sales/Distributor Representative.

3. Provide the following information in an e-mail or during the telephone call:

– Part number and serial number of component

– Your name, organization name, telephone number, and fax number

– Description of the failure

4. The support representative validates your request and issues an RMA number for return of the components.

5. Pack the component for shipment.

Guidelines for Packing Components for Shipment

To pack and ship individual components:

– When you return components, make sure they are adequately protected with

packing materials and packed so that the pieces are prevented from moving around inside the carton.

– Use the original shipping materials if they are available.

– Place individual components in electrostatic bags.

– Write the RMA number on the exterior of the box to ensure proper tracking.

CAUTION! Do not stack any of the components.

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Accessing the GainSpan Portal

To find the latest version of GainSpan documentation supporting the GainSpan product

release you are interested in, you can search the GainSpan Portal website by performing the following steps:

NOTE: You must first contact GainSpan to set up an account, and obtain a customer user name and password before you can access the GainSpan Portal.

1. Go to the GainSpan Support Portal website.

2. Log in using your customer Email and Password.

3. Click the Getting Started tab to view a Quick Start tutorial on how to use various features within the GainSpan Portal.

4. Click the Actions tab to buy, evaluate, or download GainSpan products.

5. Click on the Documents tab to search, download, and print GainSpan product documentation.

GS2101M Low Power WiFi Module Data Sheet

6. Click the Software tab to search and download the latest software versions.

7. Click the Account History tab to view customer account history.

8. Click the Legal Documents tab to view GainSpan Non-Disclosure Agreement (NDA).

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Ordering Information

To order GainSpan’s GS2101Mxx low power module contact a GainSpan Sales/Distributor

Representative. Table 6, page 17 lists the GainSpan device information.

Table 6 GS2101Mxx Ordering Information

Device Description Ordering Number Revision

Low power module with on-board antenna GS2101MIP 1.0

Low power module with external antenna GS2101MIE 1.0

NOTE: Modules ship with test code ONLY. Designers must first program the modules with a released firmware version. Designers should bring out GPIO31 pin (option to pull this pin to VDDIO during reset or power-on) and UART0 or SPI0 pins to enable programming of firmware into the module. For details refer to the Programming the GainSpan Modules document.

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GS2101M Low Power WiFi Module Data Sheet

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Gainspan GS2101M Users Manual

Table of Contents

About This Manual

Revision History

Ordering Information