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Cavli Wireless C42QM Hardware Manual

Lte cat m1/nb2 and egprs module
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Cavli C42QM Hardware Manual
Cavli C42QM
LTE CAT M1/NB2 and
EGPRS Module
Integrated eSIM
Hardware Manual
Pre-release Version 1.4
www.cavliwireless.com
www.cavliwireless.com
1

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Summary of Contents for Cavli Wireless C42QM

  • Page 1 Cavli C42QM Hardware Manual Cavli C42QM LTE CAT M1/NB2 and EGPRS Module Integrated eSIM Hardware Manual Pre-release Version 1.4 www.cavliwireless.com www.cavliwireless.com...
  • Page 2 Cavli C42QM Hardware Manual Connect to our website and feel free to contact our technical support team for any assistance. Cavli Inc., 99 South Almaden Blvd., Suite 600, San Jose, California, 95113 Web: www.cavliwireless.com IoT Connectivity Platform: www.cavlihubble.io Support Centre https://www.cavliwireless.com/support-center.html...
  • Page 3 Cavli C42QM Hardware Manual Version History Version Description Release Date • Initial Version 28/06/2023 • Updated entire document as per the new updated 23/08/2023 design. • Updated the Pin Interface as per the new design. 20/11/2023 • Updated Voltage definition tables •...
  • Page 4 2.4 Module Working Mode......................... 12 3 Interface application description ....................13 3.1 Chapter Overview .......................... 13 3.2 Module interface ........................... 14 3.2.1 C42QM Pin layout .................................. 14 3.2.2 C42QM Pin interface ................................15 3.2.3 Absolute maximum Ratings ............................15 3.2.4 Operating Conditions ................................ 16 3.3 Power Interface ..........................
  • Page 5 Cavli C42QM Hardware Manual 3.7 USIM interface..........................25 3.7.1 USIM card reference circuit ............................26 3.8 General purpose GPIO interface ....................27 3.9 Indication interface ........................27 3.9.1 Network status ..................................28 3.10 Control Interface ......................... 29 3.11 PCM/I2S interface ........................29 3.12 ADC interface ..........................
  • Page 6 6 Structural and mechanical properties ..................52 6.1 Chapter overview........................... 52 6.2 Module structural image ......................52 6.3 C42QM module mechanical size ....................53 7 Packaging and production ......................56 7.1 Chapter overview ........................... 56 7.2 Module packaging and storage ....................56 7.3 Production welding ........................
  • Page 7 Cavli C42QM Hardware Manual Table of Figures Figure 1 Functional block diagram of the C42QM module ..................11 Figure 2 C42QM module Interface definition (Top view) ..................14 Figure 3 USB connection design circuit diagram ....................... 23 Figure 4 USIM design circuit diagram ......................... 26 Figure 5 Net light circuit diagram ..........................
  • Page 8 Cavli C42QM Hardware Manual Introduction This document is the Hardware Manual of Cavli Wireless solution product C42QM Smart Module, which describes: ✓ The hardware composition and functional features of the module ✓ The definition and usage of the application interface ✓...
  • Page 9 Due to the complete RF/BB integrated architecture and power optimized dedicated micro controller for sensor hub, C42QM can deliver ultra-low power consumption and smaller form factor design and fit into the Internets of things applications.
  • Page 10 Cavli C42QM Hardware Manual 2.2 Module characteristics Table 1 Characteristic Table Characteristic Description Physical properties 26.5mm*22.5mm*2.3mm Application processor Arm Cortex-A7 up to 800 MHz with 256 KB L2 cache Working voltage 3.4V – 4.2V Typical Voltage 3.7 V ✓ Standard SIM interface, support 3.0V/1.8V, support hot- swapping function ✓...
  • Page 11 NOTE • The C42QM module recommends working at - 35°C to +75°C environment. It is suggested that the application terminal adopt temperature control measures under harsh conditions. At the same time, some RF indexes may exceed the limit. At the same time, it is suggest11111ed to be stored under a certain temperature •...
  • Page 12 Cavli C42QM Hardware Manual 2.4 Module Working Mode Table 2 Module working Mode Working mode Description Turn off the machine In the case of shutdown, the module is fully powered off. The module closes the module RF circuit, unable to interact with the Flight Mode network.
  • Page 13 Cavli C42QM Hardware Manual Interface application description 3.1 Chapter Overview This chapter mainly describes the interface definition and application of this module. It contains the following sections: • Module interface • Power interface • Switching machine reset mode • USB interface •...
  • Page 14 Cavli C42QM Hardware Manual 3.2 Module interface 3.2.1 C42QM Pin layout C42QM pins are assigned as follows： Figure 2 C42QM module Interface definition (Top view) NOTE • All RESERVED and unused pins are to be left floating. www.cavliwireless.com...
  • Page 15 Cavli C42QM Hardware Manual 3.2.2 C42QM Pin interface The C42QM module has the LGA interface. The module interface definition is shown in the following table Table 3 I/O Parameter Definition Type Description PAD ATTRIBUTE Two-way input and output Power input...
  • Page 16 Cavli C42QM Hardware Manual Table 4 Absolute Maximum ratings Pin Type V_min V_max -0.3V 2.09V 3.4V 4.2V 3.2.4 Operating Conditions The operating voltages are listed below. Table 5 Operating Conditions Pin Type V_min (if applicable) V_typical V max (if applicable) 1.65V...
  • Page 17 Cavli C42QM Hardware Manual USB_DM Differential Data bus (-) I2S_MCLK I2S Master clock SPI_CLK SPI Clock SPI_CS_N Slave select SPI_MISO Master input slave output PWRKEY_N Powe ON trigger SPI_MOSI Master output slave input RSTN Reset the module W_DISABLE# Flight mode control...
  • Page 18 Cavli C42QM Hardware Manual UART2_RXD UART2 reception UART2_TXD UART2 transmission RESERVED Do not connect RESERVED Do not connect RESERVED Do not connect RESERVED Do not connect I2C2_SCL I2C2 clock signal I2C2_SDA I2C3 data signal USIM_DET USIM detection USIM_VDD USIM power supply...
  • Page 19 Cavli C42QM Hardware Manual RESERVED Do not connect Ground Pin Ground Pin 50Ω ANT_MAIN RF_IO Main Antenna impedance Ground Pin Ground Pin RESERVED Do not connect GPIO3 Configurable I/O Pin GPIO4 Configurable I/O Pin GPIO5 Configurable I/O Pin Ground Pin...
  • Page 20 Cavli C42QM Hardware Manual Ground Pin Ground Pin Ground Pin RESERVED Do not connect RESERVED Do not connect GPIO6 Configurable I/O Pin GPIO7 Configurable I/O Pin GPIO8 Configurable I/O Pin GPIO9 Configurable I/O Pin Ground Pin Ground Pin Ground Pin...
  • Page 21 ,73,74,79,80,81,82,89,9 0,91,100,101,102 The C42QM module can be powered by a single power supply mode. ✓ The module has 4 channels of power supply, two VBAT_BB and two VBAT_RF pins. ✓ The module power supply range is between 3.4V - 4.2V ✓...
  • Page 22 Cavli C42QM Hardware Manual 3.4 Switching machine reset mode 3.4.1 Boot The module can be turned on by pressing PWRKEY for at least 500ms. The user can check the same by querying the high and low levels of the VDD_EXT pin.
  • Page 23 Cavli C42QM Hardware Manual 3.5 USB interface Table 10 Interface Pin Definition Pin no. Signal name Description USB_DP USB differential signal + USB_DM USB differential signal - Module as USB slave device, supporting USB dormancy and wakeup mechanism. The USB interface...
  • Page 24 Cavli C42QM Hardware Manual 3.6 UART interface 3.6.1 UART1 Serial Port (Debug UART) Pin 22 and pin 23 of the module are UART1 serial port pins. UART1 serial ports can be used for debugging purposes. The pins are defined as follows: Table 11 Debug Serial Port Pin Definition Pin no.
  • Page 25 Data transmission UART3_RXD Data Reception 3.7 USIM interface The C42QM module provides a USIM card interface. The USIM card power supply is provided by the module's internal power manager and supports 1.8V/3.0V Table 12 SIM Card Signal Definition Signal name...
  • Page 26 Cavli C42QM Hardware Manual 3.7.1 USIM card reference circuit The C42QM module does not come with a USIM card slot. Users need to design a USIM card slot on their own interface board. The USIM card interface reference circuit is as follows:...
  • Page 27 General input / output port GPIO7 General input / output port GPIO8 General input / output port GPIO9 General input / output port 3.9 Indication interface The C42QM module provides an open-drain GPIO signal to indicate the status of the RF communication. www.cavliwireless.com...
  • Page 28 Cavli C42QM Hardware Manual 3.9.1 Network status C42QM provides one network status indication pin: NETLIGHT. The pin is used to drive a network status indication LED. The following tables describe the pin definition and logic level changes of NETLIGHT in different network activity status.
  • Page 29 ✓ C42QM provides one Pulse Code Modulation (PCM) / I2S interface. ✓ C42QM have common I2S and PCM interfaces, it can be used either as I2S or PCM. ✓ The module provides a set of hardware bidirectional serial buses with an I2S interface Table 17 PCM/I2S Interface Pin no.
  • Page 30 Figure 6 PCM to analog voice map 3.12 ADC interface The C42QM provides two analog-to-digital converter interfaces to read the voltage value. ✓ The ADC interface input voltage cannot exceed VBAT ✓ It is recommended that the ADC pin be input with a voltage divider circuit Table 18 ADC Pin Definitions Pin no.
  • Page 31 Pin no. GNSS antenna interface ANT_GNSS RF_I (50Ω impedance) 3.15 I2C BUS The C42QM module provides a set of hardware bidirectional serial buses with an I2C interface of 1.8V level. Table 19 I2C bus Definition Signal name Description Pin no. I2C_SCL...
  • Page 32 Cavli C42QM Hardware Manual 3.15 JTAG Interface Table 19 JTAG Interface Definition Signal name Description Pin no. JTAG_TRST_N JTAG Reset JTAG_SRST_N JTAG Reset for debug JTAG_TDI JTAG Data input JTAG_TMS JTAG Mode select input JTAG_TDO JTAG Data output JTAG_TCK JTAG Clock Input Timing diagram for JTAG Interface as follows.
  • Page 33 Cavli C42QM Hardware Manual Antenna interface 4.1 Chapter overview The C42QM module RF General Specifications contain the following sections: • RF Interface • GNSS reception performance • Working frequency • RF trace reference • RF connector size 4.2 RF interface...
  • Page 34 Cavli C42QM Hardware Manual 4.2.1 Main antenna interface In order to facilitate the antenna debugging, one need to add π-type matching circuit on the motherboard and take 50-ohm impedance line. The π-type matching components should be placed as close to the antenna as possible.
  • Page 35 〉40% 4.2.2 GNSS Antenna interface To use GNSS, you need to open the GPS with AT command AT+CGPS=1 (for details, please refer to C42QM AT command set manual) ✓ In order to facilitate the debugging of the antenna, it is necessary to add a π-type matching circuit to the main board, and to take a 50-ohm impedance line.
  • Page 36 Cavli C42QM Hardware Manual The recommended circuit is as follows: Figure 9 GNSS active antenna reference circuit NOTE An external LDO can be selected to supply power according to the active antenna • requirement. If the module is designed with a passive antenna, then the VDD circuit is not needed.
  • Page 37 Cavli C42QM Hardware Manual 4.3 RF trace reference ✓ The impedance of the RF signal line is determined by ✓ The dielectric constant of the material ✓ The trace width (W) ✓ The ground clearance (S), and The height (H) of the reference ground plane ✓...
  • Page 38 Cavli C42QM Hardware Manual Figure 12 Reference ground is the third layer PCB coplanar transmission line structure 4.4 RF connector size ✓ If the RF connector is used, the antenna connector must use a coaxial connector with a 50ohm characteristic impedance.
  • Page 39 Cavli C42QM Hardware Manual The RF connector plug for this connector is the U.FL-LP series from HRS. Figure 14 Antenna connector matching plug diagram Table 24 Main Parameters of the RF Connector Rated conditions Environmental conditions Frequency Range DC to 6 GHZ –40°C to +85°C...
  • Page 40 Cavli C42QM Hardware Manual 4.5 Working Frequency Table 25 RF Frequency Table Frequency band Uplink frequency Downstream frequency Mode LTE B1 1920 MHz–1980 MHz 2110 MHz–2170 MHz LTE B2 1850 MHz–1910 MHz 1930 MHz–1990 MHz LTE B3 1710 MHz–1785 MHz 1805 MHz–1880MHz...
  • Page 41 Cavli C42QM Hardware Manual LTE B73 450MHz-455MHz 460MHz-465MHz LTE B85 698MHz-716MHz 728MHz-746MHz www.cavliwireless.com...
  • Page 42 • Working storage temperature • Module IO level • Power supply • Power consumption characteristics • Electrostatic property • Reliability index 5.2 Working storage temperature Table 26 C42QM Module Working Storage Temperature Parameter Minimum value Maximum value -30°C 75°C Normal operating temperature -40°C...
  • Page 43 High level output VDD_EXT-0.45V VDD_EXT voltage Low level output 0.45V voltage 5.4 Power supply The C42QM module input power requirements are as follows: Table 28 C42QM Module Operating Voltage Parameter Minimum value Typical value Maximum value Input voltage 3.1V 3.6V 4.2V...
  • Page 44 Cavli C42QM Hardware Manual 5.5 Interface power requirements 5.5.1 UART Table 29 UART Serial Power Definition Voltage Level (V) Name Parameter Typical 1.35 UART1_CTS 0.45 UART1_RTS -0.3 1.35 UART1_TXD 0.45 UART1_RXD -0.3 1.35 UART2_TXD 0.45 UART2_RXD -0.3 1.35 UART3_TXD 0.45 UART3_RXD -0.3...
  • Page 45 Cavli C42QM Hardware Manual 0.65*VDD 3.05 USIM_VDD:3.0 -0.3 0.25*VDD USIM_DATA /1.8V VDD-0.45 3.05 0.45 VDD-0.45 3.05 USIM_VDD:3.0 USIM_CLK 0.45 /1.8V VDD-0.45 3.05 USIM_VDD:3.0 USIM_RST 0.45 /1.8V 5.5.3 ADC Table 31 ADC Power Definitions Level value (V) Remarks Signal name Parameter...
  • Page 46 5.5.5 I2C Table 33 I2C Power Definition Level value (V) Signal name Parameter Typical 1.35 I2C_SCL 0.45 1.35 0.45 I2C_SDA -0.3 5.6 Power consumption characteristics Table 34 Power Consumption of C42QM Module Current consumption Mode Type Unit Power Saving mode www.cavliwireless.com...
  • Page 47 Cavli C42QM Hardware Manual @LTE CAT M1 DRX=1.28s @ Paging = 24ms @LTE CAT NB2 DRX=1.28s @ Paging = 24ms Sleep State @ LTE Cat M1 Idle state e-I-DRX = 81.92 s @ PTW = 20.48 s, DRX = 2.56 s LTE Cat NB2 e-I-DRX = 81.92 s...
  • Page 48 Half Sky @ Real network, Active Antenna, DPO off 5.7 Electrostatic property There is no overvoltage protection inside the C42QM module. When the module is used, the ESD needs to be protected to ensure product quality. EMC design recommendations: ✓ The USB port needs to add TVS on VDD, D+, D- for protection, and the TVS parasitic...
  • Page 49 ✓ The ground plane around the module guarantees integrity and should not be split. ✓ ESD control of the surrounding environment and operators needs to be taken into account during module production, assembly and laboratory testing Table 35 C42QM ESD Features Test port Contact discharge...
  • Page 50 Cavli C42QM Hardware Manual Temperature: 85 Visual inspection: to be tested Working mode: High temperature work JESD22-A108-C Function check: to be tested normal work RF indicator check: to be tested Test duration: 24 h High temperature: Low temperature: – Visual inspection: to be tested...
  • Page 51 Cavli C42QM Hardware Manual to the horizontal RF indicator check: to be tested marble platform Working mode: no packaging, no Power on, do not boot Temperature: –40 Visual inspection: to be tested Working mode: no Low temperature packaging, no power,...
  • Page 52 Cavli C42QM Hardware Manual Structural and mechanical properties 6.1 Chapter overview • Module structural image • Module mechanical size 6.2 Module structural image Figure 16 Module Structural design www.cavliwireless.com...
  • Page 53 Cavli C42QM Hardware Manual 6.3 C42QM module mechanical size The figure below shows the bottom view size of the module: Figure 17 Front view and side view of the module (unit: mm) www.cavliwireless.com...
  • Page 54 Cavli C42QM Hardware Manual Figure 18 Bottom view of the module (unit: mm) www.cavliwireless.com...
  • Page 55 Cavli C42QM Hardware Manual Module recommended footprint: Figure 19 Recommended Footprint (Top View) (unit: mm) www.cavliwireless.com...
  • Page 56 Module packaging and storage • Production welding 7.2 Module packaging and storage The C42QM module is packaged in a tape reel with 500 pcs per reel, shipped as a tape reel sealed bag. Figure 20 C42QM Tape Measurements (in mm) www.cavliwireless.com...
  • Page 57 Cavli C42QM Hardware Manual Figure 21 Reel Dimensions of C42QM (in mm) The storage of the C42QM module is subject to the following conditions: ✓ The module has a moisture sensitivity rating of 3. ✓ When the ambient temperature is greater than 40 degrees Celsius and the air humidity is less than 90%, the module can be stored in a vacuum sealed bag for 12 months.
  • Page 58 Cavli C42QM Hardware Manual 7.3 Production welding The C42QM module is packaged in an anti-static tray. The SMT wire body needs to be equipped with a Tray module. It is recommended to use a reflow oven above 7 temperature zones.
  • Page 59 Cavli C42QM Hardware Manual Table 37 Reflow Process Parameter Table Warm zone Time Key parameter Preheating zone Heating rate: 1℃/ s ~ 3℃ / s (4℃~ 165℃) Temperature zone （t1～t2）： (160℃～210℃) 70s～120s （t3～t4）： Recirculation zone Peak temperature: 235℃~ 245 ℃...
  • Page 60 Cavli C42QM Hardware Manual Appendix 8.1 Chapter overview • Abbreviations • Safety and precautions 8.2 Abbreviations Table 38 Abbreviations Abbreviations Full name 3GPP Third Generation Partnership Project Access Point Adaptive Multi-rate Bit Error Rate China Compulsory Certification CDMA Code Division Multiple Access...
  • Page 61 Cavli C42QM Hardware Manual Electrostatic Discharge Federal Communications Commission GPRS General Packet Radio Service Global System for Mobile Communication HSDPA High-Speed Downlink Packet Access HSPA Enhanced High Speed Packet Access HSUPA High Speed Up-link Packet Access IMEI International Mobile Equipment Identity...
  • Page 62 Cavli C42QM Hardware Manual 8.3 Safety and precautions To use the wireless device safely, the terminal device informs the user of the relevant safety information: ✓ Interference: When the use of wireless devices is prohibited or the use of the device may cause interference and security of the electronic device, turn off the wireless device.