Ublox LISA-U2 Series System Integration Manual
  1. Manuals
  2. Brands
  3. Ublox Manuals
  4. Control Unit
  5. LISA-U2 Series
  6. System integration manual

Ublox LISA-U2 Series System Integration Manual

3.75g hspa / hspa+ cellular modules
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
LISA-U2 series
3.75G HSPA / HSPA+ cellular modules
System integration manual
Abstract
This document describes the features and the system integration of LISA-U2 series HSPA+ cellular
modules. These modules are complete and cost efficient 3.75G solutions offering up to six-band
HSDPA/HSUPA and quad-band GSM/EGPRS voice and/or data transmission technology in a
compact form factor.
UBX-13001118 - R27
C1-Public
www.u-blox.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LISA-U2 Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Ublox LISA-U2 Series

Summary of Contents for Ublox LISA-U2 Series

  • Page 1 System integration manual Abstract This document describes the features and the system integration of LISA-U2 series HSPA+ cellular modules. These modules are complete and cost efficient 3.75G solutions offering up to six-band HSDPA/HSUPA and quad-band GSM/EGPRS voice and/or data transmission technology in a compact form factor.

  • Page 2: Document Information

    LISA-U2 series - System integration manual Document information Title LISA-U2 series Subtitle 3.75G HSPA / HSPA+ cellular modules Document type System integration manual Document number UBX-13001118 Revision and date 17-May-2021 Disclosure restriction C1-Public This document applies to the following products:...
  • Page 3 LISA-U2 series - System integration manual Product name Type number Modem version Application version PCN reference Product status LISA-U260 LISA-U260-01S-02 22.61 A01.02 UBX-TN-12061 Obsolete LISA-U260-01S-03 22.61 A01.05 UBX-17048820 End of life LISA-U260-02S-02 22.90 A01.02 UBX-14042086 End of life LISA-U260-02S-03 22.90 A01.04...

  • Page 4: Table Of Contents

    LISA-U2 series - System integration manual Contents Document information ..........................2 Contents ................................4 System description ..........................7 1.1 Overview ................................ 7 1.2 Architecture ..............................9 1.2.1 Functional blocks ..........................9 1.3 Pin-out .................................11 1.4 Operating modes ............................15 1.5 Power management ..........................17 1.5.1 Power supply circuit overview ......................17...
  • Page 5 2.4.4 Antenna detection functionality ....................138 2.5 ESD guidelines ............................139 2.5.1 ESD immunity test overview ....................... 139 2.5.2 ESD immunity test of u-blox LISA-U2 series reference designs ......... 140 2.5.3 ESD application circuits ....................... 141 Features description ........................144 3.1 Network indication ..........................
  • Page 6 A.1 Checklist for migration ......................... 167 A.2 Software migration ..........................168 A.2.1 Software migration from LISA-U1 series to LISA-U2 series modules ........ 168 A.3 Hardware migration ..........................168 A.3.1 Hardware migration from LISA-U1 series to LISA-U2 series modules ....... 168 A.3.2 Pin-out comparison LISA-U1 series vs.

  • Page 7: System Description

    • GSM CS data up to 9.6 kbit/s DL/UL supported in transparent/non transparent mode Table 1: LISA-U2 series UMTS/HSDPA/HSUPA and GSM/GPRS/EDGE characteristics Operation modes I to III are supported on GSM/GPRS networks, while allowing users to define their preferred service from GSM to GPRS. Paging messages for GSM calls may be monitored (optional) during GPRS data transfer in non-coordinating NOM II-III.
  • Page 8 2G Transmission and Receiving: LISA-U2 series modules implement GPRS/EGPRS multislot class 12. GPRS and EGPRS multislot classes determine the maximum number of timeslots available for upload and download and thus the speed at which data can be transmitted and received.

  • Page 9: Architecture

    Power on V_BCKP (RTC) Power Management Unit External reset V_INT (I/O) Figure 1: LISA-U2 series block diagram (for available options see Table 1.2.1 Functional blocks LISA-U2 modules consist of the following internal functional blocks: RF section, Baseband and Power Management Unit section.
  • Page 10 • HSDPA → QPSK / 16-QAM • HSUPA → QPSK / 16-QAM LISA-U2 series Baseband and Power Management Unit section Another shielding box of LISA-U2 modules includes all the digital circuitry and the power supplies, basically the following functional blocks: •...

  • Page 11: Pin-Out

    LISA-U2 series - System integration manual 1.3 Pin-out Table 3 details the pin-out of the LISA-U2 modules, with pins grouped by function. Function Pin Module Description Remarks Power 61, 62, 63 Module supply Clean and stable supply is required: low ripple input and low voltage drop must be guaranteed.
  • Page 12 LISA-U2 series - System integration manual Function Pin Module Description Remarks SPI_MISO SPI Data Line Module Output: module runs as SPI local device. Output Shift data on rising clock edge (CPHA=1). Latch data on falling clock edge (CPHA=1). Idle high.
  • Page 13 LISA-U2 series - System integration manual Function Pin Module Description Remarks GPIO GPIO1 GPIO See section 1.12 GPIO2 GPIO See section 1.12 GPIO3 GPIO See section 1.12 GPIO4 GPIO See section 1.12 GPIO5 GPIO See section 1.12 GPIO6 GPIO See section 1.12...
  • Page 14 LISA-U2 series - System integration manual Function Pin Module Description Remarks Digital I2S_CLK First I2S clock Check device specifications to ensure Audio compatibility with module supported modes. See section 1.11. I2S_RXD First I2S receive Internal active pull-down to GND enabled.

  • Page 15: Operating Modes

    LISA-U2 series - System integration manual 1.4 Operating modes LISA-U2 series modules have several operating modes. The operating modes are defined in Table 4 and described in details in Table 5, providing general guidelines for operation. General Status Operating Mode...
  • Page 16 LISA-U2 series - System integration manual Operating mode Description Transition between operating modes Active The module is ready to accept data When the module is switched on by an appropriate power-on event signals from an external device (see 1.6.1), the module enters active mode from not-powered or unless power saving configuration is power-off mode.

  • Page 17: Power Management

    1.5 Power management 1.5.1 Power supply circuit overview LISA-U2 series modules feature a power management concept optimized for the most efficient use of the supplied power. This is achieved by hardware design that uses a power efficient circuit topology (Figure 3), and by power management software that controls the module’s power saving mode.

  • Page 18: Module Supply (Vcc)

    Real Time Clock can be externally supplied via the V_BCKP pin (see section 1.5.4). When a 1.8 V or a 3 V SIM card type is connected, LISA-U2 series modules automatically supply the SIM card via the VSIM pin. Activation and deactivation of the SIM interface with automatic voltage switch from 1.8 to 3 V is implemented, in accordance with the ISO-IEC 7816-3 specifications.
  • Page 19 3 seconds after the start of the module switch-on sequence. When LISA-U2 series modules are in operation, the voltage provided to VCC pins can exceed the normal operating range limits but must be within the extended operating range limits specified in the LISA-U2 series data sheet [1].
  • Page 20 1.5.2.1 VCC application circuits LISA-U2 series modules must be supplied through the VCC pins by a clean DC power supply, which can be selected according to the application requirements (see Figure 5) between the different possible supply sources types, the most common ones of which are the following: •...
  • Page 21 DC supply systems can result as being mutually exclusive. The usage of a regulator or a battery not able to withstand the maximum VCC peak current consumption stated in the LISA-U2 series data sheet is generally not recommended. However, if...
  • Page 22 LISA-U2 series - System integration manual Figure 6 and the components listed in Table 7 show an example of a high reliability power supply circuit, where the module VCC is supplied by a step-down switching regulator capable of delivering 2.5 A current pulses with low output ripple and with fixed switching frequency in PWM mode operation greater than 1 MHz.
  • Page 23 LISA-U2 series - System integration manual Figure 7 and the components listed in Table 8 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 2.5 A current pulses, transforming a 12 V supply input.
  • Page 24 LISA-U2 series - System integration manual Low Drop-Out (LDO) linear regulator The characteristics of the LDO linear regulator connected to the VCC pins should meet the following requirements: • Power capabilities: the LDO linear regulator with its output circuit must be capable of providing a proper voltage value to the VCC pins and of delivering 2.5 A current pulses with 1/8 duty cycle.
  • Page 25 LISA-U2 series - System integration manual Rechargeable Li-Ion or Li-Pol battery Rechargeable Li-Ion or Li-Pol batteries connected to the VCC pins should meet the following requirements: • Maximum pulse and DC discharge current: the rechargeable Li-Ion battery with its output circuit must be capable of delivering 2.5 A current pulses with 1/8 duty-cycle to the VCC pins and must...
  • Page 26 Table 10: Suggested parts for VCC circuit close to module’ pins; highly recommended when using an integrated antenna External battery charging application circuit LISA-U2 series modules do not have an on-board charging circuit. An example of a battery charger design, suitable for applications that are battery powered with a Li-Ion (or Li-Polymer) cell, is provided...
  • Page 27 LISA-U2 series - System integration manual VCC supply input of LISA-U2 series module. Battery charging is completely managed by the STMicroelectronics L6924U Battery Charger IC that, from a USB power source (5.0 V typ.), charges as a linear charger the battery, in three phases: •...

  • Page 28: Current Consumption Profiles

    1.5.3 Current consumption profiles During operation, the current drawn by the LISA-U2 series modules through the VCC pins can vary by several orders of magnitude. This ranges from the high peak of current consumption during GSM transmitting bursts at maximum power level in 2G connected mode, to a continuous high current drawn in UMTS connected mode, to the low current consumption during power saving in idle mode.
  • Page 29 TDMA. If the module is in GPRS connected mode in the DCS 1800 or in the PCS 1900 band, the current consumption figures are lower than in the GSM 850 or in the E-GSM 900 band, due to 3GPP transmitter output power specifications (see the LISA-U2 series data sheet [1]). Figure 12 reports the current consumption profiles in GPRS class 12 connected mode, in the GSM 850 or in the E-GSM 900 band, with 4 slots used to transmit and 1 slot used to receive.
  • Page 30 (approximately 250 mW or 24 dBm), the current drawn by the module at the VCC pins is in the order of continuous 500-800 mA (see LISA-U2 series data sheet for detailed values). Even at lowest output RF power (approximately 0.01 µW or -50 dBm), the current still remains in the order of 200 mA...
  • Page 31 LISA-U2 series - System integration manual 1.5.3.3 2G and 3G cyclic idle/active mode (power saving enabled) The power saving configuration is disabled by default, but it can be enabled using the appropriate AT command (see the u-blox AT commands manual [2], AT+UPSV command). When power saving is enabled, the module automatically enters idle mode whenever possible.
  • Page 32 LISA-U2 series - System integration manual 1.5.3.4 2G and 3G fixed active mode (power saving disabled) Power saving configuration is disabled by default, or it can be disabled using the appropriate AT command (see the u-blox AT commands manual [2], AT+UPSV command). When power saving is disabled, the module does not automatically enter idle mode whenever possible: the module remains in active mode.

  • Page 33: Rtc Supply (V_Bckp)

    V_BCKP voltage is within its valid range (specified in the input characteristics of the supply/power pins table in the LISA-U2 series data sheet [1]). The RTC timing is normally used to set the wake-up interval during idle mode periods between network paging, but is able to provide programmable alarm functions by means of the internal 32.768 kHz clock.
  • Page 34 C [µF] = (Current_Consumption [µA] x T [s]) / Voltage_Drop [V] = 2.50 x T [s] for LISA-U2 series For example, a 100 µF capacitor (such as the Murata GRM43SR60J107M) can be placed at V_BCKP to provide a long buffering time. This capacitor will hold V_BCKP voltage within its valid range for around 50 s at +25 °C, after the VCC supply is removed.
  • Page 35 “GNSS supply enable” function provided by the GPIO2 of the cellular module. In this case the V_BCKP supply output of the LISA-U2 series cellular module can be connected to the V_BCKP backup supply input pin of the GNSS receiver to provide the supply for the GNSS real time clock and backup RAM when the VCC supply of the cellular module is within its operating range and the VCC supply of the GNSS receiver is disabled.

  • Page 36: Interface Supply (V_Int)

    Do not apply loads which might exceed the limit for the maximum available current from the V_INT supply, as this can cause malfunctions in internal circuitry supplies to the same domain. The detailed electrical characteristics are described in the LISA-U2 series data sheet [1]. ☞...

  • Page 37: System Functions

    1.6 System functions 1.6.1 Module power-on When the LISA-U2 series modules are in the not-powered mode (i.e. switched off with the VCC module supply not applied), they can be switched on by: • Rising edge on the VCC pin to a valid voltage as the module supply (i.e. applying module supply) •...
  • Page 38 V_BCKP pin (see the V_BCKP input characteristics of the supply/power pins table in the LISA-U2 series data sheet [1]), the V_BCKP supply cannot be used to bias the pull-up resistor: the supply rail of the application processor or the VCC supply could be used, but this will increase the V_BCKP (RTC supply) current consumption when the module is in not-powered mode (VCC supply not present).
  • Page 39 RESET_N pin (specified in the RESET_N pin characteristics table in the LISA-U2 series data sheet [1]). To avoid an unwanted power-on or reset of the module, make sure to fix the proper level at the RESET_N input pin in all possible scenarios.
  • Page 40 The internal reset signal is held low by the integrated power management unit: the baseband processor core and all the digital pins of the modules are held in reset state, which is reported for each pin of the module in the pin description table of the LISA-U2 series data sheet [1]. •...

  • Page 41: Module Power-Off

    (V_INT) is switched off by the module. An abrupt hardware shutdown occurs on LISA-U2 series modules when a low level is applied to the RESET_N pin. In this case, the current parameter settings are not saved in the module’s non-volatile memory and a clean network detach is not performed.
  • Page 42 The Internal Reset signal is not available on a module pin, but the application can monitor the V_INT pin to sense the end of the LISA-U2 series power-off sequence. ☞ The duration of each phase in the LISA-U2 series modules’ switch-off routines can largely vary from the values reported in Figure 19 (e.g.

  • Page 43: Module Reset

    The V_INT interfaces supply is enabled and each digital pin is set to its internal reset state (detailed in the pin description table in the LISA-U2 series data sheet [1]), the V_BCKP supply and the RTC block are enabled.
  • Page 44 RESET_N pin (specified in the RESET_N pin characteristics table in the LISA-U2 series data sheet [1]). To avoid unwanted resets of the module, make sure to fix the proper level at the RESET_N input pin in all possible scenarios.

  • Page 45: Rf Connection

    LISA-U2 series - System integration manual 1.7 RF connection The ANT pin, provided by all LISA-U2 modules, represents the main RF input/output used to transmit and receive the 2G and 3G RF signal: the main antenna must be connected to this pad. The ANT pin has a nominal characteristic impedance of 50 ...

  • Page 46: U)Sim Interface

    (for more details, see the “simind” value of the <descr> parameter of +CIND and +CMER commands in the u-blox AT commands manual [2]). All the LISA-U2 series modules provide the additional function “SIM card hot insertion/removal” on the GPIO5 pin, which can be enabled using the AT+UDCONF=50 command.

  • Page 47: U)Sim Application Circuits

    LISA-U2 series - System integration manual 1.8.1 (U)SIM application circuits 1.8.1.1 SIM cards, SIM connectors and SIM chips selection The ISO/IEC 7816, the ETSI TS 102 221 and the ETSI TS 102 671 specifications define the physical, electrical and functional characteristics of Universal Integrated Circuit Cards (UICC) which contain the Subscriber Identification Module (SIM) integrated circuit that securely stores all the information needed to identify and authenticate subscribers over the GSM network.
  • Page 48 LISA-U2 series - System integration manual 1.8.1.2 Single SIM card without detection A removable SIM card placed in a SIM card holder must be connected to the SIM card interface of LISA-U2 modules as described in Figure 21, where the optional SIM detection feature is not...
  • Page 49 LISA-U2 series - System integration manual 1.8.1.3 Single SIM chip A solderable SIM chip (M2M UICC form factor) must be connected the SIM card interface of LISA-U2 modules as described in Figure 22 when the optional SIM detection feature is not implemented (see...
  • Page 50 LISA-U2 series - System integration manual Follow these guidelines connecting the module to a SIM connector implementing SIM presence detection: • Connect the UICC / SIM contacts C1 (VCC) to the VSIM pin of the module • Connect the UICC / SIM contact C7 (I/O) to the SIM_IO pin of the module •...
  • Page 51 SIM per time to the SIM interface of the modules as described in Figure 24. All LISA-U2 series modules support SIM hot insertion / removal on the GPIO5 pin: if the feature is enabled using the specific AT commands, the switch from first SIM to the second SIM can be cleanly done when a Low logic level is present on the GPIO5 pin (‘SIM not inserted’...
  • Page 52 LISA-U2 series - System integration manual • Limit capacitance and series resistance on each SIM signal (SIM_CLK, SIM_IO, SIM_RST) to match the requirements for the SIM interface (27.7 ns is the maximum allowed rise time on the SIM_CLK line, 1.0 µs is the maximum allowed rise time on the SIM_IO and SIM_RST lines).

  • Page 53: Serial Communication

    LISA-U2 series - System integration manual 1.9 Serial communication LISA-U2 modules provide the following serial communication interfaces where the AT command interface and Packet-Switched / Circuit-Switched Data communication are concurrently available: • One asynchronous serial interface (UART) that provides complete RS-232 functionality conforming to the ITU-T V.24 Recommendation [3], with a limited data rate...

  • Page 54: Serial Interfaces Configuration

    LISA-U2 series - System integration manual 1.9.1 Serial interfaces configuration UART, USB and SPI/IPC serial interfaces are available through the AT command interface and for Packet-Switched / Circuit-Switched Data communication. The serial interfaces are configured as described in Table 26 (for information about further settings, see the u-blox AT commands manual [2]).

  • Page 55: Asynchronous Serial Interface (Uart)

    LISA-U2 series - System integration manual 1.9.2 Asynchronous serial interface (UART) The UART interface is a 9-wire unbalanced asynchronous serial interface that provides AT commands interface, PSD and CSD data communication. The module firmware can be upgraded over the UART interface using the u-blox EasyFlash tool or by...
  • Page 56 LISA-U2 series - System integration manual 1.9.2.1 UART features All flow control handshakes are supported by the UART interface and can be set by appropriate AT commands (see the u-blox AT commands manual [2], &K, +IFC, \Q AT commands): hardware flow control (RTS/CTS), software flow control (XON/XOFF), or none flow control.
  • Page 57 18, each pin is first tri-stated and then is set to its specific internal reset state that is reported in the pin description table in the LISA-U2 series data sheet [1]. 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.
  • Page 58 LISA-U2 series - System integration manual TxD signal behavior The module data input line (TxD) is set by default to OFF state (high level) at UART initialization. The TxD line is then held by the module in the OFF state if the line is not activated by the DTE: an active pull-up is enabled inside the module on the TxD input.
  • Page 59 LISA-U2 series - System integration manual If AT+UPSV=2 is set and HW flow control is disabled, the RTS line is monitored by the module to manage the power saving configuration: • When an OFF-to-ON transition occurs on the RTS input line, the UART is enabled and the module is forced to active mode: after 20 ms from the transition the switch is completed and data can be received without loss.
  • Page 60 LISA-U2 series - System integration manual ON state, then answers with a CONNECT to confirm the ATD*99 command. The DCD ON is not related to the context activation but with the data mode. • CSD data call: To establish a data call, the DTE can send the ATD<number> command to the module which sets an outgoing data call to a remote modem (or another data module).
  • Page 61 The RI line can additionally notify all the URCs and all the incoming data (PPP, Direct Link, sockets, FTP) on all LISA-U2 series modules except for the “01” product version, if the feature is enabled by the proper AT command (see the u-blox AT commands manual [2], AT+URING command): the RI line...
  • Page 62 LISA-U2 series - System integration manual The different power saving configurations that can be set by the +UPSV AT command are described in detail in the following subsections. The UART interface communication behaviors for the different power saving configurations, in relation to the HW flow control settings and RTS input line status, are...
  • Page 63 When the DTE issues the AT+UPSV=1 command, the UART is immediately disabled. Afterwards, the UART of LISA-U2 series modules is periodically enabled to receive or send data and, if data has not been received or sent over the UART, the interface is automatically disabled whenever possible according to the timeout configured by the second parameter of the +UPSV AT command.
  • Page 64 LISA-U2 series - System integration manual • 3G: the UART is asynchronously enabled to paging receptions, as the UART is enabled for ~20 ms, and then, if data are not received or sent, the UART is disabled for 2.5 s, and afterwards the interface is enabled again •...
  • Page 65 LISA-U2 series - System integration manual AT+UPSV=3: power saving enabled and controlled by the DTR line The AT+UPSV=3 configuration can be enabled regardless of the flow control setting on UART. In particular, the HW flow control can be enabled (AT&K3) or disabled (AT&K0) on UART during this configuration.
  • Page 66 LISA-U2 series - System integration manual Figure 29 shows the case where the module UART is disabled and only a wake-up is forced. In this scenario the only character sent by the DTE is the wake-up character; as a consequence, the DCE module UART is disabled when the timeout from last data received expires (2000 frames without data reception, as the default case).
  • Page 67 , a dummy “AT” would affect the data communications. Additional considerations The LISA-U2 series modules are forced to stay in active mode if the USB is connected and not suspended, and therefore the AT+UPSV=1, AT+UPSV=2 or AT+UPSV=3 settings are overruled, but they still have effect on the UART behavior: they configure the UART interface power saving, so that the UART is enabled / disabled according to the AT+UPSV=1, AT+UPSV=2 or AT+UPSV=3 settings.
  • Page 68 LISA-U2 series - System integration manual 1.9.2.4 UART application circuits Providing the full RS-232 functionality (using the complete V.24 link) If RS-232 compatible signal levels are needed to provide full RS-232 (9 lines) functionality, two different external voltage translators (e.g.
  • Page 69 LISA-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: •...
  • Page 70 LISA-U2 series - System integration manual If only the TxD, RxD, RTS, CTS and DTR lines are provided (as implemented in Figure 33 and in Figure 34) and if HW flow control is enabled (AT&K3, default setting), the power saving can be activated as...
  • Page 71 LISA-U2 series - System integration manual If a 3.0 V application processor is used, appropriate unidirectional voltage translators must be provided using the module V_INT output as a 1.8 V supply, as described in Figure Application processor LISA-U2 series (3.0V DTE) (1.8V DCE)
  • Page 72 LISA-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. Figure 37 describes the circuit that should be implemented as if a 1.8 V application processor is used.
  • Page 73 LISA-U2 series - System integration manual ☞ 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 1.9.2.3...

  • Page 74: Usb Interface

    (see the LISA–U2 series data sheet [1]). Neither the USB interface, nor the whole module is supplied by the VUSB_DET input: the VUSB_DET senses the USB supply voltage and absorbs only a few microamperes. LISA-U2 series modules can provide the following functions over the USB interface: • CDC-ACM for AT commands and data communication •...
  • Page 75 (left side) summarizes the USB end-points available with the default USB profile configuration. The USB interface of the LISA-U2 series can be configured by the AT+UUSBCONF command (for more details, see the u-blox AT commands manual [2]) to select a different set of USB functions, available...
  • Page 76 Transfer: Bulk EndPoint Transfer: Bulk Figure 39: LISA-U2 series end-points summary for the default and alternative USB profile configuration ☞ For more details on the configuration of the USB interface of LISA-U2 modules, see the u-blox AT commands manual [2], +UUSBCONF AT command.
  • Page 77 LISA-U2 series - System integration manual The module firmware can be upgraded over the USB interface using the u-blox EasyFlash tool or by means of an AT command (for more details, see section 3.12 and the Firmware update application note [16]).
  • Page 78 LISA-U2 series - System integration manual 1.9.3.3 USB application circuit Since the module acts as a USB device, the USB supply (5.0 V typ.) must be provided to VUSB_DET by the connected USB host. The USB interface is enabled only when a valid voltage as a USB supply is detected by the VUSB_DET input.

  • Page 79: Spi Interface

    LISA-U2 series - System integration manual 1.9.4 SPI interface SPI is a host-local device protocol: the module runs as an SPI local device, i.e. it accepts AT commands on its SPI interface without any specific configuration. The SPI-compatible synchronous serial interface cannot be used for the FW upgrade.
  • Page 80 LISA-U2 series - System integration manual 1.9.4.1 IPC communication protocol overview The module runs as an SPI local device, i.e. it accepts AT commands on its SPI interface without any specific configuration. The SPI device shall look for all upper SW layers like any other serial device. This means that LISA-U2 modules emulate all serial logical lines: the transmission and the reception of the data are similar to an asynchronous device.
  • Page 81 If power saving is enabled by an AT command (AT+UPSV=1, AT+UPSV=2 or AT+UPSV=3), the LISA- U2 module automatically enters idle mode whenever possible, if the host indicates that it is not ready to transmit or receive by the SPI_MRDY signal, or if the LISA-U2 series module itself does not transfer data.
  • Page 82 LISA-U2 series - System integration manual Host-initiated transfer with a sleeping local device SPI_MRDY SPI_SRDY Header Data Header DATA EXCHG Figure 43: Data transfer initiated by the application processor (host) with a sleeping LISA-U2 module (local device) When the local device is sleeping (idle mode), the following actions happen: The host wakes the local deviceby setting the SPI_MRDY line active.
  • Page 83 MOSI SPI_MOSI MISO SPI_MISO SCLK SPI_SCLK Interrupt SPI_SRDY GPIO SPI_MRDY Figure 45: IPC / SPI Interface application circuit connecting LISA-U2 series 1.8V SPI local device to a 1.8V SPI host UBX-13001118 - R27 System description Page 83 of 183 C1-Public...

  • Page 84: Mux Protocol (3Gpp Ts 27.010)

    Unidirectional Voltage Translator SN74AVC2T245 - Texas Instruments Table 36: Parts for IPC / SPI Interface application circuit connecting LISA-U2 series 1.8V SPI local device to a 3.0 V SPI host ☞ If the SPI/IPC interface is not used, the SPI_MOSI, SPI_MISO, SPI_SCLK, SPI_MRDY, SPI_SRDY pins can be left unconnected.
  • Page 85 LISA-U2 series - System integration manual channel. The multiplexer protocol can be used on one serial interface (UART or SPI) at a time. Each session consists of a stream of bytes transferring various kinds of data such as SMS, CBS, PSD, GNSS, and AT commands in general.

  • Page 86: Ddc (I2C) Interface

    The DDC (I2C) interface of all LISA-U2 series modules can be used to communicate with u-blox GNSS receivers and with external I2C devices as an audio codec: the cellular module acts as an I2C host which can communicate to more I2C local devices as allowed by the I2C bus specifications [8].
  • Page 87 The embedded GPS aiding features can be used only if the DDC (I2C) interface of the cellular module is connected to the u-blox GNSS receivers. The GPIO pins of the LISA-U2 series modules can handle: • GNSS receiver power-on/off (“GNSS supply enable” function provided by GPIO2) •...
  • Page 88 LISA-U2 series - System integration manual • Output / Low, to switch off the u-blox GNSS receiver, if the parameter <mode> of AT+UGPS command is set to 0 (default setting) The pin must be connected to the active-high enable pin (or the active-low shutdown pin) of the voltage regulator that supplies the u-blox GNSS receiver on the application board.
  • Page 89 LISA-U2 series - System integration manual Connection with u-blox 1.8 V GNSS receivers Figure 47 shows an application circuit for connecting a LISA-U2 cellular module to a u-blox 1.8 V GNSS receiver. • The SDA and SCL pins of the LISA-U2 cellular module are directly connected to the corresponding I2C pins of the u-blox 1.8 V GNSS receiver, with appropriate pull-up resistors connected to the...
  • Page 90 LISA-U2 series - System integration manual As an alternative to using an external voltage regulator, the V_INT supply output of LISA-U2 cellular modules can be used to supply a u-blox 1.8 V GNSS receiver of the u-blox 6 generation (or later u-blox generation).
  • Page 91 LISA-U2 series - System integration manual Connection with u-blox 3.0 V GNSS receivers Figure 48 shows an application circuit for connecting a LISA-U2 cellular module to a u-blox 3.0 V GNSS receiver: • As the SDA and SCL pins of the LISA-U2 cellular module are not tolerant up to 3.0 V, the connection to the related I2C pins of the u-blox 3.0 V GNSS receiver must be provided using a...

  • Page 92: Audio Interface

    LISA-U2 series modules can act as I2S host or I2S local device . In host mode, the word alignment and clock signals of the I2S digital audio interface are generated by the module. In local device mode, these signals must be generated by the remote device.
  • Page 93 LISA-U2 series - System integration manual The I2S interface can be set to two modes using the <I2S_mode> parameter of the AT+UI2S command: • PCM mode • Normal I2S mode The I2S interface can be set to two configurations, by the <I2S_host_local_device> parameter of AT+UI2S: •...

  • Page 94: I2S Interface - Pcm Mode

    LISA-U2 series - System integration manual 1.11.1 I2S interface - PCM mode Main features of the I2S interface in PCM mode: • I2S runs in PCM - short alignment mode (configurable by AT commands) • I2S word alignment signal can be configured to 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz •...

  • Page 95: I2S Interface Application Circuits

    Because, in general, any external digital audio device compliant to the configuration of the digital audio interface of the cellular module can be used with LISA-U2 series modules, an appropriate specific application circuit must be implemented and configured according to the particular external digital audio device or audio codec used and according to the application requirements.
  • Page 96 An I2S digital audio interface of the LISA-U2 series modules that acts as an I2S host is connected to the digital audio interface of the external audio codec (that acts as an I2S local device). The first I2S interface can be used as well as the second I2S interface of the cellular module.
  • Page 97 LISA-U2 series - System integration manual LISA-U2 series 1 V8 V_INT Audio Codec IRQn MICBIAS Microphone Connector EMI1 MICLP EMI2 MICLN I2S1 _TXD SDIN C1 2 C1 1 I2S1 _RXD SDOUT MICGND I2S1 _CLK BCLK Speaker I2S1 _WA LRCLK Connector...

  • Page 98: Voiceband Processing System

    These blocks are connected by buffers (circular buffer and voiceband sample buffer) and sample rate converters (for 8 / 16 to 47.6 kHz conversion). The voiceband audio processing implemented in the DSP core of LISA-U2 series modules is summarized in...

  • Page 99: General Purpose Input/Output (Gpio)

    16 bits, little endian, mono 1.12 General Purpose Input/Output (GPIO) LISA-U2 series modules provide up to 14 pins (GPIO1-14) which can be configured as general purpose input or output, or can be configured to provide special functions via u-blox AT commands (for further details, see the u-blox AT commands manual [2], +UGPIOC, +UGPIOR, +UGPIOW, +UGPS, +UGPRF, +USPM).
  • Page 100 LISA-U2 series - System integration manual The pin configured to provide the “GNSS supply enable” function must be connected to the active- high enable pin (or the active-low shutdown pin) of the voltage regulator that supplies the u-blox GNSS receiver on the application board.
  • Page 101 LISA-U2 series - System integration manual All LISA-U2 series modules provide the additional function “SIM card hot insertion/removal” on the GPIO5 pin, which can be enabled using the AT+UDCONF=50 command (for more details, see the u-blox AT commands manual [2]).
  • Page 102 LISA-U2 series - System integration manual Module operating mode indication: The GPIO14 and GPIO5 pins can be configured to indicate module operating mode (idle mode versus active or connected modes), properly setting the parameter <gpio_mode> of AT+UGPIOC command to 11.
  • Page 103 LISA-U2 series - System integration manual The pin can be connected on the application board to an input pin of an application processor to provide a digital signal. Pad disabled: All the GPIOs can be configured in tri-state with an internal active pull-down enabled, as a not used pin, setting the parameter <gpio_mode>...
  • Page 104 LISA-U2 series - System integration manual Name Description Remarks I2S1_TXD / I2S transmit data / By default, the pin is configured as 2 I2S transmit data output. GPIO7 GPIO Can be alternatively configured by the +UGPIOC, +USPM commands as: • Output •...
  • Page 105 LISA-U2 series - System integration manual ☞ The GPIO pins’ ESD sensitivity rating is 1 kV (Human Body Model according to JESD22-A114F). Higher protection levels could be required if the lines are externally accessible on the application board. Higher protection levels can be achieved by mounting an ESD protection (e.g. EPCOS CA05P4S14THSG varistor array) on the lines connected to these pins, close to accessible points.

  • Page 106: Reserved Pins (Rsvd)

    LISA-U2 series - System integration manual Reference Description Part Number - Manufacturer SIM Card Holder CCM03-3013LFT R102 - C&K Components (or equivalent) 10 kΩ Resistor 0402 5% 0.1 W Various manufacturers 47 kΩ Resistor 0402 5% 0.1 W Various manufacturers 820 Ω...

  • Page 107: Schematic For Lisa-U2 Module Integration

    LISA-U2 series - System integration manual 1.14 Schematic for LISA-U2 module integration Figure 54 is an example of a schematic diagram where the LISA-U2 series module is integrated into an application board, using all the interfaces of the module. LISA-U2 series...

  • Page 108: Approvals

    ☞ The PICS document of the application device integrating LISA-U2 series modules must be updated from the module PICS statement if any feature stated as supported by the module in its PICS document is not implemented or disabled in the application device. For more details regarding the AT commands settings that affect the PICS, see u-blox AT commands manual [2].

  • Page 109: European Conformance Ce Mark

    EN 62368-1 EN 62311 The conformity assessment procedure for the LISA-U2 series modules, referred to in Article 17 and detailed in Annex II of the Radio Equipment Directive (2014/53/EU), has been followed. Thus, the following marking is included in the product: ⚠...

  • Page 110: Federal Communications Commission Notice

    LISA-U2 series - System integration manual 1.15.2 US Federal Communications Commission notice The Federal Communications Commission (FCC) IDs for the LISA-U2 modules are: • LISA-U200: XPYLISAU200 • LISA-U201: XPYLISAU201 • LISA-U230: XPYLISAU230 • LISA-U260: XPYLISAU200 • LISA-U270: XPYLISAU200 1.15.2.1 Safety warnings review the structure •...

  • Page 111: Innovation, Science, Economic Development Canada Notice

    LISA-U2 series - System integration manual (in 850 MHz, i.e. GSM 850 or UMTS FDD-5 band) and 4.08 dBi (in 1900 MHz, i.e. GSM 1900 or UMTS FDD-2 band) for mobile and fixed or mobile operating configurations. 1.15.2.3 Modifications The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by u-blox could void the user's authority to operate the equipment.
  • Page 112 LISA-U2 series - System integration manual ⚠ The gain of the system antenna(s) used for LISA-U230 (i.e. the combined transmission line, connector, cable losses and radiating element gain) must not exceed 4.78 dBi (in 850 MHz, i.e. GSM 850 or UMTS FDD-5 band), 7.55 dBi (in 1700 MHz, i.e. AWS or UMTS FDD-4 band) and 3.95 dBi (in 1900 MHz, i.e.

  • Page 113: Australian Regulatory Conformity

    ⚠ IMPORTANT: les fabricants d'applications portables contenant les modules LISA-U2 series doivent faire certifier leur produit final et déposer directement leur candidature pour un certificat Industrie Canada délivré par l'organisme chargé de ce type d'appareil portable. Ceci est obligatoire afin d'être en accord avec les exigences SAR pour les appareils portables.

  • Page 114: Icasa Certification

    LISA-U2 series - System integration manual 1.15.5 ICASA Certification The LISA-U200 and LISA-U270 modules have been certified by the Independent Communications Authority of South Africa (ICASA). • LISA-U200: • LISA-U270: TA-2013/1812 1.15.6 KC Certification The regulatory Korean Certification have been granted for the LISA-U200 and LISA-U270 modules.

  • Page 115: Anatel Certification

    LISA-U2 series - System integration manual 1.15.7 ANATEL Certification LISA-U200 and LISA-U201 modules are certified by the Brazilian Agency of Telecommunications (Agência Nacional de Telecomunicações in Portuguese) (ANATEL). • LISA-U200 modules ANATEL homologation number: 08241-19-05903 08241-19-05903 • LISA-U201 modules ANATEL homologation number: 4466-15-5903 4466-15-5903 1.15.8 CCC Certification...

  • Page 116: Giteki Certification

    LISA-U2 series - System integration manual 1.15.9 GITEKI Certification The LISA-U200-62S, LISA-U270-62S, LISA-U270-63S and LISA-U270-68S modules comply with Japanese Telecom [T] and Radio [R] Law and have the GITEKI mark placed on the product label. • LISA-U200-62S: T: AD120274003 R: 003-120375 •...

  • Page 117: Design-In

    LISA-U2 series - System integration manual Design-In 2.1 Design-in checklist This section provides a design-in checklist. 2.1.1 Schematic checklist The following are the most important points for a simple schematic check: DC supply must provide a nominal voltage at the VCC pin above the minimum operating range ...

  • Page 118: Layout Checklist

    LISA-U2 series - System integration manual forced low, and during the module power-on sequence (at least for 3 seconds after the start-up event), to avoid latch-up of circuits and enable a clean boot of the module. All unused pins can be left floating on the application board except the PWR_ON pin (must be ...

  • Page 119: Design Guidelines For Layout

    GPIO4 RSVD / I2S_TXD RSVD / I2S_WA USB_D- GPIO7 / I2S1 _TXD USB_D+ GPIO6 / I2S1 _RXD Figure 55: LISA-U2 series modules pin-out (top view) with ranked importance for layout design UBX-13001118 - R27 Design-In Page 119 of 183 C1-Public...
  • Page 120 LISA-U2 series - System integration manual Rank Function Pin(s) Layout Remarks RF Antenna Main RF input/output Very Important Design for 50  characteristic impedance. See section 2.2.1.1 RF input for Rx Very Important Design for 50  characteristic ANT_DIV diversity impedance.
  • Page 121 LISA-U2 series - System integration manual 2.2.1.1 RF antenna connection The ANT pin (main RF input/output) and the ANT_DIV pin (RF input for diversity receiver provided by LISA-U230 modules) are very critical in layout design. Proper transition between ANT and ANT_DIV pads and the application board must be provided,...
  • Page 122 LISA-U2 series - System integration manual 500 µm 380 µm 500 µm L1 Copper 35 µm FR-4 dielectric 270 µm L2 Copper 35 µm FR-4 dielectric 760 µm L3 Copper 35 µm FR-4 dielectric 270 µm L4 Copper 35 µm Figure 57: Example of 50 ...
  • Page 123 LISA-U2 series - System integration manual • The transmission line must be routed in a section of the PCB where minimal interference from noise sources can be expected • Route RF transmission line far from other sensitive circuits as it is a source of electromagnetic interference •...
  • Page 124 LISA-U2 series - System integration manual • Given the large burst current, VCC line is a source of disturbance for other signals. Therefore route VCC through a PCB area separated from sensitive analog signals. Typically it is good practice to interpose at least one layer of PCB ground between VCC track and other signal routing •...
  • Page 125 LISA-U2 series - System integration manual 2.2.1.3 USB signal The LISA-U2 modules include a high-speed USB 2.0 compliant interface with a maximum throughput of 480 Mbit/s (see Section 1.9.3). Signals USB_D+ / USB_D- carry the USB serial data and signaling.
  • Page 126 LISA-U2 series - System integration manual 2.2.1.4 Module grounding Good connection of the module with application board solid ground layer is required for correct RF performance. It significantly reduces EMC issues and provides a thermal heat sink for the module.
  • Page 127 LISA-U2 series - System integration manual typically accessed by the end user, it can be subjected to ESD discharges: add adequate ESD protection to protect module SIM pins near the SIM connector • Digital Audio (I2S_CLK, I2S_RX, I2S_TX, I2S_WA and I2S1_CLK, I2S1_RXD, I2S1_TXD, I2S1_WA): the I2S interface requires the same consideration regarding electro-magnetic interference as the SIM card.

  • Page 128: Footprint And Paste Mask

    The bottom layer of LISA-U2 series modules has two unprotected copper areas for GND, shown in Figure ☞...

  • Page 129: Placement

    LISA-U2 bottom side (through module view) 22.4 mm Figure 62: Signals keep-out areas on the top layer of the application board, below LISA-U2 series modules 2.2.3 Placement Optimize placement for minimum length of RF line and closer path from DC source for VCC.

  • Page 130: Thermal Guidelines

    LISA-U2 series - System integration manual 2.3 Thermal guidelines ☞ LISA-U2 module operating temperature range and module thermal parameters are specified in the LISA-U2 series data sheet [1]. The most critical condition concerning module thermal performance is the uplink transmission at maximum power (data upload or voice call in connected mode), when the baseband processor runs at full speed, radio circuits are all active and the RF power amplifier is driven to higher output RF power.
  • Page 131 Select the operating band which provides lower current consumption in the selected radio access mode (see current consumption values reported in the LISA-U2 series data sheet [1]) by means of an AT command (see the u-blox AT commands manual [2], +UBANDSEL command) •...

  • Page 132: Antenna Guidelines

    If LISA-U2 series modules are planned for use on the entire supported bands, then an antenna that supports the 824...960 MHz and the 1710…2170 MHz frequency range should be selected.
  • Page 133 LISA-U2 series - System integration manual GSM antennas are typically available as: • Linear monopole: typical for fixed applications. The antenna extends mostly as a linear element with a dimension comparable to lambda/4 of the lowest frequency of the operating band. Magnetic base may be available.

  • Page 134: Antenna Termination

    LISA-U2 series - System integration manual 2.4.1 Antenna termination The LISA-U2 modules are designed to work on a 50  load. However, real antennas have no perfect 50  load on all the supported frequency bands. Therefore the following requirements should be met...

  • Page 135: Antenna Radiation

    LISA-U2 series - System integration manual 2.4.2 Antenna radiation An indication of the antenna’s radiated power can be approximated by measuring the |S | from a target antenna to the measurement antenna, using a network analyzer with a wideband antenna.

  • Page 136: Examples Of Antennas

    LISA-U2 series - System integration manual 2.4.3 Examples of antennas Table 47 lists some examples of possible internal on-board surface-mount antennas Manufacturer Part Number Product Name Description Taoglas PA.25.A Anam GSM / WCDMA SMD Antenna 824..960 MHz, 1710..2170 MHz 36.0 x 6.0 x 5.0 mm Taoglas PA.710.A...
  • Page 137 LISA-U2 series - System integration manual Manufacturer Part Number Product Name Description FSQS35241-UF-10 GSM / WCDMA / LTE PCB Antenna with cable and U.FL connector 690..960 MHz, 1710..2170 MHz, 2500..2700 MHz 110.0 x 21.0 mm Yaego ANTX100P001BWPEN3 GSM / WCDMA PCB Antenna with cable and I-PEX connector 824..960 MHz, 1710..2170 MHz...

  • Page 138: Antenna Detection Functionality

    LISA-U2 series - System integration manual 2.4.4 Antenna detection functionality The internal antenna detect circuit is based on ADC measurement at ANT: the RF port is DC coupled to the ADC unit in the baseband chip which injects a DC current (10 µA for 128 µs) on ANT and measures the resulting DC voltage to evaluate the resistance from the ANT pad to GND.

  • Page 139: Esd Guidelines

    LISA-U2 series - System integration manual For example, consider a GSM antenna with built-in DC load resistor of 15 k. Using the +UANTR AT command, the module reports the resistance value evaluated from the ANT connector to GND: • Reported values close to the used diagnostic resistor nominal value (i.e. values from 13 kΩ to 17 kΩ...

  • Page 140: Esd Immunity Test Of U-Blox Lisa-U2 Series Reference Designs

    [13] European Norms. The EMC / ESD approved u-blox reference designs consist of a LISA-U2 series module soldered onto a motherboard which provides the supply interface, SIM card, headset, and communication port. An external antenna is connected to an SMA connector provided on the motherboard for the main Tx/Rx antenna.

  • Page 141: Esd Application Circuits

    39 nH Multilayer Chip Inductor L0G 0402 5% LQG15HN39NJ02 - Murata Table 53: Example of parts for the antenna port ESD immunity protection application circuit for LISA-U2 series modules With LISA-U230 modules, the ANT_DIV pin provides ESD immunity up to ±4 kV for direct Contact Discharge and up to ±8 kV for Air Discharge: no further precaution to ESD immunity test is needed, as...
  • Page 142 • A 220 nF bypass capacitor (e.g. Murata GRM155R60J224KE01) must be mounted as close as possible to the RESET_N pin of LISA-U2 series modules to avoid a module reset caused by an electrostatic discharge applied to the application board enclosure •...
  • Page 143 LISA-U2 series - System integration manual ESD category level, all the module pins that are externally accessible should be protected up to ±4 kV for direct Contact Discharge and up to ±8 kV for Air Discharge applied to the enclosure surface.

  • Page 144: Features Description

    LISA-U2 series - System integration manual Features description 3.1 Network indication Alternatively from their default settings, the GPIO1, GPIO2, GPIO3, GPIO4 or GPIO5 can be configured to indicate the network status (i.e. no service, registered home network, registered visitor network, voice or data call enabled), by means of the AT+UGPIOC command.

  • Page 145: Tcp/Ip And Udp/Ip

    LISA-U2 series - System integration manual 3.4 TCP/IP and UDP/IP Via the AT commands, it is possible to access the TCP/IP and UDP/IP functionalities over the Packet Switched data connection. For more details about AT commands, see the u-blox AT commands manual [2].

  • Page 146: Http

    LISA-U2 series - System integration manual 3.6 HTTP LISA-U2 modules support Hypertext Transfer Protocol (HTTP/1.0) functionalities as an HTTP client is implemented: HEAD, GET, POST, DELETE and PUT operations are available. The file size to be uploaded / downloaded depends on the free space available in the local file system (FFS) at the moment of the operation.
  • Page 147 LISA-U2 series - System integration manual Algorithm Supported feature Table 56: Authentication Algorithm Supported feature 3DES AES128 AES256 Table 57: Encryption Algorithm Supported feature SHA/SHA1 SHA256 SHA384 Table 58: Message digest Description Registry value Supported feature TLS_RSA_WITH_AES_128_CBC_SHA 0x00,0x2F TLS_RSA_WITH_AES_128_CBC_SHA256 0x00,0x3C...

  • Page 148: Dual Stack Ipv4/Ipv6

    Full access to u-blox GNSS receivers is available via the LISA-U2 series, through a dedicated DDC (I2C) interface, while the available GPIOs can handle the positioning chipset / module power-on/off. This means that GSM/WCDMA and GNSS can be controlled through a single serial port from any host processor.
  • Page 149 LISA-U2 series - System integration manual The CellLocate ® database is compiled from the position of devices which observed, in the past, a specific cell or set of cells (historical observations) as follows: Several devices reported their position to the CellLocate ®...

  • Page 150: Hybrid Positioning

    LISA-U2 series - System integration manual 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 ®...

  • Page 151: Control Plane Aiding / Location Services (Lcs)

    LISA-U2 series - System integration manual 3.11 Control Plane Aiding / Location Services (LCS) ☞ Not supported by the "01", "x2", "63" and "68" product versions With the Assisted GPS feature, a location server provides the module with the GPS system information that otherwise needs to be downloaded from satellites.

  • Page 152: Last Gasp

    LISA-U2 series - System integration manual 3.14 Last gasp ☞ Not supported by the "01", "02", "03", "52", "62", "63", "68", "83" product versions. In the event of a power supply outage (i.e. main supply interruption, battery removal, battery voltage below a certain threshold), the cellular module can be configured to send an alarm notification to a remote entity after a trigger by a properly configured GPIO pin.

  • Page 153: Sim Access Profile (Sap)

    LISA-U2 series - System integration manual 3.17 SIM Access Profile (SAP) SIM access profile (SAP) feature allows LISA-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.

  • Page 154: Smart Temperature Management

    LISA-U2 series - System integration manual The application processor can start an SAP connection negotiation between the LISA-U2 module SAP client and an SAP server using a custom AT command (for more details, see the u-blox AT commands manual [2]).
  • Page 155 LISA-U2 series - System integration manual The entire temperature range is divided into sub-regions by limits (see Figure 72) named t and t • Within the first limit, (t < Ti < t ), the cellular module is in the normal working range, the Safe Area.

  • Page 156: Threshold Definitions

    LISA-U2 series - System integration manual Figure 73 shows the flow diagram implemented for the Smart Temperature Supervisor. IF STS enabled Feature enabled Feature disabled: (full logic or no action indication only) Read temperature <Ti<t Temperature is within normal operating range...

  • Page 157: Bearer Independent Protocol

    LISA-U2 series - System integration manual The temperature thresholds are defined in Table Symbol Parameter Temperature Remarks Low temperature shutdown –40 °C Equal to the absolute minimum temperature rating for the cellular module (the lower limit of the extended temperature range) Low temperature warning –30 °C...

  • Page 158: Power Saving

    For the complete description of the AT+UPSV command, see the u-blox AT commands manual [2]. For the definition and the description of LISA-U2 series modules operating modes, including the events forcing transitions between the different operating modes, see section 1.4.

  • Page 159: Handling And Soldering

    4.1 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 LISA-U2 series data sheet the u-blox package information user guide [20].
  • Page 160 LISA-U2 series - System integration manual Preheat phase Initial heating of component leads and balls. Residual humidity will be dried out. This preheat phase will not replace prior baking procedures. • Temperature rise rate: max 3 °C/s – If the temperature rise is too rapid in the preheat phase, it may cause excessive slumping.

  • Page 161: Optical Inspection

    (SMT) devices require wave soldering to solder the THT components. No more than one wave soldering process is allowed for a board with a LISA-U2 module already populated on it. Wave soldering process is not recommended for LISA-U2 series LCC modules. ⚠...

  • Page 162: Rework

    LISA-U2 series - System integration manual 4.2.8 Rework The LISA-U2 modules can be unsoldered from the baseboard using a hot air gun. ⚠ Avoid overheating the module. After the module is removed, clean the pads before placing. ⚠ Never attempt a rework on the module itself, e.g. replacing individual components. Such actions immediately terminate the warranty.

  • Page 163: Product Testing

    LISA-U2 series - System integration manual 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 production quality. This is achieved with automatic test equipment, which delivers a detailed test report for each unit.

  • Page 164: Test Parameters For Oem Manufacturer

    LISA-U2 series - System integration manual 5.2 Test parameters for OEM manufacturer Because of the testing done by u-blox (with 100% coverage), an OEM manufacturer does not need to repeat firmware tests or measurements of the module RF performance or tests over analog and digital interfaces in their production test.
  • Page 165 LISA-U2 series - System integration manual Wireless Wideband Antenna Antenna Application LISA-U2 Spectrum Processor series Analyzer Commands Power Meter Application Board Wireless Wideband Antenna Antenna Application LISA-U2 Processor series Commands Signal Generator Application Board Figure 76: Setup with spectrum analyzer and signal generator for radiated measurements...
  • Page 166 LISA-U2 series - System integration manual Trigger TX GMSK burst at maximum PCL: To check if the power supply is correctly assembled and is able to deliver the required current Trigger TX GMSK and 8PSK burst and WCDMA signal: To measure current consumption To check if the module components were damaged during the soldering process or during handling (ESD, mechanical shock…)

  • Page 167: Appendix

    Check the supported 3G bands for proper antenna circuit development, since LISA-U2 supports  various 3G bands in comparison to LISA-U1 series cellular modules. Check audio requirements, since Analog Audio Interfaces are not supported by LISA-U2 series.  Check audio requirements, since Digital Audio Interfaces are supported by LISA-U2 series ...

  • Page 168: Software Migration

    50 Ω. The same pad is a reserved pin on LISA-U1 series and on the other LISA- U2 series modules. Analog audio interfaces are not supported by LISA-U2 series modules, but a second 4-wire I2S digital audio interface is provided instead of the 4 analog audio pins. The same 4 pins can be configured as GPIO on LISA-U2 series modules.
  • Page 169 V_BCKP operating characteristics are slightly changed in comparison to LISA-U1 series modules. The voltage level of all the digital interfaces of LISA-U2 series modules is 1.8 V as for LISA-U1 series modules. The internal active pull-up / pull-down values at the digital interface input pins and the current capability of digital interface output pins LISA-U2 series modules are slightly changed in comparison to LISA-U1 series modules.

  • Page 170: Pin-Out Comparison Lisa-U1 Series Vs. Lisa-U2 Series

    LISA-U2 series - System integration manual A.3.2 Pin-out comparison LISA-U1 series vs. LISA-U2 series RSVD Rx Div V_BCKP V_BCKP V_INT V_INT RSVD RSVD SPI_MRDY SPI_MRDY / GPIO14 SPI_SRDY SPI_SRDY / GPIO13 SPI_MISO SPI_MISO / GPIO12 GPIO SPI_MOSI SPI_MOSI / GPIO11...
  • Page 171 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series UART ring indicator UART ring indicator Circuit 125 (RI) in ITU-T V.24, 1.8 V typ. output output LISA-U1 series: Output driver strength = 4 mA LISA-U2 series: Output driver strength = 2 mA...
  • Page 172 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series PWR_ON Power-on input PWR_ON Power-on input PWR_ON switch-on low pulse time difference: LISA-U1 series: L-level pulse time = 5 ms min LISA-U2 series: L-level pulse time = 50 µs min / 80 µs max...
  • Page 173 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series RESET_N External reset input RESET_N External reset input RESET_N hardware reset or switch-on low pulse time: LISA-U1 series: L-level pulse time = 50 ms min LISA-U2 series: L-level pulse time = 50 ms min...
  • Page 174 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series MIC_P LISA-U120, I2S1_TXD / LISA-U2 series: LISA-U120, LISA-U130: LISA-U130: GPIO7 I2S Tx data output / Differential analog audio input (pos.) Differential analog GPIO LISA-U2 series: audio input (pos.) I2S1_TXD and configurable GPIO, 1.8 V LISA-U100, typ.
  • Page 175 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series SIM_CLK SIM clock output SIM_CLK SIM clock output No difference: 3.25 MHz clock frequency for SIM card SIM_IO SIM data input/output SIM_IO SIM data input/output No difference: Internal 4.7 kΩ pull-up resistor to VSIM.
  • Page 176 LISA-U2 series - System integration manual LISA-U1 series LISA-U2 series SPI_SCLK SPI Serial Clock Input SPI_SCLK / SPI Serial Clock Input / LISA-U1 series: GPIO10 GPIO SPI_CLK, 1.8 V typ Internal active pull-down = 100 µA LISA-U2 series: SPI_CLK and configurable GPIO, 1.8 V typ.
  • Page 177 LISA-U230: LISA-U230: RF input for RF antenna input for Rx diversity Rx diversity antenna 50 Ω nominal impedance Ground Ground Ground Ground Table 61: Pinout comparison LISA-U1 series vs. LISA-U2 series UBX-13001118 - R27 Appendix Page 177 of 183 C1-Public...

  • Page 178: Layout Comparison Lisa-U1 Series Vs. Lisa-U2 Series

    Signals keep-out areas on application board LISA-U2 bottom side (through module view) 22.4 mm Figure 80: Signals keep-out areas on the top layer of the application board, below LISA-U2 series modules UBX-13001118 - R27 Appendix Page 178 of 183 C1-Public...
  • Page 179 LISA-U2 series - System integration manual B Glossary Abbreviation Definition Analog to Digital Converter Application Processor AT Command Interpreter Software Subsystem, or attention CBCH Cell Broadcast Channel Coding Scheme Circuit Switched Data Clear To Send Direct Current Data Carrier Detect...
  • Page 180 LISA-U2 series - System integration manual Abbreviation Definition PBCCH Packet Broadcast Control Channel Pulse Code Modulation Personal Communications Service Pulse Frequency Modulation Power Management Unit Radio Frequency Ring Indicator Real Time Clock Request To Send RX Data Surface Acoustic Wave...

  • Page 181: Related Documentation

    LISA-U2 series - System integration manual Related documentation u-blox LISA-U2 series data sheet, UBX-13001734 u-blox AT commands manual, UBX-13002752 ITU-T Recommendation V.24, 02-2000. List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE). http://www.itu.int/rec/T-REC-V.24-200002-I/en 3GPP TS 27.007 - AT command set for User Equipment (UE)

  • Page 182: Revision History

    LISA-U2 series - System integration manual Revision history Revision Date Name Comments 21-Oct-2010 sses Initial Release 11-Jan-2011 sses Thickness information added. GPIO description improved 26-Apr-2011 lpah Advance Information status 07-Jul-2011 lpah Preliminary status 26-Oct-2011 sses Objective Specification status. Initial release for LISA-U series: added the...

  • Page 183: Contact

    LISA-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 Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone:+1 703 483 3180 Phone: +65 6734 3811 Email:info_us@u-blox.com...

This manual is also suitable for:

Lisa-u200Lisa-u200 fotaLisa-u201Lisa-u201 fotaLisa-u230Lisa-u260 ... Show all

Table of Contents