[04.

2016

]

Mod. 80490NT11511A 2016-11 Rev.1

LE920A4/LE910Cx – Wi-Fi Interface 80490NT11511A Rev. 1 – 21/11/2016

80490NT11511A Rev. 1 Page 2 of 17 2016-11

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

NOTICE

While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. The information in this document has been carefully checked and is believed to be reliable. However, no responsibility is assumed for inaccuracies or omissions. Telit reserves the right to make changes to any products described herein and reserves the right to revise this document and to make changes from time to time in content hereof with no obligation to notify any person of revisions or changes. Telit does not assume any liability arising out of the application or use of any product, software, or circuit described herein; neither does it convey license under its patent rights or the rights of others.

It is possible that this publication may contain references to, or information about Telit products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that Telit intends to announce such Telit products, programming, or services in your country.

COPYRIGHTS

This instruction manual and the Telit products described in this instruction manual may be, include or describe copyrighted Telit material, such as computer programs stored in semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit and its licensors certain exclusive rights for copyrighted material, including the exclusive right to copy, reproduce in any form, distribute and make derivative works of the copyrighted material. Accordingly, any copyrighted material of Telit and its licensors contained herein or in the Telit products described in this instruction manual may not be copied, reproduced, distributed, merged or modified in any manner without the express written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit, as arises by operation of law in the sale of a product.

COMPUTER SOFTWARE COPYRIGHTS

The Telit and 3rd Party supplied Software (SW) products described in this instruction manual may include copyrighted Telit and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW computer programs contained in the Telit products described in this instruction manual may not be copied (reverse engineered) or reproduced in any manner without the express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that arises by operation of law in the sale of a product.

80490NT11511A Rev. 1 Page 3 of 17 2016-11

USAGE AND DISCLOSURE RESTRICTIONS

I. License Agreements

The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.

II. Copyrighted Materials

Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law. No part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Telit

III. High Risk Materials

Components, units, or third-party products used in the product described herein are NOT fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment in the following hazardous environments requiring fail-safe controls: the operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.

IV. Trademarks

TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service names are the property of their respective owners.

V. Third Party Rights

The software may include Third Party Right software. In this case you agree to comply with all terms and conditions imposed on you in respect of such separate software. In addition to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this License shall apply to the Third Party Right software.

TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE, INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.

NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY, ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

80490NT11511A Rev. 1 Page 4 of 17 2016-11

APPLICABILITY TABLE

PRODUCTS

LE910CX SERIES

LE920A4 SERIES

80490NT11511A Rev. 1 Page 5 of 17 2016-11

CONTENTS

NOTICE 2

COPYRIGHTS ................................................................................................ 2

COMPUTER SOFTWARE COPYRIGHTS ...................................................... 2

USAGE AND DISCLOSURE RESTRICTIONS ............................................... 3

APPLICABILITY TABLE ................................................................................ 4

CONTENTS .................................................................................................... 5

1. INTRODUCTION .......................................................................... 6

2. WI-FI INTERFACE ....................................................................... 9

Introduction ................................................................................... 9

Functional Overview ..................................................................... 9

2.2.1. Wi-Fi interface .............................................................................. 9

Basic Block Diagram ................................................................... 10

EVB Connection ......................................................................... 11

2.4.1. Detailed EVB Connection Diagram ............................................. 12

2.4.2. Detailed EVB Connection Signal description ............................... 13

3. WI-FI DEMO GETTING STARTED GUIDE ................................. 14

Software/Set-up Requirements ................................................... 14

Commands example ................................................................... 14

WLAN - User guide ..................................................................... 14

4. GLOSSARY AND ACRONYMS ................................................. 15

5. DOCUMENT HISTORY .............................................................. 16

80490NT11511A Rev. 1 Page 6 of 17 2016-11

1. INTRODUCTION 1.1. Scope Scope of this document is to provide an overview of the technical aspects to consider while implementing Wi-Fi functionalities onto applications integrating Telit modules specified in the aforementioned Applicability Table.

1.2. Audience This document is intended for Telit customers who are about to implement Wi-Fi functionalities into their projects.

1.3. Contact Information, Support For general contact, technical support services, technical questions and report documentation errors contact Telit Technical Support at:

• TS-EMEA@telit.com • TS-AMERICAS@telit.com • TS-APAC@telit.com

Alternatively, use:

http://www.telit.com/support

For detailed information about where you can buy the Telit modules or for recommendations

on accessories and components visit:

http://www.telit.com

Our aim is to make this guide as helpful as possible. Keep us informed of your comments

and suggestions for improvements.

Telit appreciates feedback from the users of our information.

80490NT11511A Rev. 1 Page 7 of 17 2016-11

1.4. Text Conventions

Danger – This information MUST be followed or catastrophic equipment

failure or bodily injury may occur.

Caution or Warning – Alerts the user to important points about integrating the

module, if these points are not followed, the module and end user equipment

may fail or malfunction.

Tip or Information – Provides advice and suggestions that may be useful

when integrating the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

80490NT11511A Rev. 1 Page 8 of 17 2016-11

1.5. Related Documents • LE920A4 HW user guide, 1VV0301261 • LE910Cx HW user guide, 1VV0301298 • xE920A4 Interface Board User Guide, 1VV0301248 • AT Commands Reference Guide, 80407ST10116A • Telit EVB User Guide, 1VV0301249 • Qualcomm QCA6574A-3 data sheet – see note • Qualcomm QCA6574A-3 Ref. schematics – see note

Any Technical information regarding QCA6574A-3 such as data sheets,

reference schematics and other Qualcomm documents are Qualcomm

proprietary.

Therefore, Telit may provide such Qualcomm documents, only after getting

Qualcomm formal approval, or having a signed NDA between Qualcomm and

Telit customer..

80490NT11511A Rev. 1 Page 9 of 17 2016-11

2. WI-FI INTERFACE Introduction

The Wi-Fi Interface is one part of the Baseband System.

Its main application described in this document is to connect the WIFI interface to Qualcomm Atheros QCA6574A-3 / QC6564A-3 chipset.

Any Technical information regarding QCA6574A-3 such as data sheets,

reference schematics and other Qualcomm documents are Qualcomm

proprietary.

Therefore, Telit may provide such Qualcomm documents, only after getting

Qualcomm formal approval, or having a signed NDA between Qualcomm and

Telit customer..

Functional Overview The Wi-Fi Interface is a dedicated SD interface that designed as a communication channel to the Qualcomm Atheros chipset.

2.2.1. Wi-Fi interface

PIN SIGNAL I/O FUNCTION TYPE COMMENT

LE920A4

Y3 WIFI_SDRST_TGPIO13 O WLAN RESET

CMOS 1.8V

AB3 WIFI_SDCMD_TGPIO14 I/O SDIO CMD CMOS 1.8V

AD3 WIFI_SD0_TGPIO15 I/O SDIO DATA 0

CMOS 1.8V

AF3 WIFI_SD1_TGPIO16 I/O SDIO DATA 1

CMOS 1.8V

AH3 WIFI_SD2_TGPIO17 I/O SDIO DATA 2

CMOS 1.8V

AK3 WIFI_SD3_TGPIO18 I/O SDIO DATA 3

CMOS 1.8V

80490NT11511A Rev. 1 Page 10 of 17 2016-11

AM3 WIFI_SDCLK_TGPIO19 O SDIO CLOCK

CMOS 1.8V

LE910CX

L12 WIFI_SDRST_TGPIO13 O WLAN RESET

CMOS 1.8V

N13 WIFI_SDCMD_TGPIO14 I/O SDIO CMD CMOS 1.8V

J13 WIFI_SD0_TGPIO15 I/O SDIO DATA 0

CMOS 1.8V

M13 WIFI_SD1_TGPIO16 I/O SDIO DATA 1

CMOS 1.8V

K13 WIFI_SD2_TGPIO17 I/O SDIO DATA 2

CMOS 1.8V

H13 WIFI_SD3_TGPIO18 I/O SDIO DATA 3

CMOS 1.8V

L13 WIFI_SDCLK_TGPIO19 O SDIO CLOCK

CMOS 1.8V

Basic Block Diagram The following diagram shows basic connection of LE920A4/LE910Cx Wi-Fi interface with Qualcomm QCA6574A-3 reference design.

LE920A4/ LE910Cx

QCA6574A-3 Ref. design Wi-Fi SDIO

Interface

VBATT (3.6V – 4.2V)

1.8V Reg. Reg. 3.3V

Figure 1 Basic Block Diagram

80490NT11511A Rev. 1 Page 11 of 17 2016-11

EVB Connection The Wi-Fi interface connection which is forming the system of LE920A4/LE910Cx and the QCA6574A-3 reference design module is made using the EVB Connectivity Extension

card. The figure below show the EVB and the WIFI extension card connected together

USI

M 2U

SIM

1 +

2

JTAG

USB

UA

RT’

sUSB

MD

MM

icro

SD

EXT CON

SWSWSW

RJ1

1

SMASMASMA PowerInput

Pow

er3.

8V

Audio Jack TelitModule

EXT CON

RemoteControl

SW SW SW

QCA6574A-3 Reference Module

ANT1

ANT2

Figure 2 EVB Connection

80490NT11511A Rev. 1 Page 12 of 17 2016-11

The figure below shows the real view of the WIFI extension card

Figure 3 EVB Connectivity Extension Board

2.4.1. Detailed EVB Connection Diagram The figure below shows the detailed signals connection between Telit LE920A4/LE920Cx and QCA6574A-3 Wi-Fi device.

V. Reg1.8V

V. Reg3.3V

VBATT(3.6V-4.2V)

10K

WL_1.8V WL_3.3V

WL_1.8V

VBATT/VBATT_PA

Telit Module QCA6574A-3WIFI_SDCLK_TGPIO19

WIFI_SDCMD_TGPIO14WIFI_SD0_TGPIO15WIFI_SD1_TGPIO16WIFI_SD2_TGPIO17WIFI_SD3_TGPIO18

WIFI_SDRST_TGPIO13

WCI_RXWCI_TX

WLAN_SLEEP_CLK

SDIO_CLKSDIO_CMDSDIO_DATA0SDIO_DATA1SDIO_DATA2SDIO_DATA3

WLA_PWD_L

LTE_PRI/LTE_TXDLTE_SYNC/LTE_RXDSLEEP_CLOCK_32K

SDIO_WAKEUP_HOST_LSDIO_DATA[4..7]

WLAN_RF_KILL_L

GPS_COEX

LTE_ACTIVE

nc

nc

nc

nc

nc

Figure 4 Detailed Connectivity Diagram

• Only 4 bit SDIO bus is supported by the Modem. • SDIO_WAKEUP_HOST_L (also called SDIO_INT on some WIFI module designs)

is only needed when SDIO 1bit or SDIO SPI interface is used. • LTE_ACTIVE signal is not required since our system is using the 2-wire WCI

interface for LTE coexistence. • GPS_COEX signal is not used and should be left unconnected on the WIFI side. • WLAN_RF_KILL_L turn off WLAN RF analog and front-end. It is not used on our

design since we use the WLA_PWD_L for placing the WIFI into sleep mode.

80490NT11511A Rev. 1 Page 13 of 17 2016-11

2.4.2. Detailed EVB Connection Signal description

TELIT

SIGNAL NAME

WI-FI

QCA6574A-3

SIGNAL NAME

I/O FUNCTION TYPE COMMENT

SDIO BUS

WIFI_SDCLK_TGPIO19 SDIO_CLK O SDIO CLOCK CMOS 1.8V

WIFI_SDCMD_TGPIO14 SDIO_CMD I/O SDIO CMD CMOS 1.8V

WIFI_SD0_TGPIO15 SDIO_DATA0 I/O SDIO DATA 0 CMOS 1.8V

WIFI_SD1_TGPIO16 SDIO_DATA1 I/O SDIO DATA 1 CMOS 1.8V

WIFI_SD2_TGPIO17 SDIO_DATA2 I/O SDIO DATA 2 CMOS 1.8V

WIFI_SD3_TGPIO18 SDIO_DATA3 I/O SDIO DATA 3 CMOS 1.8V

CONTROLS

WIFI_SDRST_TGPIO13 WLA_PWD_L O WLAN Power Down

CMOS 1.8V

WLAN ENABLE. ACTIVE HIGH.

WLAN_SLEEP_CLK SLEEP_CLOCK_32K O SLEEP CLOCK FOR WIFI (32.768KHZ)

CMOS 1.8V

EXTERNAL LOW-POWER 32.768 KHZ CLOCK INPUT

MODEM COEXISTANCE

WCI_RX LTE_PRI/LTE_TXD I SERIAL DATA INPUT

CMOS 1.8V

LTE CO- EXISTENCE SIGNAL. LTE UART TXD

WCI_TX LTE_SYNC/LTE_RXD O SERIAL DATA

OUTPUT CMOS 1.8V

LTE COEXISTENCE SIGNAL. LTE_UART_RXD OR LTE_FS.

80490NT11511A Rev. 1 Page 14 of 17 2016-11

3. WI-FI DEMO GETTING STARTED GUIDE Software/Set-up Requirements

The following Drivers must be installed: - Android SDK platform on a Windows machine:

a) Go to: http://developer.android.com/sdk/win-usb.html Follow the instructions for installing the SDK (Select SDK only, no need for ADT bundles). b) Right-click My Computer, select Properties→Advanced→Environment Variables, and set the path to include the c:\android-sdk-windows\tools directory. The path must point to directory with fastboot.exe file in it. For example -> C:\Program Files\Android\android-sdk\platform-tools c) Navigate to the %USERPROFILE%\.android directory (simply copy this line into the file browser: %USERPROFILE%\.android). d) In the %USERPROFILE%\.android directory, create/edit the adb_usb.ini file. If the file already exists, it will contain a DO NOT EDIT message. Disregard this message and edit the file anyway. To edit, add a line containing 0x1bc7 to the end of the file. The file contents should look like this: # ANDROID 3RD PARTY USB VENDOR ID LIST -- DO NOT EDIT. # USE 'android update adb' TO GENERATE. # 1 USB VENDOR ID PER LINE: 0x1bc7

- USB drivers on a Windows machine can be downloaded from: http://www.telit.com/evkevb-drivers/

Commands example 1) Open Command prompt (cmd.exe), and execute ‘adb shell’ command. 2) Line marking will change to / # , You can proceed to step 2.

The following steps are run from within this shell, as is.

1) Type QCMAP_CLI, select the following options: a. type 30 (Enable/Disable Mobile AP) – 1: Enable b. type 31 (Enable/Disable WLAN) – 1: Enable c. type 32 (Connect/Disconnect Backhaul)

I. Backhaul State(1-Connect/0-Disconnect): 1 II. Call Type (1-IPV4; 2-IPV6): 1

WLAN - User guide Please see Telit AT Commands reference manual (document number 80407ST10116A) for details on WLAN available commands.

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4. GLOSSARY AND ACRONYMS

Description

TTSC Telit Technical Support Centre

USB Universal Serial Bus

HS High Speed

DTE Data Terminal Equipment

UMTS Universal Mobile Telecommunication System

WCDMA Wideband Code Division Multiple Access

HSDPA High Speed Downlink Packet Access

HSUPA High Speed Uplink Packet Access

UART Universal Asynchronous Receiver Transmitter

HSIC High Speed Inter Chip

SIM Subscriber Identification Module

SPI Serial Peripheral Interface

ADC Analog – Digital Converter

DAC Digital – Analog Converter

I/O Input Output

GPIO General Purpose Input Output

CMOS Complementary Metal – Oxide Semiconductor

MOSI Master Output – Slave Input

MISO Master Input – Slave Output

CLK Clock

CS Chip Select

RTC Real Time Clock

PCB Printed Circuit Board

ESR Equivalent Series Resistance

80490NT11511A Rev. 1 Page 16 of 17 2016-11

5. DOCUMENT HISTORY

Revision Date Changes

0 2016-11-14 First issue

1 2016-11-21 LE920A4 and LE910Cx adaptation of document

[04.

2016

]

Mod. 80490NT11511A 2016-11 Rev.1