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. www.u-blox.
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 R25 10-Apr-2019 Disclosure Restriction This document applies to the following products: Product name Type number Modem version Application version PCN reference Product status LISA-U200 LISA-U200-01S-00 22.40 UBX-TN-12040 Obsolete LISA-U200-01S-01 22.40 A01.
LISA-U2 series - System Integration Manual Product name Type number Modem version Application version PCN reference Product status LISA-U270 LISA-U270-01S-02 22.61 A01.02 UBX-14042086 Obsolete LISA-U270-02S-02 22.90 A01.02 UBX-14042086 End of Life LISA-U270-02S-03 22.90 A01.04 UBX-17048820 End of Life LISA-U270-62S-04 22.93 A01.02 UBX-14042086 Obsolete LISA-U270-62S-05 22.93 A01.04 UBX-15029938 Obsolete LISA-U270-62S-06 22.93 A01.
LISA-U2 series - System Integration Manual Contents Document Information ................................................................................................................................ 2 Contents .......................................................................................................................................................... 4 1 System description .......................................................................................................................
LISA-U2 series - System Integration Manual 1.15.5 ICASA Certification ......................................................................................................................... 113 1.15.6 KCC Certification ............................................................................................................................. 114 1.15.7 ANATEL Certification ..................................................................................................................... 114 1.15.
LISA-U2 series - System Integration Manual 3.16 Smart Temperature Management ...................................................................................................... 154 3.16.1 Smart Temperature Supervisor (STS) ....................................................................................... 154 3.16.2 Threshold definitions ..................................................................................................................... 155 3.17 Bearer Independent Protocol ..........
LISA-U2 series - System Integration Manual 1 System description 1.1 Overview LISA-U2 cellular modules integrate full-feature 3G UMTS/HSxPA and 2G GSM/GPRS/EDGE protocol stack with Assisted GPS support. These SMT modules come in the compact LISA form factor, featuring Leadless Chip Carrier (LCC) packaging technology.
LISA-U2 series - System Integration Manual 3G Transmission and Receiving: LISA-U2 modules implement 3G High-Speed Uplink Packet Access (HSUPA) category 6. LISA-U200, LISA-U201, LISA-U260 and LISA-U270 modules implement 3G High Speed Downlink Packet Access (HSDPA) category 8. LISA-U230 modules implement the 3G HSDPA category 14. The HSUPA and HSDPA categories determine the maximum speed at which data can be respectively transmitted and received.
LISA-U2 series - System Integration Manual 1.2 Architecture Duplexers & Filters ANT (U)SIM card RF SWITCH DDC (for GNSS) Switch & Multi band & mode PA PA PM U SPI 26 MHz Filter Bank ANT_DIV UART RF Transceiver 32.768 kHz RF SWITCH Transceiver PMU Wireless Base-band Processor GPIO(s) Memory Digital audio (I2S) Vcc (supply) V_BCKP (RTC) USB Power on Power Management Unit V_INT (I/O) External reset Figure 1: LISA-U2 series block diagram (for available options see Table 2) 1.2.
LISA-U2 series - System Integration Manual Power management unit with integrated DC/DC converter for the power amplifier module Voltage-controlled temperature compensated 26 MHz crystal oscillator (VC-TCXO) While operating in 3G mode, the RF transceiver performs direct up-conversion and down-conversion of the baseband I/Q signals, with the RF voltage controlled gain amplifier being used to set the uplink TX power.
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 No I/O Description Remarks Power VCC All 61, 62, 63 I Module supply input Clean and stable supply is required: low ripple and low voltage drop must be guaranteed. Voltage provided must be always above the minimum limit of the operating range. Consider that there are large current spikes in connected mode, when a GSM call is enabled.
LISA-U2 series - System Integration Manual Function Pin Module No I/O Description Remarks SPI SPI_MISO All 57 O SPI Data Line Output Module Output: module runs as an SPI slave. Shift data on rising clock edge (CPHA=1). Latch data on falling clock edge (CPHA=1). Idle high. See section 1.9.4 SPI_MOSI All 56 I SPI Data Line Input Module Input: module runs as an SPI slave. Shift data on rising clock edge (CPHA=1). Latch data on falling clock edge (CPHA=1). Idle high.
LISA-U2 series - System Integration Manual Function Pin Module No I/O Description Remarks GPIO GPIO1 All 20 I/O GPIO See section 1.12 GPIO2 All 21 I/O GPIO See section 1.12 GPIO3 All 23 I/O GPIO See section 1.12 GPIO4 All 24 I/O GPIO See section 1.12 GPIO5 All 51 I/O GPIO See section 1.12 GPIO6 All 39 I/O GPIO See section 1.12 GPIO7 All 40 I/O GPIO See section 1.12 GPIO8 All 53 I/O GPIO See section 1.12 GPIO9 All 54 I/O GPIO See section 1.
LISA-U2 series - System Integration Manual Function Pin Module No I/O Description Remarks Digital Audio I2S_CLK All 43 I/O First I S clock Check device specifications to ensure compatibility with module supported modes. See section 1.11. I2S_RXD All 44 I First I2S receive data Internal active pull-down to GND enabled. Check device specifications to ensure compatibility with module supported modes. See section 1.11.
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 Definition Power-down Not-Powered Mode VCC supply not present or below operating range: module is switched off. Power-Off Mode VCC supply within operating range and module is switched off.
LISA-U2 series - System Integration Manual Operating Mode Description Transition between operating modes Active The module is ready to accept data signals from an external device unless power saving configuration is enabled by AT+UPSV (see sections 1.9.2.3, 1.9.3.2, 1.9.4.2 and the u-blox AT Commands Manual [2]). When the module is switched on by an appropriate power-on event (see 1.6.1), the module enters active mode from not-powered or power-off mode.
LISA-U2 series - System Integration Manual 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.
LISA-U2 series - System Integration Manual V_BCKP is the Real Time Clock (RTC) supply. When the VCC voltage is within the valid operating range, the internal PMU supplies the Real Time Clock and the same supply voltage will be available to the V_BCKP pin. If the VCC voltage is under the minimum operating limit (for example, during not powered mode), the Real Time Clock can be externally supplied via the V_BCKP pin (see section 1.5.4). When a 1.
LISA-U2 series - System Integration Manual ☞ LISA-U2 series modules switch off when the VCC voltage value drops below the specified extended operating range minimum limit: ensure that the input voltage at the VCC pins never drops below the minimum limit of the extended operating range when the module is switched on, not even during a GSM transmit burst, where the current consumption can rise up to maximum peaks of 2.5 A in case of a mismatched antenna load.
LISA-U2 series - System Integration Manual 1.5.2.
LISA-U2 series - System Integration Manual able to withstand at least the maximum average current consumption value specified in the LISA-U2 series Data Sheet [1]. The additional energy required by the module during a GSM/GPRS Tx slot (when in the worst case the current consumption can rise up to 2.5 A, as described in section 1.5.3.1) can be provided by an appropriate bypass tank capacitor or supercapacitor with very large capacitance and very low ESR placed close to the module VCC pins.
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.
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.
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.
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 be capable of delivering a DC current greater than the module’s maximum average current consumption to VCC pins.
LISA-U2 series - System Integration Manual 68 pF capacitor with Self-Resonant Frequency in the 800/900 MHz range (e.g. Murata GRM1555C1H680J) at the VCC line where it narrows close to the module (see Figure 9), to filter EMI in lower bands 15 pF capacitor with Self-Resonant Frequency in 1800/1900 MHz range (e.g. Murata GRM1555C1H150J) at the VCC line where it narrows close to the module (see Figure 9), to filter EMI in higher bands 10 nF capacitor (e.g.
LISA-U2 series - System Integration Manual Fast-charge constant current: the battery is charged with the maximum current, configured by the value of an external resistor to a value suitable for USB power source (~500 mA). Constant voltage: when the battery voltage reaches the regulated output voltage (4.2 V), the L6924U starts to reduce the current until the charge termination is done.
LISA-U2 series - System Integration Manual 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. 1.5.3.
LISA-U2 series - System Integration Manual When a GPRS connection is established, there is a different VCC current consumption profile also determined by the transmitting and receiving bursts. In contrast to a GSM call, during a GPRS connection more than one slot can be used to transmit and/or more than one slot can be used to receive.
LISA-U2 series - System Integration Manual 1.5.3.2 3G connected mode During a 3G connection, the module 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. These power control commands are logically divided into a slot of 666 µ s, thus the rate of power change can reach a maximum rate of 1.5 kHz.
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.
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. The module processor core is activated during active mode, and the 26 MHz reference clock frequency is used.
LISA-U2 series - System Integration Manual 1.5.4 RTC Supply (V_BCKP) The V_BCKP pin connects the supply for the Real Time Clock (RTC) and Power-On / Reset internal logic. This supply domain is internally generated by a linear regulator integrated in the Power Management Unit. The output of this linear regulator is always enabled when the main voltage supply provided to the module through VCC is within the valid operating range, with the module switched-off or powered-on.
LISA-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 power consumption is approximately 2 µ A (see the input characteristics of supply/power pins table in the LISA-U2 series Data Sheet [1] for the detailed specification), whereas at +70 °C and an equal voltage, the power consumption increases to 5-10 µ A.
LISA-U2 series - System Integration Manual If longer buffering time is required to allow the time reference to run during a disconnection of the VCC supply, then an external battery can be connected to V_BCKP pin. The battery should be able to provide a proper nominal voltage and must never exceed the maximum operating voltage for V_BCKP (specified in the input characteristics of the supply/power pins table in the LISA-U2 series Data Sheet [1]).
LISA-U2 series - System Integration Manual 1.5.5 Interface supply (V_INT) The same voltage domain used internally to supply the digital interfaces is also available on the V_INT pin. The internal regulator that generates the V_INT supply is a switching step down converter that is directly supplied from VCC. The voltage regulator output is set to 1.8 V (typical) when the module is switched on and is disabled when the module is switched off or when the RESET_N pin is forced the low level.
LISA-U2 series - System Integration Manual 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.
LISA-U2 series - System Integration Manual 1.6.1.2 Low pulse on PWR_ON When the module is in power-off mode, i.e. it has been cleanly switched off as described in the section 1.6.2 (e.g. by the AT+CPWROFF command) and a voltage within the operating range is maintained at the VCC pins, the module can be switched on by means of the PWR_ON input pin: a falling edge must be provided on the PWR_ON pin, which must be then held low for an appropriate time period as specified in the LISA-U2 series Data Sheet [1].
LISA-U2 series - System Integration Manual 1.6.1.3 Rising edge on RESET_N When the module is in power-off mode (i.e. switched off with VCC maintained), the module can be switched on by means of the RESET_N input pin alternatively to the PWR_ON input pin: the RESET_N signal must be forced low for at least 50 ms and then released to generate a rising edge that starts the module power-on sequence.
LISA-U2 series - System Integration Manual Figure 18 shows the modules power-on sequence from power-off mode, with the following phases: The external supply is still applied to the VCC inputs as it is assumed that the module has been previously switched off by means of the AT+CPWROFF command: the V_BCKP output is internally enabled as suitable VCC is present, the RESET_N is set to high logic level due to internal pull-up to V_BCKP, the PWR_ON is set to high logic level due to an externa
LISA-U2 series - System Integration Manual 1.6.
LISA-U2 series - System Integration Manual Figure 19 describes the module’s power-off sequence, properly started by sending the AT+CPWROFF command, allowing storage of current parameter settings in the module’s non-volatile memory and a proper network detach: When the +CPWROFF AT command is sent, the module starts the switch-off routine. The module replies OK on the AT interface: the switch-off routine is in progress.
LISA-U2 series - System Integration Manual 1.6.3 Module reset LISA-U2 series modules can be properly reset (rebooted) by: AT+CFUN command (see the u-blox AT Commands Manual [2] for more details). This command causes an “internal” or “software” reset of the module, causing an asynchronous reset of the module baseband processor, excluding the integrated Power Management Unit and the RTC internal block.
LISA-U2 series - System Integration Manual If RESET_N is connected to an external device (e.g. an application processor on an application board), an open drain output can be directly connected without any external pull-up. A push-pull output can be used too: in this case, make sure that the high level voltage of the push-pull circuit is below the maximum voltage operating range of the RESET_N pin (specified in the RESET_N pin characteristics table in the LISA-U2 series Data Sheet [1]).
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 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.
LISA-U2 series - System Integration Manual 1.8 (U)SIM interface The high-speed SIM/ME interface is implemented as well as automatic detection of the required SIM supporting voltage. Both 1.8 V and 3 V SIM types are supported: activation and deactivation with an automatic voltage switch from 1.8 V to 3 V is implemented, according to ISO-IEC 7816-3 specifications.
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.
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 implemented (see the circuit described in Figure 23 if the SIM detection feature is required).
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 the circuit described in Figure 23 if the SIM detection feature is required).
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 Connect the UICC / SIM contact C3 (CLK) to the SIM_CLK pin of the module Connect the UICC / SIM contact C2 (RST) to the SIM_RST pin of the module Connect the UICC / SIM contact C5 (GND) to ground Connect one pin
LISA-U2 series - System Integration Manual 1.8.1.5 Dual SIM card connection Two SIM cards / chips can be connected to the module’s SIM interface, as described in the circuit of Figure 24. LISA-U2 modules do not support the usage of two SIMs at the same time, but two SIMs can be populated on an application board that provides a suitable switch to connect only the first SIM or only the second SIM per time to the SIM interface of the modules as described in Figure 24.
LISA-U2 series - System Integration Manual FIRST SIM CARD LISA-U2 series VSIM 50 SIM_IO 48 SIM_CLK 47 SIM_RST 49 3V8 VPP (C6) 4PDT C11 Analog Switch VCC 1VSIM VSIM 2VSIM VCC (C1) DAT 1DAT 2DAT CLK 1CLK 2CLK RST 1RST 2RST SEL IO (C7) CLK (C3) RST (C2) C1 C2 C3 C4 C5 GND (C5) D1 D2 D3 D4 SECOND SIM CARD VPP (C6) GND VCC (C1) U1 Application Processor J1 IO (C7) CLK (C3) RST (C2) GPIO C6 C7 C8 C9 C10 R1 GND (C5) D5 D6 D7 D8 J2 Figure 24: Application circuit for connection to two rem
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.
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]).
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 means of an AT command (for more details, see section 3.1 and Firmware update application note [16]). UART interface provides RS-232 functionality conforming to the ITU-T V.
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. ☞ Hardware flow control is enabled by default. One-shot autobauding is supported: the baud rate detection is performed once, at module start-up.
LISA-U2 series - System Integration Manual One-shot automatic frame recognition is supported and enabled in conjunction with the one-shot automatic baud rate detection only: when the one-shot autobauding is active, the one-shot automatic frame recognition is enabled overruling the frame format setting. The frame format recognition is performed once and then, after the successful recognition of the frame format, the automatic frame recognition is disabled, as the automatic baud rate detection.
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. CTS signal behavior The module hardware flow control output (CTS line) is set to the ON state (low level) at UART initialization.
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.
LISA-U2 series - System Integration Manual established. For a data call there are the following scenarios (see the u-blox AT Commands Manual [2] for the definition of the interface data mode, command mode and online command mode): PSD data call: Before activating the PPP protocol (data mode) a dial-up application must provide the ATD*99***# to the module: with this command the module switches from command mode to data mode and can accept PPP packets.
LISA-U2 series - System Integration Manual The RI line can notify an SMS arrival. When the SMS arrives, the RI line switches from OFF to ON for 1 s (see Figure 27), if the feature is enabled by the appropriate AT command (see the u-blox AT Commands Manual [2], AT+CNMI command). 1s RI OFF RI ON 0 time [s] SMS arrives Figure 27: RI behavior at SMS arrival This behavior allows the DTE to stay in power saving mode until the DCE related event requests service.
LISA-U2 series - System Integration Manual ☞ The AT+UPSV=3 power saving configuration is not supported by the “01” product version. 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 summarized in Table 28.
LISA-U2 series - System Integration Manual AT+UPSV HW flow control RTS line DTR line Communication during idle mode and wake-up 3 Disabled (AT&K0) ON or OFF ON Data sent by the DTE is correctly received by the module. Data sent by the module is correctly received by the DTE if it is ready to receive data, otherwise data is lost. 3 Disabled (AT&K0) ON or OFF OFF Data sent by the DTE is lost by the module.
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 Not registered: when a module is not registered with a network, the UART is enabled for ~20 ms, and then, if data has not been received or sent, the UART is disabled for 2.
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. The UART interface is immediately disabled after the DTE sets the DTR line to OFF.
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). UART DCE UART is enabled for 2000 GSM frames (~9.
LISA-U2 series - System Integration Manual ☞ In command mode6, if autobauding is disabled, the DTE must always send a dummy “AT” before each command line: the first character is not ignored if the module is in active mode (i.e. the module replies “OK”), or it represents the wake-up character if the module is in low-power idle mode (i.e. the module does not reply).
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. Maxim MAX3237E and Texas Instruments SN74AVC4T774) can be used. The Texas Instruments chip provides the translation from 1.8 V to 3.3 V, while the Maxim chip provides the translation from 3.
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: Leave the 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.
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 it can be done when the complete UART link is provided (9-wire, as implemented in Figure 31 and in Figure 32), i.e.
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 36. Application processor (3.0V DTE) Unidirectional Voltage Translator 3V0 VCC C1 VCCA DIR1 DIR3 VCCB TxD A1 B1 RxD A2 B2 RTS A3 B3 CTS A4 B4 DIR2 DIR4 LISA-U2 series (1.
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. Application processor (1.8V DTE) LISA-U2 series (1.
LISA-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 1.9.2.3 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 1.9.2.
LISA-U2 series - System Integration Manual 1.9.3 USB interface LISA-U2 modules provide a high-speed USB interface at 480 Mbit/s compliant with the Universal Serial Bus Revision 2.0 specification [7]. It acts as a USB device and can be connected to any USB host such as a PC or other application processor. The USB-device shall look for all upper SW layers like any other serial device. This means that the LISA-U2 modules emulate all serial control logical lines.
LISA-U2 series - System Integration Manual Each USB profile of LISA-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 [7]. If the USB interface is connected to the host before the module switch-on, or if the module is reset with the USB interface connected to the host, the VID and PID are automatically updated at runtime, after the USB detection.
LISA-U2 series - System Integration Manual ☞ The USB profile change, triggered by means of the AT+UUSBCONF command, is not performed at run-time. The settings are saved in the Non-Volatile Memory at the module power-off, triggered by means of the AT+CPWROFF command, and the new configuration will be effective at the subsequent module reboot.
LISA-U2 series - System Integration Manual The USB drivers are available for the following operating system platforms: Windows XP (WHQL, Thesycon v1.8, Thesycon v1.96) Windows Vista (WHQL, Thesycon v1.8, Thesycon v1.96) Windows 7 (WHQL, Thesycon v1.8, Thesycon v1.96) Windows 8 Windows 8.1 Windows 10 Windows CE 5.0 (Thesycon v1.42, Thesycon v1.50) Windows Embedded CE 6.0 (Thesycon v1.42, Thesycon v1.50) Windows Embedded Compact 7 (Thesycon v1.
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. 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 - System Integration Manual 1.9.4 SPI interface SPI is a master-slave protocol: the module runs as an SPI slave, 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. The standard 3-wire SPI interface includes two signals to transmit and receive data (SPI_MOSI and SPI_MISO) and a clock signal (SPI_SCLK).
LISA-U2 series - System Integration Manual 1.9.4.1 IPC communication protocol overview The module runs as an SPI slave, 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.
LISA-U2 series - System Integration Manual 1.9.4.2 IPC communication and power saving If power saving is enabled by an AT command (AT+UPSV=1, AT+UPSV=2 or AT+UPSV=3), the LISAU2 module automatically enters idle mode whenever possible, if the master 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. 1.9.4.
LISA-U2 series - System Integration Manual Master-initiated transfer with a sleeping slave SPI_MRDY 2 3 1 SPI_SRDY 4 Header DATA EXCHG 5 Data Header Figure 43: Data transfer initiated by the application processor (master) with a sleeping LISA-U2 module (slave) When the slave is sleeping (idle mode), the following actions happen: 1. 2. 3. 4. 5. The master wakes the slave by setting the SPI_MRDY line active. As soon as the slave is awake, it signals it by activating SPI_SRDY.
LISA-U2 series - System Integration Manual 1.9.4.4 IPC application circuits SPI_MOSI is the data line input for the module since it runs as an SPI slave: it must be connected to the data line output (MOSI) of the application processor that runs as an SPI master. SPI_MISO is the data line output for the module since it runs as an SPI slave: it must be connected to the data line input (MISO) of the application processor that runs as an SPI master.
LISA-U2 series - System Integration Manual Application processor (3.0V SPI master) 3V0 VCC LISA-U2 series (1.
LISA-U2 series - System Integration Manual The following virtual channels are defined: Channel 0: control channel Channel 1 – 5: AT commands / data connection Channel 6: GNSS tunneling Channel 7: SAP (SIM Access Profile) For more details, see the Mux implementation Application Note [14]. ☞ If the module switch-off AT command +CPWROFF is issued over a multiplexer channel, the completion of the module power-off sequence could require up to 2.5 s, after the module OK reply.
LISA-U2 series - System Integration Manual 1.10 DDC (I2C) interface 1.10.1 Overview An I2C bus compatible Display Data Channel (DDC) interface for communication with u-blox GNSS receivers is available on the LISA-U2 modules. The communication between a u-blox cellular module and a u-blox GNSS receiver is only provided by this DDC (I2C) interface. Name Description Remarks SCL I2C bus clock line Open drain. External pull-up required. SDA I C bus data line Open drain. External pull-up required.
LISA-U2 series - System Integration Manual specifications [8]: for example, 4.7 k resistors can be commonly used. Pull-ups must be connected to a supply voltage of 1.8 V (typical), since this is the voltage domain of the DDC pins which are not tolerant to higher voltage values (e.g. 3.0 V). ☞ Connect the DDC (I2C) pull-ups to the V_INT 1.8 V supply source, or another 1.8 V supply source enabled after V_INT (e.g. as the GNSS 1.
LISA-U2 series - System Integration Manual The GPIO2 is configured by default to provide the “GNSS supply enable” function (parameter of AT+UGPIOC command set to 3 by default), to enable or disable the supply of the ublox GNSS receiver connected to the cellular module by the AT+UGPS command.
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 1.8 V GNSS supply enabled after the V_INT supply of the I2C pins of the LISA-U2 cellular module.
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). The V_INT supply is able to withstand the maximum current consumption of these positioning receivers.
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 proper I2C-bus Bidirectional Voltage Translator (e.g.
LISA-U2 series - System Integration Manual 1.11 Audio Interface All LISA-U2 series modules provide two bidirectional 4-wire I2S digital audio interfaces for connecting to remote digital audio devices: First 4-wire I2S digital audio interface (I2S_CLK, I2S_RXD, I2S_TXD and I2S_WA) Second 4-wire I2S digital audio interface (I2S1_CLK, I2S1_RXD, I2S1_TXD and I2S1_WA) Audio signal routing can be controlled by the dedicated AT command +USPM (see the u-blox AT Commands Manual [2]).
LISA-U2 series - System Integration Manual The I2S interface can be set to two modes using the parameter of the AT+UI2S command: PCM mode Normal I2S mode The I2S interface can be set to two configurations, by the parameter of AT+UI2S: Master mode Slave mode The sample rate of transmitted/received words can be set, by the parameter of AT+UI2S, to: 8 kHz 11.025 kHz 12 kHz 16 kHz 22.05 kHz 24 kHz 32 kHz 44.
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 I2S word alignment toggles high for 1 or 2 CLK cycles of synchronization (configurable), then toggles low for 16 CLK cycles of sample width.
LISA-U2 series - System Integration Manual 1.11.3 I2S interface application circuits LISA-U2 I2S digital audio interfaces can be connected to an external digital audio device for voice applications.
LISA-U2 series - System Integration Manual Examples of manufacturers offering compatible audio codec parts, suitable to provide basic analog audio voice capability on the application device, are the following: Maxim Integrated (as the MAX9860, MAX9867, MAX9880A audio codecs) Texas Instruments / National Semiconductor Cirrus Logic / Wolfson Microelectronics Nuvoton Technology Asahi Kasei Microdevices Realtek Semiconductor Figure 50 and Table 41 describe an application circuit for I2S digital au
LISA-U2 series - System Integration Manual Reference Description Part Number – Manufacturer C1 100 nF Capacitor Ceramic X5R 0402 10% 10V GRM155R71C104KA01 – Murata C2, C4, C5, C6 1 µ F Capacitor Ceramic X5R 0402 10% 6.3 V GRM155R60J105KE19 – Murata C3 10 µ F Capacitor Ceramic X5R 0603 20% 6.
LISA-U2 series - System Integration Manual I2S_RXD I2S1_RXD Uplink Digital Gain Switch I2Sx RX UBF 1/5 UBF 2/6 Tone Generator UBF 3/7 UBF 4/8 Handsfree Sidetone Scal_Rec Digital Gain I2S1_TXD I2Sx TX Switch To Radio TX Speech level DBF 4/8 DBF 3/7 DBF 2/6 I2S_TXD DBF 1/5 From Radio RX Mix_Afe Legend: UBF= Uplink Biquad Filter DBF = Downlink Biquad Filter PCM Player Figure 51: Audio processing system of LISA-U2 series modules LISA-U2 modules audio signal processing algorithms are:
LISA-U2 series - System Integration Manual 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).
LISA-U2 series - System Integration Manual GNSS RTC sharing: Only the GPIO4 pin provides the “GNSS RTC sharing” function to provide an RTC (Real Time Clock) synchronization signal to the u-blox GNSS receiver connected to the cellular module, setting the parameter of AT+UGPIOC command to 5.
LISA-U2 series - System Integration Manual Cyclic Output / High for 100 ms, Output / Low for 100 ms, Output / High for 100 ms, Output / Low for 2 s, if registered as a visitor 2G network (roaming) Cyclic Output / High for 50 ms, Output / Low for 50 ms, Output / High for 50 ms, Output / Low for 100 ms, if registered as a visitor 3G network (roaming) Continuous Output / High, if voice or data 2G/3G call enabled The pin configured to provide the “Network status indication” function can be connected on
LISA-U2 series - System Integration Manual General purpose input: All the GPIOs can be configured as input to sense a high or low digital level through the AT+UGPIOR command, setting the parameter of the AT+UGPIOC command to 1. The “General purpose input” mode can be provided on more than one pin at a time: it is possible to simultaneously set the same mode on another pin (also on all the GPIOs). No GPIO pin is configured by default as “General purpose input”.
LISA-U2 series - System Integration Manual Pin Name Description Remarks 23 GPIO3 GPIO By default, the pin is configured to provide GNSS Data Ready function. Can be alternatively configured by the +UGPIOC command as: Output Input Network Status Indication GNSS Supply Enable Pad disabled 24 GPIO4 GPIO By default, the pin is configured to provide GNSS RTC sharing function.
LISA-U2 series - System Integration Manual Pin Name Description Remarks 57 SPI_MISO / GPIO12 SPI Data Line Output / GPIO By default, the pin is configured as SPI Data Line Output: Shift data on rising clock edge (CPHA=1) Latch data on falling clock edge (CPHA=1) Idle high Can be alternatively configured by the +UGPIOC command as: Output Input Pad disabled 58 SPI_SRDY / GPIO13 SPI Slave Ready / GPIO By default, the pin is configured as SPI Slave Ready Output: Idle low Can be alternat
LISA-U2 series - System Integration Manual u-blox GNSS 1.8 V receiver LISA-U2 series 3V8 LDO Regulator 1V8 IN GPIO2 21 GPS Supply Enable SHDN GPIO4 24 C1 GND R1 GPIO3 23 VCC OUT U1 GPS Data Ready TxD1 GPS RTC Sharing EXTINT0 R2 V_INT 4 GPIO5 51 SIM card holder R3 SW1 SIM Detection SW2 J1 R4 3V8 D1 R7 DL1 GPIO1 20 R5 Network Indicator T1 R6 Figure 52: GPIO application circuit Reference Description Part Number - Manufacturer R1 47 kΩ Resistor 0402 5% 0.
LISA-U2 series - System Integration Manual The recommended application circuit for the module status indication function, provided by LISA-U2 series module GPIO1 and GPIO13 pins to indicate module status (power-off mode, i.e. module switched off, versus idle, active or connected mode, i.e. module switched on), is described in Figure 53.
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 3V8 Ferrite Bead + 61 VCC 330µF 100nF 10nF 15pF 68pF 2 74 Rx Diversity LISA-U230 only Antenna 3V8 V_BCKP GPIO2 21 19 Ferrite Bead 47pF PWR_ON 4.
LISA-U2 series - System Integration Manual 1.15 Approvals ☞ For all the certificates of compliancy and for the complete list of approvals (including countries’ and network operators’ approvals) of LISA-U2 series modules, see our website (http://www.ublox.com/) or contact the u-blox office or sales representative nearest you.
LISA-U2 series - System Integration Manual Radio Frequency spectrum efficiency (Article 3.2): o EN 301 511 o EN 301 908-1 o EN 301 908-2 Electromagnetic Compatibility (Article 3.1b): o EN 301 489-1 o EN 301 489-52 Safety (Article 3.1a): o EN 60950-1 o 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.
LISA-U2 series - System Integration Manual 1.15.2.1 Safety warnings review the structure Equipment for building-in.
LISA-U2 series - System Integration Manual ⚠ The FCC Label shall in the above case be visible from the outside, or the host device shall bear a second label stating: o o o o o ⚠ LISA-U200: "Contains FCC ID: XPYLISAU200" resp. LISA-U201: "Contains FCC ID: XPYLISAU201" resp. LISA-U230: "Contains FCC ID: XPYLISAU230" resp. LISA-U260: "Contains FCC ID: XPYLISAU200" resp. LISA-U270: "Contains FCC ID: XPYLISAU200" resp.
LISA-U2 series - System Integration Manual 1.15.3.2 Modifications The IC 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. ⚠ Manufacturers of mobile or fixed devices incorporating the LISA-U2 modules are authorized to use the Industry Canada Certificates of the LISA-U2 modules for their own final products according to the conditions referenced in the certificates.
LISA-U2 series - System Integration Manual 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). Utilisez l’appareil de sans fil u-blox Cellular Module de façon à minimiser les contacts humains lors du fonctionnement normal.
LISA-U2 series - System Integration Manual 1.15.6 KCC Certification LISA-U200 and LISA-U270 modules are certified by the Korea Communications Commission (KCC). KCC ID for LISA-U2 modules: LISA-U200: KCC-CRM-ULX-LISA-U200 LISA-U270: KCC-CRM-ULX-LISA-U270 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-U2 series - System Integration Manual Anatel IDs for LISA-U201 modules: EAN barcode: (01)0 789 8941 57526 7 Homologation number 4466-15-5903 LISA-U201 4466-15-5903 (01)0 789 8941 57526 7 1.15.8 CCC Certification LISA-U200, LISA-U201, LISA-U230 and LISA-U270 modules are CCC approved (Chinese Compulsory Certification) 1.15.
LISA-U2 series - System Integration Manual o o T: AD120274003 R: 003-120377 xxS-xx LISA-U200 T AD120274003 R 003-120375 xxS-xx LISA-U270 T AD120274003 R 003-120377 UBX-13001118 - R25 System description Page 116 of 182
LISA-U2 series - System Integration Manual 2 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 limit. DC supply must be capable of providing 2.
LISA-U2 series - System Integration Manual All unused pins can be left floating on the application board except the PWR_ON pin (must be connected to V_BCKP by a pull-up resistor) and RSVD pin number 5 (must be connected to GND). 2.1.2 Layout checklist The following are the most important points for a simple layout check: Check the 50 nominal characteristic impedance of the RF transmission line connected to the ANT pad (main RF input/output) and to the ANT_DIV pad (RF input for Rx diversity).
LISA-U2 series - System Integration Manual 2.2 Design Guidelines for Layout The following design guidelines must be met for optimal integration of LISA-U2 modules on the final application board. 2.2.
LISA-U2 series - System Integration Manual Rank Function 1 st Pin(s) Layout Remarks RF Antenna Main RF input/output ANT Very Important Design for 50 characteristic impedance. See section 2.2.1.1 RF input for Rx diversity ANT_DIV Very Important Design for 50 characteristic impedance. See section 2.2.1.1 2nd Main DC Supply VCC Very Important VCC line should be wide and short. Route away from sensitive analog signals. See section 2.2.1.
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.
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 coplanar waveguide transmission line design for the described 4-layer board layup 400 µm 1200 µm 400 µm L1 Copper 35 µm FR-4 dielectric 1510 µm L2 Copper 35 µm Figure 58: Example of 50 coplanar waveguide transmission line design for the described 2-layer board layup
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 Ensure solid metal connection of the adjacent metal layer on the PCB stack-up to main ground layer Add GND vias around transmission line Ensure no other signals are routed parallel to transmission line, or that
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.
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. The lines are used in single-ended mode for relatively low speed signaling handshake, as well as in differential mode for fast signaling and data transfer. Characteristic impedance of USB_D+ / USB_Dlines is specified by USB standard.
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. Connect each GND pin with application board solid GND layer.
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.
LISA-U2 series - System Integration Manual 2.2.2 Footprint and paste mask The following figure describes the footprint and provides recommendations for the paste mask for LISA-U2 modules. These are recommendations only and not specifications. Note that the copper and solder masks have the same size and position. 5.7 mm [224.4 mil] 0.9 mm [35.4 mil] 2.3 mm [90.6 mil] 0.8 mm [31.5 mil] 0.6 mm [23.6 mil] 33.2 mm [1307.1 mil] 1.1 mm [43.3 mil] 2.3 mm [90.6 mil] 0.8 mm [31.5 mil] 33.2 mm [1307.
LISA-U2 series - System Integration Manual 1.3 mm 5.25 mm 5.3 mm 5.3 mm 5.25 mm 1.4 mm 1.0 mm PIN 1 Exposed GND on LISA-U module bottom layer Signals keep-out areas on application board 33.2 mm 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.
LISA-U2 series - System Integration Manual 2.3 Thermal guidelines ☞ LISA-U2 module operating temperature range and module thermal resistance 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.
LISA-U2 series - System Integration Manual Further hardware techniques to be used to improve heat dissipation in the application: Force ventilation air-flow within mechanical enclosure Provide a heat sink component attached to the module top side, with electrically insulated / high thermal conductivity adhesive, or on the backside of the application board, below the cellular module, as a large part of the heat is transported through the GND pads and dissipated over the backside of the application board
LISA-U2 series - System Integration Manual 2.4 Antenna guidelines Antenna characteristics are essential for good functionality of the module. Antenna radiating performance has direct impact on the reliability of connections over the Air Interface. A bad termination of the ANT pin (main RF input/output) and the ANT_DIV pin (RF input for diversity receiver provided by LISA-U230 modules) can result in poor performance of the module.
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. Cable or direct RF connectors are common options.
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.
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 |S21| from a target antenna to the measurement antenna, using a network analyzer with a wideband antenna. Measurements should be done at a fixed distance and orientation, and results compared to measurements performed on a known good antenna. Figure 65 through Figure 66 show some example measurement results.
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 Warrior GSM / WCDMA / LTE SMD Antenna 698..960 MHz, 1710..2170 MHz, 2300..2400 MHz, 2490..2690 MHz 40.0 x 6.0 x 5.0 mm Taoglas PA.711.
LISA-U2 series - System Integration Manual Manufacturer Part Number Product Name Description EAD FSQS35241-UF-10 SQ7 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 50.0 x 20.0 mm Table 48: Examples of internal antennas with cable and connector Table 49 lists some examples of possible external antennas.
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 µ A for 128 µ s) on ANT and measures the resulting DC voltage to evaluate the resistance from the ANT pad to GND. The antenna detection is forced by the +UANTR AT command: see the u-blox AT Commands Manual [2] for more details on how to access this feature.
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.
LISA-U2 series - System Integration Manual 2.5.2 ESD immunity test of u-blox LISA-U2 series reference designs Although Electromagnetic Compatibility (EMC) certification is required for customized devices integrating LISA-U2 modules for RED and European Conformance CE mark, EMC certification (including ESD immunity) has been successfully performed on the LISA-U2 series modules reference designs according to the CENELEC EN 61000-4-2 [11], ETSI EN 301 489-1 [12], ETSI EN 301 489-52 [13] European Norms.
LISA-U2 series - System Integration Manual 2.5.3 ESD application circuits The application circuits described in this section are recommended and should be implemented in any device that integrates a LISA-U2 module, according to the application board classification (see ETSI EN 301 489-1 [12]), to satisfy the requirements for the ESD immunity test summarized in Table 51. 2.5.3.
LISA-U2 series - System Integration Manual 2.5.3.2 RESET_N pin The following precautions are suggested for the RESET_N line of LISA-U2 modules, depending on the application board handling, to satisfy the ESD immunity test requirements: A 47 pF bypass capacitor (e.g.
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. The maximum ESD sensitivity rating of all the other pins of the module is 1 kV (Human Body Model according to JESD22-A114F). Higher protection levels could be required if the relevant pin is externally accessible on the application board.
LISA-U2 series - System Integration Manual 3 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. For a detailed description, see section 1.12 and to u-blox AT Commands Manual [2], GPIO commands. 3.
LISA-U2 series - System Integration Manual LISA-U2 modules support the Direct Link mode for TCP and UDP sockets. Sockets can be set in Direct Link mode to establish a transparent end-to-end communication with an already connected TCP or UDP socket via the serial interface. In Direct Link mode, data sent to the serial interface from an external application processor is forwarded to the network and vice-versa. To avoid data loss while using Direct Link, enable HW flow control on the serial interface. 3.4.
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. Up to 4 HTTP client contexts can be used simultaneously.
LISA-U2 series - System Integration Manual Algorithm Supported feature RSA YES10 PSK YES Table 56: Authentication Algorithm Supported feature RC4 NO11 DES YES 3DES YES10 AES128 YES AES256 YES10 Table 57: Encryption Algorithm Supported feature MD5 NO11 SHA/SHA1 YES SHA256 YES10 SHA384 YES10 Table 58: Message digest Description Registry value Supported feature TLS_RSA_WITH_AES_128_CBC_SHA 0x00,0x2F YES10 TLS_RSA_WITH_AES_128_CBC_SHA256 0x00,0x3C YES10 TLS_RSA_WITH_AES_
LISA-U2 series - System Integration Manual 3.8 Dual stack IPv4/IPv6 ☞ Not supported by the "01", "x2", "63" and "68" product versions. LISA-U2 modules support both Internet Protocol version 4 and Internet Protocol version 6. For more details about dual stack IPv4/IPv6, see the u-blox AT Commands Manual [2]. 3.9 AssistNow clients and GNSS integration For customers using u-blox GNSS receivers, the LISA-U2 cellular modules feature embedded AssistNow clients.
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: 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. The CellLocate® server defines the area of Cell A visibility 3.
LISA-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.
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. The feature allows faster position fixes, increases sensitivity and reduces module power consumption.
LISA-U2 series - System Integration Manual 3.14 In-Band modem (eCall / ERA-GLONASS) ☞ Not supported by supported by the "01", "x2", "63" and "68" product versions. LISA-U2 module supports an In-Band modem solution for eCall and ERA-GLONASS emergency call applications over cellular networks, implemented according to the 3GPP TS 26.267 [23], BS EN 16062:2011 [24] and ETSI TS 122 101 [25] specifications.
LISA-U2 series - System Integration Manual Device including SIM Mobile Equipment SAP Server Device including LISA SAP Serial Interface Application Processor SAP Serial Interface (USB SAP channel, or MUX SAP channel over UART or SPI) LISA module SAP Client GSM/UMTS Interface Local SIM Remote SIM (optional) Figure 70: Remote SIM access via completely wired connection As stated in the SIM Access Profile Interoperability Specification [21], the SAP client can be connected to the SAP server by means
LISA-U2 series - System Integration Manual 3.16 Smart Temperature Management Cellular modules – independent of 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 the operating temperature, e.g. if the device is located near a heating/cooling source, if there is/isn’t air circulating, etc.
LISA-U2 series - System Integration Manual Figure 73 shows the flow diagram implemented for the Smart Temperature Supervisor.
LISA-U2 series - System Integration Manual The temperature thresholds are defined in Table 60. Symbol Parameter Temperature Remarks t-2 Low temperature shutdown –40 °C Equal to the absolute minimum temperature rating for the cellular module (the lower limit of the extended temperature range) t-1 Low temperature warning –30 °C 10 °C above t-2 t+1 High temperature warning +77 °C 20 °C below t+2.
LISA-U2 series - System Integration Manual 3.20 Power saving The power saving configuration is disabled by default, but it can be enabled using the AT+UPSV command. When power saving is enabled, the module automatically enters the low-power idle mode whenever possible, reducing current consumption. During the low-power idle mode, the module is not ready to communicate with an external device by means of the application interfaces, since it is configured to reduce power consumption.
LISA-U2 series - System Integration Manual 4 ☞ Handling and soldering No natural rubbers, no hygroscopic materials or materials containing asbestos are employed. 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 [1] and the u-blox Package Information Guide [20].
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. Time: 60 – 120 s – If the preheat is insufficient, rather large solder balls tend to be generated.
LISA-U2 series - System Integration Manual 4.2.3 Optical inspection After soldering the LISA-U2 modules, inspect the modules optically to verify that the module is accurately aligned and centered. 4.2.4 Cleaning Cleaning the soldered modules is not recommended. Residues underneath the modules cannot be easily removed with a washing process. Cleaning with water will lead to capillary effects where water is absorbed in the gap between the baseboard and the module.
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. 4.2.9 Conformal coating Certain applications employ a conformal coating of the PCB using HumiSeal® or other related coating products.
LISA-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 production quality. This is achieved with automatic test equipment, which delivers a detailed test report for each unit.
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.
LISA-U2 series - System Integration Manual Application Processor AT Commands LISA-U2 series Wireless Antenna ANT Wideband Antenna TX IN Spectrum Analyzer or Power Meter OUT Signal Generator Application Board Application Processor AT Commands LISA-U2 series ANT Wireless Antenna Wideband Antenna RX Application Board Figure 76: Setup with spectrum analyzer and signal generator for radiated measurements This feature allows the measurement of the transmitter and receiver power levels to check
LISA-U2 series - System Integration Manual 2. Trigger TX GMSK burst at maximum PCL: o To check if the power supply is correctly assembled and is able to deliver the required current 3. Trigger TX GMSK and 8PSK burst and WCDMA signal: o To measure current consumption o To check if the module components were damaged during the soldering process or during handling (ESD, mechanical shock…) 4. Trigger RX measurement: o To test the receiver signal level.
LISA-U2 series - System Integration Manual Appendix A Migration from LISA-U1 to LISA-U2 series Migrating LISA-U1 series designs to LISA-U2 series modules is a straight-forward procedure. Nevertheless, there are some points to be considered during the migration. A.1 Checklist for migration Have you chosen the optimal module? For HSDPA category 14, 6-band 3G, Digital Audio Interfaces support, select a LISA-U230 module.
LISA-U2 series - System Integration Manual A.2 Software migration A.2.1 Software migration from LISA-U1 series to LISA-U2 series modules Software migration from LISA-U1 to LISA-U2 series cellular modules is a straight-forward procedure. Nevertheless, there are some differences to be considered with firmware versions. Like its predecessors, the LISA-U2 series cellular module supports AT commands according to 3GPP standards: TS 27.007 [4], TS 27.005 [5], TS 27.010 [6] and the u-blox AT command extension.
LISA-U2 series - System Integration Manual PWR_ON low pulse time required to switch on the module is different in comparison to LISA-U1 series modules. LISA-U2 series can be switched off forcing PWR_ON pin to the low level for at least 1 second. PWR_ON and RESET_N input voltage thresholds are slightly changed in comparison to LISA-U1 series modules, but this is not relevant driving PWR_ON and RESET_N inputs by open drain / collector drivers as recommended.
LISA-U2 series - System Integration Manual A.3.2 Pin-out comparison LISA-U1 series vs.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 10 RI UART ring indicator output RI UART ring indicator output Circuit 125 (RI) in ITU-T V.24, 1.8 V typ. LISA-U1 series: Output driver strength = 4 mA LISA-U2 series: Output driver strength = 2 mA 11 DCD UART data carrier detect output DCD UART data carrier detect output Circuit 109 (DCD) in ITU-T V.24, 1.8 V typ.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 19 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 µ s min / 80 µ s max PWR_ON switch-off low pulse time difference: LISA-U1 series: Switch-off by PWR_ON not supported LISA-U2 series: L-level pulse time = 1 s min PWR_ON operating voltage difference: LISA-U1 series: L-level input = -0.30 V min / 0.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 22 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 RESET_N operating voltage difference: LISA-U1 series: L-level input = -0.30 V min / 0.65 V max H-level input = 1.69 V min / 2.48 V max Internal 10kΩ pull-up to V_BCKP (2.3 V typ.) LISA-U2 series: L-level input = -0.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 40 MIC_P LISA-U120, LISA-U130: Differential analog audio input (pos.) LISA-U100, LISA-U110: RESERVED pin I2S1_TXD / LISA-U2 series: LISA-U120, LISA-U130: GPIO7 2nd I2S Tx data output / Differential analog audio input (pos.) GPIO LISA-U2 series: I2S1_TXD and configurable GPIO, 1.8 V typ.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 47 SIM_CLK SIM clock output SIM_CLK 48 SIM_IO SIM data input/output SIM_IO SIM data input/output No difference: Internal 4.7 kΩ pull-up resistor to VSIM. 49 SIM_RST SIM reset output SIM_RST SIM reset output No difference: Reset output for SIM card 50 VSIM SIM supply output VSIM SIM supply output No difference: VSIM output = 1.80 V typ. or 2.90 V typ. 51 GPIO5 GPIO GPIO5 GPIO Configurable GPIO, 1.8 V typ.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 55 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 µ A LISA-U2 series: SPI_CLK and configurable GPIO, 1.8 V typ.
LISA-U2 series - System Integration Manual LISA-U1 series LISA-U2 series 59 SPI_MRDY SPI Master Ready Input SPI_MRDY SPI Master Ready / Input / GPIO14 GPIO 60 GND Ground GND Ground 61…63 VCC Module supply input VCC Module supply input 64…67 GND Ground GND Ground 68 RF antenna ANT RF input/output for main Tx/Rx antenna 69…73 GND Ground GND Ground 74 RESERVED pin RSVD All except LISA-U230: RESERVED pin LISA-U1 series and all LISA-U2 series except LISA-U230: RESERVED pin Leave unc
LISA-U2 series - System Integration Manual A.3.3 Layout comparison LISA-U1 series vs. LISA-U2 series The additional signals keep-out area must be implemented on the top layer of the application board, below LISA-U2 modules, due to the GND opening on module bottom layer, as described in Figure 79 and Figure 80. 11.85 mm 5.3 mm 5.25 mm 1.4 mm 1.0 mm PIN 1 Exposed GND on LISA-U1 module bottom layer Signals keep-out area on application board 33.2 mm LISA-U1 bottom side (through module view) 22.
LISA-U2 series - System Integration Manual B Glossary Abbreviation Definition ADC Analog to Digital Converter AP Application Processor AT AT Command Interpreter Software Subsystem, or attention CBCH Cell Broadcast Channel 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 DSP Digital Signal Processing DSR Data Set Ready DTE Data Terminal Eq
LISA-U2 series - System Integration Manual Abbreviation Definition PBCCH Packet Broadcast Control Channel PCM Pulse Code Modulation PCS Personal Communications Service PFM Pulse Frequency Modulation PMU Power Management Unit RF Radio Frequency RI Ring Indicator RTC Real Time Clock RTS Request To Send RXD RX Data SAW Surface Acoustic Wave SIM Subscriber Identification Module SMS Short Message Service SMTP Simple Mail Transfer Protocol SPI Serial Peripheral Interface SRAM Stat
LISA-U2 series - System Integration Manual Related documents [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] ☞ u-blox LISA-U2 series Data Sheet, document UBX-13001734 u-blox AT Commands Manual, document 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.
LISA-U2 series - System Integration Manual Revision history Revision Date Name Comments - 21-Oct-2010 sses Initial Release 1 11-Jan-2011 sses Thickness information added. GPIO description improved 2 26-Apr-2011 lpah Update to Advance Information status 3 07-Jul-2011 lpah Update to Preliminary status A 26-Oct-2011 sses Changed status to Objective Specification.
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 u-blox America, Inc. Phone:+1 703 483 3180 E-mail: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: +65 6734 3811 E-mail: info_ap@u-blox.com Support:support_ap@u-blox.com Phone:+41 44 722 74 44 E-mail:info@u-blox.
