Quectel LTE OPEN EVB User manual

LTE OPEN EVB
User Guide
LTE Module Series
Rev. LTE_OPEN_EVB_User_Guide_V1.1
Date: 2018-03-19
Status: Released
www.quectel.com

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About the Document
History
Revision
Date
Author
Description
1.0
2017-12-29
Woody WU/
Lorry XU
Initial
1.1
2018-03-19
Eden LIU
Updated the GPIO List for AG35-QuecOpen
module (Table 27).

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Contents
About the Document...................................................................................................................................2
Contents.......................................................................................................................................................3
Table Index...................................................................................................................................................5
Figure Index.................................................................................................................................................6
1Introduction..........................................................................................................................................8
1.1. Safety Information ...................................................................................................................8
2General Overview...............................................................................................................................10
2.1. Applicable Modules...............................................................................................................10
2.2. Key Features.........................................................................................................................11
2.3. Interface Overview.................................................................................................................13
2.4. Top View of LTE OPEN EVB.................................................................................................16
3EVB Kit Accessories Assembly .......................................................................................................17
3.1. EVB Kit ..................................................................................................................................17
3.2. EVB KitAccessories..............................................................................................................18
4Interface Applications .......................................................................................................................20
4.1. Power Interfaces (J0301/J0601)...........................................................................................20
4.2. LTE-QuecOpen TE-A Interface .............................................................................................22
4.3. Wi-Fi & Ethernet TE-A Interface............................................................................................22
4.4. USB Interface (J0601)...........................................................................................................25
4.5. Audio Interfaces.....................................................................................................................26
4.5.1. Digital Audio Codec Board Interface (J0804).................................................................26
4.5.2. Analog Audio Interfaces (J0805/J0801/J0802)..............................................................28
4.5.2.1. Loudspeaker Interface (J0805)............................................................................ 28
4.5.2.2. Earphone Interface (J0802) ................................................................................. 28
4.5.2.3. Handset Interface (J0801).................................................................................... 30
4.6. U(SIM) Interface (J0901).......................................................................................................31
4.7. SD Card Interfaces & eMMC (J0701/J0702 & U0702).........................................................33
4.8. UART Interfaces (J0501/J0502/J0503).................................................................................38
4.9. SPI Flash (U0601).................................................................................................................42
4.10. EEPROM (U0903).................................................................................................................43
4.11. Switches and Buttons............................................................................................................44
4.12. Status Indicators....................................................................................................................45
4.13. GPIO Interfaces.....................................................................................................................46
4.14. Test Points.............................................................................................................................50
5Operation Procedures Illustration....................................................................................................56
5.1. Power on Modules.................................................................................................................56
5.1.1. Power on LTE-QuecOpen Modules...............................................................................56
5.1.2. Power on Wi-Fi Modules................................................................................................56
5.2. Communication Via USB or UART Interface.........................................................................57

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5.2.1. Communication via USB Interface.................................................................................57
5.2.2. Communication via UART Interface...............................................................................58
5.3. Firmware Upgrade.................................................................................................................59
5.4. Reset Modules.......................................................................................................................59
5.5. Power off Modules.................................................................................................................60
5.5.1. Power off LTE-QuecOpen modules...............................................................................60
5.5.2. Power off Wi-Fi modules................................................................................................60
6Appendix A References.....................................................................................................................61

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Table Index
TABLE 1: KEY FEATURES OF LTE OPEN EVB................................................................................................11
TABLE 2: INTERFACES OF LTE OPEN EVB................................................................................................... 13
TABLE 3: ACCESSORIES LIST........................................................................................................................ 18
TABLE 4: S0201 FUNCTION............................................................................................................................. 24
TABLE 5: S1001 FUNCTION............................................................................................................................. 24
TABLE 6: WI-FI & ETHERNET FUNCTION GPIO CONFIGURATION............................................................. 25
TABLE 7: CODEC FUNCTION GPIO CONFIGURATION................................................................................. 27
TABLE 8: PIN DEFINITION OF J0802.............................................................................................................. 29
TABLE 9: PIN DEFINITION OF J0801.............................................................................................................. 31
TABLE 10: PIN DEFINITION OF J0901 ............................................................................................................ 32
TABLE 11: (U)SIM HOT-PLUG GPIO CONFIGURATION................................................................................. 33
TABLE 12: PIN DEFINITION OF J0701 ............................................................................................................ 35
TABLE 13: PIN DEFINITION OF J0702 ............................................................................................................ 36
TABLE 14: S0701 FUNCTION .......................................................................................................................... 36
TABLE 15: SD CARD FUNCTION GPIO CONFIGURATION ........................................................................... 37
TABLE 16: EMMC FUNCTION GPIO CONFIGURATION................................................................................. 38
TABLE 17: PIN DEFINITION OF J0501 ............................................................................................................ 39
TABLE 18: PIN DEFINITION OF J0502 ............................................................................................................ 40
TABLE 19: PIN DEFINITION OF J0503 ............................................................................................................ 40
TABLE 20: COM (MAIN) & COM (UART1) FUNCTION GPIO CONFIGURATION........................................... 41
TABLE 21: SPI FLASH FUNCTION GPIO CONFIGURATION ......................................................................... 43
TABLE 22: EEPROM FUNCTION GPIO CONFIGURATION............................................................................ 44
TABLE 23: DESCRIPTION OF SWITCHES AND BUTTONS........................................................................... 45
TABLE 24: DESCRIPTION OF STATUS INDICATION LEDS........................................................................... 46
TABLE 25: PIN DEFINITION OF J0202 ............................................................................................................ 46
TABLE 26: PIN DEFINITION OF J0201 ............................................................................................................ 47
TABLE 27: GPIO LIST FOR AG35-QUECOPEN MODULE.............................................................................. 48
TABLE 28: PIN DEFINITION OF TEST POINTS .............................................................................................. 51
TABLE 29: INDICATION OF D0312 .................................................................................................................. 57
TABLE 30: RELATED DOCUMENTS................................................................................................................ 61
TABLE 31: TERMS AND ABBREVIATIONS...................................................................................................... 61

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Figure Index
FIGURE 1: LTE OPEN EVB INTERFACE OVERVIEW..................................................................................... 13
FIGURE 2: LTE OPEN EVB TOP VIEW............................................................................................................ 16
FIGURE 3: LTE OPEN EVB KIT........................................................................................................................ 17
FIGURE 4: EVB KIT ACCESSORIES ............................................................................................................... 18
FIGURE 5: POWER SUPPLY SCHEMATIC FOR LTE OPEN EVB.................................................................. 21
FIGURE 6: POWER INTERFACES................................................................................................................... 21
FIGURE 7: POWER PLUG DESIGN................................................................................................................. 21
FIGURE 8: CONNECTION BETWEEN LTE-QUECOPEN TE-AAND EVB...................................................... 22
FIGURE 9: SIMPLIFIED FC20-TE-A/AF20-TE-A INTERFACE SCHEMATIC .................................................. 23
FIGURE 10: SIMPLIFIED SDC1 INTERFACE SCHEMATIC............................................................................ 23
FIGURE 11: CONNECTION BETWEEN FC20-TE-AAND EVB ....................................................................... 24
FIGURE 12: WI-FI & ETHERNET FUNCTION GPIO CONFIGURATION......................................................... 25
FIGURE 13: REFERENCE DESIGN FOR CONNECTION BETWEEN CODEC BOARD AND EVB ............... 26
FIGURE 14: CONNECTION BETWEEN CODEC BOARD AND EVB.............................................................. 27
FIGURE 15: CODEC FUNCTION GPIO CONFIGURATION............................................................................ 27
FIGURE 16: REFERENCE CIRCUIT DESIGN FOR LOUDSPEAKER INTERFACE J0805 ............................ 28
FIGURE 17: REFERENCE CIRCUIT DESIGN FOR EARPHONE INTERFACE J0802................................... 28
FIGURE 18: PIN ASSIGNMENT OF J0802....................................................................................................... 29
FIGURE 19: SKETCH OF AUDIO PLUG .......................................................................................................... 30
FIGURE 20: REFERENCE CIRCUIT DESIGN FOR HANDSET INTERFACE J0801 ...................................... 30
FIGURE 21: PIN ASSIGNMENT OF J0801....................................................................................................... 31
FIGURE 22: SIMPLIFIED INTERFACE SCHEMATIC FOR U(SIM) CARD CONNECTOR J0901................... 32
FIGURE 23: PIN ASSIGNMENT OF J0901....................................................................................................... 32
FIGURE 24: (U)SIM HOT-PLUG GPIO CONFIGURATION.............................................................................. 33
FIGURE 25: SIMPLIFIED INTERFACE SCHEMATIC FOR SD CARD INTERFACE J0701, J0702................. 34
FIGURE 26: PIN ASSIGNMENT OF J0701....................................................................................................... 34
FIGURE 27: PIN ASSIGNMENT OF J0702....................................................................................................... 34
FIGURE 28: EMMC DEVICE............................................................................................................................. 35
FIGURE 29: SD CARD FUNCTION GPIO CONFIGURATION......................................................................... 37
FIGURE 30: EMMC FUNCTION GPIO CONFIGURATION.............................................................................. 37
FIGURE 31: UART BLOCK DIAGRAM ............................................................................................................. 38
FIGURE 32: PIN ASSIGNMENT OF J0501....................................................................................................... 39
FIGURE 33: PIN ASSIGNMENT OF J0502....................................................................................................... 39
FIGURE 34: PIN ASSIGNMENT OF J0503....................................................................................................... 40
FIGURE 35: COM (MAIN) & COM (UART1) FUNCTION GPIO CONFIGURATION........................................ 41
FIGURE 36: SPI FLASH DEVICE ..................................................................................................................... 42
FIGURE 37: SPI FLASH FUNCTION GPIO CONFIGURATION....................................................................... 42
FIGURE 38: EEPROM DEVICE........................................................................................................................ 43
FIGURE 39: EEPROM FUNCTION GPIO CONFIGURATION.......................................................................... 43
FIGURE 40: S0201/S0701/S1001 SWITCH ..................................................................................................... 44
FIGURE 41: S0301/S0401 SWITCH AND S0403/S0402 BUTTON.................................................................. 44

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FIGURE 42: STATUS INDICATION LEDS ........................................................................................................ 45
FIGURE 43: GPIO JUMPERS J0201 AND J0202............................................................................................. 46
FIGURE 44: TEST POINT J1004/J1005/J1006 ................................................................................................ 50
FIGURE 45: TEST POINT J1003/J0505/J1007/J10204/J0203......................................................................... 51
FIGURE 46: USB PORTS ................................................................................................................................. 57
FIGURE 47: COM PORT SETTING FIELD ON QCOM (USB AT PORT CONNECTION)................................ 58
FIGURE 48: USB SERIAL PORT...................................................................................................................... 58
FIGURE 49: COM PORT SETTING FIELD ON QCOM (USB SERIAL PORT CONNECTION)....................... 58
FIGURE 50: QFLASH CONFIGURATIONS FOR FIRMWARE UPGRADE...................................................... 59

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1Introduction
This document describes how to use the evaluation board (LTE OPEN EVB) of Quectel LTE-QuecOpen
and Wi-Fi modules. It is an assistant tool for engineers to develop and test Quectel LTE-QuecOpen and
Wi-Fi modules.
1.1. Safety Information
The following safety precautions must be observed during all phases of the operation, such as usage,
service or repair of any cellular terminal or mobile incorporating Quectel LTE-QuecOpen and Wi-Fi modules.
Manufacturers of the cellular terminal should send the following safety information to users and operating
personnel, and incorporate these guidelines into all manuals supplied with the product. If not so, Quectel
assumes no liability for customers’failure to comply with these precautions.
Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. You must comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is
switched off. The operation of wireless appliances in an aircraft is forbidden, so as
to prevent interference with communication systems. Consult the airline staff about
the use of wireless devices on boarding the aircraft, if your device offers an
Airplane Mode which must be enabled prior to boarding an aircraft.
Switch off your wireless device when in hospitals, clinics or other health care
facilities. These requests are designed to prevent possible interference with
sensitive medical equipment.
Cellular terminals or mobiles operating over radio frequency signal and cellular
network cannot be guaranteed to connect in all conditions, for example no mobile
fee or with an invalid (U)SIM card. While you are in this condition and need
emergent help, please remember using emergency call. In order to make or
receive a call, the cellular terminal or mobile must be switched on and in a service
area with adequate cellular signal strength.

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Your cellular terminal or mobile contains a transmitter and receiver. When it is ON,
it receives and transmits radio frequency energy. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potentially explosive atmospheres, obey all posted signs to turn
off wireless devices such as your phone or other cellular terminals. Areas with
potentially explosive atmospheres include fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders, etc.

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2General Overview
The LTE OPEN EVB is designed for developers to develop applications based on Quectel
LTE-QuecOpen modules.
2.1. Applicable Modules
The EVB can test basic functionalities of the following modules:
LTE-QuecOpen modules:
EC2x-QuecOpen 1)
BG96-QuecOpen
AG35-QuecOpen
Wi-Fi modules:
FC20 series 2)
AF20 3)
1. 1) EC2x-QuecOpen refers to EC21/EC25/EC20 R2.0/EC20 R2.1-QuecOpen modules.
2. 2) FC20 series contains FC20 and FC20-N, and it is used in combination with Quectel
EC2x-QuecOpen modules. Hereinafter, it is called FC20 collectively.
3. 3) AF20 is used in combination with QuectelAG35-QuecOpen module.
NOTES

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2.2. Key Features
The following table describes the detailed features of LTE OPEN EVB.
Table 1: Key Features of LTE OPEN EVB
Features
Implementation
Power Supply
DC power supply (J0301 or J0601): 4.5V~5.5V, typically 5.0V
VBAT (T0104)1): 3.8V
LTE TE-A Interface
Support Quectel LTE-QuecOpen modules: EC2x/BG96/AG35-QuecOpen
Wi-Fi & Ethernet TE-A
Interface
Support Quectel Wi-Fi modules: FC20/AF20
eMMC Device
Manufacturer: MICRON
Part number: MTFC4GACAJCN-4M IT
SD Card Interface
Support standard SD card and TF card
SPI Flash Device
Manufacturer: GIGADEVICE
Part number: GD25LQ64CWIGR
EEPROM Device
Manufacturer: ATMEL
Part number: AT24CS64-SSHM-T
U(SIM) Interface
Support U(SIM) card insertion detection
Support U(SIM) card: 3.0V and 1.8V
Audio Interfaces
One digital audio codec board interface
Support Realteck ALC5616 and TI Codec TLV320AIC3104
Three analog interfaces used for loudspeaker, earphone and
handset
UART Interfaces
Three UART interfaces:
COM (MAIN):
Serial interface for data communication
Maximum baud rate supported: 1Mbps 2)
COM (DEBUG):
Serial interface for debugging purpose
Maximum baud rate supported: 1Mbps 2)
COM (UART1):
Serial interface for data communication
Maximum baud rate supported: 1Mbps 2)
USB Interface
Micro-B interface
Signal Indicators
4 LEDs are available for signal indication
4 LEDs are available for GPIO testing

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1. 1) VBAT (T0104) is a test point on LTE OPEN EVB, and is used to test the current of the modules. If it
is used to supply power for the modules, then R0106 should be disconnected.
2. 2) The maximum baud rate is limited to the RS232 level shifter chip on the EVB. For the maximum
baud rates supported by the modules, please refer to their respective hardware designs.
Switches and Buttons
Five Switches:
Power Switch (S0301) for VBAT ON/OFF control
SDC1 function switch (S0201) for switching between GPIO and Wi-Fi
function.
SDC2 function switch (S0701) for switching between SD and eMMC
functions.
PCM function switch (S1001) for switching between BT and codec
functions.
Switch S0401 reserved for internal testing.
Two Buttons:
PWRKEY (S0403) for turning on/off LTE-QuecOpen modules
RESET (S0402) for resetting LTE-QuecOpen modules
Physical Characteristics
Size: 200.0mm ×145.0mm ×1.6mm
NOTES

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2.3. Interface Overview
COM1 (MAIN)
J0301 J0601
S0301
S0402
Micro-USB
J0901
Power
supply
Power
Switch
RESET
D0310
J0502
S0403
PWRKEY
D0311D0312 D0313
Wi-Fi &
Ethernet TE-A
SD Card
GND
J0401
J0403
(U)SIM Card
Connector
J0503
COM2 (UART1)
ADC1
J1005
J1002 J1001
60Pin 60Pin
J0102
J0101
100Pin
100Pin
J0701
J1004
J1007
S0201
J0804
60Pin
J1006
J0802
Earphone
LTE-QuecOpen
TE-A
Codec Board
Interface
Handset
J0801
Test Point
200mm
145mm
S0701
J0501
COM2 (DEBUG)
D0204D0203D0202D0201
J1003
J0505
J0404
J0405
ADC0 ADC2
J0204
J0202 J0201
J0203
S1001
S0401
J0902
(U)SIM Card
Connector
Test Point
Test Point
Test Point
Test Point
Test PointTest Point
Test Point
Test Point
J0702
GND
J0602
Reserved
eMMC
U0702
EEPROM
U0903
SPI
FLASH
U0601
VBAT
GND
Figure 1: LTE OPEN EVB Interface Overview
Table 2: Interfaces of LTE OPEN EVB
Interface
Reference No.
Description
Power
Interfaces1)
J0301
(bottom side)
The power jack on the EVB
Typical supply voltage: +5V
J0601
Micro-B USB power supply
Typical supply voltage: +5V
VBAT, GND
Test points on the EVB to test the current of
LTE-QuecOpen modules
Typical supply voltage: +3.8V
If VBAT is used to supply power for LTE-QuecOpen

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modules, then R0106 must be disconnected
Micro-B USB
Interface
J0601
USB device interface
Power Switch
S0301
VBAT ON/OFF control
PWRKEY
S0403
Power key (push button), used to turn on/off LTE-QuecOpen
modules
J0401
Jumper wire used to connect PWRKEY to GND
RESET
S0402
Reset button (push button), used to reset LTE-QuecOpen
modules
SDC1 Function
Switch
S0201
Switched to left: connect the GPIO interface of J0203 to
the module’s SDC1 interface, for testing customers’ own
modules
Switched to right: connect SDIO interface of FC20 and
AF20 modules to SDC1 interface of LTE-QuecOpen
modules
SDC2 Function
Switch
S0701
Switched to left: connect SD card interface of EVB to
SDC2 interface of LTE-QuecOpen modules
Switched to right: connect eMMC to SDC2 interface of
LTE-QuecOpen modules
PCM Function
Switch
S1001
Switched to left: connect BT interface (PCM) of AF20 to
the PCM interface of AG35 module
Switched to right: connect the codec board interface
(J0804) on EVB to the PCM interface of LTE-QuecOpen
modules
Switch
S0401
Reserved for internal testing. Switch it to down by default.
Audio Interfaces
J0804
Codec board interface
J0805
Used for loudspeaker
Used to test the analog audio function of LTE-QuecOpen
modules
J0802
Used for earphone
Used to test the analog audio function of LTE-QuecOpen
modules
J0801
(bottom side)
Used for handset
Used to test the analog audio function of LTE-QuecOpen
modules
U(SIM)
Interfaces
J0901
U(SIM) card connector 1
J0902
U(SIM) card connector 2 (Reserved)

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1) The power supply interfaces are designed for LTE-QuecOpen modules. For details about the power
supply for Wi-Fi modules, please refer to Chapter 4.1 and Chapter 4.3.
UART
Interfaces
J0501
(bottom side)
Debug UART port
J0502
(bottom side)
Main UART port
J0503
(bottom side)
UART1 port
Status
Indicators
D0310, D0311,
D0312, D0313,
D0201, D0202,
D0203, D0204,
D0310: VBAT ON/OFF indicator
D0311: power ON/OFF status indicator for
LTE-QuecOpen modules
D0312: network status indicator for LTE-QuecOpen
modules
D0313: power saving mode status indicator for
BG96-QuecOpen module
D0201~D0204: used for GPIO testing, and a high level
will light up the LEDs
TE-A Interfaces
J0101, J0102
Connectors for LTE-QuecOpen TE-A
J0804
Connector for codec board interface
J1001, J1002
Connectors for of Wi-Fi & Ethernet TE-A
ADC Interfaces
J0403, J0404,
J0405
Insert the jumper cap: connect the analog signals on
EVB to the module’s ADC interface
Pull out the jumper cap: external analog signals can be
connected to the connectors’ upper pins
GPIO Interfaces
J0201, J0202
The GPIO pins can be short-circuited to other functional pins
via the jumper caps.
Test Points
J0203, J0204,
J0505, J1003,
J1004, J1005,
J1006, J1007
Test pins
NOTE

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2.4. Top View of LTE OPEN EVB
The top view of LTE OPEN EVB is shown as following figure.
Figure 2: LTE OPEN EVB Top View

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3EVB Kit Accessories Assembly
3.1. EVB Kit
Figure 3: LTE OPEN EVB Kit

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3.2. EVB Kit Accessories
All accessories of LTE OPEN EVB kit are listed as below.
USB to RS-232 converter cable
and driver disk
Bolts and
coupling nuts
GNSS antenna
USB driver disk
Codec boards
RF cables
Micro-USB cable
Earphone
Main antennas
Wi-Fi
antenna
Instruction sheet
Figure 4: EVB Kit Accessories
Table 3: Accessories List
Items
Description
Quantity
Cables
USB to RS-232 converter cable
1
Micro-USB cable
1
RF cables
4
Antennas
Main antennas
2
GNSS antenna (passive)
1

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The main antenna can also be used for diversity reception.
Wi-Fi antenna
1
Audio
Earphone
1
Disks
USB 2.0 to RS-232 driver and USB driver disk
2
Codec Boards
ALC5616 and TLV320AIC3104 codec boards
2
Others
Bolts and coupling nuts for assembling EVB
1
Instruction Sheet
A sheet of paper giving instructions for EVB
connection, details of EVB accessories, etc.
1
NOTE