SARA-G3 and SARA-U2 series GSM/GPRS and GSM/EGPRS/HSPA Cellular Modules System Integration Manual Abstract This document describes the features and the system integration of the SARA-G3 series GSM/GPRS cellular modules and the SARA-U2 GSM/EGPRS/HSPA cellular modules.
SARA-G3 and SARA-U2 series - System Integration Manual Document Information Title SARA-G3 and SARA-U2 series Subtitle GSM/GPRS and GSM/EGPRS/HSPA Cellular Modules Document type System Integration Manual Document number UBX-13000995 Revision, date R18 Document status Advance Information 17-Jun-2016 Document status explanation Objective Specification Document contains target values. Revised and supplementary data will be published later.
SARA-G3 and SARA-U2 series - System Integration Manual Preface u-blox Technical Documentation As part of our commitment to customer support, u-blox maintains an extensive volume of technical documentation for our products. In addition to our product-specific technical data sheets, the following manuals are available to assist u-blox customers in product design and development. x AT Commands Manual: This document provides the description of the AT commands supported by the u-blox cellular modules.
SARA-G3 and SARA-U2 series - System Integration Manual Contents Preface ................................................................................................................................ 3 Contents.............................................................................................................................. 4 1 System description ....................................................................................................... 8 1.1 1.2 Overview .........................
SARA-G3 and SARA-U2 series - System Integration Manual 2 1.13.4 1.13.5 TCP/IP and UDP/IP ....................................................................................................................... 77 FTP .............................................................................................................................................. 77 1.13.6 HTTP .....................................................................................................................................
SARA-G3 and SARA-U2 series - System Integration Manual 2.12 2.13 Thermal guidelines ........................................................................................................................ 155 ESD guidelines .............................................................................................................................. 157 2.13.1 ESD immunity test overview ...................................................................................................... 157 2.13.2 2.
SARA-G3 and SARA-U2 series - System Integration Manual 4.6 4.7 Mexican IFT certification ................................................................................................................... 178 Chinese CCC mark ........................................................................................................................... 178 4.8 Korean KCC certification .................................................................................................................. 179 4.
SARA-G3 and SARA-U2 series - System Integration Manual 1 System description 1.
SARA-G3 and SARA-U2 series - System Integration Manual 3G UMTS/HSDPA/HSUPA characteristics 2G GSM/GPRS/EDGE characteristics Class A User Equipment3 Class B Mobile Station4 Protocol stack x SARA-U2 series: 3GPP Release 7 Protocol stack x SARA-U2 series: 3GPP Release 7 x SARA-G3 series: 3GPP Release 99 Band support x SARA-U201: Band support x SARA-U201, SARA-G310, SARA-G350: Band 19 (800 MHz) GSM 850 MHz Band 5 (850 MHz) E-GSM 900 MHz Band 8 (900 MHz) DCS 1800 MHz Band 2 (1900 MHz) PCS 1900 MH
SARA-G3 and SARA-U2 series - System Integration Manual Table 2 reports a summary of cellular radio access technologies characteristics of SARA-G3 and SARA-U2 series modules. 1.2 Architecture Figure 1 summarizes the architecture of SARA-G300 and SARA-G310 modules, while Figure 2 summarizes the architecture of SARA-G340 and SARA-G350 modules, describing the internal blocks of the modules, consisting of the RF, Baseband and Power Management main sections, and the available interfaces.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 3 shows the architecture of SARA-U201 modules, Figure 4 summarizes the architecture of SARA-U260 and SARA-U270 modules, while Figure 5 summarizes the architecture of SARA-U280 modules, describing the internal blocks of the modules, consisting of the RF, Baseband and Power Management main sections, and the available interfaces.
SARA-G3 and SARA-U2 series - System Integration Manual 26 MHz 32.768 kHz Power-On LNA ANT Duplexer Reset Switch Filter 3G PA RF Transceiver SIM SIM card detection Cellular BaseBand Processor Memory VCC (Supply) V_BCKP (RTC) V_INT (I/O) UART USB DDC (I2C) Digital audio (I2S) GPIO Power Management Antenna detection Figure 5: SARA-U280 modules block diagram 1.2.
SARA-G3 and SARA-U2 series - System Integration Manual Audio analog front-end The SARA-U201 module integrates only a baseband memory SiP including a NAND flash non-volatile memory and a RAM volatile memory x 12 Memory system in a multi-chip package integrating two devices : NOR flash non-volatile memory RAM volatile memory x Voltage regulators to derive all the system supply voltages from the module supply VCC x Circuit for the RTC clock reference in low power idle-mode: SARA-G340, SARA-G350 and SARA
SARA-G3 and SARA-U2 series - System Integration Manual 1.3 Pin-out Table 3 lists the pin-out of the SARA-G3 and SARA-U2 series modules, with pins grouped by function. Function Pin Name Module Pin No Power VCC All GND System Antenna Description Remarks 51, 52, 53 I Module supply input VCC pins are internally connected each other, except for SARA-G3 modules product versions ‘02’ onwards.
SARA-G3 and SARA-U2 series - System Integration Manual Function Pin Name Module Pin No I/O Description Remarks SIM VSIM All 41 O SIM supply output VSIM = 1.80 V typ. or 2.85 V typ. automatically generated according to the connected SIM type. See section 1.8 for functional description. See section 2.5 for external circuit design-in. SIM_IO All 39 I/O SIM data Data input/output for 1.8 V / 3 V SIM Internal 4.7 k: pull-up to VSIM. See section 1.8 for functional description. See section 2.
SARA-G3 and SARA-U2 series - System Integration Manual Function Pin Name Module Pin No I/O Description Remarks Auxiliary UART RXD_AUX SARA-G3 28 O Auxiliary UART data output 1.8 V output, Circuit 104 (RXD) in ITU-T V.24, for FW upgrade via EasyFlash tool and diagnostic. AT command mode and GNSS tunneling additionally supported by product versions “02” onwards. Access by external test-point is recommended. See section 1.9.2 for functional description. See section 2.6.
SARA-G3 and SARA-U2 series - System Integration Manual Function Pin Name Module Pin No I/O Description Remarks Analog Audio MIC_BIAS SARA-G340 SARA-G350 46 O Microphone supply output Supply output (2.2 V typ) for external microphone. See section 1.10.1 for functional description. See section 2.7.1 for external circuit design-in. MIC_GND SARA-G340 SARA-G350 47 I Microphone analog reference Local ground for the external microphone (reference for the analog audio uplink path).
SARA-G3 and SARA-U2 series - System Integration Manual Function Pin Name Module Pin No I/O Description Remarks GPIO GPIO1 SARA-G340 SARA-G350 SARA-U2 16 I/O GPIO 1.8 V GPIO by default configured as pin disabled. See section 1.11 for functional description. See section 2.8 for external circuit design-in. GPIO2 SARA-G340 SARA-G350 SARA-U2 23 I/O GPIO 1.8 V GPIO by default configured to provide the custom GNSS supply enable function. See section 1.11 for functional description.
SARA-G3 and SARA-U2 series - System Integration Manual 1.4 Operating modes SARA-G3 modules have several operating modes. The operating modes defined in Table 4 and described in detail in Table 5 provide general guidelines for operation. General Status Operating Mode Definition Power-down Not-Powered Mode Power-Off Mode VCC supply not present or below operating range: module is switched off. VCC supply within operating range and module is switched off.
SARA-G3 and SARA-U2 series - System Integration Manual Operating Mode Description Transition between operating modes Active The module is ready to communicate with an external device by means of the application interfaces unless power saving configuration is enabled by the AT+UPSV command (see sections 1.5.1.4, 1.9.1.4 and to the u-blox AT Commands Manual [3]). When the module is switched on by an appropriate power-on event (see 2.3.1), the module enters active-mode from not-powered or power-off mode.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5 Supply interfaces 1.5.1 Module supply input (VCC) The modules must be supplied via the three VCC pins that represent the module power supply input.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.1.1 VCC supply requirements Table 6 summarizes the requirements for the VCC module supply. See section 2.2.1 for all the suggestions to properly design a VCC supply circuit compliant to the requirements listed in Table 6. VCC supply circuit affects the RF compliance of the device integrating SARA-G3 and SARA-U2 series modules with applicable required certification schemes as well as antenna circuit design.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.1.2 VCC current consumption in 2G connected-mode When a GSM call is established, the VCC consumption is determined by the current consumption profile typical of the GSM transmitting and receiving bursts. The current consumption peak during a transmission slot is strictly dependent on the transmitted power, which is regulated by the network.
SARA-G3 and SARA-U2 series - System Integration Manual When a GPRS connection is established, more than one slot can be used to transmit and/or more than one slot can be used to receive. The transmitted power depends on network conditions, which set the peak current consumption, but following the GPRS specifications the maximum transmitted RF power is reduced if more than one slot is used to transmit, so the maximum peak of current is not as high as can be in case of a GSM call.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.1.3 VCC current consumption in 3G connected mode During a 3G connection, the SARA-U2 modules can transmit and receive continuously due to the Frequency Division Duplex (FDD) mode of operation with the Wideband Code Division Multiple Access (WCDMA). The current consumption depends again on output RF power, which is always regulated by network commands.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.1.4 VCC current consumption in cyclic idle/active-mode (power saving enabled) The power saving configuration is by default disabled, but it can be enabled using the appropriate AT command (see u-blox AT Commands Manual [3], AT+UPSV command). When power saving is enabled, the module automatically enters low power idle-mode whenever possible, reducing current consumption.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 15 roughly describes the current consumption profile of SARA-G300 and SARA-G310 modules when the EXT32K input pin is fed by the 32K_OUT output pin provided by these modules, when power saving is enabled. The module is registered with the network, automatically enters the low power idle-mode and periodically wakes up to active-mode to monitor the paging channel for paging block reception.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.1.5 VCC current consumption in fixed active-mode (power saving disabled) Power saving configuration is by default disabled, or it can be disabled using the appropriate AT command (see u-blox AT Commands Manual [3], AT+UPSV command). When power saving is disabled, the module does not automatically enter idle-mode whenever possible: the module remains in active-mode.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 17 roughly describes the current consumption profile of the SARA-G300 and SARA-G310 modules (when their EXT32K input is not fed by a signal, i.e.
SARA-G3 and SARA-U2 series - System Integration Manual 1.5.2 RTC supply input/output (V_BCKP) The V_BCKP pin of SARA-G3 and SARA-U2 series modules connects the supply for the Real Time Clock (RTC) and Power-On internal logic. This supply domain is internally generated by a linear LDO regulator integrated in the Power Management Unit, as described in Figure 18.
SARA-G3 and SARA-U2 series - System Integration Manual The RTC has very low power consumption, but is highly temperature dependent. For example at 25 °C, with the V_BCKP voltage equal to the typical output value, the current consumption is approximately 2 μA (see the “Input characteristics of Supply/Power pins” table in the SARA-G3 series Data Sheet [1] and SARA-U2 series Data Sheet [2] for the detailed specification), whereas at 70 °C and an equal voltage the current consumption increases to 5-10 μA.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6 System function interfaces 1.6.1 Module power-on 1.6.1.1 Switch-on events Table 8 summarizes the possible switch-on events for the SARA-G3 and SARA-U2 series modules. SARA-G3 SARA-U2 From Not-Powered Mode Applying valid VCC supply voltage (i.e. VCC rise edge), ramping from 2.5 V to 3.2 V within 4 ms Applying valid VCC supply voltage (i.e. VCC rise edge), ramping from 2.5 V to 3.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.1.2 Switch-on sequence from not-powered mode Figure 21 shows the modules power-on sequence from the not-powered mode, describing the following phases: x The external supply is applied to the VCC module supply inputs, representing the start-up event.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.1.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.2 Module power-off 1.6.2.1 Switch-off events The SARA-G3 and SARA-U2 series modules can be properly switched off by: x AT+CPWROFF command (more details in u-blox AT Commands Manual [3]).
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.2.2 Switch-off sequence by AT+CPWROFF Figure 23 describes the SARA-G3 and SARA-U2 series modules power-off sequence, properly started sending the AT+CPWROFF command, allowing storage of current parameter settings in the module’s non-volatile memory and a proper network detach, with the following phases: x When the +CPWROFF AT command is sent, the module starts the switch-off routine.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.3 Module reset SARA-G3 and SARA-U2 series modules can be properly reset (rebooted) by: x AT+CFUN command (see the u-blox AT Commands Manual [3] for more details). This command causes an “internal” or “software” reset of the module, which is an asynchronous reset of the module baseband processor.
SARA-G3 and SARA-U2 series - System Integration Manual 1.6.4 External 32 kHz signal input (EXT32K) The EXT32K pin is not available on SARA-G340, SARA-G350 and SARA-U2 series modules. The EXT32K pin of SARA-G300 / SARA-G310 modules is an input pin that must be fed by a proper 32 kHz signal to make available the reference clock for the Real Time Clock (RTC) timing, used by the module processor when in the low power idle-mode.
SARA-G3 and SARA-U2 series - System Integration Manual 1.7 Antenna interface 1.7.1 Antenna RF interface (ANT) The ANT pin of SARA-G3 and SARA-U2 series modules represents the RF input/output for 2G or 3G cellular RF signals reception and transmission. The ANT pin has a nominal characteristic impedance of 50 : and must be connected to the antenna through a 50 : transmission line for proper RF signals reception and transmission. 1.7.1.
SARA-G3 and SARA-U2 series - System Integration Manual 1.7.2 Antenna detection interface (ANT_DET) Antenna detection interface (ANT_DET) is not supported by SARA-G300 and SARA-G310 modules. The antenna detection is based on ADC measurement. The ANT_DET pin is an Analog to Digital Converter (ADC) provided to sense the antenna presence. The antenna detection function provided by ANT_DET pin is an optional feature that can be implemented if the application requires it.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9 Serial interfaces SARA-G3 and SARA-U2 series modules provide the following serial communication interfaces: x x UART interface: 9-wire unbalanced 1.8 V asynchronous serial interface supporting (see 1.9.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9.1 Asynchronous serial interface (UART) 1.9.1.1 UART features The UART interface is a 9-wire 1.8 V unbalanced asynchronous serial interface available on all the SARA-G3 and SARA-U2 series modules, supporting: x AT command mode x Data mode and Online command mode x Multiplexer protocol functionality (see 1.9.1.5) x FW upgrades by means of the FOAT feature (see 1.13.
SARA-G3 and SARA-U2 series - System Integration Manual The following baud rates can be configured by AT command (see u-blox AT Commands Manual [3], +IPR): x 1200 b/s x 2400 b/s x 4800 b/s x 9600 b/s x 19200 b/s x 38400 b/s x 57600 b/s x 115200 b/s, default value when the autobauding or the one-shot autobauding are disabled x 230400 b/s x 460800 b/s x 921600 b/s 1200 b/s, 230400 b/s, 460800 b/s and 921600 b/s baud rates are not supported by SARA-G3 modules.
SARA-G3 and SARA-U2 series - System Integration Manual The module firmware can be updated over the UART interface by means of: x the Firmware upgrade Over AT (FOAT) feature, on all the SARA-G3 and SARA-U2 series modules x the u-blox EasyFlash tool, on SARA-U2 series modules only For more details on FW upgrade procedures see section 1.13 and Firmware update application note [28]. 1.9.1.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9.1.3 UART signal behavior At the module switch-on, before the UART interface initialization (as described in the power-on sequence 25 reported in Figure 21 or Figure 22), each pin is first tri-stated and then is set to its related internal reset state . At the end of the boot sequence, the UART interface is initialized, the module is by default in active-mode, and the UART interface is enabled as AT commands interface.
SARA-G3 and SARA-U2 series - System Integration Manual RTS signal behavior The hardware flow control input (RTS line) is set by default to the OFF state (high level) at UART initialization. The module then holds the RTS line in the OFF state if the line is not activated by the DTE: an active pull-up is enabled inside the module on the RTS input. If the HW flow control is enabled, as it is by default, the module monitors the RTS line to detect permission from the DTE to send data to the DTE itself.
SARA-G3 and SARA-U2 series - System Integration Manual DCD signal behavior If AT&C1 is set, as it is by default, the DCD module output line is set by default to the OFF state (high level) at UART initialization. The module then sets the DCD line according to the carrier detect status: ON if the carrier is detected, OFF otherwise. For voice calls, DCD is set to the ON state when the call is established.
SARA-G3 and SARA-U2 series - System Integration Manual RI signal behavior The RI module output line is set by default to the OFF state (high level) at UART initialization. Then, during an incoming call, the RI line is switched from the OFF state to the ON state with a 4:1 duty cycle and a 5 s period (ON for 1 s, OFF for 4 s, see Figure 26), until the DTE attached to the module sends the ATA string and the module accepts the incoming data call.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9.1.4 UART and power-saving The power saving configuration is controlled by the AT+UPSV command (for the complete description, see u-blox AT Commands Manual [3]). When power saving is enabled, the module automatically enters low power idle-mode whenever possible, and otherwise the active-mode is maintained by the module (see section 1.4 for definition and description of module operating modes referred to in this section).
SARA-G3 and SARA-U2 series - System Integration Manual AT+UPSV HW flow control RTS line DTR line Communication during idle-mode and wake up 3 Enabled (AT&K3) ON ON 3 Enabled (AT&K3) ON OFF Data sent by the DTE is correctly received by the module. Data sent by the module is correctly received by the DTE. Data sent by the DTE is lost by the module. Data sent by the module is correctly received by the DTE.
SARA-G3 and SARA-U2 series - System Integration Manual The time period between two paging receptions is defined by the current base station (i.e. by the network): x If the module is registered with a 2G network, the paging reception period can vary from ~0.47 s (DRX = 2, i.e. 2 x 51 2G-frames) up to ~2.12 s (DRX = 9, i.e. 9 x 51 2G-frames) x If the module is registered with a 3G network, the paging reception period can vary from 0.64 s (DRX = 6, 6 9 i.e. 2 3G-frames) up to 5.12 s (DRX = 9, i.e.
SARA-G3 and SARA-U2 series - System Integration Manual AT+UPSV=2: power saving enabled and controlled by the RTS line This configuration can only be enabled with the module hardware flow control disabled by AT&K0 command. The UART interface is immediately disabled after the DTE sets the RTS line to OFF.
SARA-G3 and SARA-U2 series - System Integration Manual Wake up via data reception The UART wake up via data reception consists of a special configuration of the module TXD input line that causes the system wake-up when a low-to-high transition occurs on the TXD input line. In particular, the UART is enabled and the module switches from the low power idle-mode to active-mode within ~20 ms from the first character received: this is the system “wake up time”.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 30 shows the case where in addition to the wake-up character further (valid) characters are sent. The wake up character wakes-up the module UART. The other characters must be sent after the “wake up time” of ~20 ms. If this condition is satisfied, the module (DCE) recognizes characters. The module will disable the UART after 2000 GSM frames from the latest data reception. UART DCE UART is enabled for 2000 GSM frames (~9.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9.1.5 Multiplexer protocol (3GPP TS 27.010) SARA-G3 and SARA-U2 series modules have a software layer with MUX functionality, the 3GPP TS 27.010 2 Multiplexer Protocol [13], available on the UART physical link. The auxiliary UART, the USB and the DDC (I C) serial interfaces do not support the multiplexer protocol.
SARA-G3 and SARA-U2 series - System Integration Manual 1.9.2 Auxiliary asynchronous serial interface (AUX UART) The auxiliary UART interface is not available on SARA-U2 series modules. The auxiliary UART interface is a 3-wire 1.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-G3 modules’ auxiliary UART interface can be configured in AT command mode by means of the AT+USIO command (for more details see Table 12 and the u-blox AT Commands Manual [3]), so that: x the cellular module waits for AT command instructions and interprets all the characters received over the auxiliary UART interface as commands to execute x the auxiliary UART interface provides RS-232 functionality conforming to the ITU-T V.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-G3 modules’ auxiliary UART interface does not support the multiplexer protocol, but the interface can be configured in GNSS tunneling mode by means of the AT+USIO command (for more details see Table 12 and the u-blox AT Commands Manual [3]), so that: x raw data flow to and from a u-blox GNSS receiver connected to the cellular module via I C interface is available (for more details see the u-blox AT Commands Manual [3], +UGPRF AT command) x None
SARA-G3 and SARA-U2 series - System Integration Manual Each USB profile of SARA-U2 module identifies itself by its VID (Vendor ID) and PID (Product ID) combination, included in the USB device descriptor according to the USB 2.0 specifications [14]. If the USB interface of a SARA-U2 module is connected to the host before the module is switched on, or if the module is reset with the USB interface connected to the host, then the VID and PID are automatically updated at runtime, after the USB detection.
SARA-G3 and SARA-U2 series - System Integration Manual AT+UUSBCONF PID Available USB functions 0 0x1102 o 2 0x1104 o o Remarks 7 CDC-ACM modem COM ports: o USB1: AT and data o USB2: AT and data o USB3: AT and data o USB4: GNSS tunneling o USB5: Primary Log (diagnostic purpose) o USB6: Secondary Log (diagnostic purpose) o USB7: SAP (SIM Access Profile) 1 CDC-ECM for Ethernet-over-USB: 4 CDC-ACM modem COM ports: o USB1: AT and data o USB2: GNSS tunneling o USB3: Primary Log (diagnostic purpose) o U
SARA-G3 and SARA-U2 series - System Integration Manual The module firmware can be updated over the USB interface by means of: x the Firmware upgrade Over AT (FOAT) feature x the u-blox EasyFlash tool For more details on FW upgrade procedures see section 1.13 and Firmware update application note [28]. The USB drivers are available for the following operating system platforms: x Windows XP x Windows Vista x Windows 7 x Windows 8 x Windows 8.1 x Windows 10 x Windows CE 5.
SARA-G3 and SARA-U2 series - System Integration Manual 2 1.9.4 DDC (I C) interface 2 SARA-G300 and SARA-G310 modules do not support DDC (I C) interface. 2 An I C bus compatible Display Data Channel (DDC) interface for communication with u-blox GNSS receivers is available on SDA and SCL pins of SARA-G340, SARA-G350 and SARA-U2 modules. Only this interface provides the communication between the u-blox cellular module and u-blox positioning chips and modules.
SARA-G3 and SARA-U2 series - System Integration Manual the position in a shorter time with higher accuracy.
SARA-G3 and SARA-U2 series - System Integration Manual 1.10 Audio interface SARA-G300 and SARA-G310 modules do not support audio interface.
SARA-G3 and SARA-U2 series - System Integration Manual 1.10.1.2 Downlink path SARA-G340 / SARA-G350 pins related to the analog audio downlink path are: x SPK_P / SPK_N: Differential analog audio signal output (positive/negative). These two pins are directly connected internally to the differential output of a low power audio amplifier, for which the input is connected internally to the digital processing system by to an integrated digital-to-analog converter.
SARA-G3 and SARA-U2 series - System Integration Manual 1.10.2 Digital audio interface SARA-G340, SARA-G350 and SARA-U2 modules provide one 1.8 V bidirectional 4-wire (I2S_TXD data output, 2 I2S_RXD data input, I2S_CLK clock, I2S_WA world alignment) I S digital audio interface that can be used for digital audio communication with external digital audio devices as an audio codec.
SARA-G3 and SARA-U2 series - System Integration Manual 2 1.10.2.
SARA-G3 and SARA-U2 series - System Integration Manual 1.10.3 Voice-band processing system 1.10.3.1 SARA-G340 / SARA-G350 modules audio processing The voice-band processing on the SARA-G340 / SARA-G350 modules is implemented in the DSP core inside the baseband chipset. The analog audio front-end of the chipset is connected to the digital system through 16 bit ADC converters in the uplink path, and through 16 bit DAC converters in the downlink path.
SARA-G3 and SARA-U2 series - System Integration Manual The circular buffer is a 3000 word buffer to store and mix the voice-band samples from Midi synthesizer. The buffer has a circular structure, so that when the write pointer reaches the end of the buffer, it is wrapped to the begin address of the buffer.
SARA-G3 and SARA-U2 series - System Integration Manual Uplink Digital Gain I2S_RXD I2Sx RX UBF 1/5 Switch UBF 2/6 Tone Generator UBF 3/7 UBF 4/8 Handsfree Sidetone Scal_Rec Digital Gain I2S_TXD I2Sx TX Switch To Radio TX Speech level DBF 4/8 DBF 3/7 DBF 2/6 DBF 1/5 From Radio RX Mix_Afe Legend: UBF= Uplink Biquad Filter DBF = Downlink Biquad Filter PCM Player Figure 33: SARA-U2 modules audio processing system block diagram SARA-U2 modules audio signal processing algorithms are: x Spee
SARA-G3 and SARA-U2 series - System Integration Manual 1.11 General Purpose Input/Output (GPIO) SARA-G300 and SARA-G310 modules do not support GPIOs.
SARA-G3 and SARA-U2 series - System Integration Manual x GNSS supply enable: The GPIO2 is by default configured by AT+UGPIOC command to enable or disable the supply of the u-blox GNSS receiver connected to the cellular module. The GPIO1, GPIO3, GPIO4 pins and, on SARA-U2 series only, also the SIM_DET pin, can be configured to provide the “GNSS supply enable” function, alternatively to the default GPIO2 pin, setting the parameter of AT+UGPIOC command to 3.
SARA-G3 and SARA-U2 series - System Integration Manual x Module status indication: The GPIO1 pin of SARA-U2 modules can be configured to indicate module status (power-off mode, i.e. module switched off, versus idle, active or connected mode, i.e. module switched on), by properly setting the parameter of AT+UGPIOC command to 10. No GPIO pin is by default configured to provide the “Module status indication”.
SARA-G3 and SARA-U2 series - System Integration Manual x General purpose input: All the GPIOs can be configured as input to sense high or low digital level through AT+UGPIOR command, setting the parameter of AT+UGPIOC command to 1. The “General purpose input” mode can be provided on more than one pin at a time. No GPIO pin is by default configured as “General purpose input”.
SARA-G3 and SARA-U2 series - System Integration Manual Pin Module 23 Name Description Remarks SARA-G340 GPIO2 SARA-G350 SARA-U2 series GPIO 24 SARA-G340 GPIO3 SARA-G350 SARA-U2 series GPIO 25 SARA-G340 GPIO4 SARA-G350 SARA-U2 series GPIO 42 SARA-G340 SIM_DET SARA-G350 SARA-U2 series SIM_DET SIM detection 34 SARA-U2 series I2S_WA GPIO By default, the pin is configured to provide GNSS Supply Enable function.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13 System features 1.13.1 Network indication Not supported by SARA-G300 and SARA-G310 modules. The GPIO1, or the GPIO2, GPIO3, GPIO4 and, on SARA-U2 series only, the SIM_DET, alternatively from their default settings, can be configured to indicate network status (i.e. no service, registered home network, registered visitor network, voice or data call enabled), by means of the AT+UGPIOC command. For the detailed description, see section 1.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.4 TCP/IP and UDP/IP Not supported by SARA-G300 and SARA-G310 modules. Via the AT commands it is possible to access the embedded TCP/IP and UDP/IP stack functionalities over the Packet Switched data connection. For more details about AT commands see u-blox AT Commands Manual [3]. Direct Link mode for TCP and UDP sockets is supported.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.8 SSL/TLS Not supported by SARA-G300 and SARA-G310 modules. Not supported by SARA-G340-00S and SARA-G350-00S / SARA-G350-00X modules. The modules support the Secure Sockets Layer (SSL) / Transport Layer Security (TLS) with certificate key sizes up to 4096 bits to provide security over the FTP and HTTP protocols.
SARA-G3 and SARA-U2 series - System Integration Manual Algorithm SARA-U series SARA-G series RC4 DES NO32 YES NO33 YES 3DES AES128 YES34 YES YES YES AES256 YES34 YES Algorithm SARA-U series SARA-G series MD5 NO32 NO33 SHA/SHA1 SHA256 YES YES34 YES YES SHA384 YES34 YES Table 18: Encryption Table 19: Message digest Description Registry value SARA-U series SARA-G series TLS_RSA_WITH_AES_128_CBC_SHA TLS_RSA_WITH_AES_128_CBC_SHA256 0x00,0x2F 0x00,0x3C YES34 YES34 YES YES TLS_RS
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.10 Smart temperature management Not supported by SARA-G300 and SARA-G310 modules. Cellular modules – independently from the specific model – always have a well-defined operating temperature range. This range should be respected to guarantee full device functionality and long life span. Nevertheless there are environmental conditions that can affect operating temperature, e.g.
SARA-G3 and SARA-U2 series - System Integration Manual The user can decide at anytime to enable/disable the Smart Temperature Supervisor feature. If the feature is disabled there is no embedded protection against disallowed temperature conditions. Figure 35 shows the flow diagram implemented in the SARA-U2 series, SARA-G340 and SARA-G350 modules for the Smart Temperature Supervisor.
SARA-G3 and SARA-U2 series - System Integration Manual Threshold definitions When the module application operates at extreme temperatures with Smart Temperature Supervisor enabled, the user should note that outside the valid temperature range the device automatically shuts down as described above. The input for the algorithm is always the temperature measured within the cellular module (Ti, internal).
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.11 AssistNow clients and GNSS integration Not supported by SARA-G300 and SARA-G310 modules. For customers using u-blox GNSS receivers, SARA-G340, SARA-G350 and SARA-U2 modules feature embedded AssistNow clients. AssistNow A-GPS provides better GNSS performance and faster Time-To-First-Fix. The clients can be enabled and disabled with an AT command (see the u-blox AT Commands Manual [3]).
SARA-G3 and SARA-U2 series - System Integration Manual ® 1. Several devices reported their position to the CellLocate server when observing a specific cell (the As in the picture represent the position of the devices which observed the same cell A) ® 2. CellLocate server defines the area of Cell A visibility ® 3.
SARA-G3 and SARA-U2 series - System Integration Manual 4. The visibility of multiple cells provides increased accuracy based on the intersection of areas of visibility. ® ® CellLocate is implemented using a set of two AT commands that allow configuration of the CellLocate service (AT+ULOCCELL) and requesting position according to the user configuration (AT+ULOC). The answer is provided in the form of an unsolicited AT command including latitude, longitude and estimated accuracy.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.13 Control Plane Aiding / Location Services (LCS) Not supported by SARA-G3 series modules. Not supported by the “00” product version of SARA-U2 module. With the Assisted GPS feature, a location server provides the module with the GPS system information that otherwise must be downloaded from satellites. The feature allows faster position fixes, increases sensitivity and reduces module power consumption.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.17 Firmware upgrade Over AT (FOAT) Overview This feature allows upgrading the module Firmware over the AT interface of the module (the UART for SARA-G3 modules, the UART or the USB for SARA-U2 modules), using AT Commands.
SARA-G3 and SARA-U2 series - System Integration Manual 1.13.19 SIM Access Profile (SAP) Not supported by SARA-G3 modules. SIM access profile (SAP) feature allows SARA-U2 modules to access and use a remote (U)SIM card instead of the local SIM card directly connected to the module (U)SIM interface. SARA-U2 modules provide a dedicated USB SAP channel and dedicated multiplexer SAP channel over UART for communication with the remote (U)SIM card.
SARA-G3 and SARA-U2 series - System Integration Manual Device including SIM Mobile Equipment SAP Server Bluetooth transceiver Device including SARA-U2 SAP Bluetooth interface SAP Bluetooth Transceiver Application Serial interface processor (SAP channel over USB or UART) SARA-U2 SAP client GSM/UMTS interface Local SIM Remote SIM (optional) Figure 38: Remote SIM access via Bluetooth and wired connection The application processor can start an SAP connection negotiation between SARA-U2 module SAP cl
SARA-G3 and SARA-U2 series - System Integration Manual 2 Design-in 2.1 Overview For an optimal integration of SARA-G3 and SARA-U2 series modules in the final application board follow the design guidelines stated in this section. Every application circuit must be properly designed to guarantee the correct functionality of the related interface, however a number of points require higher attention during the design of the application device.
SARA-G3 and SARA-U2 series - System Integration Manual 2.2 Supply interfaces 2.2.1 Module supply (VCC) 2.2.1.1 General guidelines for VCC supply circuit selection and design All the available VCC pins have to be connected to the external supply minimizing the power loss due to series resistance.
SARA-G3 and SARA-U2 series - System Integration Manual voltage (e.g. ~12 V), whereas a linear charger is the typical choice when the charging source has a relatively low nominal voltage (~5 V). If both a permanent primary supply / charging source (e.g. ~12 V) and a rechargeable back-up battery (e.g. 3.
SARA-G3 and SARA-U2 series - System Integration Manual x PWM mode operation: it is preferable to select regulators with Pulse Width Modulation (PWM) mode. While in connected-mode Pulse Frequency Modulation (PFM) mode and PFM/PWM mode, transitions must be avoided to reduce the noise on the VCC voltage profile.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 41 and the components listed in Table 24 show an example of a low cost power supply circuit, where the VCC module supply is provided by a step-down switching regulator capable of delivering to VCC pins the specified maximum peak / pulse current, transforming a 12 V supply input.
SARA-G3 and SARA-U2 series - System Integration Manual x Output voltage slope: the use of the soft start function provided by some voltage regulator should be carefully evaluated, since the VCC pins voltage must ramp from 2.5 V to 3.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-G3 / SARA-U2 5V VCC VCC 53 VCC 51 2 IN OUT 4 52 U1 C1 R1 1 EN ADJ GND 3 C2 5 GND R2 Figure 43: Suggested low cost solution for the VCC voltage supply application circuit using an LDO linear regulator Reference Description Part Number - Manufacturer C1, C2 10 μF Capacitor Ceramic X5R 0603 20% 6.3 V GRM188R60J106ME47 - Murata R1 27 k: Resistor 0402 5% 0.1 W RC0402JR-0727KL - Yageo Phycomp R2 4.7 k: Resistor 0402 5% 0.
SARA-G3 and SARA-U2 series - System Integration Manual 2.2.1.6 Additional guidelines for VCC supply circuit design To reduce voltage drops, use a low impedance power source. The resistance of the power supply lines (connected to the VCC and GND pins of the module) on the application board and battery pack should also be considered and minimized: cabling and routing must be as short as possible to minimize power losses. Three pins are allocated for VCC supply.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-U201 Capacitor with SRF ~900 MHz 3V8 VCC VCC VCC 61 62 Ferrite Bead for GHz noise FB1 C5 Capacitor with SRF ~1900 MHz GND plane 63 + C1 C2 C3 C4 C1 C2 C3 C4 SARA-U201 C5 FB1 VCC line GND Figure 45: Suggested schematic and layout design for the VCC line of SARA-U201 module; highly recommended when using an integrated antenna Reference Description Part Number - Manufacturer C1 330 μF Capacitor Tantalum D_SIZE 6.
SARA-G3 and SARA-U2 series - System Integration Manual Reference Description Part Number - Manufacturer C1 330 μF Capacitor Tantalum D_SIZE 6.
SARA-G3 and SARA-U2 series - System Integration Manual Li-Ion/Li-Polymer Battery Charger IC SARA-G3 / SARA-U2 5V USB Supply VIN VINSNS MODE R1 R2 R3 Ferrite Bead or 0Ω VOUT VOSNS Li-Ion/Li-Pol Battery Pack VREF 51 VCC 52 VCC 53 VCC ISEL C3 IUSB IAC R4 C4 TH + θ IEND C5 C6 C7 C8 C9 TPRG SD C1 B1 GND C2 GND D1D2 U1 Figure 47: Li-Ion (or Li-Polymer) battery charging application circuit Reference Description Part Number - Manufacturer B1 Various manufacturer C1, C4 Li-Ion (or Li-
SARA-G3 and SARA-U2 series - System Integration Manual Power path management IC 12 V Primary Source Vin System Vout DC/DC converter and battery FET control logic Li-Ion/Li-Pol Battery Pack Vbat Charge controller GND GND θ Figure 48: Charger / regulator with integrated power path management circuit block diagram Figure 49 and the components listed in Table 30 provide an application circuit example where the MPS MP2617 switching charger / regulator with integrated power path management function pro
SARA-G3 and SARA-U2 series - System Integration Manual Li-Ion/Li-Polymer Battery Charger / Regulator with Power Path Managment BST 12V L1 SW Primary Source VIN SARA-G3 / SARA-U2 C4 51 VCC 52 VCC 53 VCC R4 C5 VLIM R5 Li-Ion/Li-Pol Battery Pack BAT R1 R2 EN + ILIM NTC ISET VCC C9 C10 C11 C12 C13 θ R3 TMR C1 Ferrite Bead or 0Ω SYS C2 AGND PGND C3 C6 C7 C8 GND D1 D2 B1 U1 Figure 49: Li-Ion (or Li-Polymer) battery charging and power path management application circuit Reference
SARA-G3 and SARA-U2 series - System Integration Manual x The bypass capacitors in the pF range and ferrite bead described in Figure 44, Figure 45 and Table 27 should be placed as close as possible to the VCC pins. This is highly recommended if the application device integrates an internal antenna. x Since VCC is directly connected to RF Power Amplifiers, voltage ripple at high frequency may result in unwanted spurious modulation of transmitter RF signal.
SARA-G3 and SARA-U2 series - System Integration Manual 2.2.2 RTC supply (V_BCKP) 2.2.2.1 Guidelines for V_BCKP circuit design If RTC timing is required to run for a time interval of T [s] at 25 °C when VCC supply is removed, place a capacitor with a nominal capacitance of C [μF] at the V_BCKP pin. Choose the capacitor using the following formula: C [μF] = (Current_Consumption [μA] x T [s]) / Voltage_Drop [V] = 1.5 x T [s] for SARA-G3 series = 2.
SARA-G3 and SARA-U2 series - System Integration Manual Combining a SARA-G3 or a SARA-U2 cellular module with a u-blox GNSS positioning receiver, the positioning receiver VCC supply is controlled by the cellular module by means of the “GNSS supply enable” function provided by the GPIO2 of the cellular module.
SARA-G3 and SARA-U2 series - System Integration Manual Since the V_INT supply is generated by an internal switching step-down regulator, the V_INT voltage ripple can range from 15 mVpp during active-mode or connected-mode (when the switching regulator operates in PWM mode), to 90 mVpp (SARA-G3 series) or 70 mVpp (SARA-U2 series) in low power idle-mode (when the switching regulator operates in PFM mode). It is not recommended to supply sensitive analog circuitry without adequate filtering for digital noise.
SARA-G3 and SARA-U2 series - System Integration Manual 2.3 System functions interfaces 2.3.1 Module power-on (PWR_ON) 2.3.1.1 Guidelines for PWR_ON circuit design Connecting the PWR_ON input to a push button that shorts the PWR_ON pin to ground, provide an external pull-up resistor (e.g. 100 kΩ) biased by the V_BCKP supply pin of the module, as described in Figure 51 and Table 32.
SARA-G3 and SARA-U2 series - System Integration Manual 2.3.1.
SARA-G3 and SARA-U2 series - System Integration Manual 2.3.2.2 Guidelines for RESET_N layout design The reset circuit (RESET_N) requires careful layout due to the pin function: ensure that the voltage level is well defined during operation and no transient noise is coupled on this line, otherwise the module might detect a spurious reset request. It is recommended to keep the connection line to RESET_N as short as possible. 2.3.
SARA-G3 and SARA-U2 series - System Integration Manual The two different solutions described in Figure 53 and Figure 54 are alternative and mutually exclusive: only one of the two proposed solutions must be implemented according to the required current consumption figures for the idle-mode (for the detailed characteristics see the SARA-G3 series Data Sheet [1]).
SARA-G3 and SARA-U2 series - System Integration Manual 2.4 Antenna interface The ANT pin, provided by all the SARA-G3 and SARA-U2 series modules, represents the RF input/output used to transmit and receive the 2G/3G RF cellular signals: the antenna must be connected to this pin. The ANT pin has a nominal characteristic impedance of 50 : and must be connected to the antenna through a 50 : transmission line to allow transmission and reception of radio frequency (RF) signals in the 2G and 3G operating bands.
SARA-G3 and SARA-U2 series - System Integration Manual In both cases, selecting an external or an internal antenna, observe these recommendations: x Select an antenna providing optimal return loss (or V.S.W.R.) figure over all the operating frequencies. x Select an antenna providing optimal efficiency figure over all the operating frequencies. x Select an antenna providing appropriate gain figure (i.e.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 56 and Figure 57 provide two examples of proper 50 : coplanar waveguide designs. The first transmission line can be implemented in case of 4-layer PCB stack-up herein described, the second transmission line can be implemented in case of 2-layer PCB stack-up herein described.
SARA-G3 and SARA-U2 series - System Integration Manual Additionally to the 50 : impedance, the following guidelines are recommended for the transmission line design: x Minimize the transmission line length: the insertion loss should be minimized as much as possible, in the order of a few tenths of a dB. x Add GND keep-out (i.e.
SARA-G3 and SARA-U2 series - System Integration Manual Guidelines for RF termination design The RF termination must provide a characteristic impedance of 50 : as well as the RF transmission line up to the RF termination itself, to match the characteristic impedance of the ANT pin of the module. However, real antennas do not have perfect 50 : load on all the supported frequency bands.
SARA-G3 and SARA-U2 series - System Integration Manual Examples of antennas Table 35 lists some examples of possible internal on-board surface-mount antennas Manufacturer Part Number Product Name Description Taoglas PA.25.A Anam Taoglas PA.710.A Warrior Taoglas PA.711.A Warrior II Taoglas PCS.06.A Havok Antenova A10340 Calvus Ethertronics P522304 Prestta 2J 2JE04 GSM / WCDMA SMD Antenna 824..960 MHz, 1710..2170 MHz 36.0 x 6.0 x 5.0 mm GSM / WCDMA / LTE SMD Antenna 698..
SARA-G3 and SARA-U2 series - System Integration Manual Table 37 lists some examples of possible external antennas. Manufacturer Part Number Product Name Description Taoglas GSA.8827.A.101111 Phoenix Taoglas GSA.8821.A.301721 I-Bar Taoglas TG.30.8112 Taoglas OMB.8912.03F21 Taoglas FW.92.RNT.M Nearson T6150AM GSM / WCDMA / LTE low-profile adhesive-mount Antenna with cable and SMA(M) connector 698..960 MHz, 1575.42 MHz, 1710..2170 MHz, 2490..2690 MHz 105 x 30 x 7.
SARA-G3 and SARA-U2 series - System Integration Manual 2.4.2 Antenna detection interface (ANT_DET) Antenna detection interface (ANT_DET) is not supported by SARA-G300 and SARA-G310 modules. 2.4.2.1 Guidelines for ANT_DET circuit design Figure 59 and Table 38 describe the recommended schematic and components for the antenna detection circuit to be provided on the application board for the diagnostic circuit that must be provided on the antenna assembly to achieve antenna detection functionality.
SARA-G3 and SARA-U2 series - System Integration Manual x Additional high pass filter (C3 and L2 in Figure 59) is provided at the ANT pin as ESD immunity improvement for SARA-U260, SARA-U270 and SARA-U280 modules (a series 0 : jumper can be mounted for SARA-G340 and SARA-G350 modules instead of the high pass filter, as no further precaution to ESD immunity test is needed).
SARA-G3 and SARA-U2 series - System Integration Manual 2.4.2.2 Guidelines for ANT_DET layout design Figure 60 describes the recommended layout for the antenna detection circuit to be provided on the application board to achieve antenna detection functionality, implementing the recommended schematic described in the previous Figure 59 and Table 38.
SARA-G3 and SARA-U2 series - System Integration Manual 2.5 SIM interface 2.5.1.
SARA-G3 and SARA-U2 series - System Integration Manual Guidelines for single SIM card connection without detection An application circuit for the connection to a single removable SIM card placed in a SIM card holder is described in Figure 61, where the optional SIM detection feature is not implemented (see the circuit described in Figure 63 if the SIM detection feature is required).
SARA-G3 and SARA-U2 series - System Integration Manual Guidelines for single SIM chip connection An application circuit for the connection to a single solderable SIM chip (M2M UICC Form Factor) is described in Figure 62, where the optional SIM detection feature is not implemented (see the circuit described in Figure 63 if the SIM detection feature is required).
SARA-G3 and SARA-U2 series - System Integration Manual Guidelines for single SIM card connection with detection SIM card detection is not supported by SARA-G300-00S and SARA-G310-00S modules. An application circuit for the connection to a single removable SIM card placed in a SIM card holder is described in Figure 63, where the optional SIM card detection feature is implemented.
SARA-G3 and SARA-U2 series - System Integration Manual Guidelines for dual SIM card / chip connection Two SIM card / chip can be connected to the modules’ SIM interface as described in the circuit of Figure 64.
SARA-G3 and SARA-U2 series - System Integration Manual FIRST SIM CARD SARA-G3 / SARA-U2 VSIM 41 3V8 VPP (C6) 4PDT C11 Analog Switch VCC 1VSIM VSIM 2VSIM VCC (C1) SIM_IO 39 DAT 1DAT 2DAT SIM_CLK 38 CLK 1CLK 2CLK RST 1RST 2RST SIM_RST 40 IO (C7) CLK (C3) RST (C2) GND (C5) C1 C2 C3 C4 C5 D1 D2 D3 D4 J1 SECOND SIM CARD VPP (C6) SEL GND VCC (C1) U1 IO (C7) CLK (C3) Application Processor RST (C2) GPIO GND (C5) C6 R1 C7 C8 C9 C10 D5 D6 D7 D8 J2 Figure 64: Application circuit for
SARA-G3 and SARA-U2 series - System Integration Manual 2.6 Serial interfaces 2.6.1 Asynchronous serial interface (UART) 2.6.1.1 Guidelines for UART circuit design Providing the full RS-232 functionality (using the complete V.24 link) If RS-232 compatible signal levels are needed, two different external voltage translators (e.g. Maxim MAX3237E and Texas Instruments SN74AVC8T245PW) can be used to provide full RS-232 (9 lines) functionality. The Texas Instruments chip provides the translation from 1.
SARA-G3 and SARA-U2 series - System Integration Manual Providing the TXD, RXD, RTS, CTS and DTR lines only (not using the complete V.24 link) If the functionality of the DSR, DCD and RI lines is not required, or the lines are not available: x Leave DSR, DCD and RI lines of the module unconnected and floating If RS-232 compatible signal levels are needed, two different external voltage translators (e.g. Maxim MAX3237E and Texas Instruments SN74AVC4T774) can be used.
SARA-G3 and SARA-U2 series - System Integration Manual If only TXD, RXD, RTS, CTS and DTR lines are provided (as implemented in Figure 67 and in Figure 68) and if HW flow-control is enabled (AT&K3, default setting), the power saving can be activated as it can be done when the complete UART link is provided (9-wire, as implemented in Figure 65 and in Figure 66), i.e.
SARA-G3 and SARA-U2 series - System Integration Manual If a 3.0 V Application Processor (DTE) is used, then it is recommended to connect the 1.8 V UART interface of the module (DCE) by means of appropriate unidirectional voltage translators using the module V_INT output as 1.8 V supply for the voltage translators on the module side, as described in Figure 70. Application Processor (3.
SARA-G3 and SARA-U2 series - System Integration Manual If RS-232 compatible signal levels are needed, the Maxim 13234E voltage level translator can be used. This chip translates voltage levels from 1.8 V (module side) to the RS-232 standard. If a 1.8 V Application Processor (DTE) is used, the circuit that should be implemented as described in Figure 71: Application Processor (1.8V DTE) SARA-G3 / SARA-U2 (1.
SARA-G3 and SARA-U2 series - System Integration Manual In this case the first character sent when the module is in idle-mode will be a wake-up character and will not be a valid communication character (see section 1.9.1.4 for the complete description). If power saving is enabled the application circuit with the TXD and RXD lines only is not recommended. During command mode the DTE must send to the module a wake-up character or a dummy “AT” before each command line (see section 1.9.1.
SARA-G3 and SARA-U2 series - System Integration Manual 2.6.2 Auxiliary asynchronous serial interface (UART AUX) Auxiliary UART interface is not supported by SARA-U2 modules. 2.6.2.1 Guidelines for UART AUX circuit design The auxiliary UART interface can be connected to an application processor for AT command mode and/or GNSS tunneling mode supported by SARA-G3 modules product versions “02” onwards.
SARA-G3 and SARA-U2 series - System Integration Manual Any external signal connected to the auxiliary UART interface must be tri-stated or set low when the module is in power-down mode and during the module power-on sequence (at least until the activation of the V_INT output), to avoid latch-up of circuits and allow a proper boot of the module. If the external signals connected to the cellular module cannot be tri-stated or set low, insert a multi channel digital switch (e.g.
SARA-G3 and SARA-U2 series - System Integration Manual 2.6.3 Universal Serial Bus (USB) USB interface is not supported by SARA-G3 modules. 2.6.3.1 Guidelines for USB circuit design The USB_D+ and USB_D- lines carry the USB serial data and signaling. The lines are used in single ended mode for full speed signaling handshake, as well as in differential mode for high speed signaling and data transfer. USB pull-up or pull-down resistors on USB_D+ and USB_D- as required by the Universal Serial Bus Revision 2.
SARA-G3 and SARA-U2 series - System Integration Manual 2.6.3.2 Guidelines for USB layout design The USB_D+ / USB_D- lines require accurate layout design to achieve reliable signaling at the high speed data rate (up to 480 Mb/s) supported by the USB serial interface. The characteristic impedance of the USB_D+ / USB_D- lines is specified by the Universal Serial Bus Revision 2.0 specification [14].
SARA-G3 and SARA-U2 series - System Integration Manual 2 2.6.4 DDC (I C) interface 2 DDC (I C) interface is not supported by SARA-G300 and SARA-G310 modules. 2.6.4.1 2 Guidelines for DDC (I C) circuit design General considerations 2 The DDC I C-bus master interface of SARA-G340, SARA-G350 and SARA-U2 cellular modules can be used to communicate with u-blox GNSS receivers and, on SARA-U2 modules only, it can be also used to communicate 2 with other external I C-bus slaves as an audio codec.
SARA-G3 and SARA-U2 series - System Integration Manual Connection with u-blox 1.8 V GNSS receivers Figure 78 shows an application circuit example for connecting a SARA-G340, SARA-G350 or SARA-U2 cellular module to a u-blox 1.8 V GNSS receiver: x The SDA and SCL pins of the cellular module are directly connected to the related pins of the u-blox 1.8 V GNSS receiver, with appropriate pull-up resistors connected to the 1.8 V GNSS supply enabled after the 2 V_INT supply of the I C pins of the cellular module.
SARA-G3 and SARA-U2 series - System Integration Manual The supply of the u-blox 1.8 V GNSS receiver can be switched off using an external p-channel MOSFET controlled by the GPIO2 pin by means of a proper inverting transistor as shown in Figure 79, implementing the “GNSS supply enable” function. If this feature is not required, the V_INT supply output can be directly connected to the u-blox 1.8 V GNSS receiver, so that it will be switched on when V_INT output is enabled.
SARA-G3 and SARA-U2 series - System Integration Manual Connection with u-blox 3.0 V GNSS receivers Figure 80 shows an application circuit example for connecting a SARA-G340 or a SARA-G350 cellular module to a u-blox 3.0 V GNSS receiver: x The SDA and SCL pins of SARA-G340 / SARA-G350 are directly connected to the related pins of the u-blox 3.0 V GNSS receiver, with appropriate pull-up resistors connected to the 3.0 V GNSS supply enabled after 2 2 the V_INT supply of the I C pins of the cellular module.
SARA-G3 and SARA-U2 series - System Integration Manual Figure 81 shows an application circuit example for connecting a SARA-U2 cellular module to a u-blox 3.0 V GNSS receiver: x As the SDA and SCL pins of the SARA-U2 cellular module are not tolerant up to 3.0 V, the connection to 2 2 the related I C pins of the u-blox 3.0 V GNSS receiver must be provided using a proper I C-bus Bidirectional Voltage Translator (e.g. TI TCA9406, which additionally provides the partial power down feature so that the GNSS 3.
SARA-G3 and SARA-U2 series - System Integration Manual For additional guidelines regarding the design of applications with u-blox 3.0 V GNSS receivers see the GNSS Implementation Application Note [27] and to the Hardware Integration Manual of the u-blox GNSS receivers. 2 2.6.4.2 Guidelines for DDC (I C) layout design 2 The DDC (I C) serial interface requires the same consideration regarding electro-magnetic interference as any other digital interface.
SARA-G3 and SARA-U2 series - System Integration Manual 2.7 Audio interface 2.7.1 Analog audio interface SARA-G300, SARA-G310 and SARA-U2 modules do not provide analog audio interface. 2.7.1.
SARA-G3 and SARA-U2 series - System Integration Manual x Provide proper parts on each line connected to the receiver / speaker as noise and EMI improvements, to minimize RF coupling, according to EMC requirements of the custom application. o x Mount a 27 pF bypass capacitor (e.g. Murata GRM1555C1H270J) from each speaker line to solid ground plane (C6 and C7 capacitors in Figure 82). Provide additional ESD protection (e.g.
SARA-G3 and SARA-U2 series - System Integration Manual 2.7.1.2 Guidelines for microphone and loudspeaker connection circuit design (hands-free mode) Figure 83 shows an application circuit for the analog audio interface in hands-free mode, connecting a 2.2 k: electret microphone and an 8 : or 4 : loudspeaker: x External microphone can be connected to the uplink path of the module, since the module provides supply and reference as well as differential signal input for the external microphone.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-G340 SARA-G350 MIC_BIAS 46 R1 C1 MIC_P R2 R4 C2 49 C3 MIC_N 48 Microphone Connector MIC L1 R3 L2 MIC_GND 47 J1 VCC C4 Audio Amplifier C5 D1 C10 C11 VDD SPK_P 44 SPK_N 45 C8 C9 R5 OUT+ IN+ OUT- INR6 D2 Loud-Speaker LSPK Connector J2 GND C6 U1 C7 D3 D4 Figure 83: Analog audio interface hands-free mode application circuit Reference Description Part Number – Manufacturer C1, C10 C2, C3, C11 10 μF Capacitor Ceramic
SARA-G3 and SARA-U2 series - System Integration Manual 2.7.1.3 Guidelines for external analog audio device connection circuit design The differential analog audio I/O can be used to connect the module to an external analog audio device. Audio devices with a differential analog I/O are preferable, as they are more immune to external disturbances. Figure 84 and Table 55 describe the application circuits, following the suggested circuit design-in.
SARA-G3 and SARA-U2 series - System Integration Manual Reference Description Part Number – Manufacturer C1, C2, C3, C4, C5, C6, C7, C8 R1, R3 R2, R4 10 μF Capacitor X5R 0603 5% 6.3 V GRM188R60J106M – Murata 0 Ω Resistor 0402 5% 0.1 W Not populated RC0402JR-070RL – Yageo Phycomp Table 55: Connection to an analog audio device 2.7.1.4 Guidelines for analog audio layout design Accurate analog audio design is very important to obtain clear and high quality audio.
SARA-G3 and SARA-U2 series - System Integration Manual 2.7.2 Digital audio interface SARA-G300 and SARA-G310 modules do not provide digital audio interface. 2.7.2.1 Guidelines for digital audio circuit design 2 The I S digital audio interface of SARA-G3 and SARA-U2 series modules can be connected to an external digital audio device for voice applications.
SARA-G3 and SARA-U2 series - System Integration Manual 2 Figure 85 and Table 56 describe an application circuit example for the I S digital audio interface of SARA-U2 modules providing voice capability using an external audio voice codec. DAC and ADC integrated in the external audio codec respectively converts an incoming digital data stream to analog audio output through a mono amplifier and converts the microphone input signal to the digital bit stream over the digital audio interface.
SARA-G3 and SARA-U2 series - System Integration Manual 2 Figure 86 describes an application circuit example for connecting the I S digital audio interface of SARA-G340, SARA-G350 and SARA-U2 modules to an external audio voice codec, using the same parts listed in Table 56. x The module’s I S interface (I S master) is connected to the related pins of the external audio codec (I S slave). x The V_INT output supplies the external audio codec, defining proper digital interfaces voltage level.
SARA-G3 and SARA-U2 series - System Integration Manual 2.8 General Purpose Input/Output (GPIO) 2.8.1.1 Guidelines for GPIO circuit design The following application circuits are suggested as a general guideline for the usage of the GPIO pins available with the SARA-G340 / SARA-G350 and SARA-U2 series modules, according to the related custom function.
SARA-G3 and SARA-U2 series - System Integration Manual supply output of the module), to avoid latch-up of circuits and allow a proper boot of the module. If the external signals connected to the cellular module cannot be tri-stated or set low, insert a multi channel digital switch (e.g. Texas Instruments SN74CB3Q16244, TS5A3159, or TS5A63157) between the twocircuit connections and set to high impedance during module power down mode and during the module power-on sequence.
SARA-G3 and SARA-U2 series - System Integration Manual 2.11 Module footprint and paste mask Figure 89 and Table 58 describe the suggested footprint (i.e. copper mask) and paste mask layout for SARA modules: the proposed land pattern layout reflects the modules’ pins layout, while the proposed stencil apertures layout is slightly different (see the F’’, H’’, I’’, J’’, O’’ parameters compared to the F’, H’, I’, J’, O’ ones).
SARA-G3 and SARA-U2 series - System Integration Manual 2.12 Thermal guidelines SARA-G3 and SARA-U2 series modules operating temperature range and thermal data are specified in the SARA-G3 series Data Sheet [1] or the SARA-U2 series Data Sheet [2].
SARA-G3 and SARA-U2 series - System Integration Manual A few hardware techniques may be used to reduce the Module-to-Ambient thermal resistance in the application: x Connect each GND pin with solid ground layer of the application board and connect each ground area of the multilayer application board with complete via stack down to main ground layer x Provide a ground plane as wide as possible on the application board x Optimize antenna return loss, to optimize overall electrical performance of the mod
SARA-G3 and SARA-U2 series - System Integration Manual 2.13 ESD guidelines The sections 2.13.1 and 2.13.2 are related to EMC / ESD immunity, herein described in section 2.13.1. The modules are ESD sensitive devices and the ESD sensitivity for each pin (as Human Body Model according to JESD22-A114F) is specified in SARA-G3 series Data Sheet [1] or SARA-U2 series Data Sheet [2], requiring special precautions when handling: for ESD handling guidelines see section 3.2. 2.13.
SARA-G3 and SARA-U2 series - System Integration Manual Table 60 reports the u-blox SARA-G3 and SARA-U2 reference designs ESD immunity test results, according to the CENELEC EN 61000-4-2 [19], ETSI EN 301 489-1 [20], 301 489-7 [21], 301 489-24 [22] test requirements.
SARA-G3 and SARA-U2 series - System Integration Manual LQG15HN39NJ02) should be implemented at the antenna port as described in the Figure 58, Figure 59 and Figure 60, as implemented in the EMC / ESD approved reference design of SARA-U2 modules The antenna interface application circuit implemented in the EMC / ESD approved reference designs of SARA-G3 and SARA-U2 series modules is described in Figure 58 in case of antenna detection circuit not implemented, and is described in Figure 59 and Table 38 in case
SARA-G3 and SARA-U2 series - System Integration Manual 2.14 SARA-G340 ATEX, SARA-G350 ATEX, SARA-U201 ATEX and SARA-U270 ATEX integration in explosive atmospheres applications 2.14.1 General guidelines SARA-G340 ATEX, SARA-G350 ATEX, SARA-U201 ATEX and SARA-U270 ATEX modules are certified as components intended for use in potentially explosive atmospheres (see section 4.
SARA-G3 and SARA-U2 series - System Integration Manual the applicable certification schemes, directives and standards required for use in potentially explosive atmospheres are the sole responsibility of the application device manufacturer.
SARA-G3 and SARA-U2 series - System Integration Manual Parameter SARA-G350 ATEX SARA-G340 ATEX SARA-U270 ATEX Ui 4.2 V 4.2 V Ii Pi 2.5 A (burst) 2.5 W 2.5 A (burst) 3.5 W Ci 103 μF 132 μF Li 4.1 μH 9.
SARA-G3 and SARA-U2 series - System Integration Manual pulse power and 1.15 mJ RF pulse energy in 850/900 MHz bands and with a maximum output of 1 W RF pulse power and 0.58 mJ RF pulse energy in the 1800/1900 MHz bands according to the GSM/GPRS power classes stated in Table 2. The maximum average power of SARA-U270 ATEX, according to the WCDMA power class stated in Table 3, is 250 mW.
SARA-G3 and SARA-U2 series - System Integration Manual 2.15 Schematic for SARA-G3 and SARA-U2 series module integration 2.15.1 Schematic for SARA-G300 / SARA-G310 modules integration Figure 90 is an example of a schematic diagram where a SARA-G300 / SARA-G310 module is integrated into an application board, using all the available interfaces and functions of the module.
SARA-G3 and SARA-U2 series - System Integration Manual 2.15.2 Schematic for SARA-G340 / SARA-G350 modules integration Figure 91 is an example of a schematic diagram where a SARA-G340 / SARA-G350 module is integrated into an application board, using all the available interfaces and functions of the module.
SARA-G3 and SARA-U2 series - System Integration Manual 2.15.3 Schematic for SARA-U2 series modules integration Figure 92 is an example of a schematic diagram where a SARA-U2 module is integrated into an application board, using all the available interfaces and functions of the module.
SARA-G3 and SARA-U2 series - System Integration Manual 2.16 Design-in checklist This section provides a design-in checklist. 2.16.1 Schematic checklist The following are the most important points for a simple schematic check: 5 5 DC supply must provide a nominal voltage at VCC pin above the minimum operating range limit. DC supply must be capable of providing 1.
SARA-G3 and SARA-U2 series - System Integration Manual 2.16.2 Layout checklist The following are the most important points for a simple layout check: 5 Check 50 : nominal characteristic impedance of the RF transmission line connected to the ANT pad (antenna RF input/output interface). 5 Follow the recommendations of the antenna producer for correct antenna installation and deployment (PCB layout and matching circuitry).
SARA-G3 and SARA-U2 series - System Integration Manual 3 Handling and soldering No natural rubbers, no hygroscopic materials or materials containing asbestos are employed. 3.1 Packaging, shipping, storage and moisture preconditioning For information pertaining to reels and tapes, Moisture Sensitivity levels (MSD), shipment and storage information, as well as drying for preconditioning see the SARA-G3 series Data Sheet [1] or the SARA-U2 series Data Sheet [2] and the u-blox Package Information Guide [30].
SARA-G3 and SARA-U2 series - System Integration Manual 3.3 Soldering 3.3.1 Soldering paste Use of "No Clean" soldering paste is strongly recommended, as it does not require cleaning after the soldering process has taken place. The paste listed in the example below meets these criteria. Soldering Paste: OM338 SAC405 / Nr.143714 (Cookson Electronics) Alloy specification: 95.5% Sn / 3.9% Ag / 0.6% Cu (95.5% Tin / 3.9% Silver / 0.6% Copper) 95.5% Sn / 4.0% Ag / 0.5% Cu (95.5% Tin / 4.0% Silver / 0.
SARA-G3 and SARA-U2 series - System Integration Manual To avoid falling off, modules should be placed on the topside of the motherboard during soldering. The soldering temperature profile chosen at the factory depends on additional external factors like choice of soldering paste, size, thickness and properties of the base board, etc. Exceeding the maximum soldering temperature and the maximum liquidus time limit in the recommended soldering profile may permanently damage the module.
SARA-G3 and SARA-U2 series - System Integration Manual 3.3.5 Repeated reflow soldering Only a single reflow soldering process is encouraged for boards with a SARA-G3 and SARA-U2 series module populated on it. 3.3.6 Wave soldering Boards with combined through-hole technology (THT) components and surface-mount technology (SMT) devices require wave soldering to solder the THT components. Only a single wave soldering process is encouraged for boards populated with SARA-G3 and SARA-U2 series modules. 3.3.
SARA-G3 and SARA-U2 series - System Integration Manual 4 Approvals For the complete list of all the certification schemes approvals of SARA-G3 and SARA-U2 series modules and the corresponding declarations of conformity, see the u-blox web-site (http://www.u-blox.com). 4.
SARA-G3 and SARA-U2 series - System Integration Manual 4.
SARA-G3 and SARA-U2 series - System Integration Manual The gain of the system antenna(s) used for SARA-U201 modules (i.e. the combined transmission line, connector, cable losses and radiating element gain) must not exceed TBD dBi (850 MHz) and TBD dBi (1900 MHz) for mobile and fixed or mobile operating configurations. 4.2.
SARA-G3 and SARA-U2 series - System Integration Manual Son fonctionnement est soumis aux deux conditions suivantes: o cet appareil ne doit pas causer d'interférence o cet appareil doit accepter toute interférence, notamment les interférences qui peuvent affecter son fonctionnement Informations concernant l'exposition aux fréquences radio (RF) La puissance de sortie émise par l’appareil de sans fil u-blox Cellular Module est inférieure à la limite d'exposition aux fréquences radio d'Industrie Canada (IC).
SARA-G3 and SARA-U2 series - System Integration Manual 1909 The conformity assessment procedure for SARA-G340 ATEX, SARA-G350 ATEX, SARA-U201 ATEX and SARA-U270 ATEX modules, referred to in Article 10 and detailed in Annex IV of Directive 1999/5/EC, has been followed with the involvement of the following Notified Body number: 1304. According to the ATEX Directive 2014/34/EU; Article 13, Paragraph 1-3, the CE mark is not affixed to the product label.
SARA-G3 and SARA-U2 series - System Integration Manual Anatel IDs for the SARA-U201 modules: x Homologation number 04466-15-05903 4.5 Australian Regulatory Compliance Mark SARA-G310, SARA-G350, SARA-U260, SARA-U270 and SARA-U280 modules are compliant with the standards made by the Australian Communications and Media Authority (ACMA) under Section 376 of the Telecommunications Act 1997. Modules are compliant with the following list of standards: x AS/CA S042.
SARA-G3 and SARA-U2 series - System Integration Manual 4.8 Korean KCC certification SARA-U270 module is certified by the Korea Communications Commission (KCC). KCC ID for SARA-U270 modules: x SARA-U270: MSIP-CRM-ULX-SARA-U270 4.9 Taiwanese NCC certification SARA-G340-02S and SARA-G350 modules are certified by the Taiwanese National Communications Commission (NCC).
SARA-G3 and SARA-U2 series - System Integration Manual 4.
SARA-G3 and SARA-U2 series - System Integration Manual 5 Product testing 5.1 u-blox in-series production test u-blox focuses on high quality for its products. All units produced are fully tested. Defective units are analyzed in detail to improve the production quality. This is achieved with automatic test equipment, which delivers a detailed test report for each unit.
SARA-G3 and SARA-U2 series - System Integration Manual x Component assembly on the device; it should be verified that: o Communication with host controller can be established o The interfaces between module and device are working o Overall RF performance test of the device including antenna Dedicated tests can be implemented to check the device.
SARA-G3 and SARA-U2 series - System Integration Manual Cellular Antenna Application Processor AT Commands Wideband Antenna SARA-G3 SARA-U2 ANT TX IN Spectrum Analyzer or Power Meter OUT Signal Generator Application Board Cellular Antenna Application Processor AT Commands Wideband Antenna SARA-G3 SARA-U2 ANT RX Application Board Figure 95: Setup with spectrum analyzer and signal generator for radiated measurement This feature allows the measurement of the transmitter and receiver power lev
SARA-G3 and SARA-U2 series - System Integration Manual Example of production tests for OEM manufacturer: 1.
SARA-G3 and SARA-U2 series - System Integration Manual Appendix A Migration between LISA and SARA-G3 modules A.1 Overview Migrating between LISA-U1, LISA-U2, LISA-C2 series and SARA-G3 series module designs is a straight-forward procedure that allows customers to take maximum advantage of their hardware and software investments.
SARA-G3 and SARA-U2 series - System Integration Manual The voltage level of all the digital interfaces of SARA and LISA modules is 1.8 V: this allows the direct connection from a 1.8 V external device (e.g. application processor) to all the modules.
SARA-G3 and SARA-U2 series - System Integration Manual A.3 Software migration Software migration between SARA-G3 and LISA cellular modules is a straightforward procedure. Nevertheless there are some differences to be considered with firmware version. Each cellular module supports AT commands according to 3GPP standards: TS 27.007 [11], TS 27.005 [12], TS 27.010 [13] and the u-blox AT command extension. Backward compatibility has been maintained as far as possible.
SARA-G3 and SARA-U2 series - System Integration Manual A.4.2 System functions interfaces Module power-on SARA-G3 and LISA series power-on sequence is initiated in one of the ways summarized in Table 66. For more details, see section 1.6.1 or to the relative System Integration Manual of the module [7], [8].
SARA-G3 and SARA-U2 series - System Integration Manual A.4.3 Antenna interface RF interface for Tx/Rx antenna The same compatible external circuit can be implemented for SARA and LISA series ANT pin even if there are some differences in the operating bands frequency ranges, as summarized in Figure 98.
SARA-G3 and SARA-U2 series - System Integration Manual Antenna detection interface An external application circuit can be implemented on the application device integrating SARA-G340 / SARA-G350 modules to provide antenna detection functionality, with a proper connection between the ANT_DET pin and the ANT pin, as described in section 2.4.2. LISA-U modules are equipped with internal circuit for antenna detection support. SARA-G300, SARA-G310 and LISA-C2 series modules do not support antenna detection. A.4.
SARA-G3 and SARA-U2 series - System Integration Manual USB interface SARA-G3 modules do not provide a USB interface such as is available on LISA-U modules (High-Speed USB 2.0 for AT command, data communication, FW upgrade over AT or using the u-blox EasyFlash tool, and for Trace log capture) and on LISA-C2 modules (Full-Speed USB 2.0 for AT command, Data communication, FW upgrade).
SARA-G3 and SARA-U2 series - System Integration Manual A.4.7 GPIO pins The same compatible external circuit can be implemented for SARA-G340 / SARA-G350 and LISA series: four 1.8 V GPIOs are provided by SARA-G340 / SARA-G350 modules, providing the same functionalities as LISA series modules except Module Status and Operating Mode Indications. The SIM_DET pin provides the SIM detection function on SARA modules rather than the GPIO5 pin as on LISA-U series modules.
SARA-G3 and SARA-U2 series - System Integration Manual Pin Name N° SARA-G3 series EXT32K 31 32K_OUT N° LISA-C2 series LISA-U1 series LISA-U2 series SARA-G300/SARA-G310: 32 kHz input for RTC & low power idle mode SARA-G340/SARA-G350: Not Available: Internal 32 kHz for RTC & low power idle mode Not Available: Internal reference for low power idle mode Not Available: Internal 32 kHz for RTC & low power idle mode Not Available: Internal 32 kHz for RTC & low power idle mode 24 SARA-G300/SARA-G310
SARA-G3 and SARA-U2 series - System Integration Manual Pin Name N° SARA-G3 series N° LISA-C2 series LISA-U1 series LISA-U2 series SPI_MISO Not Available 57 Not Available SPI_SRDY Not Available 58 Not Available SPI_MRDY Not Available 59 Not Available 1.8 V, Data output Driver strength: 2.5 mA 1.8 V, Flow ctrl output Driver strength: 4 mA 1.8 V, Flow ctrl input Inner pull-down: 55 μA 1.8 V, Data output Driver strength: 6 mA 1.8 V, Flow ctrl output Driver strength: 6 mA 1.
SARA-G3 and SARA-U2 series - System Integration Manual Pin Name N° SARA-G3 series N° LISA-C2 series LISA-U1 series LISA-U2 series I2S1_TXD Not Available 40 Not Available Not Available I2S1_CLK Not Available 53 Not Available Not Available I2S1_RXD Not Available 39 Not Available Not Available 1.8 V, Data In PCM / Normal I2S mode Inner pull-down: 150 μA LISA-U200-00S: N.A. 1.8 V, Word align. In/Out Configurable frequency Inner pull-down: 150 μA Driver strength: 1 mA LISA-U200-00S: N.A.
SARA-G3 and SARA-U2 series - System Integration Manual Pin Name N° SARA-G3 series N° LISA-C2 series LISA-U1 series LISA-U2 series GPIO9 Not Available 54 Not Available Not Available GPIO10 Not Available 55 Not Available Not Available GPIO11 Not Available 56 Not Available Not Available GPIO12 Not Available 57 Not Available Not Available 1.8 V, configurable GPIO Default: I2S1_WA Driver strength: 1 mA Inner pull-down: 150 μA 1.
SARA-G3 and SARA-U2 series - System Integration Manual B Migration between SARA-G3 and SARA-U2 B.
SARA-G3 and SARA-U2 series - System Integration Manual B.2 Pin-out comparison between SARA-G3 and SARA-U2 SARA-G3 SARA-U2 Pin No Pin Name Description Pin Name Description 1 GND Ground GND Ground 2 V_BCKP RTC Supply I/O Output characteristics: 2.3 V typ, 2 mA max Input op. range: 1.0 V – 2.4 V V_BCKP RTC Supply I/O Output characteristics: 1.8 V typ, 3 mA max Input op. range: 1.0 V – 1.9 V 3 GND Ground GND Ground 4 V_INT Interfaces Supply Out Output characteristics: 1.
SARA-G3 and SARA-U2 series - System Integration Manual SARA-G3 SARA-U2 Pin No Pin Name Description Pin Name Description Remarks for migration 25 GPIO4 / RSVD 1.8 V GPIO / Reserved Default: GNSS RTC sharing Driver strength: 6 mA Internal pull-down: ~35 k GPIO4 1.8 V GPIO Default: GNSS RTC sharing Driver strength: 6 mA Internal pull-down: ~9 k No functional difference 26 SDA / RSVD I2C Data I/O / Reserved 1.8 V, open drain Driver strength: 3 mA SDA I2S Data I/O 1.
SARA-G3 and SARA-U2 series - System Integration Manual B.3 Schematic for SARA-G3 and SARA-U2 integration Figure 100 shows an example of schematic diagram where a SARA-G3 or SARA-U2 series module can be integrated into the same application board, using all the available interfaces and functions of the modules. The different mounting options for the external parts are highlighted in different colors as described in the legend, according to the interfaces supported by the relative modules.
SARA-G3 and SARA-U2 series - System Integration Manual C Glossary 3GPP 3rd Generation Partnership Project ADC Analog to Digital Converter AP Application Processor AT AT Command Interpreter Software Subsystem, or attention CS Coding Scheme CSD Circuit Switched Data CTS Clear To Send DC Direct Current DCD Data Carrier Detect DCE Data Communication Equipment DCS Digital Cellular System DDC Display Data Channel interface DL Down-link (Reception) DRX Discontinuous Reception DSP Digi
SARA-G3 and SARA-U2 series - System Integration Manual 2 Inter-Integrated Circuit interface 2 Inter IC Sound interface IC IS IP Internet Protocol LCC Leadless Chip Carrier LDO Low-Dropout LGA Land Grid Array LNA Low Noise Amplifier M2M Machine-to-Machine MCS Modulation Coding Scheme N/A Not Applicable N.A.
SARA-G3 and SARA-U2 series - System Integration Manual Related documents [1] u-blox SARA-G3 series Data Sheet, Docu No UBX-13000993 [2] [3] u-blox SARA-U2 series Data Sheet, Docu No UBX-13005287 u-blox AT Commands Manual, Docu No UBX-13002752 [4] u-blox LISA-C200 series Data Sheet, Docu No UBX-13000623 [5] [6] u-blox LISA-U1 series Data Sheet, Docu No UBX-13002048 u-blox LISA-U2 series Data Sheet, Docu No UBX-13001734 [7] u-blox LISA-C200 & FW75-C200/D200 System Integration Manual, Docu No UBX-130
SARA-G3 and SARA-U2 series - System Integration Manual [31] [32] SIM Access Profile Interoperability Specification, Revision V11r00, http://www.bluetooth.org u-blox eCall / ERA-GLONASS Application Note, Docu No UBX-13001924 [33] BS EN 16062:2011 – Intelligent transport systems – eSafety – eCall high level application requirements [34] [35] ETSI TS 122 101 V8.7.0 – Service aspects; Service principles (3GPP TS 22.101 v.8.7.0 Rel.
SARA-G3 and SARA-U2 series - System Integration Manual Revision history Revision Date Name Status / Comments - 30-Oct-2012 sses Initial release 1 28-Mar-2013 sses Updated status to Advance Information. Updated suggested paste mask, current consumption description, voice-band processing system block diagram, DDC (I2C) application circuit for 3V u-blox GPS/GNSS receivers. 2 12-Apr-2013 lpah Updated status to Preliminary. (Last revision with old doc number, GSM.
SARA-G3 and SARA-U2 series - System Integration Manual Contact For complete contact information visit us at www.u-blox.com. u-blox Offices North, Central and South America u-blox America, Inc. Phone: E-mail: +1 703 483 3180 info_us@u-blox.com Regional Office West Coast: Phone: +1 408 573 3640 E-mail: info_us@u-blox.com Headquarters Europe, Middle East, Africa Asia, Australia, Pacific u-blox AG Phone: E-mail: Support: Phone: E-mail: Support: +41 44 722 74 44 info@u-blox.com support@u-blox.
