Quectel GNSS Module Series User manual

LG69T (AA)
EVB User Guide
GNSS Module Series
Rev. LG69T(AA)_EVB_User_Guide_V1.0
Date: 2020-04-23
Status: Preliminary
www.quectel.com

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Our aim is to provide customers with timely and comprehensive service. For any
assistance, please contact our company headquarters:
Quectel Wireless Solutions Co., Ltd.
Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai
200233, China
Tel: [phone]
Email: [email protected]om
Or our local office. For more information, please visit:
http://www.quectel.com/support/sales.htm
For technical support, or to report documentation errors, please visit:
http://www.quectel.com/support/technical.htm
Or email to: [e-mail]
GENERAL NOTES
QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION
PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT
TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT
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THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF QUECTEL
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Copyright © Quectel Wireless Solutions Co., Ltd. 2020. All rights reserved.

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About the Document
Revision History
Version
Date
Author
Description
1.0
2020-04-23
Gobber HU
Initial

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Contents
About the Document...................................................................................................................................2
Contents.......................................................................................................................................................3
Table Index...................................................................................................................................................4
Figure Index.................................................................................................................................................5
1Introduction..........................................................................................................................................6
1.1. Safety Information.......................................................................................................................6
2General Overview.................................................................................................................................7
2.1. EVB Top View..............................................................................................................................7
3Interface Applications .........................................................................................................................9
3.1. Micro-USB to UART Interface (J201)..........................................................................................9
3.2. GNSSAntenna Interface (J401).................................................................................................9
3.3. Buttons......................................................................................................................................10
3.4. Operation Status Indication LEDs............................................................................................. 11
3.5. Test Points.................................................................................................................................12
4EVB Operation Procedures...............................................................................................................15
4.1. Communication through Micro-USB to UART Interface...........................................................15
4.2. Firmware Upgrade....................................................................................................................16
5Appendix A Reference.......................................................................................................................17

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Table Index
Table 1: Interfaces of LG69T (AA) EVB....................................................................................................... 7
Table 2: Switches and Buttons....................................................................................................................11
Table 3: Operation Status Indication LEDs.................................................................................................11
Table 4: Pin Definition of J303 Test Points................................................................................................. 12
Table 5: Pin Definition of J302 Test Points................................................................................................. 13
Table 6: Related Documents......................................................................................................................17
Table 7: Terms and Abbreviations.............................................................................................................. 17

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Figure Index
Figure 1: Top View of LG69T (AA) EVB....................................................................................................... 7
Figure 2: Micro-USB to UART Interface....................................................................................................... 9
Figure 3: GNSSAntenna Interface ............................................................................................................10
Figure 4: Switches and Buttons .................................................................................................................10
Figure 5: Operation Status Indication LEDs................................................................................................11
Figure 6: Test Points (J303) .......................................................................................................................12
Figure 7: Test Points (J302) .......................................................................................................................13
Figure 8: USB Port.....................................................................................................................................15
Figure 9: COM Port Setting Interface of QCOM........................................................................................15
Figure 10: GNSSFlashTool Configurations for Firmware Upgrade ...........................................................16

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1Introduction
This document specifies the usage of LG69T (AA) EVB (Evaluation Board) which is an assistant tool for
engineers to develop and test Quectel LG69T (AA) module.
1.1. Safety Information
The following safety precautions must be observed during all phases of operation, such as usage, service
or repair of any terminal incorporating Quectel GNSS module. Manufacturers of the terminal should notify
users and operating personnel of the following safety information by incorporating these guidelines into all
manuals of the product. Otherwise, Quectel assumes no liability for customers’ failure to comply with
these precautions.
Ensure the use of the product conforms to the local safety and environment
regulations, and is allowed in the country and the environment required.
Keep away from explosive and flammable materials. The use of electronic
products in extreme power supply conditions and locations with potentially
explosive atmospheres may cause fire and explosion accidents.
The product must be powered by a stable voltage source, and the wiring shall
conform to security precautions and fire prevention regulations.
Proper ESD handling procedures must be followed throughout the mounting,
handling and operation of any application that incorporates the module to avoid
ESD damages.

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2General Overview
2.1. EVB Top View
The following figure illustrates the top view of the EVB.
A
B C D
FG E
J
K
H
I
Figure 1: Top View of LG69T (AA) EVB
Table 1: Interfaces of LG69T (AA) EVB
SN.
Part No.
Description
A
D301, D302
Indication LEDs
B
J201
Micro-USB to UART interface
C
S101
Power switch
D
J101
5 V power interface

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E
J301
LG69T (AA) USB interface
F
S301
LG69T (AA) wakeup button
G
S202
Boot button
H
S201
LG69T (AA) reset button
I
J303, J701, J302
Test points
J
J401
LG69T (AA) antenna interface
K
U301
LG69T (AA) module

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3Interface Applications
3.1. Micro-USB to UART Interface (J201)
Micro-USB to UART interface can supply power to the EVB, and also supports data transmission.
Micro-USB to
UART Interface
Figure 2: Micro-USB to UART Interface
3.2. GNSS Antenna Interface (J401)
The GNSS antenna interface is used to connect an external passive or active GNSS antenna.

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GNSS Antenna
Interface
Figure 3: GNSS Antenna Interface
3.3. Buttons
The following figure illustrates the switches and buttons of the EVB.
S202 S301S201 S101
Figure 4: Switches and Buttons

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Table 2: Switches and Buttons
3.4. Operation Status Indication LEDs
GEOFENCE
1PPS
TXD
RESERVED
Figure 5: Operation Status Indication LEDs
Table 3: Operation Status Indication LEDs
Part No.
Name
Description
S101
ON/OFF
Power on/off switch
S301
WAKE_UP
Wake up LG69T (AA) module
S202
BOOT_GNSS
Pressing the BOOT button when LG69T (AA) module is turned
on, the module will enter bootloader download mode.
S201
RESET_GNSS
LG69T (AA) module will be reset through pressing and then
releasing the button.
Name
I/O
Description
GEOFENCE
DO
Used to indicate entering or exiting from the geofence state

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3.5. Test Points
The following figure illustrates the test points of the EVB.
1 2 3 4 5 6
7891011 12
Figure 6: Test Points (J303)
Table 4: Pin Definition of J303 Test Points
RESERVED
/
1PPS
DO
Flash:
1PPS signal indicator.
The frequency is 1Hz (configurable).
TXD
DO
Flash: the module is turned on successfully, and UART is
outputting data.
Extinct: failed to turn on the module.
Pin No.
Signal
I/O
Description
1
RESET
DO
System reset
2
NC
Not connected
3
NC
Not connected
4
GND
IO
Ground
5
NC
Not connected
6
NC
Not connected

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1 2 3 4 5
678 9 10
Figure 7: Test Points (J302)
Table 5: Pin Definition of J302 Test Points
7
GEOFENCE
DO
Geofence status
8
NC
Not connected
9
WI
PO
10
GND
-
Ground
11
NC
Not connected
12
NC
Not connected
Pin No.
Signal
I/O
Description
1
SPI_MOSI
DI
SPI master out salve in
2
SPI_SCK
DI
SPI clock
3
TXD1
DO
UART transmit data
4
RXD1
DI
UART receive data

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5
1PPS
DO
One pulse per second
6
SPI_CS
DI
SPI chip select
7
SPI_MISO
DO
SPI master in salve out
8
NC
Not connected
9
NC
Not connected
10
GND
Ground

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4EVB Operation Procedures
This chapter mainly illustrates the operation procedures of LG69T (AA) EVB.
4.1. Communication through Micro-USB to UART Interface
Step 1: Connect the EVB to a PC with a Micro-USB cable through Micro-USB to UART interface, and
then switch S101 to ON state to power on the EVB.
Step 2: Run the USB flash drive on PC to install the USB driver. The USB port numbers can be
viewed through the PC Device Manager, as shown below.
Figure 8: USB Port
Step 3: Install and then use the QCOM tool provided by Quectel to realize the communication between
LG69T (AA) module and the PC.
The following figure shows the COM Port Setting interface of QCOM: select the correct “COM
Port” (USB port shown in the above figure) and set the correct “Baudrate” (the default value:
460800). For more details of QCOM usage, please refer to document [4].
Figure 9: COM Port Setting Interface of QCOM

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4.2. Firmware Upgrade
LG69T (AA) module supports firmware upgrade through Micro-USB to UART interface.
Step 1: Connect the EVB to a PC through a USB cable.
Step 2: Long press BOOT button (S202), and switch S101 to ON state to power on the EVB before
releasing S202.
Step 3: Run the GNSSFlashTool:
a) Click “Tool Options” “LG69TAA_DownLoad”.
b) Select the firmware package: click “Open File”to select the corresponding firmware path.
c) Select the COM port.
d) Click the “Baud rate” dropdown list and select “115200”.
e) Click the “START” button to upgrade the firmware.
ab
cde
Figure 10: GNSSFlashTool Configurations for Firmware Upgrade

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5Appendix A Reference
Table 6: Related Documents
Table 7: Terms and Abbreviations
SN
Document name
Remark
[1]
Quectel_LG69T_Hardware_Design
LG69T Hardware Design
[2]
Quectel_LG69T(AA)_GNSS_Protocol_Specification
LG69T (AA) GNSS Protocol Specification
[3]
Quectel_LG69T(AA)_Reference_Design
LG69T (AA) Reference Design
[4]
Quectel_QCOM_User_Guide
Quectel QCOM User Guide
Abbreviation
Description
DI
Digital Input
DO
Digital Output
EVB
Evaluation Board
GNSS
Global Navigation Satellite System
LED
Light Emitting Diode
PO
Power Output
PPS
Pulse Per Second
UART
Universal Asynchronous Receiver/Transmitter