L720 EVB User Manual Version： V1.
L720 EVB User Manual Notice Some features of the product and its accessories described herein rely on the software installed, capacities and settings of local network, and therefore may not be activated or may be limited by local network operators or network service providers. Thus, the descriptions herein may not exactly match the product or its accessories which you purchase.
FCC Caution: (1)Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter.
L720 EVB User Manual Version History Date Version Description of change 2020-08-3 V1.0 Author Initial Contents 1 ABOUT THIS DOCUMENT....................................................................................
L720 EVB User Manual 1.1 Scope of applications......................................................................................................................... 5 1.2 Writing purpose................................................................................................................................. 5 1.3 Support and reference documentation list...................................................................................... 6 1.4 Abbreviations.........................................
L720 EVB User Manual 6.3 Driver install.....................................................................................................................................23 6.4 Dial configuration............................................................................................................................
L720 EVB User Manual 1 About this document 1.1 Scope of applications This document describes the basic specifications of the L720 IoT Module EVB (hereinafter referred to as the L720) series product electrical characteristics, design guidance and hardware interface development guidance. Users should design according to this document requirement and guidance. This document is only applicable to the application development of L720 series products. 1.
L720 EVB User Manual 4Application interface Introduce L720 module and L720 EVB application interface 5Accessory and Assembly Introduce L720 EVB Accessory and assembly(hardware and software) 1.3 Support and reference documentation list In addition to the hardware development documentation, we also provide the development board operation instruction manual and software development instruction manual based on this product. Table 1-1 is support for the list. Table 1- 1Support document list No.
L720 EVB User Manual SDCC Secure Digital Card Controller USIM UniversalSubscriber Identification Module SPI Serial Peripheral Interface I2C Inter-Integrated Circuit PCM Pulse-coded Modulation I/O Input/output LED Light Emitting Diode GPIO General-purpose Input/Output GSM Global Standard for Mobile Communications GPRS General Packet Radio Service CDMA Code Division Multiple Access WCDMA Wideband Code Division Multi Access UMTS Universal Mobile Telecommunication System HSDPA High Sp
L720 EVB User Manual 2 Abstract L720 Evaluation Board (silkscreen L506_EVB ) Is specially designed for developing L720 serial module， To help developers to develop, debug, test L720 series 4 GIoT LTE module. Below and mark shows L720 the main functions of the development board. In this article, we will in the subsequent chapters on the function of each part is described. Figure 2-1: L720 EVB global graph The above picture description: 1. The L720 USB port is on the EPI board, not on the EVB. 2.
L720 EVB User Manual 3 Power Supply L720 development board provides two methods for power supply: External DC 5 V adapter and 3.8 V DC power supply directly. Through an external DC 5 V adapter power supply, the power supply voltage regulator on the development board piece of power supply will be converted to about 3.8 V, power supply for the module. These two modes can be switched by S1. Switch S1 to the top when using DC 5V adapter and Switch S1 to the bottom when using battery power.
L720 EVB User Manual 4 Key Description L720 development board with a total of 5 top pressure switch and 14 dial switch. 5 top pressure for short press trigger control, 14 dial switch (single pole double throw) for the long time state toggle switch. The corresponding function on the L720 development board has a corresponding printing information, the function of the specific instructions are as follows: 4.1 Power on/off and RESET key When power supply for the EVB, the power indicator will light up.
L720 EVB User Manual Normally on, the watchdog function is enabled, the system will feed the dog regularly. The watchdog button is mainly used for software debug.
L720 EVB User Manual 5 Application interface 5.1 UART DB9 Interface There is a DB9 COM port on the L720 development board, and its signal pin is consistent with the signal on the L720 module. The serial interface as the main serial port can support complete 9 line RS232. The COMS 1.8v level on the L720 module is converted to the standard RS232 level via serial port level conversion chip SP3238.
L720 EVB User Manual Figure5-2: USB（AT UART）Port 5.3 USB（DEBUG UART）Interface When software is debugging and analyzing problems, LOG can be captured by USB virtual DEBUG serial port. In use, you need to dial the switch S4 to the left. After the serial port is inserted into USB, DB9 serial port is closed. Sending AT can only use the USB virtual serial port mentioned in 5.2. Figure5-3: USB（DEBUG UART）Port 5.4 USB 2.0 Interface The L720 module supports USB 2.0 with a maximum USB transfer rate of 480Mbps.
L720 EVB User Manual Figure5-4: USB 2.0 Port 5.5 SIMCard Interface L720 support one single voltage (1.8V) SIM interface, but for the convenience of users, we have provided two SIM holder interface. it’s standard SIM card slot and Micro SIM card slot.
L720 EVB User Manual 5.6 Headset Interface If the audio codec chip MAX9867ETJ+ is used in L506_EVB_V3, the MIC input and sound output are through headphone channels. Earphones need to use Chinese standard earphones. Figure5-6: Chinese standard earphone 5.
L720 EVB User Manual Note: L720 has only one main antenna interface, and the user can only use ANT_MAIN as the antenna interface when it is actually used. 5.8 Audio interface（TBD） The L720 module supports 1-channel PCM channel, which can also be reused as I2S signal. When using, switch S2 and S3 are needed to cooperate. The switch S2 is a software and hardware switch.
L720 EVB User Manual Note: Audio system is a very complicate system, it contains many factors, such as the sound chamber structure. Because in our EVB there is no sound chamber, so it only make sure the function is OK or not. 5.9 LED indicating lamp The development board has 13 functional indicators to indicate the status of different functional units.
L720 EVB User Manual LED12 SPI_CLK SPI/GPIO Multiplexing channel LED13 SPI_MOSI SPI/GPIO Multiplexing channel LED14 SPI_CS SPI/GPIO Multiplexing channel Table 5-1: LED Figure5-9: Status indicator Note: For configuration and inquiry of each indicator light and toggle switch, please refer to the L720 software manual document 5.10 The others Development board reserved 1 groups of external connection pin interface, used for debugging the peripheral devices and production test purpose.
L720 EVB User Manual Figure5-10：For Test Module Main Interface In addition, for the convenience of users, we also can all use the module to the interface of the derivation, using 2.54 mm spacing standard dupont line can be connected.
L720 EVB User Manual 10 NC 2 I2C_SCL 1 PCM_CLK 8 NC 6 NC 4 NC 2 NC 4 SPI_MISO_BLSP2 3 PCM_IN I2C/SPI/PCM 6 I2C_SDA 5 PCM_OUT 8 SPI_CS_N_BLSP2 7 PCM_SYNC 10 GND 9 VPH_PWR 8 SPK_OUT_P1 7 MIC1_IN_P 10 SPK_OUT_N1 9 MIC1_IN_M Audio 2 EAR_OUT_N 1 MIC1_P 4 EAR_OUT_P 3 MIC1_N 6 GND 5 GND Table 5-2 Note: the above figure and above table are the corresponding relations between form and practice.
L720 EVB User Manual 6 Accessories and Assembly 6.1 EVB Assembly EVB board parts altogether consists of four parts: 1) the EVB board substrate, 2) module board, 3) module loading board connection EVB board substrate connection column and nuts, 4) EVB board pillar base plate and screw.
L720 EVB User Manual 6.2 EVB Accessory L720 development board will provide the corresponding accessories, when unpacking the case, please check the accessories are complete. Under normal circumstances, A complete set of equipment should include power adapter (A) DC power supply line, Micro USB cable (B), (C) rod antenna, (D) RF cable line. As shown in the figure below: Figure 6-2：Accessories and the connection diagram 6.2 .
L720 EVB User Manual 6.3 Driver install Unzip file:qud.win.1.1_installer_10061.1.zip.zip and click setup.
L720 EVB User Manual Select “I accept the terms in the license agreement”, then Next Copyright© Shanghai Mobiletek Communication Ltd 24
L720 EVB User Manual Check “Always trust software from “QUALCOMM” Incorporated”, then Install Power on the L720 module and connect USB cable, Drivers have been installed successfully if the Device Manager panel display the following: Copyright© Shanghai Mobiletek Communication Ltd 25
L720 EVB User Manual 6.4 Dial configuration Please refer to the following steps to complete third dial-up configuration. The testing card is china mobile SIM 1. Open win->Computer(right click) ->Properties->Device Manager 2. On Advance TAB, type AT+CGDCONT=1,”IP”,”CMNET” NOTES: The third argument for APN, defined by operators.
L720 EVB User Manual 3.
L720 EVB User Manual Copyright© Shanghai Mobiletek Communication Ltd 28
L720 EVB User Manual Type Dial-up phone number, User name, Password, then Connect NOTES: *99***1# cmnetcmnet just for china mobile Please consult the operators to obtain information before connect Copyright© Shanghai Mobiletek Communication Ltd 29
L720 EVB User Manual Copyright© Shanghai Mobiletek Communication Ltd 30
L720 EVB User Manual Connected to the network successfully Copyright© Shanghai Mobiletek Communication Ltd 31
