Page 1 System Integration Manual Abstract This document describes the features and the integration of the LISA-U1 series HSPA wireless modules. These modules are a complete and cost efficient 3.75G solution offering high-speed dual-band HSDPA/HSUPA and quad-band GSM/GPRS voice and/or data transmission technology in a compact form factor.
Page 2 LISA-U1 series - System Integration Manual Document Information Title LISA-U1 series 3.75G UMTS/HSPA Subtitle Wireless Modules Document type System Integration Manual Document number 3G.G2-HW-10002-3 Document status Preliminary Document status information Objective This document contains target values. Revised and supplementary data will be published Specification later.
Page 3: Preface
Module. How to use this Manual The LISA-U1 series System Integration Manual provides the necessary information to successfully design in and configure these u-blox wireless modules. This manual has a modular structure. It is not necessary to read it from the beginning to the end.
Page 4: Table Of Contents
System description ....................... 7 Overview .............................. 7 Architecture ............................8 1.2.1 Functional blocks ........................... 9 1.2.2 Hardware differences between LISA-U1 series modules ............... 10 Pin-out ............................... 11 Operating modes ..........................15 Power management ........................... 17 1.5.1 Power supply circuit overview ...................... 17 1.5.2...
Page 5 LISA-U1 series - System Integration Manual 1.15 Approvals ............................85 1.15.1 R&TTED and European Conformance CE mark ................85 1.15.2 IC ..............................85 1.15.3 Federal communications commission notice ................85 Design-In ........................88 Design-in checklist ..........................88 2.1.1 Schematic checklist ........................88 2.1.2...
Page 6 LISA-U1 series - System Integration Manual 4.2.4 Cleaning ............................ 119 4.2.5 Repeated reflow soldering ......................119 4.2.6 Wave soldering.......................... 119 4.2.7 Hand soldering .......................... 119 4.2.8 Rework ............................119 4.2.9 Conformal coating ........................119 4.2.10 Casting ............................120 4.2.11 Grounding metal covers ......................120 4.2.12...
Page 7: System Description
GSM to GPRS. Optionally paging messages for GSM calls can be monitored during GPRS data transfer in not-coordinating NOM II-III. LISA-U1 series modules implement GPRS/EGPRS class 12 for data transfer. GPRS class determines the number of timeslots available for upload and download and thus the speed at which data can be transmitted and received, with higher classes typically allowing faster data transfer rates.
Page 8: Architecture
LISA-U1 series - System Integration Manual 1.2 Architecture (U)SIM Card FEM & 2G PA DDC (for GPS) Transceiver UART 3G PA 26 MHz 3G PA Wireless Base-band Filter 32.768 kHz GPIO(s) Processor Memory Vcc (Supply) Power On V_BCKP (RTC) Power Management Unit...
Page 9: Functional Blocks
LISA-U1 series - System Integration Manual 1.2.1 Functional blocks LISA-U1 series modules consist of the following internal functional blocks: RF high power front-end, RF transceiver, Baseband section and Power Management Unit. RF high-power front-end A separated shielding box includes the RF high-power signal circuitry, namely:...
Page 10: Hardware Differences Between Lisa-U1 Series Modules
Power Management Unit (PMU), used to derive all the system supply voltages from the module supply VCC 32.768 kHz crystal, connected to the Real Time Clock (RTC) oscillator to provide the clock reference in idle or power off mode 1.2.2 Hardware differences between LISA-U1 series modules Hardware differences between the LISA-U1 series modules: 3G Dual-band support:...
Page 11: Pin-Out
LISA-U1 series - System Integration Manual 1.3 Pin-out Table 2 lists the pin-out of the LISA-U1 series modules, with pins grouped by function. Function Description Remarks Power 61, 62, 63 Module Supply Clean and stable supply is required: low ripple and low voltage drop must be guaranteed.
Page 12 LISA-U1 series - System Integration Manual Function Description Remarks SPI_SRDY SPI Slave Ready to Module Output: module runs as an SPI slave. transfer control line. Idle low. Master Input, See section 1.9.4 Slave Output SPI_MRDY SPI Master Ready to Module Input: module runs as an SPI slave.
Page 13 LISA-U1 series - System Integration Manual Function Description Remarks USB_D- USB Data Line D- 90 Ω nominal differential impedance Pull-up or pull-down resistors and external series resistors as required by the USB 2.0 high-speed specification [7] are part of the USB pad driver and need not be provided externally.
Page 14 LISA-U1 series - System Integration Manual Function Description Remarks Reserved RSVD RESERVED pin Do not connect (LISA-U100, See section 1.13 LISA-U110 RSVD RESERVED pin Do not connect versions only) See section 1.13 RSVD RESERVED pin Do not connect See section 1.13...
Page 15: Operating Modes
LISA-U1 series - System Integration Manual 1.4 Operating modes LISA-U1 series modules have several operating modes. Table 3 summarizes the various operating modes and provides general guidelines for operation. Operating Mode Description Features / Remarks Transition condition General Status: Power-down...
Page 16 LISA-U1 series - System Integration Manual Operating Mode Description Features / Remarks Transition condition Active-Mode Microprocessor runs with Module is switched on and is fully active. If power saving is enabled, the module 26 MHz as reference automatically enters idle mode and The application interfaces are enabled, oscillator.
Page 17: Power Management
Pins with supply function are reported in Table 4, Table 8 and Table 10. LISA-U1 series modules must be supplied via the VCC pins. There is only one main power supply input, available on the three VCC pins that must be all connected to the external power supply...
Page 18: Module Supply (Vcc)
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-U1 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 to the ISO-IEC 7816-3 specifications.
Page 19 2.25 V. 1.5.2.1 VCC application circuits LISA-U1 series modules must be supplied through the VCC pins by one (and only one) proper DC power supply that must be one of the following: Switching regulator...
Page 20 The switching step-down regulator is the typical choice when the available primary supply source has a nominal voltage much higher (e.g. greater than 5 V) than the LISA-U1 series modules operating supply voltage. The use of switching step-down provides the best power efficiency for the overall application and minimizes current drawn from the main supply source.
Page 21 LISA-U1 series - System Integration Manual output to VCC supply pins can mitigate the ripple on VCC, but adds extra voltage drop due to resistive losses on series inductors PWM mode operation: select preferably regulators with Pulse Width Modulation (PWM) mode. While in active mode Pulse Frequency Modulation (PFM) mode and PFM/PWM mode transitions must be avoided to reduce the noise on the VCC voltage profile.
Page 22 LISA-U1 series - System Integration Manual Reference Description Part Number - Manufacturer 47 µF Capacitor Aluminum 0810 50 V MAL215371479E3 - Vishay 10 µF Capacitor Ceramic X7R 5750 15% 50 V C5750X7R1H106MB - TDK 10 nF Capacitor Ceramic X7R 0402 10% 16 V...
Page 23 LISA-U1 series - System Integration Manual LISA-U1 series SHDN Figure 8: Suggested schematic design for the VCC voltage supply application circuit using an LDO linear regulator Reference Description Part Number - Manufacturer 10 µF Capacitor Ceramic X5R 0603 20% 6.3 V GRM188R60J106ME47 - Murata 10 µF Capacitor Ceramic X5R 0603 20% 6.3 V...
Page 24 LISA-U1 series - System Integration Manual Additional recommendations for the VCC supply application circuits To reduce voltage drops, use a low impedance power source. The resistance of the power supply lines (connected to the VCC and GND pins of the module) on the application board and battery pack should also be considered and minimized: cabling and routing must be as short as possible in order to minimize power losses.
Page 25: Current Consumption Profiles
LISA-U1 series - System Integration Manual 1.5.3 Current consumption profiles During operation, the current drawn by the LISA-U1 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 continuous high current drawn in UMTS connected mode, to the low current consumption during power saving in idle mode.
Page 26 LISA-U1 series - System Integration Manual Figure 11 reports the current consumption profiles in GPRS mode with 4 slots used to transmit. Current [A] 1600 mA Peak current depends on TX power 200mA ~125mA ~125mA ~25mA unused unused unused unused...
Page 27 LISA-U1 series - System Integration Manual Current [mA] 670 mA Depends on TX power 170 mA 1 slot Time 666 µs [ms] 3G frame 10 ms (1 frame = 15 slots) Figure 12: VCC current consumption profile versus time during a UMTS connection, with VCC=3.8 V When a packet data connection is established, the actual current profile depends on the amount of transmitted packets;...
Page 28 LISA-U1 series - System Integration Manual Current [mA] 2G case: ~125 mA 3G case: ~85 mA 500-700 µA Time [s] IDLE MODE ACTIVE MODE 2G case: 0.44-2.09 s Current [mA] 2G or 3G case: ~30 ms 3G case: 0.61-5.09 s...
Page 29: Rtc Supply (V_Bckp)
The RTC provides the time reference (date and time) of the module, also in power off mode, when the V_BCKP voltage is within its valid range (specified in u-blox LISA-U1 series Data Sheet [1]). The RTC timing is normally 3G.G2-HW-10002-3...
Page 30 LISA-U1 series - System Integration Manual 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. The RTC can be supplied from an external back-up battery through the V_BCKP, when the main voltage supply is not provided to the module through VCC.
Page 31: Interface Supply (V_Int)
Don’t apply loads which might exceed the limit for maximum available current from 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-U1 series Data Sheet [1]. 3G.G2-HW-10002-3...
Page 32: System Functions
VCC operating range minimum limit (3.4 V) starting from a voltage value lower than 2.25 V (See LISA-U1 series Data Sheet [1]).
Page 33 LISA-U1 series - System Integration Manual The PWR_ON pin has high input impedance and is weakly pulled to the high level on the module. Avoid keeping it floating in a noisy environment. To hold the high logic level stable, the PWR_ON pin must be connected to a pull-up resistor (e.g.
Page 34 (which is not available on a module pin) is still low and any signal from the module digital interfaces is held in reset state. The reset state of all the digital pins is reported in the pin description table of the LISA-U1 series Data Sheet [1].
Page 35 LISA-U1 series - System Integration Manual Start of interface All interfaces Start-up PWR_ON event can be set high configuration are configured V_BCKP PWR_ON V_INT Internal Reset System State Tristate / Floating Internal Reset BB Pads State Internal Reset → Operational Operational...
Page 36: Module Power Off
1.6.2 Module power off The correct way to switch off LISA-U1 series modules is by means of +CPWROFF AT command (more details in u- blox AT Commands Manual [2]): in this way the current parameter settings are saved in the module’s non- volatile memory and a proper network detach is performed.
Page 37: Module Reset
Power Management Unit and the RTC internal block: the V_INT interfaces supply is enabled and each digital pin is set in its internal reset state (reported in the pin description table in the LISA-U1 series Data Sheet [1]), the V_BCKP supply and the RTC block are enabled. Forcing an “internal” or “software” reset, the current parameter settings are saved in the module’s non-volatile memory and a proper network detach is performed.
Page 38: Rf Connection
LISA-U1 series - System Integration Manual LISA-U1 series V_BCKP Reset Rint push button RESET_N Application LISA-U1 series Processor V_BCKP Open Rint Drain Output RESET_N Figure 19: RESET_N application circuits using a push button and an open drain output of an application processor...
Page 39: U)Sim Interface
LISA-U1 series - System Integration Manual The recommendations of the antenna producer for correct installation and deployment (PCB layout and matching circuitry) must be followed. If an external antenna is used, the PCB-to-RF-cable transition must be implemented using either a suitable 50 connector, or an RF-signal solder pad (including GND) that is optimized for 50 characteristic impedance.
Page 40 6+2 or 8+2 positions if two additional pins for the mechanical card presence detection are provided. Figure 20 shows an application circuit connecting a LISA-U1 series module and a SIM card placed in a SIM card holder with 6+2 pins (as the CCM03-3013LFT R102 connector, produced by C&K Components, which provides 2 pins for the mechanical card presence detection), using the SIM detection function provided by the GPIO5 of LISA-U1 series module.
Page 41: U)Sim Functionality
LISA-U1 series - System Integration Manual Limit capacitance and series resistance on each SIM signal 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): always route the connections to keep them as short as possible 1.8.1 (U)SIM functionality...
Page 42: Serial Communication
Universal Serial Bus device class. The USB interface can be used for firmware upgrade The LISA-U1 series modules are designed to operate as an HSPA wireless modem, which represents the data circuit-terminating equipment (DCE) as described by the ITU-T V.24 Recommendation [3]. A customer application processor connected to the module through one of the interfaces represents the data terminal equipment (DTE).
Page 43: Asynchronous Serial Interface (Uart)
RS-232 standard. For detailed electrical characteristics refer to LISA-U1 series Data Sheet [1]. The LISA-U1 series modules are designed to operate as an HSPA wireless modem, which represents the data circuit-terminating equipment (DCE) as described by the ITU-T V.24 Recommendation [3]. A customer application processor connected to the module through the UART interface represents the data terminal equipment (DTE).
Page 44 LISA-U1 series - System Integration Manual The signal names of the LISA-U1 series modules UART interface conform to the ITU-T V.24 Recommendation [3]. UART interfaces include the following lines: Name Description Remarks Data set ready Module output Circuit 107 (Data set ready) in ITU-T V.24...
Page 45 Figure 17, each pin is first tri-stated and then is set to its relative internal reset state that is reported in the pin description table in LISA-U1 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 46 LISA-U1 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 47 LISA-U1 series - System Integration Manual DSR signal behavior If AT&S0 is set, the DSR module output line is set by default to ON state (low level) at UART initialization and is then always held in the ON state. If AT&S1 is set, the DSR module output line is set by default to OFF state (high level) at UART initialization. The DSR line is then set to the OFF state when the module is in command mode or in online command mode and is set to the ON state when the module is in data mode.
Page 48 LISA-U1 series - System Integration Manual DCD line will be kept to ON till the SMS command execution is completed (even if the data call release would request the DCD setting to OFF). RI signal behavior The RI module output line is set by default to the OFF state (high level) at UART initialization. Then, during an...
Page 49 LISA-U1 series - System Integration Manual 1.9.2.3 UART and power-saving The power saving configuration is controlled by the AT+UPSV command (for the complete description please refer to u-blox AT Commands Manual [2], AT+UPSV command). When power saving is enabled, the module automatically enters idle-mode whenever possible, otherwise the active-mode is maintained by the module.
Page 50 LISA-U1 series - System Integration Manual If the module is registered with a 2G network, the paging reception period can vary from ~0.47 s (DRX = 2, i.e. 2 x 51 2G-frames) up to ~2.12 s (DRX = 9, i.e. 9 x 51 2G-frames) If the module is registered with a 3G network, the paging reception period can vary from 0.64 s (DRX = 6,...
Page 51 LISA-U1 series - System Integration Manual AT+UPSV=2: power saving enabled and controlled by the RTS line If the RTS line is set to OFF by the DTE the module is allowed to enter idle-mode as for UPSV=1 case. Instead, the UART is disabled as long as RTS line is set to OFF.
Page 52 LISA-U1 series - System Integration Manual Active mode is held for 2000 GSM frames (~9.2 s) CTS OFF CTS ON time Wake up time: up to 15.6 ms module input Wake up character time Not recognized by DCE Figure 25: Wake-up via data reception without further communication Figure 26 shows the case where in addition to the wake-up character further (valid) characters are sent.
Page 53 LISA-U1 series - System Integration Manual 1.9.2.4 UART application circuits Providing the full RS-232 functionality (using the complete V.24 link) For complete RS-232 functionality conforming to ITU Recommendation [3] in DTE/DCE serial communication, the complete UART interface of the module (DCE) must be connected to the DTE as described in Figure 27.
Page 54 LISA-U1 series - System Integration Manual Providing the TxD, RxD, RTS and CTS lines only (not using the complete V.24 link) If the functionality of the DSR, DCD, RI and DTR lines is not required in the application, or the lines are not...
Page 55 LISA-U1 series - System Integration Manual Providing the TxD and RxD lines only (not using the complete V24 link) If the functionality of the CTS, RTS, DSR, DCD, RI and DTR lines is not required in the application, or the lines...
Page 56: Usb Interface
1.9.3 USB interface LISA-U1 series modules provide a high-speed USB interface at 480 Mb/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.
Page 57 PID = 0x1101 If the USB interface of LISA-U1 series module 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 runtime, after the USB detection.
Page 58: Spi Interface
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-U1 series modules provide two handshake signals (SPI_MRDY and SPI_SRDY), added to the standard 3- wire SPI interface, implementing the 5-wire Inter Processor Communication (IPC) interface.
Page 59 The module runs as an SPI slave, i.e. it accepts AT commands on its SPI interface without specific configuration. The SPI-device shall look for all upper-SW-layers like any other serial device. This means that LISA-U1 series modules emulate all serial logical lines: the transmission and the reception of the data are similar to an asynchronous device.
Page 60 Slave ended data transfer Slave initiated transfer with a sleeping master SPI_MRDY SPI_SRDY Header Data Header DATA EXCHG Figure 32: Data transfer initiated by LISA-U1 series module (slave), with a sleeping application processor (master) 3G.G2-HW-10002-3 Preliminary System description Page 60 of 125...
Page 61 Header DATA EXCHG Figure 33: Data transfer initiated by application processor (master) with a sleeping LISA-U1 series module (slave) When the slave is sleeping (idle mode), the following actions happen: 1. The Master wakes the slave by setting the SPI_MRDY line active 2.
Page 62 LISA-U1 series - System Integration Manual 1. In case of the last transfer, the master will lower its SPI_MRDY line. After the data-transfer is finished the line must be low. If the slave has already set its SPI_SRDY line, the master must raise its line to initiate the next transfer (slave-waking-procedure) 2.
Page 63: Mux Protocol (3Gpp 27.010)
GPS receiver. Combining a LISA-U1 series wireless module with a u-blox GPS receiver allows designers to have full access to the GPS receiver directly via the wireless module: it relays control messages to the GPS receiver via a dedicated DDC (I C) interface.
Page 64: Ddc Application Circuit
1.10.2 DDC application circuit The DDC (I C) interface of the LISA-U1 series modules is used only to connect the wireless module to a u-blox GPS receiver: the DDC (I C) interface is enabled by the AT+UGPS command only (for more details refer to u-blox AT Commands Manual [2]).
Page 65 Table 25: Components for DDC application circuit for u-blox 1.8 V GPS receiver If a 3 V u-blox GPS receiver is used, the SDA, SCL pins of the LISA-U1 series wireless module cannot be directly connected to the 3 V u-blox GPS receiver. An application circuit for the connection of a LISA-U1 series wireless module to a u-blox 3.0 V GPS receiver is illustrated in Figure 37.
Page 66 Table 26: Components for DDC application circuit for u-blox 3.0 V GPS receiver The following functions will be available in the upcoming FW version of LISA-U1 series modules: GPIO3 pin will provide the “GPS data ready” function (parameter <gpio_mode> of AT+UGPIOC command set to 4 by default), to sense when the u-blox GPS receiver connected to the wireless module is ready to send data by the DDC (I2C) interface.
Page 67: Audio Interface (Lisa-U120 And Lisa-U130 Only)
LISA-U1 series - System Integration Manual The “GPS data ready” function will provide an improvement in the power consumption of the wireless module. When power saving is enabled in the wireless module by the AT+UPSV command and the GPS receiver doesn’t send data by the DDC (I C) interface, the module automatically enters idle-mode whenever possible.
Page 68 There is no microphone supply pin available on the module: an external low noise LDO voltage regulator should be added to provide a proper supply for a microphone. Detailed electrical characteristics of the differential analog audio input can be found in the LISA-U1 series Data Sheet [1].
Page 69 LISA-U1 series - System Integration Manual All corresponding differential audio lines must be routed in pairs, be embedded in GND (have the ground lines as close as possible to the audio lines), and maintain distance from noisy lines such as VCC and from components such as switching regulators.
Page 70 LISA-U1 series - System Integration Manual Reference Description Part Number - Manufacturer R1, R2, R3, R4 2.2 kΩ Resistor 0402 5% 0.1 W RC0402JR-072K2L - Yageo Phycomp Low Noise LDO Linear Regulator 2.5 V 300 mA LT1962EMS8-2.5#PBF- Linear Technology Table 28: Example of components for headset jack connection 1.11.1.4 Handset mode...
Page 71 LISA-U1 series - System Integration Manual 1.11.1.5 Hands-free mode The hands-free profile is configured when the uplink audio path is set to “Hands-free microphone” and the downlink audio path is set to “Loudspeaker” (refer to u-blox AT commands manual [2]: AT+USPM command: <main_uplink>, <main_downlink>...
Page 72 LISA-U1 series - System Integration Manual Reference Description Part Number - Manufacturer C1, C2, C3, C4 27 pF Capacitor Ceramic COG 0402 5% 25 V GRM1555C1H270JZ01 - Murata C5, C6, C7, C10 10 µF Capacitor Ceramic X5R 0603 20% 6.3 V...
Page 73 DC-block 10 µF series capacitor (e.g. Murata GRM188R60J106M) to decouple the bias present at the module output (see SPK_P / SPK_N common mode output voltage in the LISA-U1 series Data Sheet [1]). Use a suitable power-on sequence to avoid audio bump due to charging of the capacitor: the final audio stage should be always enabled as last one.
Page 74: Digital Audio Interface
LISA-U1 series - System Integration Manual Audio Device LISA-U120/U130 SPK_P Positive Analog IN SPK_N Negative Analog IN Reference MIC_P Positive Analog OUT MIC_N Negative Analog OUT Reference Audio Device LISA-U120/U130 SPK_P Analog IN SPK_N Reference MIC_P Analog OUT MIC_N Reference...
Page 75 LISA-U1 series - System Integration Manual If the I S digital audio pins are not used, they can be left unconnected on the application board. The I S interface can be can be used in two modes: PCM mode Normal I...
Page 76: Voiceband Processing System
LISA-U1 series - System Integration Manual I2S_TX data are composed of 16 bit words, dual mono (the words are written on both channels). Data are in 2’s complement notation. MSB is transmitted first. The bits are written on I2S_CLK rising or falling edge (configurable) I2S_RX data are read as 16 bit words, mono (words are read only on the timeslot with WA high).
Page 77 LISA-U1 series - System Integration Manual These three blocks are connected by buffers (circular buffer and voiceband sample buffer) and sample rate converters (for 8 / 16 to 47.6 kHz conversion) as illustrated in the block diagram in Figure 42, which summarizes the voiceband audio processing in the DSP.
Page 78: General Purpose Input/Output (Gpio)
1.12 General Purpose Input/Output (GPIO) The LISA-U1 series modules provide 5 pins (GPIO1, GPIO2, GPIO3, GPIO4 and GPIO5) 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 refer to u-blox AT Commands Manual [2], +UGPIOC, +UGPIOR, +UGPIOW, +UGPS, +UGPRF).
Page 79 LISA-U1 series - System Integration Manual The “Network status indication” mode can be provided only on one pin per time: it is not possible to simultaneously set the same mode on another pin. The pin configured to provide the “Network status indication” function is set as...
Page 80 LISA-U1 series - System Integration Manual Name Description Remarks GPIO1 GPIO By default, the pin is configured as Pad disabled. Can be alternatively configured by the AT+UGPIOC command as Output Input Network Status Indication GPS Supply Enable GSM Tx Burst Indication...
Page 81: Gpio Functions Available In Upcoming Fw Version
Table 34: Components for GPIO application circuit 1.12.1 GPIO functions available in upcoming FW version The following two functions will be available in the upcoming FW version of LISA-U1 series modules: GPS data ready: Only the GPIO3 pin will provide the “GPS data ready” function, to sense when the u-blox GPS receiver...
Page 82 LISA-U1 series - System Integration Manual AT+UGPS command is set to 1 and the parameter <GPS_IO_configuration> of AT+UGPRF command is set to 16 Tri-state with an internal active pull-down enabled, otherwise (default setting) The pin that provides the “GPS data ready” function must be connected to the data ready output of the u-blox GPS receiver (i.e.
Page 83: Reserved Pins (Rsvd)
LISA-U1 series - System Integration Manual 1.13 Reserved pins (RSVD) LISA-U1 series modules have pins reserved for future use. All the RSVD pins, except pin number 5, can be left unconnected on the application board. The application circuit is illustrated in Figure 44.
Page 84: Schematic For Lisa-U1 Series Module Integration
LISA-U1 series - System Integration Manual 1.14 Schematic for LISA-U1 series module integration Figure 45 is an example of a schematic diagram where a LISA-U1 series module is integrated into an application board, using all the interfaces of the module.
Page 85: Approvals
LISA-U1 series - System Integration Manual 1.15 Approvals LISA-U1 series modules have been or will be approved under the following schemes: [EU] R&TTE (Radio and Telecommunications Terminal Equipment Directive) [EU] CE (Conformité Européenne) [EU] GCF – CC (Global Certification Forum-Certification Criteria including Field Trials) [EU] GCF –...
Page 86 Manufacturers of mobile or fixed devices incorporating the LISA-U1 series modules are authorized to use the FCC Grants and Industry Canada Certificates of the LISA-U1 series modules for their own final products according to the conditions referenced in the certificates.
Page 87 Additional Canadian information on RF exposure also can be found at the following web address: http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf08792.html IMPORTANT: Manufacturers of portable applications incorporating the LISA-U1 series modules are required to have their final product certified and apply for their own FCC Grant and Industry Canada Certificate related to the specific portable device.
Page 88: Design-In
LISA-U1 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 VCC pin above the minimum operating range limit.
Page 89: Antenna Checklist
LISA-U1 series - System Integration Manual  The high-power audio outputs lines on the application board must be wide enough to minimize series resistance.  Ensure proper grounding.  Consider “No-routing” areas for the Data Module footprint.  Optimize placement for minimum length of RF line and closer path from DC source for VCC.
Page 90: Design Guidelines For Layout
LISA-U1 series - System Integration Manual 2.2 Design Guidelines for Layout The following design guidelines must be met for optimal integration of LISA-U1 series modules on the final application board. 2.2.1 Layout guidelines per pin function This section groups LISA-U1 series modules pins by signal function and provides a ranking of importance in layout design.
Page 91 LISA-U1 series - System Integration Manual Rank Function Pin(s) Layout Remarks RF Antenna In/out Very Important Design for 50 characteristic impedance. See section 2.2.1.1 Main DC Supply Very Important VCC line should be wide and short. Route away from sensitive analog signals.
Page 92 LISA-U1 series - System Integration Manual Buried striplines exhibit better shielding to external and internally generated interferences. They are therefore preferred for sensitive application. In case a stripline is implemented, carefully check that the via pad-stack does not couple with other signals on the crossed and adjacent layers Minimize the transmission line length;...
Page 93 The Layer 1 (top layer, see Figure 48) provides a micro strip line to connect the ANT pin of the LISA-U1 series module to the antenna connector. The ANT pin of the LISA-U1 series module must be soldered on the designed pad which is connected to the antenna connector by a micro strip.
Page 94 LISA-U1 series - System Integration Manual Figure 49: Layer 2 (inner layer) of u-blox approved interface board for LISA-U1 series modules The dielectric thickness (FR4 Laminate 7628) from Layer 2 (inner layer) to Layer 3 (inner layer) is 0.76 mm.
Page 95 2.2.1.2 Main DC supply connection The DC supply of LISA-U1 series modules is very important for the overall performance and functionality of the integrated product. For detailed description, check the design guidelines in section 1.5.2. Some main characteristics are:...
Page 96 2.2.1.3 USB signal The LISA-U1 series modules include a high-speed USB 2.0 compliant interface with a maximum throughput of 480 Mb/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.
Page 97 2.2.1.6 Other sensitive pins A few other pins on the LISA-U1 series modules requires careful layout. RTC supply (V_BCKP): avoid injecting noise on this voltage domain as it may affect the stability of sleep oscillator 3G.G2-HW-10002-3...
Page 98 SIM Card Interface (VSIM, SIM_CLK, SIM_IO, SIM_RST): the SIM layout may be critical if the SIM card is placed far away from the LISA-U1 series modules or in close proximity to the RF antenna. In the first case the long connection can cause the radiation of some harmonics of the digital data frequency. In the second case the same harmonics can be picked up and create self-interference that can reduce the sensitivity of GSM Receiver channels whose carrier frequency is coincidental with harmonic frequencies.
Page 99: Footprint And Paste Mask
(e.g. soldering etc.) of the customer. The bottom layer of LISA-U1 series modules shows an unprotected copper area for GND described in Figure 53. Consider “No-routing” area for the LISA-U1 series modules footprint as follows: signals keep-out area on the top layer of the application board, below LISA-U1 series modules, due to GND opening on module bottom layer (see Figure 53).
Page 100: Placement
(through module view) 22.40 mm Figure 53: Signals keep-out area on the top layer of the application board, below LISA-U1 series modules 2.2.3 Placement Optimize placement for minimum length of RF line and closer path from DC source for VCC.
Page 101: Thermal Aspects
During transmission at maximum RF power the LISA-U1 series modules generate thermal power that can exceed 2 W: this is an indicative value since the exact generated power strictly depends on operating condition such as the number of allocated TX slot and modulation (GMSK or 8PSK) or data rate (WCDMA), transmitting frequency band, etc.
Page 102: Antenna Guidelines
Impedance 50 Ω nominal characteristic impedance Frequency Range Depends on the LISA-U1 series module HW version and on the Mobile Network used. LISA-U100/U120: - GSM 850: 824..894 MHz = UMTS B5: 824..894 MHz - GSM 1900: 1850..1990 MHz = UMTS B2: 1850..1990 MHz LISA-U110/U130: - GSM 900: 880..960 MHz = UMTS B8: 880..960 MHz...
Page 103: Antenna Termination
2.4.1 Antenna termination The LISA-U1 series modules are designed to work on a 50 load. However, real antennas have no perfect 50 load on all the supported frequency bands. Therefore, to reduce as much as possible performance degradation...
Page 104: Antenna Radiation
LISA-U1 series - System Integration Manual Figure 55: |S | sample measurement of a wideband antenna 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. Measurements should be done at a fixed distance and orientation, and results compared to measurements performed on a known good antenna.
Page 105: Antenna Detection Functionality
LISA-U1 series - System Integration Manual Figure 57: |S | and |S | comparison between a 900 MHz tuned half wavelength dipole (green/purple) and a wideband commercial antenna (yellow/cyan) Instead if |S | values for the tuned dipole are much better than the antenna under evaluation (like for marker 1/2 area of Figure 57, where dipole is 5 dB better), then it can be argued that the radiation of the target antenna (the wideband dipole in this case) is considerably less.
Page 106 LISA-U1 series - System Integration Manual Radiating Element Coaxial Antenna Cable Blocking Blocking Front-End Zo=50 Ω RF Module Choke Choke Resistor for Diagnostic Current Source Diagnostic Circuit LISA-U1 series Application Board Antenna Assembly Figure 58: Antenna detection circuit and antenna with diagnostic resistor...
Page 107 LISA-U1 series - System Integration Manual Reported values close to the used diagnostic resistor nominal value (i.e. values from 13 kΩ to 17 kΩ if a 15 kΩ diagnostic resistor is used) indicate that the antenna is properly connected Values close to the measurement range maximum limit (approximately 50 kΩ) or an open-circuit “over range”...
Page 108: Esd Immunity Test Precautions
LISA-U1 series - System Integration Manual 2.5 ESD immunity test precautions The immunity of the device (i.e. the application board where LISA-U1 series module is mounted) to the EMS phenomenon Electrostatic Discharge must be certified in compliance to the testing requirements standard [10] and the requirements for radio and digital cellular radio telecommunications system equipment standards [11] [12].
Page 109: General Precautions
LISA-U1 series - System Integration Manual Category Application Immunity Level Contact Discharge to coupling planes (indirect contact discharge) Enclosure +2 kV / -2 kV +4 kV / -4 kV Contact Discharges to conducted surfaces (direct contact discharge) Enclosure port Not Applicable...
Page 110: Antenna Interface Precautions
LISA-U1 series - System Integration Manual LISA-U1 series V_BCKP Reset Rint push button RESET_N Application LISA-U1 series Processor V_BCKP Open Rint Drain Output RESET_N Figure 59: RESET_N application circuits for ESD immunity test Reference Description Remarks Varistor for ESD protection.
Page 111: Module Interfaces Precautions
LISA-U1 series - System Integration Manual If the device implements an external antenna and the antenna or its connecting cable are not provided with completely insulating enclosure to avoid air discharge up to +8 kV / -8 kV to the whole antenna and cable surfaces, the following precautions to ESD immunity test should be implemented on the application board A higher protection level is required at the ANT port if the line is externally accessible on the application board.
Page 112: Features Description
3 Features description 3.1 Firmware (upgrade) Over AT (FOAT) LISA-U1 series modules will support this feature in the upcoming FW version. 3.2 TCP/IP Via the AT commands it’s possible to access the TCP/IP functionalities over the GPRS connection. For more details about AT commands see the u-blox AT Commands Manual [2].
Page 113: Assistnow Clients And Gps Integration
/ disabled with an AT command. LISA-U1 series modules act as a stand-alone AssistNow client, making AssistNow available with no additional requirements for resources or software integration on an external host micro controller. Full access to u-blox GPS...
Page 114: Smart Temperature Supervisor (Sts)
The user can decide at anytime to enable/disable the Smart Temperature Supervisor feature. If the feature is disabled there is no embedded protection against disallowed temperature conditions. Figure 62 shows the flow diagram implemented in the LISA-U1 series modules for the Smart Temperature Supervisor.
Page 115 LISA-U1 series - System Integration Manual IF STS enabled Feature enabled Feature disabled: (full logic or no action indication only) Read temperature <Ti<t Temperature is within normal operating range Previously outside of Safe Area further actions <Ti<t Tempetature Tempetature Tempetature is...
Page 116: Threshold Definitions
(*) LISA-U1 module mounted on a 90 mm x 70 mm x 1.46 mm 4-Layers PCB with a high coverage of copper within climatic chamber Table 41: thresholds definition for Smart Temperature Supervisor on the LISA-U1 series modules The sensor measures board temperature inside the shields, which can differ from ambient temperature.
Page 117: 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-U1 series Data Sheet [1]. The LISA-U1 series modules are Electro-Static Discharge (ESD) sensitive devices.
Page 118 60 - 120 s Typical Leadfree Soldering Profile Elapsed time [s] Figure 63: Recommended soldering profile When soldering lead-free LISA-U1 series modules in a leaded process, check the following temperatures: PB- Technology Soaktime: 40-80 s Time above Liquidus: 40-90 s Peak temperature: 225-235°C...
Page 119: Optical Inspection
Certain applications employ a conformal coating of the PCB using HumiSeal or other related coating products. These materials affect the HF properties of the LISA-U1 series modules and it is important to prevent them from flowing into the module. The RF shields do not provide 100% protection for the module from coating liquids with low viscosity, therefore care is required in applying the coating.
Page 120: Casting
EMI covers is done at the customer's own risk. The numerous ground pins should be sufficient to provide optimum immunity to interferences and noise. u-blox gives no warranty for damages to the LISA-U1 series modules caused by soldering metal cables or any other forms of metal strips directly onto the EMI covers.
Page 121: Product Testing
LISA-U1 series - System Integration Manual 5 Product Testing 5.1 u-blox in-series production test u-blox focuses on high quality for its products. All units produced are fully tested. Defective units are analyzed in detail to improve the production quality. This is achieved with automatic test equipment, which delivers a detailed test report for each unit. The following measurements are done: Digital self-test (Software Download, verification of FLASH firmware, etc.)
Page 122: Appendix
LISA-U1 series - System Integration Manual Appendix A Glossary 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 Data Communication Equipment...
Page 123 LISA-U1 series - System Integration Manual Inter Processor Communication Low Noise Amplifier Modulation Coding Scheme Network Operating Mode Power Amplifier PBCCH Packet Broadcast Control Channel Pulse Code Modulation Personal Communications Service Pulse Frequency Modulation Power Management Unit Radio Frequency Ring Indicator...
Page 124: Related Documents
LISA-U1 series - System Integration Manual Related documents u-blox LISA-U1 series Data Sheet, Docu No 3G.G1-HW-10001 u-blox AT Commands Manual, Docu No WLS-SW-11000 ITU-T Recommendation V.24, 02-2000. List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE).
Page 125: Contact
LISA-U1 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:...

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Ublox LISA-U1 Series System Integration Manual

Preface

Contents

2 Design-In

3 Features Description

4 Handling and Soldering

5 Product Testing

Appendix

A Glossary

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