LE910Cx HW Design Guide 1VV0301298 Rev.
LE910Cx HW User Guide APPLICABILITY TABLE This documentation applies to the following products: PRODUCTS DESCRIPTION LE910C1-NA North America – AT&T with global roaming LE910C1-NS North America - Sprint variant LE910C1-AP APAC variant CAT1 variant LE910C4-AP APAC variant CAT4 variant LE910C4-EU Europe CAT4 variant LE910C1-EU Europe CAT1 variant LE910C1-EUX Europe CAT1 variant LE910C4-NF North America CAT4 variant LE910C1-NF North America CAT1 variant LE910C1-SA North America CAT1 varia
LE910Cx HW User Guide CONTENTS APPLICABILITY TABLE 2 CONTENTS 3 1. INTRODUCTION 8 Scope 8 Audience 8 Contact Information, Support 8 Symbol Conventions 9 Related Documents 9 2. GENERAL PRODUCT DESCRIPTION 11 Overview 11 Applications 12 General Functionality and Main Features 12 Block Diagram 14 Environmental Requirements 16 2.5.1. Temperature Range 16 2.5.2. RoHS Compliance 16 Operating Frequency Bands 16 2.6.1. RF Bands per Regional Variant 16 2.6.2.
LE910Cx HW User Guide Absolute Maximum Ratings – Not Operational 35 Recommended Operating Conditions 35 Logic Level Specifications 36 4.3.1. 1.8V Pads - Absolute Maximum Ratings 36 4.3.2. 1.8V Standard GPIOs 36 4.3.3. 1.8V SD Card Pads 37 4.3.4. 1.8V SIM Card Pads 37 4.3.5. Dual Voltage Pads - Absolute Maximum Ratings 38 4.3.6. SD Card Pads @ 2.95V 38 4.3.7. SIM Card Pads @2.95V 38 5.
LE910Cx HW User Guide GSM/WCDMA/TD-SCDMA/LTE Antenna – PCB Line Guidelines 62 GSM/WCDMA/LTE Antenna – Installation Guidelines 63 Antenna Diversity Requirements 63 GNSS Antenna Requirements 64 7.5.1. Combined GNSS Antenna 65 7.5.2. Linear and Patch GNSS Antenna 65 7.5.3. Front End Design Considerations 65 7.5.4. GNSS Antenna – PCB Line Guidelines 66 7.5.5. GNSS Antenna – Installation Guidelines 66 8.
LE910Cx HW User Guide Indication of Software Ready 89 RTC – Real Time Clock 89 VAUX Power Output 89 ADC Converter 89 9.5.1. Description 89 9.5.2. Using the ADC Converter 90 Using the Temperature Monitor Function 90 GNSS Characteristics 90 MOUNTING THE MODULE ON YOUR BOARD 92 General 92 Finishing & Dimensions 92 Recommended Footprint for the Application 97 Stencil 99 PCB Pad Design 99 Recommendations for PCB Pad Dimensions (mm) 99 10. Solder Paste 100 10.7.1.
LE910Cx HW User Guide FCC/ISED Regulatory Notices 112 JTBL Regulatory Notices 117 NCC Regulatory Notices 117 ANATEL Regulatory Notices 118 13.5. Europe Approvals 118 13.5.1. RED Declaration of Conformity 118 13.5.2. UKCA Declaration of Conformity 118 13.5.3. RED/UKCA Antennas 119 14. PRODUCT AND SAFETY INFORMATION 120 Copyrights and Other Notices 120 14.1.1. Copyrights 120 14.1.2. Computer Software Copyrights 120 Usage and Disclosure Restrictions 121 14.2.1.
LE910Cx HW User Guide 1. INTRODUCTION Scope This document introduces the Telit LE910Cx module and presents possible and recommended hardware solutions for the development of a product based on this module. All the features and solutions described in this document are applicable to all LE910Cx variants listed in the applicability table. If a specific feature is applicable to a specific product only, it will be clearly marked. Note: LE910Cx refers to all modules listed in the Applicability Table.
LE910Cx HW User Guide Alternatively, use: https://www.telit.com/support For detailed information about where you can buy the Telit modules or for recommendations on accessories and components visit: https://www.telit.com To register for product news and announcements or for product questions contact Telit’s Technical Support Center (TTSC). Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improvements.
LE910Cx HW User Guide • LE910Cx Interface Board HW User Guide 1VV0301323 • LE910/LE920 Digital Voice Interface Application Note 80000NT11246A • Telit_LE920A4_LE910Cx_Wi-Fi_Interface_Application_Note_r1 80490NT11511A • Antenna Detection Application Note 80000NT10002A • High-Speed Inter-Chip USB Electrical Specification, version 1.0 (a supplement to the USB 2.0 specification, Section 3.8.
LE910Cx HW User Guide 2. GENERAL PRODUCT DESCRIPTION Overview LE910Cx is Telit’s new LTE series for IoT applications. In its most basic use case, the LE910Cx can be applied as a wireless communication front-end for telematics products, offering GNSS and mobile communication features to an external host CPU through its rich interfaces. LE910Cx is available in hardware variants as listed in Table 1: Applicability Table. For differences in the designated RF band sets – refer to Section 2.6.
LE910Cx HW User Guide The information presented in this document is believed to be accurate and reliable. However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement of patents or other rights of third parties which may result from its use. No license is granted implicitly or in any other way under any patent rights of Telit Communications S.p.A. except for circuitry embodied in Telit products. This document is subject to change without notice.
LE910Cx HW User Guide Function Features Application processor Application processor to run customer application code 32-bit ARM Cortex-A7 up to 1.3 GHz running the Linux operating system Flash + DDR are large enough to allow for customer’s own software applications Interfaces Rich set of interfaces, including: SD/MMC Card Interface supporting SD3.0 standard SDIO for external WiFi transceiver supporting SDIO3.0 standard SGMII for external Ethernet transceiver Compliant with IEEE802.
LE910Cx HW User Guide Note: The following interfaces are unique to the LE910Cx and may not be supported on other (former or future) xE910 family. Special care must be paid when designing the application board if future compatibility is required: - SGMII for Ethernet connectivity - SDIO for WIFI connectivity - SD/MMC for SD Card connectivity Warning: LE910C1-EUX, LE910C1-SAX and LE910C1-SVX models which are based on ThreadX OS, does not support the following functions.
LE910Cx HW User Guide • Application processor, Modem subsystem and Location processing with their external interfaces. These three functions are contained in a single SOC. • RF front end and antenna ports. • Digital Audio interface for external codec. • Rich IO interfaces. Depending on the LE910Cx software features enabled, some of its interfaces exported due to multiplexing may be used internally and therefore may not be usable by the application.
LE910Cx HW User Guide Environmental Requirements 2.5.1. Temperature Range Mode Temperature Operating temperature range Note -40 ~ +85°C Ambient. Temperatures outside of the range –20°C ÷ +55°C might slightly deviate from ETSI specifications. The module is fully functional, able to make and receive voice calls, data calls, SMS and GPRS traffic.
LE910Cx HW User Guide Region Variant 2G HSPA+ LTE FDD LTE TDD TDSCDMA LE910C1-NA 2, 3, 5, 8 1, 2, 4, 5, 8 2, 4, 12 - - LE910C1-NS - - 2, 4, 5, 12, 25, 26 - - LE910C1-AP - 1, 5, 6, 8, 19 1, 3, 5, 8, 9, 18, 19, 26, 28 - - LE910C4-AP - 1, 5, 6, 8, 19 1, 3, 5, 8, 9, 18, 19, 26, 28 - - LE910C4-EU 3, 8 1, 3, 8 1, 3, 7, 8, 20, 28A - - LE910C1-EU 3, 8 1, 3, 8 1, 3, 7, 8, 20, 28A - - LE910C1-EUX 3, 8 1, 3, 8 1, 3, 7, 8, 20, 28A - - LE910C4-NF - 2, 4, 5 2, 4, 5, 12,
LE910Cx HW User Guide Mode Freq. Tx (MHz) Freq.
LE910Cx HW User Guide Mode Freq. Tx (MHz) Freq. Rx (MHz) Channels Tx-Rx Offset LTE 1800 – B9 1749.9 ~ 1784.9 1844.9 ~ 1879.
LE910Cx HW User Guide Mode LTE TDD 2500 – B41M Freq. Tx (MHz) 2555 ~ 2655 Freq. Rx (MHz) 2555 ~ 2655 Table 5: RF Bands Characteristics 1VV0301298 Rev.
LE910Cx HW User Guide RF Parameters 2.7.1. Sensitivity Typical sensitivity levels are as follows: Mode Primary Diversity SIMO 3GPP PCS 1900 -107.5 - - -102 DCS 1800 -107.0 - - -102 GSM 850 -108.5 - - -102 EGSM 900 -107.5 - - -102 WCDMA 2100 – B1 -109.0 -110.0 -111.5 -106.7 WCDMA 1900 – B2 -109.5 -110.5 -112 -104.7 WCDMA 1800 – B3 -107.5 -109.5 -109.5 -103.7 WCDMA AWS – B4 -109.5 -110.0 -112 -106.7 WCDMA 850 – B5 -110.0 -111.0 -112.5 -104.
LE910Cx HW User Guide Mode Primary Diversity SIMO 3GPP LTE 700PS – B14 -98.0 -99.5 -100.5 -93.3 LTE 700b – B18 -99.0 -100.0 -101.5 -96.3 LTE 800 – B19 -99.0 -99.5 -101.5 -96.3 LTE 800 – B20 -99.0 -99.0 -101.5 -93.3 LTE 1900+ – B25 -96.5 -98.5 -98.5 -92.8 LTE 850+ – B26 -99.0 -100.0 -101.5 -93.8 LTE 700 – B28A/B -98.5 -100.5 -101.5 -94.8 LTE AWS-3 – B66 -98.0 -99.0 -100.5 -95.8 LTE600 – B71 -98.0 -97.5 -100.5 -93.5 LTE TDD 2600 – B38 -98.0 -98.5 -100.
LE910Cx HW User Guide Mechanical Specifications 2.8.1. Dimensions The module’s overall dimensions are: • Length: 28.2 mm, +/- 0.15 mm tolerance • Width: 28.2 mm, +/- 0.15 mm tolerance • Thickness: 2.2 mm, +/- 0.15 mm tolerance and The LE910Cx-WWX module’s overall dimensions are: • Length: 29.4 mm, +/- 0.15 mm tolerance • Width: 29.4 mm, +/- 0.15 mm tolerance • Thickness: 2.2 mm, +/- 0.15 mm tolerance Note: LE910C1-SV’s thickness is only 2.3mm, +/- 0.
LE910Cx HW User Guide 3. MODULE CONNECTIONS Pin-out PAD Signal I/O Function Type Comment USB HS 2.0 Communication Port B15 USB_D+ I/O USB differential Data (+) C15 USB_D- I/O USB differential Data (-) A13 USB_VBUS AI Power sense for the internal USB transceiver A14 USB_ID AI USB ID Power See note below Asynchronous UART N15 C103/TXD I Serial data input (TXD) from DTE 1.8V M15 C104/RXD O Serial data output to DTE 1.
LE910Cx HW User Guide PAD Signal I/O Function Type K12 SD/MMC_DATA2 I/O SD Serial Data 2 1.8/2.95V H12 SD/MMC_DATA3 I/O SD Serial Data 3 1.8/2.95V G13 SD/MMC_CD I SD card detect input 1.8V F13 VMMC - Power supply for MMC card pull-up resistors 1.8/2.95V Comment Active Low WiFi (SDIO) Interface N13 WiFi_SD_CMD O Wi-Fi SD Command 1.8V L13 WiFi_SD_CLK O Wi-Fi SD Clock 1.8V J13 WiFi_SD_DATA0 I/O Wi-Fi SD Serial Data 0 1.
LE910Cx HW User Guide PAD D2 Signal SIMVCC2 I/O Function Type - External SIM 2 signal – Power supply for SIM 2 1.8/2.85V Comment Digital Voice Interface (DVI) B9 DVI_WAO O Digital Voice interface (WAO master output) 1.8V B6 DVI_RX I Digital Voice interface (Rx) 1.8V B7 DVI_TX O Digital Voice interface (Tx) 1.8V B8 DVI_CLK O Digital Voice interface (CLK master output) 1.8V B12 REF_CLK O Reference clock for external Codec 1.
LE910Cx HW User Guide PAD Signal I/O Function Type R7 GPS_LNA_EN O Enables the external regulator for GPS LNA 1.8V N9 GPS_SYNC O GPS sync signal for Dead Reckoning 1.8V Comment Miscellaneous Functions R12 ON_OFF_N I Power ON / Power OFF input Active low R13 HW_SHUTDOWN_N I Unconditional Shutdown input Active low R11 VAUX/PWRMON O Supply output for external accessories / Power ON monitor 1.
LE910Cx HW User Guide PAD Signal I/O Function Type P1 VBATT_PA - Main Power Supply (RF Section) Power P2 VBATT_PA - Main Power Supply (RF Section) Power A2 GND - Ground B13 GND D4 GND - Ground E1 GND - Ground E2 GND - Ground E14 GND - Ground F2 GND - Ground G1 GND - Ground G2 GND - Ground G7 GND - Ground G8 GND - Ground G9 GND - Ground H1 GND - Ground H2 GND - Ground H7 GND - Ground H8 GND - Ground H9 GND - Ground J1 GND - G
LE910Cx HW User Guide PAD Signal I/O Function N5 GND - Ground N6 GND - Ground P3 GND - Ground P4 GND - Ground P5 GND - Ground P6 GND - Ground P8 GND - Ground P9 GND - Ground P10 GND - Ground P13 GND - Ground R2 GND - Ground R3 GND - Ground R5 GND - Ground R6 GND - Ground R8 GND - Ground R10 GND - Ground Reserved A8 Reserved - Reserved A9 Reserved - Reserved A10 Reserved - Reserved B2 Reserved - Reserved B3 Reserved - Rese
LE910Cx HW User Guide PAD Signal I/O Function D9 Reserved - Reserved D10 Reserved - Reserved D11 Reserved - Reserved D12 Reserved - Reserved D13 Reserved - Reserved D14 Reserved - Reserved E3 Reserved - Reserved F3 Reserved - Reserved F14 Reserved - Reserved G3 Reserved - Reserved G14 Reserved - Reserved H3 Reserved - Reserved H15 Reserved - Reserved J3 Reserved - Reserved J4 Reserved - Reserved J14 Reserved - Reserved J15 Reserved - Res
LE910Cx HW User Guide PAD P12 Signal Reserved I/O Function - Reserved - Reserved for future use. Not connected internally Type Comment Reserved for future use R4 RFU Can be tied to GND Table 7: Pin-out Note: When the UART signals are used as the communication port between the host and the modem, the RTS must be connected to GND (on the module side) if flow control is not used. If the UART port is not used, all UART signals can be left disconnected.
LE910Cx HW User Guide Signals That Must Be Connected Table 8 lists the LE910Cx signals that must be connected even if not used by the end application: PAD M1, M2, N1, N2, P1, P2 Signal Notes VBATT & VBATT_PA A2, B13, D4, E1, E2, E14, F2, G1, G2, G7, G8, G9, H1, H2, H7, H8, H9, J1, J2, J7, J8, J9, K2, L1, L2, M3, M4, M12, N3, N4, N5, N6, P3, P4, P5, P6, P8, P9, P10, P13, R2, R3, R5, R6, R8, R10 GND R12 ON/OFF Main power on off signal R13 HW_SHUTDOWN_N Emergency power off B15 USB_D+ If not used
LE910Cx HW User Guide LGA Pads Layout Figure 2: LGA Pads Layout Backward Compatibility to xE910 Family The LE910Cx is a new series in the xE910 form factor The LE910Cx is fully backward compatible with the previous xE910 in terms of: • Mechanical dimensions • Package and pin-map To support the extra features and additional interfaces, the LE910Cx introduces more pins than the xE910.
LE910Cx HW User Guide In this case, the new LE910Cx can be safely mounted on existing carrier boards designed for the previous xE910. The additional pins of the LE910Cx are shown in Figure 3 (marked Green) Figure 3: LE910Cx vs. LE910 Pin-out Comparison (top view) 1VV0301298 Rev.
LE910Cx HW User Guide 4. ELECTRICAL SPECIFICATIONS Absolute Maximum Ratings – Not Operational Warning: A deviation from the value ranges listed below may harm the LE910Cx module. Symbol Parameter Min Max Unit VBATT Battery supply voltage on pin VBATT -0.5 +6.0 [V] VBATT TRANSIENT Transient voltage on pin VBATT (< 10 ms) -0.5 +7.0 [V] VBATT_PA Battery supply voltage on pin VBATT_PA -0.3 +6.
LE910Cx HW User Guide Logic Level Specifications Unless otherwise specified, all LE910Cx interface circuits are 1.8V CMOS logic. Only few specific interfaces (such as MAC, USIM and SD Card) are capable of dual voltage I/O. The following tables show the specifications of the logic level used in the LE910Cx interface circuits. Note: Do not connect LE910Cx digital logic signals directly to OEM digital logic signals with a level higher than 2.7V for 1.8V CMOS signals. 4.3.1. 1.
LE910Cx HW User Guide Note: Pull-Up and Pull-Down resistance of GPIO3, GPIO7 and GPIO8 is different from the one mentioned above. GPIO3 pull resistance is specified as 10KΩ to 50KΩ 4.3.3. 1.8V SD Card Pads Pad Parameter Min Max Unit Comment VIH Input high level 1.27V 2V [V] VIL Input low level -0.3V 0.58V [V] VOH Output high level 1.4V -- [V] VOL Output low level 0 0.
LE910Cx HW User Guide Pad Parameter RPD Pull-down resistance Ci Input capacitance Min Max 10 Unit 100 [kΩ] 5 [pF] Comment Table 14: Operating Range – SIM Pads Working at 1.8V 4.3.5. Dual Voltage Pads - Absolute Maximum Ratings Parameter Min Max Input level on any digital pin when on -0.3V +3.6V Input voltage on analog pins when on -0.3V +3.6 V Table 15: Absolute Maximum Ratings - Not Functional 4.3.6. SD Card Pads @ 2.95V Pad Parameter Min Max Unit VIH Input high level 1.
LE910Cx HW User Guide Pad Parameter Min Max Unit VOH Output high level 2.25V 3.1V [V] VOL Output low level 0V 0.4V [V] IIL Low-level input leakage current -10 IIH High-level input leakage current RPU Pull-up resistance RPD Pull-down resistance Ci Input capacitance [uA] No pull-up 10 [uA] No pull-down 10 100 [kΩ] 10 100 [kΩ] 5 [pF] Table 17: Operating Range – For SIM Pads Operating at 2.95V 1VV0301298 Rev.
LE910Cx HW User Guide 5. HARDWARE COMMANDS Turning on the LE910Cx Module To turn on the LE910Cx module, the ON_OFF_N pad must be asserted low for at least 1 second and then released. The maximum current that can be drained from the ON/OFF # pad is 0.1 mA. This pin is pulled up internally; customers should expect to see ~ 800 mV on the output. Figure 4 illustrates a simple circuit to power on the module using an inverted buffer output.
LE910Cx HW User Guide Note: During the Initialization state, the AT commands are not available. The DTE host must wait for the Activation state before communicating with the LE910Cx Figure 5: LE910Cx Initialization and Activation A flow chart showing the proper turn on procedure is displayed below: Figure 6: Turn-on Procedure 1VV0301298 Rev.
LE910Cx HW User Guide Timing of VAUX/PWRMON and SW_RDY Models ON ↔ VAUX/PWRMON ON ↔ SW_RDY LE910C1-NA LE910C4-NS LE910C1-AP LE910C4-AP LE910C1-EU LE910C4-EU Typ. 21 sec Typ. 28 Sec Typ. 13 Sec Typ. 16 Sec Typ. 10 Sec Typ.
LE910Cx HW User Guide Note: To check whether the LE910Cx has completely powered on, monitor the SW_RDY hardware line. When SW_RDY becomes high, the module is completely powered on and is ready to accept AT commands. Note: During the SW initialization of the LE910Cx, the SW configures all pads and interfaces to the desired mode. When PWRMON goes high, this indicates that the initialization of all I/O pads is completed.
LE910Cx HW User Guide Figure 7: AT commands managing procedure Note: Waiting time for the AT commands answer can vary between different LE910Cx variants, between 2-6 sec.
LE910Cx HW User Guide Note: To avoid a back-powering effect, it is recommended to prevent any HIGH logic level signal from being applied to the module’s digital pins when it is powered OFF or during an ON/OFF transition. 5.3.1. Shutdown by Software Command The LE910Cx module can be shut down by a software command. When a shutdown command is sent, LE910Cx enters the Finalization state and at the end of the finalization process shuts down PWRMON/SW_RDY .
LE910Cx HW User Guide Usually, it will take more than 15 seconds from sending a shutdown command until a complete shutdown is achieved. The DTE host should monitor the status of PWRMON/SW_RDY to observe the actual power-off. Figure 9: Hardware Shutdown Note: To check whether the device has powered off, monitor the PWRMON/SW_RDY hardware line. When PWRMON/SW_RDY or goes low, the device has powered off. 5.3.3.
LE910Cx HW User Guide VBATT 200mS Sec < T_Hold SHDN_N T_RDY ~0 Sec SW_RDY V_AUX PWRMON T_PWRMON ~0 Sec Active State OFF State Figure 11: Power down timing using HW_SHUTDOWN_N Note: Recommended values are as follows: R2 = 47kΩ, R1 = 10kΩ. Note: Do not use any pull-up resistor on the HW_SHUTDOWN_N line or any totem pole digital output. Using a pull-up resistor may cause latch-up problems on the LE910Cx power regulator and improper functioning of the module.
LE910Cx HW User Guide Warning: Carefully follow the recommended procedure for shut down and power off. Failure to follow the recommended shut-down and power off procedures might damage the device and consequently void the warranty. Fast Power Down The gentle power down procedure is described in chapter 5.3.1 and 5.3.2. It normally takes more than 15 seconds to de-attach network and make LE910Cx internal filesystem properly closed.
LE910Cx HW User Guide Figure 12: Example for Fast Shut Down circuit Note: Consider the voltage drop under max current conditions when defining the voltage detector threshold in order to avoid unwanted shutdown. 1VV0301298 Rev.
LE910Cx HW User Guide Figure 13: Example of Timing diagram for Fast Shut Down The most important thing is that a system should give enough energy. The LE910Cx turns off safely for 30ms after the Fast Shut Down is triggered. Otherwise, unwanted memory corruption may occur. The VAUX pin can be used to check if the LE910Cx is turned off. If VUAX is low, LE910Cx is turned off. The following formula can be used to calculate Ctank value to provide the LE910Cx with sufficient energy during the Fast Shut Down.
LE910Cx HW User Guide Warning: Ctank associated with low ESR requires current limiting feature in the DCDC converter to avoid inrush current side effects. 5.5.2. Fast Shut Down by Software The Fast Power Down can be triggered directly by the AT command. 1VV0301298 Rev.
LE910Cx HW User Guide 6. POWER SUPPLY The power supply circuitry and board layout are very important parts of the full product design, with a critical impact on the overall performance of the product. Please read the following requirements and guidelines carefully to ensure a good and proper design. Power Supply Requirements The LE910Cx power requirements are as follows: Power Supply Value Nominal supply voltage 3.8V Supply voltage range 3.4V – 4.
LE910Cx HW User Guide Mode Average (Typ.) Mode Description 2.1mA Paging cycle #256 frames (2.56 sec DRx cycle) 2.1mA Paging cycle #128 frames (1.28 sec DRx cycle) 1.8mA Paging cycle #256 frames (2.
LE910Cx HW User Guide * The above currents in idle are measured when Status LED, which is controlled by AT#SLED, is turned off. See the AT Command User Guide for details about the AT#SLED section. Note: The current consumption of CFUN=0 mode could be 300uA higher than CFUN=5 mode to support the wake-up by RTS pin. For more details, please see the AT Command User Guide of AT+CFUN section. Note: Regarding the eDRX mode, please refer to 80502NT11758A, LE910C1/LE910C4 PSM Application Note.
LE910Cx HW User Guide 6.3.1. Electrical Design Guidelines The electrical design of the power supply strongly depends on the power source where this power is drained. Power sources can be divided into three categories: • +5V input (typically PC internal regulator output) • +12V input (typically automotive) • Battery 6.3.1.1. + 5V Input Source Power Supply – Design Guidelines • The desired output for the power supply is 3.8V.
LE910Cx HW User Guide 6.3.1.2. + 12V Input Source Power Supply – Design Guidelines • The desired output for the power supply is 3.8V. Due to the huge difference between the input source and the desired output, a linear regulator is unsuitable and must not be used. A switching power supply is preferable for its better efficiency, especially with the 2A peak current load expected during GSM Tx.
LE910Cx HW User Guide Figure 16: Example of Switching Regulator with 12V Input – Part 2 6.3.1.3. Battery Source Power Supply – Design Guidelines • The desired nominal output for the power supply is 3.8V, and the maximum voltage allowed is 4.2V. Hence, a single 3.7V Li-Ion cell battery type is suitable for supplying the power to the LE910Cx module. Note: Do not use any Ni-Cd, Ni-MH, and Pb battery types directly connected to the LE910Cx module.
LE910Cx HW User Guide • Average GPS current consumption during GPS tracking (LTE @ idle): mA (40mA). Note: The average consumption during transmission depends on the power level at which the device is requested to transmit via the network. Therefore, the average current consumption varies significantly. Note: The thermal design for the power supply must be made keeping an average consumption at the max transmitting level during calls of (LTE/HSPA)/GPRS plus average consumption in GPS Tracking mode.
LE910Cx HW User Guide 6.3.3. Power Supply PCB Layout Guidelines As seen on the guidelines for electrical design, the power supply shall have a low ESR capacitor on the output to cut the current peaks and a protection diode on the input to protect the supply from spikes and polarity inversion. The placement of these components is crucial for the correct operation of the circuitry. A misplaced component can be useless or can even decrease the power supply performances.
LE910Cx HW User Guide • The power supply input cables must be kept separate from noise sensitive lines, such as microphone/earphone cables. 1VV0301298 Rev.
LE910Cx HW User Guide 7. ANTENNA(S) Antenna connection and board layout design are the most important parts in the full product design, and they have a strong influence on the overall performance of the product. Read carefully and follow the requirements and guidelines for a good and proper design.
LE910Cx HW User Guide Furthermore, if the device is developed for the US and/or Canadian market, it must comply with FCC and/or IC approval requirements: This device is to be used only for mobile and fixed application. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all people and must not be co-located or operating in conjunction with any other antennas or transmitter.
LE910Cx HW User Guide • If EM-noisy devices are present on the PCB hosting the LE910Cx, such as fast switching ICs, take care to shield them with a metal frame cover. • If EM-noisy devices are not present around the line, geometries like Micro strip or Grounded Coplanar Waveguide are preferred because they typically ensure less attenuation if compared to a Strip line of the same length.
LE910Cx HW User Guide Note: If Rx Diversity is not used/connected, perfectly disable the Diversity functionality using the AT#RXDIV command (refer to Ref 1: LE910Cx AT Command User Guide) and connect the Diversity pad F1 to a 50 Ohm termination or floating GNSS Antenna Requirements LE910Cx supports an active antenna. It is recommended to use antennas as follow: • An external active antenna (17dB typ. Gain, GPS only) • An external active antenna plus GNSS pre-filter (17dB typ.
LE910Cx HW User Guide Note: It is recommended to add PI matching network near the GPS connector on the application board in case that RF matching is needed. 7.5.1. Combined GNSS Antenna The use of a combined RF/GNSS antenna is NOT recommended. This solution can generate extremely poor GNSS reception. Furthermore, the combination of antennas requires an additional diplexer, which adds significant power loss in the RF path. 7.5.2.
LE910Cx HW User Guide 7.5.4. GNSS Antenna – PCB Line Guidelines • Ensure that the antenna line impedance is 50 Ohm. • Keep the line on the PCB as short as possible to reduce the loss. • The antenna line must have uniform characteristics, constant cross section, avoiding meanders and abrupt curves. • Keep one layer of the PCB used only for the Ground plane; if possible. • Surround (on the sides, top and bottom) the antenna line on the PCB with Ground.
LE910Cx HW User Guide 8. HARDWARE INTERFACES Table 25 summarizes all the hardware interfaces of the LE910Cx module. Interface LE910Cx SGMII For Ethernet support HSIC x1 (Optional) SD/MMC x1 dual voltage interface for supporting SD/MMC card SDIO For WIFI support (1.8V only) USB USB2.
LE910Cx HW User Guide Table 26 lists the USB interface signals. Signal Pad No. Usage USB_VBUS A13 Power and cable detection for the internal USB transceiver. Acceptable input voltage range 2.5V – 5.
LE910Cx HW User Guide HSIC Interface (Optional) The application processor exposes a High-Speed Inter-Chip (HSIC). HSIC eliminates the analog transceiver from a USB interface for lower voltage operation and reduced power dissipation. Further details will be provided in a future release of this document.
LE910Cx HW User Guide Note: ETH_INT_N is a 1.8V input. It has an internal pull up to 1.8V inside the module thus it should be connected to an open drain interrupt pin of the Ethernet PHY. In case the PHY does not support 1.8V I/O, proper level shifter needs to be used. Serial Ports The serial port is typically a secondary interface between the LE910Cx module and OEM hardware.
LE910Cx HW User Guide RS232 Pin# 3 Signal Pad No.
LE910Cx HW User Guide Note: According to V.24, Rx/Tx signal names refer to the application side; therefore, on the LE910Cx side, these signal are in the opposite direction: TXD on the application side will be connected to the receive line (here named TXD/ RX_UART) of the LE910Cx serial port and vice versa for Rx. Note: The DTR pin is used to control the UART and system sleep Pulling the DTR pin down prevents the UART and the entire module from entering low power mode.
LE910Cx HW User Guide 8.4.3. RS232 Level Translation To interface the LE910Cx with a PC COM port or an RS232 (EIA/TIA-232) application, a level translator is required. This level translator must perform the following actions: • Invert the electrical signal in both directions • Change the level from 0/1.8V to +15/-15V The RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with lower levels on the RS232 side (EIA/TIA-562), allowing a lower voltage-multiplying ratio on the level translator.
LE910Cx HW User Guide Figure 17: RS232 Level Adaption Circuitry Example Note: In this case, the length of the lines on the application must be taken into account to avoid problems in the case of high-speed rates on RS232. The RS232 serial port lines are usually connected to a DB9 connector as shown in Figure 18. Signal names and directions are named and defined from the DTE point of view.
LE910Cx HW User Guide • 1.8V CMOS level • Up to 50 MHz clock rate Note: The LE910Cx module supports Master mode only and cannot be configured as Slave mode. PAD Signal I/O Function Type Comment F15 SPI_CLK O SPI clock output 1.8V E15 SPI_MISO I SPI data Master input Slave output 1.8V Shared with RX_AUX D15 SPI_MOSI O SPI data Master output Slave input 1.8V Shared with TX_AUX H14 SPI_CS O SPI chip-select output 1.
LE910Cx HW User Guide Note: SW emulated I2C on GPIO lines is only supported from the modem side. For more information, refer to Ref 1: LE910Cx AT Command User Guide for command settings. Note: To keep backward compatibility with previous LE910 products, it is recommended to keep using the SW emulated I2C available on GPIO’s 1-10. 8.5.3. SD/MMC Card Interface The LE910Cx provides an SD port supporting the SD3.
LE910Cx HW User Guide PAD Signal I/O VMMC - Function Power supply for MMC card pull-up resistors F13 Type 1.8/2.95V Comments Max Current is 50mA Table 31: SD Card Signals Figure 20 shows the recommended connection diagram of the SD interface.
LE910Cx HW User Guide Note: Qualcomm QCA9377 WiFi chipset may be supported on some of the LE910Cx variants. Please contact your Telit representative for more details. The LE910Cx SDIO port supports the SDIO 3.0 specification at 1.8V CMOS only, so it cannot be used as an external SD/MMC card connection. The LE910Cx module supports an LTE/WiFi coexistence mechanism via the WCI (Wireless Coexistence Interface) port, which connects between the module and the external WiFi IC.
LE910Cx HW User Guide PAD Signal I/O Function Type Comments B9 DVI_WA0 O Digital Audio Interface (WA0) B-PD 1.8V PCM_SYNC I2S_WS B6 DVI_RX I Digital Audio Interface (RX) B-PD 1.8V PCM_DIN I2S_DIN B7 DVI_TX O Digital Audio Interface (TX) B-PD 1.8V PCM_DOUT I2S_DOUT B8 DVI_CLK O Digital Audio Interface (CLK) B-PD 1.8V PCM_CLK I2S_CLK B12 REF_CLK O Audio Master Clock B-PD 1.
LE910Cx HW User Guide • Sample rates of 8 kHz and 16 kHz I2S • Master mode • Sample rate 8KHz, 16KHz • Sample-width is 16bit only. • Supported I2S standard only - Phillips I2S Bus Specifications revised June 5, 1996 In addition to the DVI port, the LE910Cx module provides a master clock signal (REF_CLK on Pin B12) which can either provide a reference clock to an external codec or form an PCM/I2S interface together with the DVI port where the REF_CLK acts as the MCLK.
LE910Cx HW User Guide Parameter Comments Min Typ Max Unit t(sync) PCM_SYNC cycle time - 125 - µs t(synca) PCM_SYNC asserted time - 488 - ns t(syncd) PCM_SYNC de-asserted time - 124.
LE910Cx HW User Guide Figure 22: Auxiliary PCM Timing Parameter Comments Min Typ Max Unit - 125 - µs t(auxsync) AUX_PCM__SYNC cycle time t(auxsynca) AUX_PCM_SYNC asserted time 62.4 62.5 - µs t(auxsyncd) AUX_PCM_SYNC de-asserted time 62.4 62.5 - µs t(auxclk) AUX_PCM_CLK cycle time - 7.8 - µs t(auxclkh) AUX_PCM_CLK high time 3.8 3.9 - µs t(auxclkl) AUX_PCM_CLK low time 3.8 3.9 - µs t(suauxsync) AUX_PCM_SYNC setup time to AUX_PCM_CLK rising 1.
LE910Cx HW User Guide Parameter Comments Min Typ Max Unit t(suauxdin) AUX_PCM_DIN setup time to AUX_PCM_CLK falling 70 - - ns t(hauxdin) AUX_ PCM_DIN hold time after AUX_PCM_CLK falling 20 - - ns t(pauxdout) Delay from AUX_PCM_CLK to AUX_PCM_DOUT valid - - 50 ns Table 35: AUX_PCM_CODEC Timing Parameters 8.6.1.3. I2S Digital Audio Diagram 1VV0301298 Rev.
LE910Cx HW User Guide Figure 23: I2S timing diagram Note LE910Cx family supports both PCM/I2S. Parameter Comments Min Typ Max Unit - - 12.288 MHz Clock period 81.380 - - ns t(HC) Clock high 0.45*T - 0.55*T ns t(LC) Clock low 0.45*T - 0.55*T ns t(sr) SD and WS input setup time 16.276 - - ns t(hr) SD and WS input hold time 0 - - ns t(dtr) SD and WS output delay - 65.100 ns t(htr) SD and WS output hold time 0 - - ns - - 12.288 MHz Clock period 81.
LE910Cx HW User Guide The Input pads can only be read, reporting the digital values (high / low) present on the pad at the time of reading. The Output pads can only be written or queried and set values on the pad output. Pads with alternative function can be internally controlled by the LE910Cx firmware and act according to the implementation. The following GPIOs are always available as a primary function on the LE910Cx. PAD Signal I/O Function Type Note C8 GPIO_01 I/O Configurable GPIO CMOS 1.
LE910Cx HW User Guide PAD Signal I/O Initial Function Alternate Function Type R14 GPIO_31 I/O UART_RI Configurable GPIO CMOS 1.8V P14 GPIO_32 I/O UART_DSR Configurable GPIO CMOS 1.8V N14 GPIO_33 I/O UART_DCD Configurable GPIO CMOS 1.8V M14 GPIO_34 I/O UART_DTR Configurable GPIO CMOS 1.8V F15 GPIO_35 I/O SPI_CLK Configurable GPIO CMOS 1.8V E15 GPIO_36 I/O SPI_MISO Configurable GPIO CMOS 1.8V D15 GPIO_37 I/O SPI_MOSI Configurable GPIO CMOS 1.
LE910Cx HW User Guide 8.7.2. Using a GPIO Pad as an interrupt / Wakeup source GPIO pads used as inputs can also be used as an interrupt source for software. In general, all GPIO pads can also be used as an interrupt. However, not all GPIO’s can be used as a wakeup source of the module (wakeup from sleep). Only the following GPIO’s can be used for waking up the system from sleep: • GPIO1 • GPIO4 • GPIO5 • GPIO8 8.7.3. Using a GPIO Pad as Output The GPIO pads, when used as outputs, can drive 1.
LE910Cx HW User Guide 9. MISCELLANEOUS FUNCTIONS Indication of Network Service Availability The STAT_LED pin status shows information on the network service availability and call status. In the LE910Cx module, the STAT_LED usually needs an external transistor to drive an external LED. The STAT_LED does not have a dedicated pin. The STAT_LED functionality is available on GPIO_01 pin (by default GPIO_01 functions as STAT_LED) See the AT Command User Guide for details about the AT#SLED section.
LE910Cx HW User Guide Indication of Software Ready The SW_RDY signal provides indication on the module’s ability to receive commands. As long as the SW_RDY is asserted low, it indicates that the LE910Cx has not finished booting yet. Once the SW_RDY is asserted high, it indicates that the LE910Cx is ready to receive commands. The SW_RDY does not have a dedicated pin. The SW_RDY functionality is available on GPIO_08 pin (by default GPIO_08 functions as SW_RDY).
LE910Cx HW User Guide Item Min Max Units Input voltage range 0.1 1.7 Volt AD conversion - 8 bits Resolution - < 6.6 mV Table 41: ADC Parameters 9.5.2. Using the ADC Converter An AT command is available to use the ADC function. The command is AT#ADC=1,2. The read value is expressed in mV. Refer to Ref 1: LE910Cx AT Command User Guide for the full description of this function.
LE910Cx HW User Guide Table 42: GNSS Characteristics Note: The sensitivity level has a deviation about +/- <2dB each model and device 1VV0301298 Rev.
LE910Cx HW User Guide 10. MOUNTING THE MODULE ON YOUR BOARD General The LE910Cx module is designed to be compliant with a standard lead-free soldering process. Finishing & Dimensions The below figure shows the mechanical dimensions of the LE910Cx module. Pin B1 3 x Route Inhibit Lead-free Alloy: Surface finishing Ni/Au for all solder pads Figure 26: LE910Cx Mechanical Dimensions (Bottom View) except for LE910Cx-WWX 1VV0301298 Rev.
LE910Cx HW User Guide Figure 26-1: LE910Cx-WWX Mechanical Dimensions (Bottom View) Note: LE910Cx-WWX mechanical dimension is bigger than other LE910Cx variants Please, refer to 10.3 section for detail information. 1VV0301298 Rev.
LE910Cx HW User Guide Figure 27: LE910Cx Mechanical Dimensions (Top view) with two kinds of shield design except for LE910Cx-WWX 1VV0301298 Rev.
LE910Cx HW User Guide Figure 28: LE910Cx-WWX Mechanical Dimensions (Top view) Note: LE910Cx-AP/NA/NS/EU/NF/ST/SA has two sheild design and LE910Cx-SV/SVX/LA/CN/EUX/SAX/WWX has one shield design. 1VV0301298 Rev.
LE910Cx HW User Guide Figure 29: LE910Cx Mechanical Dimensions (Side view) except for LE910C1-SV and -SVX Figure 30: LE910C1-SV and SVX Mechanical Dimensions (Side view) 1VV0301298 Rev.
LE910Cx HW User Guide Recommended Footprint for the Application Figure 31 and 31-1 shows the recommended footprint for the application board (dimensions are in mm). To facilitate the replacement of the LE910Cx module if necessary, it is suggested to design the application board with a 1.5 mm placement inhibit area around the module. It is also suggested, as a common rule for an SMT component, to avoid having a mechanical part of the application board in direct contact with the module.
LE910Cx HW User Guide Figure 32-1: Recommended Footprint - Top View, 181 pads for LE910Cx-WWX only Note: LE910Cx-WWX footprint is same as LE910Cx variants but PCB size is differenct others. Please, refer to above dimension for LE910Cx-WWX. 1VV0301298 Rev.
LE910Cx HW User Guide Stencil The layout of the stencil openings can be the same as the recommended footprint (1:1). The suggested thickness of stencil foil is greater than 120 µm. PCB Pad Design The solder pads on the PCB are recommended to be of the Non-Solder Mask Defined (NSMD) type. Figure 33: PCB Pad Design Recommendations for PCB Pad Dimensions (mm) Figure 34: PCB Pad Dimensions 1VV0301298 Rev.
LE910Cx HW User Guide It is not recommended to place a via or micro-via not covered by solder resist around the pads in an area of 0.15 mm unless it carries the same signal as the pad itself. Micro vias inside the pads are allowed. Holes in pad are only allowed for blind holes and not for through holes. Finish Layer Thickness (um) Electro-less Ni / Immersion Au 3-7 / 0.05-0.
LE910Cx HW User Guide Warning: The above solder reflow profile represents the typical SAC reflow limits and does not guarantee adequate adherence of the module to the customer application throughout the temperature range.
LE910Cx HW User Guide • Cleaning with water or any organic solvent can lead to capillary effects where the cleaning solvent is absorbed into the gap between the module and the host board or even leaks inside the module (due to the gap between the module shield and PCB). The combination of soldering flux residues and encapsulated solvent could lead to short circuits between conductive parts. The solvent could also damage the module label. • Ultrasonic cleaning could damage the module permanently.
LE910Cx HW User Guide 11.
LE910Cx HW User Guide Bypass capacitors are needed to alleviate this behaviour. The behaviour can appear differently depending on the various applications. Customers need to pay special attention to this issue when designing their application board. The length and width of the power lines must be carefully considered, and the capacitance of the capacitors must be selected accordingly. The capacitor will also prevent power supplies ripple and switching noise caused in TDMA systems, such as GSM.
LE910Cx HW User Guide Note: The resistor value on SIMIO pulled up to SIMVCC must be defined to be compliant with the 3GPP specification for USIM electrical testing. The LE910Cx module contains an internal pull-up resistor of 10K Ω on SIMIO. However, the un-mounted R1 option in the application can be used to tune SIMIO timing if necessary.
LE910Cx HW User Guide • Users who use a UART interface only to communicate with the LE910Cx module must arrange for a UART port in the host system to debug or upgrade the LE910Cx when it is mounted. 11.5.1. Fast Boot mode Fast boot mode is normally used by Telit SW to enter SW download mode Fast boot is triggered by GPIO_09 (PAD L15). Asserting this signal high (1.8V) during boot will force the system into Fast boot 11.5.2.
LE910Cx HW User Guide 12. PACKING SYSTEM Packing System – Tray The LE910Cx modules are packaged on trays of 36 pieces each as shown in Figure 37. These trays can be used in SMT processes for pick & place handling. Figure 37: Packing 1VV0301298 Rev.
LE910Cx HW User Guide Figure 38: Tray Drawing 1VV0301298 Rev.
LE910Cx HW User Guide Tape & Reel The LE910Cx can be packaged on reels of 200 pieces each. See figure for module positioning into the carrier. Figure 39: Module Positioning into the Carrier Figure 40: Carrier Tape Detail 1VV0301298 Rev.
LE910Cx HW User Guide Figure 41: Reel Detail Figure 42: Detail Figure 43: Reel Box Detail 1VV0301298 Rev.
LE910Cx HW User Guide Moisture Sensitivity The LE910Cx module is a Moisture Sensitive Device Level 3, in accordance with standard IPC/JEDEC J-STD-020. Comply with all the requirements for using this kind of components. 1VV0301298 Rev.
LE910Cx HW User Guide 13. CONFORMITY ASSESSMENT ISSUES FCC/ISED Regulatory Notices Information for the OEMs and Integrators The following statement must be included with all versions of this document supplied to an OEM or integrator but should not be distributed to the end user. 1. This device is intended for OEM integrators only. 2.
LE910Cx HW User Guide product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. The end product with an embedded module may also need to pass the FCC Part 15 unintentional emission testing requirements and be properly authorized per FCC Part 15 Trace antenna designs See 7.2 GSM/WCDMA/TD-SCDMA/LTE Antenna - PCB Line Guidelines Summary of the specific operational use conditions See apart 7.
LE910Cx HW User Guide Frequency Band Freq [MHz] LE910C1 -NA Gain [dBi] LE910C1 -NS Gain [dBi] LE910C1/C4 -NF Gain [dBi] LE910C1 -SV Gain [dBi] LE910C1/C4 -LA Gain [dBi] LE910C1 -SA Gain [dBi] LE910C1 -SAX Gain [dBi] LE910C1 -ST Gain [dBi] LE910C1/C4 -WWX Gain [dBi] 850 MHz 850 3.64 6.08 6.12 NA 3.5 NA NA NA 3.62 1900 MHz 1900 2.51 8.01 8.01 NA 9.5 8.01 8.00 8.01 8.51 1700 MHz 1700 5.00 5.00 5.00 6.00 13.0 5.00 5.00 5.00 5.50 900 MHz 900 5.
LE910Cx HW User Guide equipment generates, uses and can radiate radio 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.
LE910Cx HW User Guide LE910C1 ST Contains FCC ID: RI7LE910C1ST Contains IC: 5131A-LE910C1ST LE910C1/C4 LA Contains FCC ID: RI7LE910CXLA Contains IC: 5131A-LE910CXLA LE910C1/C4 WWX Contains FCC ID: RI7LE910CXWWX Contains IC: 5131A-LE910CXWWX L'appareil hôte doit être étiqueté comme il faut pour permettre l'identification des modules qui s'y trouvent. L'étiquette de certification du module donné doit être posée sur l'appareil hôte à un endroit bien en vue en tout temps.
LE910Cx HW User Guide LE910C1 ST Contains FCC ID: RI7LE910C1ST Contains IC: 5131A-LE910C1ST LE910C1/C4 LA Contains FCC ID: RI7LE910CXLA Contains IC: 5131A-LE910CXLA LE910C1/C4 WWX Contains FCC ID: RI7LE910CXWWX Contains IC: 5131A-LE910CXWWX CAN ICES-3 (B) / NMB-3 (B) This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de classe B est conforme à la norme canadienne ICES-003.
LE910Cx HW User Guide Product name: WWAN module NCC logo: NCC ID: CCAF19Z10050T8 NCC safety warning statement: “減少電磁波影響，請妥適使用” ANATEL Regulatory Notices "Este equipamento não tem direito à proteção contra interferência prejudicial e não pode causar interferência em sistemas devidamente autorizados" "This equipment is not entitled to protection against harmful interference and must not cause interference in duly authorized systems" LE910C1-LA Homologation # 05818-19-02618 LE910C1-AP Homologation # 04679-1
LE910Cx HW User Guide The UKCA requirements can be found here: https://www.gov.uk/guidance/using-the-ukca-marking 13.5.3. RED/UKCA Antennas This radio transmitter has been approved under RED / UKCA to operate with the antenna types listed below with the maximum permissible gain indicated. The usage of a different antenna in the final hosting device may need a new assessment of host conformity to RED / UKCA. 1VV0301298 Rev.
LE910Cx HW User Guide 14. PRODUCT AND SAFETY INFORMATION Copyrights and Other Notices SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Although reasonable efforts have been made to ensure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from the use of the information contained herein. The information in this document has been carefully checked and is believed to be reliable.
LE910Cx HW User Guide copyrighted products. Accordingly, any copyrighted computer programs contained in Telit’s products described in this instruction manual shall not be copied (reverse engineered) or reproduced in any manner without the express written permission of the copyright owner, being Telit or the 3rd Party software supplier.
LE910Cx HW User Guide 14.2.5. 3rd Party Rights The software may include 3rd Party’s software Rights. In this case the user agrees to comply with all terms and conditions imposed in respect of such separate software rights. In addition to 3rd Party Terms, the disclaimer of warranty and limitation of liability provisions in this License, shall apply to the 3rd Party Rights software as well.
LE910Cx HW User Guide • • it can interfere with other electronic devices, particularly in environments such as hospitals, airports, aircrafts, etc. there is a risk of explosion such as gasoline stations, oil refineries, etc. It is the responsibility of the user to enforce the country regulation and the specific environment regulation. Do not disassemble the product; any mark of tampering will compromise the warranty validity.
LE910Cx HW User Guide 15.
LE910Cx HW User Guide 16. DOCUMENT HISTORY Revision 34 Date 2021-10-22 Changes Update WWXD Variant Table 18: Add WWX Variant Table 20 : Update Current consumption Table 48: GNSS Characteristics updated 8.6.1. Update Audio interface (Update ThreadX Support Audio) 13.1. FCC/ISED Regulatory Notices updated for LE910Cx-WWX 13.5. Europe Approvals section added 33 2021-07-01 Section 1.5 – Updated Related Documents Section 5.1 – Added flow chart for turn on and AT command managing procedure Section 6.
LE910Cx HW User Guide Revision 25 Date 2020-06-15 Changes Section 8 – Hardware Interfaces; USB part updated Section 8.1 – Note Updated Table 45 and 4 - EUX variant added Table 46 – CAT 4 DL/UL Tput swapped Section 14.1 ANATEL Regulatory Notices – Homologation No. fixed Section 2.7.1 Sensitivity – Sensitivity Table added Section 2.2. Applications – E-call comment deleted Table 47 – Sensitivity level changed Sections 7.4 Antenna Diversity Requirements – Note comment changed Section 7.
LE910Cx HW User Guide Revision Date Changes Section 7.5 – Note added for passive or active ANT installation Table 36 – Network Service Availability Indication updated 13 2019-05-14 Table 1 and 4 LE910C1-xx bis Variants removed Section 3.2 and 7– Note for C1 bis variants removed 12 2019-04-23 Table 1, 4 – Added variants Table 19,21 – Added comment 11 2019-03-22 Section 10.7.1 – Warning comment added 10 2019-03-13 Section 2.8.1 – Note added for C1-SV variant Section 3.
LE910Cx HW User Guide Revision 3 Date 2018-07-18 Changes Section 2.8.1 - Fixed typo related to module size General - Align cross reference links across the document 2 2018-06-14 Template update and pagination update Section 1.5 – Updated AT Command UG reference Section 2.6.1 - Updated Band support table Section 6.3.2 - Updated Thermal design guidelines Section 8.3 - Removed “optional” term from Ethernet interface 1.13 2018-05-17 Added new variant LE910C1-NF Section 2.6.
LE910Cx HW User Guide Revision Date Changes Section 8.3.1 – Added clarification regarding ETH_INT_N pin. 1.07 2017-07-23 Adding a note for power supply section 1.06 2017-07-10 Renaming the product from LE910Cx to LE910C1 1.05 2017-06-18 Section 6.1 – Updated power consumption tables 1.04 2017-05-25 Section 14.1 – Added Labelling Requirements for the Host device 1.03 2017-04-23 Section 11.4: Updated ESD values Updated Reference document table Section 8.
LE910Cx HW User Guide Revision Date Changes Updated serial port 2 section Updated SPI port section Updated 1.8V pads pull info Updated AUX UART section Updated GPIO section Updated mechanical drawing (Cosmetic) 0.3 2016-11-13 Added information for GPIO usage as Interrupt Added clarification for AUX_UART location and backward compatibility 0.2 2016-09-05 Minor edits 0.1 2016-08-30 First Draft 1VV0301298 Rev.
