Avnet AES-ATT-M18QWG-SK-G Hardware User'S Manual Download Page 26 | Manualshive

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Page 26

3.4.5

Voltage Level Translation (1.8V / 3.3V)

SPI1 and UART2 interfaces plus two GPIOs (GPIO93 and GPIO95) from the WNC module are
level-shifted to 3.3V levels by Fairchild FXLA108BQX octal bi-directional level-translator device

In addition, the I2C peripheral interface bus from the WNC module is also level-shifted, using
an FXMA2102L8X 2-bit level-translator that is compatible for use with open-collector outputs

The level-shifted 3.3V signals are routed to the following connectors:



the Pmod-compatible 2x6 peripheral connector (J8) and



the Software Debug UART 3-pin header connector (J9)

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Summary of Contents for AES-ATT-M18QWG-SK-G

Page 1: ...2018 Avnet Inc AVNET Reach Further and Avnet logo are registered trademarks of Avnet Inc All other brands are the property of their respective owners LIT Global LTE IoT Starter Kit Hardware User Guide Version 1 4 ...

Page 2: ...4 5 cellular operating frequency bands amended 1 3 12 05 2017 Cellular operating frequency bands updated 1 4 02 10 2017 Kit Contents diagram added Block Diagram updated URL for kit purchase updated Light Sensor cautionary note added Force USB Boot details added Additional GPIOs and notes on usage added Detailed info added to certification section Modem mode use case removed Starter SIM details and...

Page 3: ...3 2x6 Pin Peripheral Connector 21 3 4 WNC Module Interfaces 22 3 4 1 SIM Interface 3FF Micro SIM Connector 22 3 4 2 USB Interface 23 3 4 3 UART1 Interface 25 3 4 4 UART2 Software Debug UART Interface 3 pin header 25 3 4 5 Voltage Level Translation 1 8V 3 3V 26 3 4 6 ADC Ambient Light Sensor JP2 27 3 4 7 3D Accelerometer Sensor LIS2DW12 28 3 4 8 Pushbutton Switches Reset User Boot 29 3 4 9 LED Stat...

Page 4: ...5 1 RoHS Compliance 47 5 2 Regulatory and Network Certifications 47 5 2 1 Certification Documents 47 5 2 2 CE RED EMC Testing 47 5 2 3 CE RED Radio Testing 47 5 2 4 Electrical Safety Certification 47 6 Shipping Handling and Storage 48 6 1 Shipping 48 6 2 Handling 48 6 3 Storage 48 7 Safety Recommendations 48 8 Ordering Information 49 8 1 LTE System Board Accessories 49 8 1 1 Expansion Connector Op...

Page 5: ...larization 17 Figure 9 Expansion Connector Board Stack Profile View 17 Figure 10 Expansion Connector Pin Numbering 20 Figure 11 2x6 Peripheral Connector Board Edge View 21 Figure 12 USB Interface Drivers Enumerate on Windows Host Computer 24 Figure 13 Board Detail Showing Light Sensor U3 27 Figure 14 CODEC Interface Using PCM or I2S 31 Figure 15 Sleep and Power Control of WNC Module 38 Figure 16 D...

Page 6: ...le 14 GPIO Signals Available on Expansion Connector 33 Table 15 GPIO Signals Assigned Local Functions 33 Table 16 Summary of LTE System Board Voltages 34 Table 17 Control and State Signals 37 Table 18 WAKEUP_IN and WAKEUP_OUT 37 Table 19 FPC Antenna Options from Pulse 39 Table 20 Absolute Maximum Ratings 42 Table 21 Recommended Electrical Operating Conditions 42 Table 22 Power Consumption 42 Table...

Page 7: ...ated Circuit JTAG Joint Test Action Group MEMs Micro Electro Mechanical Systems LTE Long Term Evolution N A Not Applicable N C Not Connected PIN Personal Identification Number Pmod Peripheral module Digilent Inc trademark SIM Subscriber Identity Module SoC System on Chip SoM System on Module SPI Serial Peripheral Interface UART Universal Asynchronous Receiver Transmitter UIM User Identity Module U...

Page 8: ...s ambient light temperature and accelerometer sensors onboard for out of box demonstration examples User application code runs directly on the M18QWG module leveraging the OpenEmbedded software framework for Linux application development A Software Development Kit SDK specific to the M18QWG module provides the necessary API calls to access hardware peripherals and system resources Application code...

Page 9: ...n the Kit LTE System Board p n AES ATT M18QWG M1 G Pulse FPC antennas LTE Primary Antenna GPS Antenna LTE Diversity Antenna Micro SIM card 100K data points on AT T M2X IoT platform services plus 200 SMS messages good for 60 days from activation Universal AC DC power supply with regional adaptors 5V 2 5A USB Cable for programming and debug Figure 1 Global LTE IoT Starter Kit Contents ...

Page 10: ...na assemblies 2G 3G 4G MIMO GNSS GPS Glonass Antenna interface to the LTE System board is via three space efficient U FL connectors 2 1 4 Expansion Interfaces for System Level Prototyping Two interfaces facilitate the adding of custom hardware to the LTE System board System expansion interface 1 8V I O is a 60 pin expansion connector Samtec ERF8 ERM8 series on the underside of the system board WNC...

Page 11: ...g GPS GLONASS 162 dBm tracking sensitivity Peripheral Interfaces HS USB 2 0 w PHY SGMII HSIC UARTs 4 wire and 2 wire SDC1 SPI1 I2C SPI2 USIM GPIOs ADC PCM I2S JTAG Power Consumption See datasheet utilizes power efficient ARM Cortex A7 technology Supply Voltage 4 5 V to 16 V DC Expansion Interfaces Pmod compatible connector 3 3V levels 2x6 pin 2 54 mm pitch SAMTEC ERM8 60pin connector 1 8V levels 2...

Page 12: ...Page 12 2 2 LTE IoT System Board Block Diagram Figure 2 LTE IoT System Board Block Diagram ...

Page 13: ...Page 13 2 3 Location of Key Components Figure 3 LTE IoT System Board Feature Identification Figure 4 Global LTE Cat 4 IoT System Board ...

Page 14: ... communications processors Host mode The WNC module will normally operate in host mode where one of the ARM Cortex A7 cores in the on module Qualcomm MDM device is reserved for use as the system processor for user applications The other three A7 cores are dedicated to the modem functions Modem mode WNC module operation in slave mode as a peripheral to an external processor interfaced to the WNC mo...

Page 15: ...Page 15 Figure 6 Use Cases for Avnet LTE IoT Boards ...

Page 16: ...e board s 60 pin Expansion Connector This is interface is implemented using a 2x30 pin 0 8mm pitch Samtec ERF8 series connector providing a robust space efficient and economical stacking solution that is especially attractive for cases where small overall physical size of the final product is vital Figure 7 3D View of Samtec ERF8 ERM8 Connector Pair ...

Page 17: ...14mm overall clearance between the boards Manuf Avnet P N Description Samtec ASP 197278 01 ERM8 series connector to match ERF8 socket 7 mm mated connector height Samtec ASP 197278 02 ERM8 series connector to match ERF8 socket 10 mm mated connector height Samtec ASP 197278 04 ERM8 series connector to match ERF8 socket 14 mm mated connector height Figure 8 Expansion Connector Polarization Figure 9 E...

Page 18: ...ta clock 120 SGMII_MDC 25 GND GND 27 SDC1_CLK SDC1 Clock 124 SDC1_CLK 29 SDC1_CMD SDC1 Command 123 SDC1_CMD 31 SPI1_MOSI SPI1 MOSI SDC1_DATA3 125 PD SPI1_MOSI SPI1_MOSI 33 GND GND 35 SPI1_MISO SPI1 MISO SDC1_DATA2 126 PD SPI1_MISO SPI1_MISO 37 SPI2_MOSI SPI2 MOSI 62 PD SPI2_MOSI 39 SPI2_MISO SPI2 MISO 63 PD SPI2_MISO 41 GND GND 43 SGMII_RX_M SGMII receive minus 59 SGMII_RX_M 45 SGMII_RX_P SGMII re...

Page 19: ...IO96 96 PD GPIO96 GPIO96 26 GPIO97 GPIO97 97 PD GPIO97 GPIO97 28 I2C_SCL I2C_SCL 61 PD I2C_SCL I2C_SCL 30 I2C_SDA I2C_SDA 60 PD I2C_SDA I2C_SDA 32 GPIO93 GPIO93 output only 93 NP GPIO93 GPIO93 34 GND GND 36 GND GND 38 SGMII_MDIO SGMII MDIO 121 SGMII_MDIO 40 SPI1_EN SPI1 Enable SDC1_DATA1 127 PD SPI1_EN SPI1_EN 42 SPI1_CLK SPI1 Clock SDC1_DATA0 128 PD SPI1_CLK SPI1_CLK 44 GND GND 46 GPIO06 GPIO06 1...

Page 20: ...Page 20 Figure 10 Expansion Connector Pin Numbering ...

Page 21: ...ual row I2C Pmod peripheral boards in many cases may not be fitted to this board as their duplicate SCL and SDA pins are not accommodated by the combo SPI plus I2C interface pinout assignments implemented on the LTE System board Table 4 2x6 Pmod Peripheral Connector Pinout Pmod Pin Function Signal Name Pmod Pin Function Signal Name 1 SPI_SS SPI1_EN_3V3 7 SPI_INT GPIO93_3V3 2 SPI_MOSI SPI1_MOSI_3V3...

Page 22: ... 1 8V 3 0V If SIM card is absent UIM_DETECT Low GND Table 5 SIM Card Interface Connections WNC Pin WNC Module Pin Name WNC I O Direction Avnet SOM Signal Name I O Voltage Levels Signal Description 133 UIM_VCC AO VCC_UIM_SIM 1 8V 3 0V SIM card power 134 UIM_DATA DI DO UIM_SIM_IO 1 8V 3 0V SIM card data 135 UIM_CLK DO UIM_SIM_CLK 1 8V 3 0V SIM card clock 136 UIM_RESET DO UIM_SIM_RST 1 8V 3 0V SIM ca...

Page 23: ...s quad core processor implements a USB Compound Device Qualcomm patented with virtual USB hub enabling multiple logical devices to enumerate over single physical USB interface When the LTE System board is first connected to the developer s computer it enumerates as this USB peripheral device implementing a total of 9 logical interfaces as shown in the Windows screenshot on the next page WNC Pin WN...

Page 24: ...aller2 sys winusb sys Android Debug Bridge 5 WNC M18Q2 HS USB Android Modem COM port modem qcserv sys modem sys Serial over USB AT Command interface 6 WNC M18Q2 HS USB NMEA COM port qcserv sys Serial over USB GPS interface 7 WNC M18Q2 HS USB Ethernet Adaptor Network adaptor qcusbwwan sys Ethernet over USB for HS data transfer 8 USB Mass Storage Device Removable disk usbstor sys Virtual removable d...

Page 25: ...es also communicate over the same USB interface 3 4 4 UART2 Software Debug UART Interface 3 pin header WNC UART2 is limited by the module firmware to performing the predefined system function of Software Debug UART The I O levels of this UART are level shifted with it s TX RX and GND signals made available on a 3 pin header J9 to facilitate external connection to a 3rd party USB to Serial debug ca...

Page 26: ...i directional level translator device In addition the I2C peripheral interface bus from the WNC module is also level shifted using an FXMA2102L8X 2 bit level translator that is compatible for use with open collector outputs The level shifted 3 3V signals are routed to the following connectors the Pmod compatible 2x6 peripheral connector J8 and the Software Debug UART 3 pin header connector J9 ...

Page 27: ...n the initial production boards a ADC input source selection via JP2 is not possible unless the R50 default resistor is removed b The ADC s input voltage limit could be exceeded if the Ambient Light Sensor is exposed to an excessively bright light source resulting in potential damage to the module To prevent this it is recommended that light levels must be restricted using some form of optical fil...

Page 28: ...nternal engine for motion and acceleration processing o Free fall wakeup o 6D 4D orientation o Tap and double tap recognition o Activity inactivity recognition o Portrait landscape detection The LIS2DW12 is used as a slave device address 0011001 b7 on the WNC module s I2C peripheral bus The SA0 input of the LIS2DW12 device is tied high but this signal is pinned out to test point SA0 to facilitate ...

Page 29: ...sion connector Table 11 Pushbutton Switch Functions Switch Name Switch Function How Activated SW1 RESET WNC module Reset input Press and hold for 3 seconds to Reset SW2 USER User defined trigger input User defined function forces a logic Low on GPIO98 SW3 BOOT Force USB Boot Press hold during reset forces reprogramming of firmware from USB Note This is an advanced function that requires use of WNC...

Page 30: ...w Table 12 LED Indicator Functions LED Name LED Function How Activated LED1 POWER 3V8 Power Good Indicator Illuminates if board is powered LED2 WWAN Network Connection Status Controlled by User software Indicates valid network connection LED3 USER User defined RGB output Controlled by User software User defined color and sequence ...

Page 31: ...vely serve as user defined GPIO see table below Access to these signals is via the 60 pin Expansion Connector Note Software support for the Digital Audio Interface is not currentltly included in the SDK Figure 14 CODEC Interface Using PCM or I2S Table 13 PCM I2S Digital Audio Interface Pins PCM mode I2S mode WNC GPIO Pin PCM_SYNC I2S_WS GPIO46 PCM_DIN I2S_DATA0 GPIO47 PCM_DOUT I2S_DATA1 GPIO48 PCM...

Page 32: ...ce Full duplex at 1 Gbps Half full duplex for 10 100 Mbps Supports VLAN tagging Supports IEEE 1588 Precision Time Protocol PTP Can be used connected to an external Ethernet PHY such as AR8033 or to an external switch Layout recommendations Differential impedance 100 Ω Space to other signals 3x line width Lane to lane space 3x line width Intra lane mismatch 0 7 mm ...

Page 33: ...Carrier board GPIO93 32 PMOD J8 pin 7 Note1 NP Level shifted on Pmod Interface GPIO94 20 PD GPIO95 18 PMOD J8 pin 8 Note1 PD Level shifted on Pmod Interface GPIO96 24 PD GPIO97 26 PD GPIO120 23 SGMII_MDC Note3 PD Check WNC firmware support GPIO123 27 SDC1_CMD Note3 PD Check WNC firmware support GPIO124 29 SDC1_CLK Note3 NP Check WNC firmware support Note1 Take care to avoid contention if GPIO shar...

Page 34: ...re voltages required The REG_EN regulator enable input is pulled high following power up via an RC delay circuit enables the 3V8 output can be pulled low from the 60 pin Expansion Connector to disable the 3V8 output Power Good status of the 3V8 output supply rail can be verified in two places LED1 illuminates green when the circuit is correctly powered and REG_EN is high PG test point this should ...

Page 35: ...Page 35 ...

Page 36: ...he LNA in the GNSS GPS antenna circuit Some discrete pull up resistors 3 5 4 VCC_UIM_SIM UIM_VCC 1 8V or 3 0V 150mA max Supplied by the UIM_VCC output pin of the WNC module This voltage is auto set on SIM negotiation and provides 1 8V or 3 3V power to The User Identity Module ie the removable SIM Card 3 5 5 3V3 3 3V 150 mA max Supplied by the onboard On Semi NCP114 LDO regulator This supplies 3 3V...

Page 37: ..._OUT For power sensitive applications this mechanism allows the modem and an external host to enter low power states whenever possible with the other side then waking it when required If the modem receives data while the host is in low power state then it must wake up the host If the host needs to transmit data while the modem is in low power state then the host must be able to wake up the modem T...

Page 38: ...re Figure 15 Sleep and Power Control of WNC Module POWER_ON is the power control input to the WNC module This is made available on a test point PWR but is otherwise unused in this design Not available on the 60 pin Expansion Connector Note In the event the User application also needs control of the POWER_ON input this requires rework of the LTE System board as R11 will need to be removed WWAN_STAT...

Page 39: ...ions from Pulse Manuf Part Number Description Antenna Circuits Pulse W6113B0100 FPC combo 3 in 1 antenna LTE GPS LTE Pulse W3906B0100 W3907B0100 FPC dual antenna FPC single antenna LTE GPS LTE Pulse W3907B0100 W3908B0100 2x FPC single antennas 1x FPC GPS antenna LTE LTE GPS Features of these Pulse FPC antennas include the following 2G 3G 4G MIMO Global LTE bands B1 B23 B25 B29 B33 B42 N America Eu...

Page 40: ...up of the following circuitry SAW filters 1 and 2 Murata SAFFB1G56KB0F0AR15 Low Noise Amplifier Infineon BGA824N6 The LNA device is enabled under firmware control by GPIO05 on the WNC module Figure 17 GPS Antenna Circuit Diagram The GPS antenna section of the LTE System board schematic is detailed on the next page ...

Page 41: ...Page 41 ...

Page 42: ... consumption from WNC M18QWG specifications Table 22 Power Consumption Parameter Test Condition Typ Unit Airplane mode Module only no other device 0 86 mA LTE Standby mode lowest power consumption Band 8 DRX 2 56 sec BW 10MHz 1 01 mA LTE Standby mode highest power consumption Band 2 DRX 2 56 sec BW 10MHz 1 22 mA LTE Working mode lowest power consumption Band 40 BW 20MHz PTX 23dbm DL 145Mbps 400 mA...

Page 43: ...cteristics Table 23 TX Power and RX Sensitivity Parameter Typical Unit TX Power LTE 23 0 dBm TX Power WCDMA 23 5 dBm TX Power GSM 32 5 29 5 dBm RX Sensitivity LTE 99 to 102 dBm RX Sensitivity WCDMA 108 5 to 110 dBm RX Sensitivity GSM 107 to 109 dBm 4 5 Networking and Carrier Table 24 Networking and Carrier Characteristics Europe Operation Parameter Characteristics Notes Carrier and Technology 4G L...

Page 44: ... Acquire First with Signal level 146 dBm Tracking sensitivity GPS Detect an in view satellite 50 of the time 162 dBm 4 7 Environmental Table 26 Environmental Characteristics Parameter Min Typ Max Unit Humidity Range Storage Temperature 40 85 ºC Operating Temperature LTE System Board Functional WNC Module Functional WNC Module 3GPP Compliant 25 25 20 60 75 60 ºC Non condensing relative humidity The...

Page 45: ...Page 45 4 8 Mechanical Table 27 Mechanical Characteristics Parameter Characteristics LTE System board PCBA dimensions 29 5 mm 30 mm 10 mm typ Figure 18 Mechanical Details 1 of 2 ...

Page 46: ...Page 46 ...

Page 47: ...dditional EMC testing will be required when this module is a fitted to an additional PCB assembly and or b the external power supply is changed 5 2 3 CE RED Radio Testing CE certification testing of this kit was conducted with the LTE SOM board fitted with the Pulse antennas tabled below Use of different antennas will require additional certification testing Table 28 Certified Pulse Antennas Manuf...

Page 48: ...ty of the user to comply with their country s regulations and environmental regulations Do not disassemble the product any mark of tampering will compromise the warranty s validity It is recommended the instructions in this hardware user guide be followed for correct wiring of the product The product must be supplied with a reliable voltage source and wiring must conform to the security and fire p...

Page 49: ... Samtec ASP 197278 02 ERM8 series matching connector 10 mm mated connector height 1 35 Samtec ASP 197278 04 ERM8 series matching connector 14 mm mated connector height 1 90 8 1 2 Pulse FPC Antenna Options Pulse has providioned three different implementation options using FPC type antennas for maximum flexibility in achieving specific end product form factors Table 31 FPC Antenna Options from Pulse...

Page 50: ...Page 50 Figure 19 Pulse FPC Antenna Options ...

Page 51: ... kits avnet com Europe Sales Enquiries ebvchips ebv com 10 Technical Support Technical support for the Global LTE IoT Kit is available via online support forum pages These are located on same website as the product documentation at http cloudconnectkits org forum 11 Disclaimer Avnet assumes no liability for modifications that the owner chooses to make to their LTE IoT Starter Kit ...

Page 52: ...heral interfaces of LTE System Module via 60 pin Samtec ERM8 series connector 10mm mated connector height 10mm standoffs required for mounting of LTE Board Level shifting of the WNC module signals to from 1 8V 3 3V levels Dual sockets for two MikroE Click peripheral modules available from Avnet Flexible system prototyping via a choice of over 425 Click peripheral modules External control of LTE Sy...

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