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leon g100 g200 at commands manualDiscover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Report this Document Download now Save Save Leon-g100 g200 at Commands Manual Gsm.g1-Sw-09002-. For Later 0 ratings 0 found this document useful (0 votes) 11 views 1 page Leon-g100 g200 at Commands Manual Gsm.g1-Sw-09002-2 Uploaded by Jay Mann Description: Full description Save Save Leon-g100 g200 at Commands Manual Gsm.g1-Sw-09002-. For Later 0 0 found this document useful, Mark this document as useful 0 0 found this document not useful, Mark this document as not useful Embed Share Print Download now Jump to Page You are on page 1 of 1 Search inside document Scribd members can read and download full documents. Your first days are free. Continue Reading with Trial Share this document Share or Embed Document Sharing Options Share on Facebook, opens a new window Share on Twitter, opens a new window Share on LinkedIn, opens a new window Share with Email, opens mail client Copy Text Footer Menu Back To Top About About Scribd Press Our blog Join our team. Browse Books Site Directory Site Language: English Change Language English Change Language Quick navigation Home Books Audiobooks Documents, active. They can be downloaded from www.u-blox.com. u-blox makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice.Reproduction, use or disclosure to third parties without express permission is strictly prohibited. Copyright 2010, u-blox AG. In addition to our product-specific technical data sheets, the following manuals are available to assist u-blox customers in product design and development. System Integration Manual: This Manual provides hardware design instructions and information on how to set up production and final product tests.
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For navigating this document please note the following: This manual has a modular structure. It is not necessary to read it from the beginning to the end. The following symbols are used to highlight important information within the manual: An index finger points out key information pertaining to module integration and performance. A warning symbol indicates actions that could negatively impact or damage the module. QuestionsIf you have any questions about u-blox Wireless Hardware Integration, please: Read this manual carefully. Contact our information service on our homepage Read the questions and answers on our FAQ database Technical SupportWorldwide Web Our website (www.u-blox.com) is a rich pool of information. Product information, technical documents and helpful FAQ can be accessed 24h a day. By E-mail If you have technical problems or cannot find the required information in the provided documents, contact the nearest of the Technical Support offices by email. Use our service pool email addresses rather than any personal email address of our staff. This makes sure that your request is processed as soon as possible. You will find the contact details at the end of the document. Advance Information This document contains dat a based on early testing. Revised and supplementar y data will be published later. Preliminary This document contains dat a from product verification. Revised and supplementa ry data may be published later. The y can be downloade d from www.u-blox.com. u-blox makes no wa rranties based on the accuracy or completeness of the contents of this document and rese rves the right to mak e changes to specifications and product descriptions at any time withou t notice.Reproduction, use or disclosure to third parties without express permission is strictly prohibited. All other registe red trademarks or trademarks mentione d in this document are property of their respe ctive owners. I n addition t o our product -specific techn ical data sheets, t he following manua ls are available to assist u -blox customers in product design and develo pment. System Int egration Manual: This M anual prov ides hardw are design instructions and i nformation on how t o set up production and f inal product tests. Application No te: do cument provides general des ign instructions a nd informat ion that applies to all u -blox Wireless modules. See Section Related documents for a list of Application Notes related to your Wireless Module. This manual has a modu lar structure. It is not necessar y to read it from the beginning t o the end. The following symbols are u sed to highlight important information within the ma nual: An index finger points out k ey information perta ining to module integration and per formance. A warning sym bol indicates actio ns that cou ld negatively im pact or dam age the modu le. Questions If you have any question s about u-b lox Wireless Integration, plea se. Read this manual carefully. ? Contact our information ser vice on the homepage. Read the questions and answ ers on our FAQ dat abase on the homepage Technical Support Worldwid e Web Our w ebsite (www.u-blox.com) is a r ich pool of infor mation. P roduct information, technica l document s an d helpful FAQ can be accessed 24h a day. By E-mail Contact the nearest of the Technical Support offices by ema il. Use our service pool email addresses rather t han any personal ema il address of our sta ff. This mak es sure that your request is processed as soon as possi ble. You will find the contact deta ils at the end of the document. Helpful Inform ation when Co ntacting Technical Support When contacting Technical S upport please have the follow ing information ready. Module type (e.g. LEON-G 100) and firmw are version. Module configuration. Clear description of your qu estion or the problem. A short description of the ap plication. Your complete contact deta ils. GPRS multi-slot class 10.https://ayurvedia.ch/dell-studio-1535-manual All GPRS coding scheme s from CS1 to CS4 are supported. Bearer service fax G roup 3 Class 2.0 support ? Class B Mobile S tations (i.e. the data module can be attached t o both GPRS and GSM services, using one service at a time). Network operation modes I to III are supported GPRS multi-s lot class determines the maximum n umber of timesl ots available for upload and dow nl oad and thu s the speed at w hich dat a can be transmitted a nd received: higher classes typ ically allo w faster data transfer rates. GPRS mult i-slot class 1 0 uses a maximum of 4 s lots in dow nload (rece ption) and 2 slots in upload (transmission), with 5 slots in total. The network automatically configures the number of timeslots used for reception or transmission (voice ca lls take precedence over GP RS traffic). T he network also automatically confi gures channel encod ing (CS1 to CS4). The maximum GPRS b it rate of the mob ile station depends on the cod ing scheme and nu mber of time slots. RF ? Baseband ? Power Management 1.2.1.1 RF The RF block is composed of the follow ing main elements. RX diplexer SAW (band pass) f ilters ? 26 MHz cr ystal, connecte d to the digital contro lled crysta l oscillator to perform the clock reference in active or connected mode 1.2.1.2 Baseband The Baseband block i s composed of the fo llowing main elements. Memory system in a mult i-chip package integrat ing two devices: NOR flash non-volatile mem ory; PSRAM volatile memory; ? 32.768 kHz crystal, connected to the oscillator of the RTC to per form the cloc k reference in idle or power- off mode 1.2.1.3 Pow er Management The Power Manage ment block is compo sed of the following main e lements. Charging control circuitry. Charging control circuitry i s available on the LEON -G200 module only. Voltage provided ha s to be always above the minimum limit of the operating range. Consider that there are large current spike in connected mode, whe n a GSM call is enabled. See section 1.5.5 VSIM 35 O SIM supply SIM supply automatically ge nerated by the module. The external supply used as charging source must be voltage and curre nt limited. The external supply use d as charging source must be voltage and curre nt limited. Add a test point to provide access to the pin for debugging. See section 1.10.2. Ex ternal pull-up required. See section 1.9.2 ADC ADC1 (LEON-G100- xx) 5 I ADC input Resolution: 12 bits. Do not keep floating in noisy environment: external pull-up required. Table 2 summarizes the va rious operating modes and pr ovides general guidel ines for operation. Microprocessor switched off (not operating). Module is switched off. Application interfaces a re not accessible. Power-Off Mode VCC supply within norma l operating range. Microprocessor not operating. Only internal RTC time r in operation. General Status: Normal Operati on Idle-Mode Microprocessor runs with 32 kHz as reference oscillato r. Module does not a ccept data signals from an e xternal device. If power saving is ena bled, the module automatically ente rs idle mode whenever possible. If hardware flow control is e nabled, the CTS line indicates tha t the module is in active-mode and the UART interface is enabled: the line is driven in the OFF state when the mod ule is not prepared to accept data by the UART interface. If hardware flow control is disa bled, the CTS line is fixed to ON state. If the module is regist ered with the network and power sa ving is enabled, it automatically ente rs idle mode and periodically wake s up to active mode to monitor the paging channe l for the paging block reception a ccording to network indication. If module is not registe red with the network and power sa ving is enabled, it automatically ente rs idle mode and periodically wake s up to monitor external activity. Module wakes up from idle-mode to active-mode for an incoming voice or data call. Module wakes up from idle mode to active mode if an RTC alarm occurs. The module is rea dy to accept data signals from an e xternal device. Module is switched on and is fully active: power saving is not ena bled. The application int erfaces are enabled. Microprocessor runs with 26 MHz as reference oscillator. Module is fully active. Application interfaces a re enabled. When call terminate s, module returns to the last operating sta te (Idle or Active). General Status: Charging (LEON-G200 only) Pre-charge mode Battery connected to VCC. Battery voltage level is below the VCC normal opera ting range. Charging of the dee ply discharged battery is enabled while the module is switched off. Module is switched off a nd cannot be switched on (not powere d mode). Charge-mode Battery connected to VCC. Battery voltage level is within the VCC normal opera ting range. Charging process ena bled while the module is switched on and normal opera tions are enabled. Microprocessor runs with 32 kHz or 26 MHz as reference oscillator. Module is switched on a nd normal operations are enable d (Idle mode, Active mode or Conne cted mode). Table 2: Module operati ng modes summary. This is the only main power supp ly pin. VCC pi n c onnects the RF Pow er Amplifier and the integra ted power management unit within t he mod ule: all supply voltages needed by the module are genera ted from the VCC supply by inte grated voltage regulators. Activation an d deactivation of the SIM interfa ce w ith automatic voltage switch f rom 1.8 t o 3 V is implemented, in accordance to the ISO- IEC 78- 16 -e spec ifications. The integrated pow er management unit also provides the control state machine fo r syste m start up, including start up with dischar ged batteries, pre -charging and system r eset control. This is achieve d by har dware design utilizing p ower ef ficient circuit topology, and by pow er management software contr olling the po wer sav ing configuration of the modu le. Battery manag ement runs in t he context of the operation and maintena nce process. Battery charging control, in order to maintain the ful l capacity of t he battery. Collecting and processing of measurements of batter y voltage. Voltages must be stable, due to the surg ing consumption prof ile of the GS M system (described in t he section 1.5.3 ). Name Description Remarks VCC Module Supply Clean and stable supply is required: low ripple and low voltage drop must be guara nteed. Consider that there are large current spike in connected mode, when a GSM call is enabled. GND Ground GND pins are intern ally connected but good (low impedance) external ground ca n improve RF performances: all GND pins must be externally connected to ground. Table 3: Module supply pins VCC pin ESD sensitivity ratin g is 1 kV (HBM JE SD22- A114F). A higher protection leve l cou ld be r equired if the line is externally accessible on the application bo ard. A higher protect ion lev el ca n be achieved mounting an ESD protection (e.g. EP COS CA0 5P4S14THS G varistor array) on the l ine connected to this pin if it is externally accessibl e on the application board. Complete functionality of the module is only guaranteed within the specified operational normal voltage ra nge. The mod ule cannot be switched on if t he V CC voltage value i s below the specified normal operating range min imum limit: ens ure that the input voltage at V CC pin is above the mi nimum limit of the normal operating range for more than 1 second after t he start of the sw itch -on of the module. Module reliability is only guaranteed within the specified operational extended voltage range. The module switches off when VCC vo ltage value drops below the specified e xtended oper ating range minimum limit: ensure that the input voltage at VCC pin never drops below the minimum limit of the extended operating range w hen the module is switched on, not even during a GSM transmit burst, where the current consumption can rise up to maxim um peaks of 2.5 A in ca se of a mismatched antenna load. Operation above the ex tended operating rang e maximum lim it is not recommended and extended exposure be yond it may a ffect device reli ability. Stress beyond the VCC absolute m aximum ratings m ay cause perm anent damag e to the module: if necess ary, voltage sp ikes beyond VCC abso lute maximum ratings m ust be limited to values within the specified bo undaries by usin g appropria te protection. The DC pow er supply has to be able to provide a vo ltage profile to the VCC pin w ith the following characteristics: o Voltage drop during transmi t slots has to be lowe r than 400 mV o Undershoot and overshoot at the start and at the end of transmit s lots have to be not pre sent o Voltage ripple during transm it slots has to be. Switching regulator. Low Drop-Out (LDO) l inear regulator. Rechargeable Li-Ion batt ery. The use of sw itching step- down provides the best power efficiency for the overall application a nd minimizes current drawn from main supp ly source. The use of an LDO linear regulator becomes convenient for primary supplies with rel atively low voltage (e.g. less than 5 V). In this case a sw itching regulator with a typical efficiency of 90 reduces the bene fit of voltage step-down for input curr ent savings. Linear regulators are not re commended f or hig h voltage step -down as they will dissipate a considerable amount of power in thermal energy. A sta ndard 3 -cell Lithium- Ion bat tery pack direct ly connected to VCC is the typical choice for battery -powered devices. Bat teries with Ni-MH chemistry should be avoided, since they typically reach a maximum v oltage during char ging that is above the maxi mum rating for VCC. The us e of primary (disposable) batteries is uncommon, since the typical cells available are seldom capable of delivering the burst peak current for a GSM ca ll due to high internal resistance. The following sections hig hlight some desig n aspects for each of these supplies. Switching regula tor The characteristics of the sw itching regulator connect ed to the VCC pin should mee t the following requirements. Low output rip ple: the switching regulator and ou tput circuit must be capable of provid ing a clean (low noise) VCC voltage profile. High switchin g frequency: for best performance and for smaller app lications select a sw itching frequency ? 600 kHz (since an L -C output f ilter is typically smaller for high switching f requenc y). Using a switching regulator w ith a variable switching f requency or with a sw itching frequency lower than 600 kHz must be carefully eva luated since this can prod uce no ise in the VCC voltage profile a nd therefore impact and w orsen GSM modulation spectrum performance. An additional L-C low-pass filter between the switching regulator output a nd the VCC supp ly pin can mitigate the r ipple on VCC, but adds extra volta ge drop due to resist ive losses in series inductors. PWM mode operation: se lect preferably regu lators with Pulse Width Modulati on (PWM ) mode. Switching regulators a ble to sw itch between low ripple. The use of a sw itching regulator is suggested w hen the difference from the av ailable supply rail and the VCC value is high: switching regulators provide good efficiency transformin g a 12 V supply to the 3.8 V typical v alue of the VCC supply. T he following power supp ly circuit example is impleme nted on the LEON Evaluatio n Board. Resisto r 0402 5 0.1 W 2322 - 705 - 87474 - L - Yageo R2 15 k. Resisto r 0402 5 0.1 W 2322 - 705 - 87153 - L - Yageo R3 33 k. Resisto r 0402 5 0.1 W 2322 - 705 - 87333 - L - Yageo R4 390 k. Resisto r 0402 1 0.063 W RC0402FR-07390KL - Yage o R5 100 k. Power dissipation: the po wer handling capability of the L DO linear regulator has to be check ed to limit its junction temperature to the maximum rated operating ra nge (i.e. check t he voltage drop from the max input voltage to the min output vo ltage to evaluate the pow er dissipation of the regulator) Figure 8 and the compone nts listed in Table 6 show an example of a pow er supply circuit, w here t he VCC module su pply i s prov ided by an LDO linear regulator capable to del iver 2.5 A current pulses, w ith proper powe r handling capability. The use of a linear re gulator is sugge sted w he n the differ ence from the a vailable supply rail and the V CC value is low: linear regulators provide good efficiency transforming a 5 V supply to t he 3.8 V typica l value of the VCC supply. The maximum pulse discharge current and the maximum DC discharge cur rent ar e not al ways r eported in batteries data sheet, but the maxim um DC discharge current is typically almost equal to the battery capacity in Ampere- hours divided by 1 hour. DC series resistance: the rechargeable Li-Ion battery with its output circuit has to be capab le to avoid a VCC voltage drop great er than 400 mV during tra nsmit bursts. Maximum charging voltage (overcharge detection voltage): if the c harging process is managed by the GSM module, the ove rcharge detection volta ge of the used battery pack, w hich enables batt ery protection, must be greater or e qual than 4.3 V, to be c harged by the GSM module. Maximum DC charging current: the r echargeable Li-Ion batter y has to be capable to be charged by the charging current provided by the selected exter nal charger. The maximum DC cha rging current is not a lways reported in batteries data sheet, but the maximum DC charging curr ent is typically almost equal to the battery capacity in Ampere -hours divided by 1 hour Primary (disposabl e) battery The characteristics of the primary (non-rechargea ble) battery conn ected to VCC pin should meet t he following requirements. DC series resistance: the no-rechargeable bat tery with its o utput circuit ha s to be capable to a void a V CC voltage drop greater t han 400 mV during transmit b ursts Additional hin ts for the VC C supply applica tion circuits To reduce voltage drops, use a low impedance pow er source. The r esistance of the power supply line s (connected to VCC and GND pins of the m odule) on the application b oard and battery pack should also be considered and minimized: c abling and routing must be as short as possible in order to minimize powe r losses. The cur rent consumpt ion pea k during a transmission slot is strictly dependent on the tra nsmitted pow er, w hich is regulated by the netw ork. During a GSM call, current consumption is in the order of 100 -200 mA in receiving or in monitor bursts and is about 30-5 0 mA in t he inactive unused bursts (low current period). The more relevant contribution to deter mine the average current consumption is set by the transmitted pow er in the transmit slot. Figure 10 show s an example of curre nt consumption prof ile of the data module in GS M talk mode. The transmitted power depends on network conditions and sets the peak of current consumption, but follow ing the GPRS specifications the maximum t ransmitted power can be reduced if more than one slot is used to tr ansmit, s o the maximum peak of current consumption is n ot as high as can be the ca se in a GSM call. When the p ower saving is enabled, the m odule automatically enters idle -mode w henever possible. When power saving is enabled, the module is registered or a ttached to a netw ork and a voice or dat a call is not enabled, the module automatically enters idle -mode w henever possible, but it must periodically monitor the paging channel of the current base station (pag ing block r eception), in accordance to GSM system requirements. When the module monitors the paging cha nnel, it wakes up to active mode, to enable the r eception of paging block. In between, the mod ule switches to idle -mode. T his is known as GSM discontinuous receptio n (DRX). The module processor core is activated during the paging block reception, and automatically switches its reference clock frequency fr om the 32 kHz used in idle- mode to the 26 M Hz used in active-mode. The time period between tw o paging block receptions is defined by the network. When power saving is disabled, the module doesn’t automatically enter idle -mode w henever possible: the module remain s in active mo de. The module processor core i s activated during active -mo de, and the 26 MHz re ference clock frequency is used. An e xample of t he current consu mption profile of the data module when power saving is d isabled is shown in Figure 13: the module i s registered with the network, act ive -mode is ma intained, and the receiver and the DS P are periodically activated to mon itor the paging channel for paging block reception. Two pins are available to connect the po sitive pole of the e xternal DC supply u sed as charger. A higher protection level could be required if the lines are e xternally accessible on the application board. A higher protection level can be achieved mounting an ESD protection (e.g. EP COS CA05P4S14 THSG varistor array) on the lines connect ed to these pins if they ar e externally accessible on t he application board. If the module is sw itched off, the charger circuitry generates the pow er on in charging mode after charger detection. In the pre-charging phase, the charge transistor switch mounted inside the modu le is pulsed w ith a 100 Hz clock an d an on-time of 12.5 of a period. This means the average cha rge current is reduced t o avoid overheating of. Pre -charging phase is hardw are controlled and continues as long as the VCC voltage r eaches the 3.1 V typical limit, so the module is able t o start the following fast char ging phase. During fast charging phase (following the pre-charging phase) the charge transistor switch mounted inside the module is pulsed with a 10 0 Hz and an on -time of 99 of a per iod: the a verage charge current is almost equal (i.e. 99) to the current provided by the exte rnal charger, so it is almost equal to the exte rnal charger curr ent limit. T he remaining off time (i.e. 1 of a period) is used to che ck if the external char ger is sti ll c onnected since detection is critical when ch arging swi tch is closed. The integrated charging circuit doesn’t have any volta ge or current limi tation, therefore the charger must be chosen very ca refully: during the fast charging phase, the battery is cha rged w ith the maximum DC c urrent provided by the external DC supply used as charger, w hich must be current limited as described in the cha rger specification section. When the battery voltage reaches the nomina l maximum voltage (4.2 V typical w ith 2 tolerance due to c hange in temperature and life time), charging enters the constant voltage phase (top char ge algorithm): in this phase the average charging current dec reases until the batte ry is completely charged. After the constant voltage phase, the batter y is maintained at a higher level of charge w ith the tri ckle cha rge algorithm until an ext ernal charger is connecte d to the module. The VCC over-voltage threshold level is set t o the nominal value of 4.47 V (evaluated with 2 of tolerance due to change in temperature and life time ). The V-I output chara cteristics of the external sup ply used as charger must be within the va lid area delineated by:.Maximum current The cur rent limit of t he ext ernal charger must be ? 1.0 A (that is the module absolute maximum r ating as charging current) and must be low er than the maximum DC charg ing current specified by the used battery. Minimum current A minimum acceptable value for the charging current is not specified, but the chargin g current value sh ould be large enough to perform th e whole battery charging pr ocess within the time interv al defined by the appl ication and the char ging current value shou ld be gre ater than the highest possible ave rage current consumption of the system that is supplied by the battery (i.e. the module plus an y additional device on the appli cation board) to let the increase of t he battery level w hile the system r eaches its highest current consu mption. For examp le, if the battery su pplies only the module and the charging cur rent value is equal to 400 mA, the batte ry level can be increased also when the module reaches its highest cu rrent cons umption (dur ing a GPRS connection). For example, Figure 15 shows the va lid area for the charger V-I output characteristics using a battery with a maximum DC charging current equal to 600 mA: the maximu m acceptable c harging current is defined by the battery requirement (600 m A). The output of this linear regulator is enabled w hen the main voltage supply provi ding the module through VCC is w ithin the valid opera ting range, or if the module is sw itched -off. A higher protection level could be required if the line is externally accessible on the application board. A higher protection l evel can be achieved by mounting an ESD protection (e.g. EPCOS CA05P4S14 THSG varistor array) on the line connected to this pin if it is externally accessible on the application board. The RTC block is able to provi de programmable a larm functions by mea ns of the internal 32.768 kHz c lock. The RTC block has very low, but highly temperature dependent power consumption. This enables t he time refe rence (date and time) to run even when the main supply is not provided to the module. These capacitors will allow the time refer ence to run during a disconnec tion of the VCC supply. Rising edge on the VCC p in to a valid voltage as modu le supply. Do not keep floatin g in noisy environment: externa l pull- up required. A higher protection l evel can be achieved mount ing an ESD protection (e.g. EPCOS CA0 5P4S14THS G varistor array) on the line connected to this pin if it is externally accessible on the application board. Avoid keep it floating in noisy environment. Using a push-pull output of the exte rnal device, take care to fix the proper level in al l the possible scenarios to avo id an inappropriate sw itch-on of the module. The RTC syste m will then initiate the boot seq uence by i ndicating to the power management unit to turn on power. To avoid an increase of the modul e current consumption in power down mode, a ny external signal of the digital int erfaces connected to the modu le must be set low or tri - stated when t he module is in not-powe red mode or in the pow er-off mode. After t he detection of a start-up event, all the digital pins of the module are held in tri-sta te until all the internal LDO voltage regulators are turned on in a defined power-on sequence. The module is fully ready to operate when all the interfaces are configured. Since the time t o per form a network detach depe nds on the netw ork settings, the duration of th i s phase can differ from the typi cal value reported in F igure 20. If t he external signals connec ted to the module digital pins ca nnot be set low or tri -stated, insert a switch (e.g. T exas Instruments SN74CB3Q16244, or Texas Instrume nts TS5A3159, or Texas Instruments TS5A63157) between the two - circuit connections. Set the switch to h igh impedance when the module is in pow er -down mode (to avoid an increase of the module p ower consumpt ion). Figure 20 describes t he power-off sequence. Forci ng an “external” or “hardw are” reset, th e current parameter settings are not saved in the module’ s non -volati le memory and a proper net work detach is not perf ormed.