G620 GPRS Module Hardware User Manual
Contents
1. S G s 13 3 4 Power On Off Operation nn esssssscsssssccssssccsssscessseccssneecssnseccssseccsssecessuecesnseeessseeessuecessuseessuseeesssecessueeessusecesnseessaseeeesnsesees 15 3 4 4 Turning on the MOCUIe 2 eseeessssescsseecsseecssecssseesssecssccsssccssecesseccsuecssseccssecsusecsssecsuseesuecesueecsueecsueessseessnecssseessseess 15 3 4 2 Turning off the MOdUule ssecsssssscsssssccssesccsssecsssuseecsnsecessseccssseccssueecesusecessseceesuecessusecesssceessseeessueessnseeesaseeseaneeees 16 3 5 senuI H9 17 3 5 1 Activating Sleep M dena ters ete E EE E vea bebe bus bueb eee R 17 3 5 2 Serial Interface during Sleep MOE escsssssscsssescssssccssusscesnseccsssscessueccesusccssssecessnecessuscessusceesuseeesaneecssneessneeesses 18 3 5 3 Terminating Sleep Mode tette ect ere eet seei ieot a Eiei TE SEE eee pug tens ve eee eset haa go 18 3 6 Real Time dies qeu 20 3 6 1 VBACKUP descriptiones ieai e tees esti tbess EE ER ER 20 BiO 2 RIC AP PliCatlon Pom 20 37 MAIR pec 20 EE A MEE SBssicc c 21 cpi tm 22 EREMO I RE Sm 22 3 8 1 SIM COMMECU OM s ciem eie coerente eeepc eer ERR s 23 3 82 SIM Design Guidelines sssini estet ete tereti beb2. sssssccsssssccssesccssseccssseccsssecessusecesssecessseecssuecessueessusceesssecessuseessuscessuseessasecsssneeessueecesnseessaees 30 5 2 Recommended PCB Layout 0 esssesscssccseeccssecsnsecssesesseeesuecesseecsuecesseccssecsaseesssecsusecsuseesuecessecesueeesseecsnecsuseesaseesueesneeeseseess 31 5 3 ub e 31 5 4 Reflow Temperature Profile eesssssssssssssscssssscssnssessuescessseeesssecessusecssuecssnsccesssecessucessnscessuscessnscessasecessuecessneeessnseeessees 33 APPEMGIXEGIOSS ANY e 34 G620 GPRS Module Hardware User Manual Page 4 of 34 Bs FIBOCOM 1 Introduction 1 1 Scope This manual provides the electrical mechanical and environmental requirements for properly integrating the G620 GPRS module in a host application This manual gives a complete set of hardware features and functions that may be provided by G620 The availability of any feature or function which is described in this manual depends on the hardware revision and software version of a specific G620 GPRS module 1 2 Audience This manual is intended for all members of the integration team who are responsible for integrating the G620 module into the host OEM device including representatives from hardware software and RF engineering disciplines 1 3 Applicable Documents e G620 GPRS Module brief e G620 GPRS Module Descrip
3. G620 Q50 00 Quad Band850 900 1800 1900 MHz e G6204A50 01 Dual Band 900 1800 MHz The G620 is similar to a condensed cellular phone core which can be integrated into any system or product that needs to transfer voice or data information over a cellular network Thus it significantly enhances the system s capabilities transforming it from a standalone isolated product to a powerful high performance system with global communications capabilities The G620 is designed as a complete GSM GPRS communications solution with all the controls interfaces and features to support a broad range of applications e Lowcost e Wider voltage operate range Avariety set of indicators and control signals e Lower power consumption Avariety of serial communications solutions All these features and interfaces are easily controlled and configured using a versatile AT command interface that provides full control over the G620 operation The G620 control and indication interface extends its capabilities beyond GSM communications This includes a regulated output voltage for supplying external circuits With these interfaces the G620 can operate and control external applications and receive feedback from external environment and circuits The G620 interface design using a single 26 pin SMT through which all application interfaces are managed facilitates fast and easy integration It significantly shortens the development process and minimizes the p
4. GSM 07 10 multiplexing protocol G620 GPRS Module Hardware User Manual Page 8 of 34 Bs FIBOCOM CSD Max BR 9 6 kbps SMS MO MT Text and PDU modes Cell broadcast FAX Group3 Class 2 TS 61 62 Reliability Features Item Test Condition Standard Low temperature Storage Temperature 40 2 C Test Duration 24 h IEC60068 High temperature Storage Temperature 85 2 C Test Duration 24 h IEC60068 Low temperature Working Temperature 40 2 C Test Duration 24 h IEC60068 High temperature Working Temperature 85 2 C Test Duration 24 h IEC60068 Damp Heat Cycling High Temperature 55 2 C Low Temperature 25 2 C Humidity 95 Repetition Times 4 Test Duration 12h 12h IEC60068 Temperature Shock Low Temperature 40 2 C High Temperature 85 2 C Temperature Change Interval lt 30s Test Duration 15 min Repetition Times 100 IEC60068 Sine Vibration Frequency Range 5 Hz to 200 Hz Acceleration 10 m s2 Frequency Scan Rate 1 oct min Test Period 3 axial directions Five circles for each axial direction IEC60068 Shock Test Half sine Wave Shock Peak Acceleration 300 m s2 Shock Duration 11 ms Test Period 6 axial directions One shock for each axial direction IEC60068 Clash Test Half sine Wave Peak Acceleration 180 m s2 IEC60068 G620 GPRS Module Hardware U
5. e Operating temperature 25 C e Registered to a GSM GPRS network The actual current ratings may vary from the listed values due to changes in the module s operating and environment conditions This includes temperature power supply level and application interface settings edm LL Idle mode GSM only DRX 2 85dBm GSM850 900 DSC PCS Low power mode gsm avg Average current GSM850 900 PCL 5 GSM voice 10 150 1 TX slot 1 Rx slot 15 115 19 110 DCS PCS PCL 0 230 5 140 10 115 15 110 Average current GSM850 900 PCL 5 1800 2000 mA GSM voice 1 TX slot 1 Rx slot 19 300 DCS PCS PCL 0 1400 15 300 gprs avg Average current GPRS GSM850 900 PCL 5 420 mA Class 10 19 150 2 TX slot 2 Rx slot DCS PCS PCL 0 380 15 150 G620 GPRS Module Hardware User Manual Page 14 of 34 Bs FIBOCOM 3 4 Power On Off Operation The module power on and off is the two primary phases which are related at the interface connector by the hardware signals POWER_ON VDD G620 A50 00 and G620 Q50 00 can start up automatically after power is on G620 A50 01cannot start up automatically after powered up it boots up by Power_ON signal The POWER_ON signal is main controller The VDD signal indicates whether G620 is powered on or off When this signal is disabled OV G620 is powered off When it is output 2 85V G620 is powered on Note e When the VBAT power supplied the G620 module will be turn on automatically e The
6. 17 BATT 5 LPG 18 BATT 6 GND 19 CTS N 7 SIM CLK 20 RTS N 8 SIM DATA 21 TXD N 9 SIM VCC 22 RXD_N 10 SIM_RST 23 DSR_N 11 VDD 24 RING_N 12 GND 25 DTR_N 13 GND 26 DCD_N G620 GPRS Module Hardware User Manual Page 29 of 34 Bs FIBOCOM 5 Mechanical Design 5 1 Mechanical Specifications The following figure shows the mechanical specifications of the module in details SIDE VIEW 18 91 5 12 13 pin 1 pin Figure 5 1 G620 GPRS Module Hardware User Manual Page 30 of 34 Bs FIBOCOM 5 2 Recommended PCB Layout RECOMMENDED PCB LAYOUT Figure 5 2 5 3 Antenna Design The RF I O Antenna signal is by default provided to 50 ohm antenna interface In user s main board the Antenna layout should be design 50 ohm Microstrip Transmission Line The Microstrip Transmission Line is better handled by PCB vendor We also provide a sample 50 ohm unbalanced transmission system Here are some PCB parameters which will affect impedance e Track width W e PCB substrate thickness H e PCB substrate permittivity er e Toalesser extent PCB copper thickness T and proximity of same layer ground plane W E E i G620 GPRS Module Hardware User Manual Page 31 of 34 T Figure 5 3 Bs FIBOCOM Typical Track Widths for an FR4 material PCB Substrate in Microstrip Topology Substrate Material Permittivity Substrate Thickness Track Width Er H mm W MM 1 6 2 91 1 2 2 12 1 0 1 81 FR4 4
7. 6 0 8 1 44 0 6 1 07 0 4 0 71 0 2 0 34 Antenna characteristics are essential for good functionality of the module The radiating performance of antennas has direct impact on the reliability of connection over the Air Interface Bad termination of the antenna can result in poor performance of the module The antenna should fulfill the following requirements Antenna Requirements Impedance 500 Frequency Range Depends on the Mobile Network used GSM900 880 960 MHz GSM1800 1710 1880 MHz GSM850 824 894 MHz GSM1900 1850 1990 MHz Input Power gt 2 W peak V S W R lt 2 1 recommended lt 3 1 acceptable Return Loss 11 10 dB recommended S11 6 dB acceptable Gain 3 dBic Typically GSM antennas are available as Linear monopole typical for fixed application 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 The integration normally requires the fulfillment of some minimum guidelines suggested by antenna manufacturer Patch like antenna better suited for integration in compact designs e g mobile phone They are mostly custom designs where the exact definition of the PCB and product mechanical design is fundamental for tuning of antenna characteristics G620 GPRS Module Hardware User Manual Page 32 of 34 Bs FIBOCOM Fo
8. VDD would be flowed backwards by other lOs which be connected extend voltage So DSR CTS LPG can be indicated the powered on process replaced e TheTXD should be pulled up continuously between the G620 turn on process Pin Signal Name Description 3 POWER ON Power on and off module Low level activated 11 VDD Illustrating module start up LDO power output OV G620 is power off LDO power output 2 85V G620 is start up 3 4 1 Turning on the module When the module is powered off the PMU operates at low power mode with only the RTC timer active The module will power on again when the POWER ON signal is falling edge Asserting the POWER ON signal low for a minimum of 800 milliseconds will turn module on The following figure illustrates power on succeeded do ae l AX 810 00000000ms EEE EEE T T EEE AY 5 46875V Figure 3 2 G620 GPRS Module Hardware User Manual Page 15 of 34 Bs FIBOCOM The following figure illustrates the power on is failed VDD POWER ON Delay 800 0000ms CH1 1 00V div CH2 1 00V div 200 0ms div 500Sa s Figure 3 3 3 4 2 Turning off the Module There are three ways to turn off the module Asserting the POWER ON signal low for a minimum of 3 seconds under voltage automatic shutdown or using AT Command please refer to G620 GPRS Module AT Command User Manual 1 POWER ON Signal The POWER ON signal is set high using an internal pull up resist
9. 20 is powered off without the work net logging out Note It s recommended that it should connect he 1nF capacitor to GND on external circuit LN e G620 GPRS Module Hardware User Manual Page 24 of 34 Bs FIBOCOM 3 9 3 LPG As an alternative to generating the synchronization signal the control pin can be used to drive a status LED on application platform The timing of LPG it can be indicated the module status straight Referenced circuits Figure 3 10 States of the LED vs PIN LED Off HIGH LED On LOW LED state Operating status of the module Permanently off The module is in one of the following modes e Power off mode SLEEP mode 600 ms on 600 ms off The module is in one of the following status NO SIM card SIM PIN Register network T lt 15S e Register network failure always 3son 75 ms off The module is in one of the following status IDLE mode 75 ms on 75 ms off The module is in one of the following status One or more GPRS contexts activated Permanently on The module is in one of the following status e Voice call e CSD or FAX call G620 GPRS Module Hardware User Manual Page 25 of 34 Bs FIBOCOM When the module is POWER ON the LPG timing see as below CH1 1 00V div 2 000s div 50 0S a s POWER ON Register network IDLE mode Figure 3 11 G620 GPRS Module Hardware User Manual Page 26 of 34 Bs FIBOCOM 4 Electrical a
10. A Control amp Status 5 LPG Work mode indicator O CP Wave VOL max 0 35V VOH wiy VDD 0 35V 11 VDD LDO power output O 0 3V 2 85V 3 Illustrating start up Output current 10mA 2 RESET_N Extend reset PU HZ H VIL max 0 2V Low level activated VIH win 0 7 VDD 3 POWER_ON Turn on module PU HZ H ViLyax 0 2V Low level activated VIH yy 0 7 VDD 220K PU to VBACKUP UART Modem DCE 22 RXD_N Received Data O CP H VOL max 0 35V 21 TXD_N Transmitted D l CP H A OAA 2 ransmitted Data VIL max 0 2V 24 RING_N Ring indicator O CP H VIH mn 0 7 VDD 23 DSR_N Data Set Ready O CP H 20 RTS_N Request To Send CP H 25 DTR N Data Terminal Ready CP H 19 CTS N Clear To Send O CP L 26 DCD_N Data Carrier Detect O CP H SIM Interface 3 0V 9 SIM_VCC SIM power O 0 3V 1 8V 2 85V 3 Output current 10mA 7 SIM CLK SIM clock 9 T 3 58MHz VOL max 0 35V VOH yy VSIM 0 35V 8 SIM DATA SIM data 1 0 OD PD Wave VIL yyae 0 2 VSIM 10 SIM_RST SIM reset O T L VIH wn 0 7 VSIM 14 RF_ANT RF antenna port 4 NC G620 GPRS Module Hardware User Manual Page 28 of 34 Bs FIBOCOM Note CP Center Pin T 3 Status PD Pull Down PU Pull Up OD Open Drain 4 4 Pin Definitions Pin 26 Pin 14 Ba FIBOCOM G620 S N B4C2BL0110 IMEI 355073030490567 C 0700 Pin 1 Pin13 Figure 4 1 Pin No Signal Name Pin No Signal Name 1 VBACKUP 14 RF ANT 2 RESET N 15 GND 3 POWER ON 16 GND 4 NC
11. B FISOCOM erfect Wirele Bs FIBOCOM Confidential Material This document contains information highly confidential to Fibocom Wireless Inc Fibocom Fibocom offers this information as a service to its customers to support application and engineering efforts that use the products designed by Fibocom The information provided is based upon requirements specifically provided to Fibocom by the customers All specifications supplied herein are subject to change Disclosure of this information to other parties is prohibited without the written consent of Fibocom Copyright Copy Reproduce Distribute and or Edit of this document or part of it as well as utilization of its contents and communication thereof to others without express authorization are prohibited Offenders will be held liable for payment of damages All rights created by patent grant or registration of a utility model or design patent are reserved Copyright 2013 Fibocom Wireless Inc All rights reserved Trademarks Notice B FIBOCOM The FIBOCOM Logo is registered by Fibocom Wireless Inc All other product or service names or logos are the property of their respective owners Copyright 2013 Fibocom Wireless Inc All rights reserved Revision History Version Date Remarks V1 0 3 2012 09 14 Modify some description error V1 0 4 2012 12 04 Modify G620 PCB RECOMMENDED LAYOUT and update Architecture V1 0 5 2013 01 07 Add reliability features in specifica
12. BOCOM 3 8 1 SIM Connection The figure illustrates a typical SIM interface connection to the module This connection type is implemented on the module Developer Board using an MOLEX SIM tray PN 912283001 amp 912360001 SIM_DATA 3 r SIM_GLK 3 SIM RST 3 lt S M SPIN Figure 3 9 3 8 2 SIM Design Guidelines The SIM interface and signals design is extremely important for proper operation of the module and the SIM card There are several design guidelines that must be followed to achieve a robust and stable design that meets the required standards and regulations e TheSIM should be located and its signals should be routed away from any possible EMI sources such as the RF antenna and digital switching signals e The SIM interface signals length should not exceed 100 mm between the G620 interface connector and the SIM tray This is to meet with EMC regulations and improve signal integrity e Toavoid crosstalk between the SIM clock and data signals SIM_CLK and SIM DATA it is recommended to rout them separately on the application board and preferably isolated by a surrounding ground plane e The SIM card signals should be protected from ESD using very low capacitance protective elements zener diodes etc The recommended part no of ESD is AVR M1005CO80MTAAB TDK We also recommended the ESD component should layout with SIM hold closely G620 GPRS Module Hardware User Manual Page 23 of 34 Bs FIBOCOM 3 9 Co
13. able summarizes the general characteristics of the module operating modes and provides general guidelines for operation Operating Modes Description Features The G620 is off Not Powered BATT amp Vbackup supply is disconnected Any signals connected to the interface connector must be set low or tri state The G620 MCU DSP RF is Off The PMU is operating in RTC mode Any signals connected to the interface Valid BATT supply but not power on Power off Mode After reset module Vbackup output and VDD is off connector must be set low or tri state The G620 MCU DSP RF is Off Power off mode a M The PMU is operating in RTC mode RTC Mode BATT supply is disconnected But valid Any signals connected to the interface Vbackup supply connector must be set low or tri state The G620 is fully active registered to the GSM GPRS network and ready to communicate Note This is the default power on mode Power on is succeeded and VDD output Idle Mode CTS N and DSR N signals are enabled low The G620 is in low power mode The application interfaces are disabled but G620 continues to monitor the GSM network Sleep Mode CTS N signal is wave A GSM voice or data call is in progress When Call or CSD call LPG signal is toggling the call terminates G620 returns to the last or GPRS data operating state Idle or Sleep 3 3 Power Supply The G620 power supply must be a
14. alls or data After this short paging is completed G620 returns to sleep mode During this short awake period the serial interfaces are enabled and communications with the module is possible The CTS_N signal is alternately enabled and disabled synchronously with the network paging cycle CTS_N is enabled whenever G620 awakes to page the network The period based on the DRX parameter of the network 4 615 ms TDMA frame duration 51 number of frames DRX value At the same time the CTS_N indicates the G620 serial interfaces are active or inactive Agilent CTS DRX 2 elay 800 000m CH1 1 00V div CH2 1 00V dis 200 0ms div 500S a s Figure 3 6 3 5 3 Terminating Sleep Mode Terminating the Sleep mode or wake up is defined as the transition of the G620 operating state from Sleep mode to Idle mode There are several ways to wake up G620 from Sleep mode as described below During Sleep mode the G620 internal clocks and circuits are disabled in order to minimize power consumption When terminating the Sleep mode and switching to Idle mode G620 requires a minimal delay time to reactivate and stabilize its internal circuits before it can respond to application data This delay is typically of 5 ms and is also indicated by the CTS N signal inactive high state The delay guarantees that data on the serial interface is not lost or misinterpreted 3 5 3 1 Temporary Termination of Low Power Mode Temporary termination of S
15. another 4s Every 5 seconds as a cycle 3 When a Short massage comes in the RING N line to low for 150 mS and always high 3 7 2 DCD Indicate The DCD_N signal serves to indicate CSD call or GPRS data mode The detail definition refers to AT amp C command 3 8 SIM Interface The module incorporates a SIM interface which conforms to the GSM 11 11 and GSM 11 12 standards which are based on the ISO IEC 7816 standard These standards define the electrical signaling and protocol specifications of a GSM SIM card The module does not incorporate an on board SIM card tray for SIM placement The SIM must be located on the user application board external to the G620 The G620 SIM interface includes all the necessary signals which are routed to the interface connector for a direct and complete connection to an external SIM The module supports 1 8V or 3 0V SIM card automatic While the G620 turn on by POWER ON At first SIM VCC output 1 8V voltage for external SIM card communication If it is not successful SIM VCC output 2 85V voltage and communicated SIM card again Note If SIM VCC is supplied remove SIM card is prohibited In case it would damage both SIM card and G620 Pin Signal Name Description 7 SIM CLK Serial 3 25 MHz clock 9 SIM VCC 2 85V Supply to the SIM 8 SIM DATA Serial input and output data 10 SIM RST Active low SIM reset signal G620 GPRS Module Hardware User Manual Page 22 of 34 Bs FI
16. ated the RTC timer will keep the time and date synchronized regardless of the module operating state 3 7 UART The module includes one completely independent serial communications interface UART The module UART is a standard 8 signal bus This UART is used for all the communications with G620 AT commands interface GPRS EGPRS data and CSD data programming and software upgrades The UART signals are active low CMOS level signals For standard RS232 communications with a PC an external transceiver is required G620 GPRS Module Hardware User Manual Page 20 of 34 Bs FIBOCOM The module is defined as a DCE device and the user application is defined as the DTE device These definitions apply for the UART signals naming conventions and the direction of data flow as described in the figure Pin Signal Name Description Feature Direction 19 CTS_N Module Clear To Send DCE Switch To Received Mode DCE DTE 20 RTS_N Request To Send DTE Notice DCE Requested To Send DTE DCE 21 TXD N Module Received Data DTE Transmitted Data DTE DCE 22 RXD N Module Transmitted Data DTE Received Data DCE DTE 23 DSR_N Module Data Set Ready DCE Was Ready DCE DTE 24 RING_N Module Ring indicator Notice DTE Remote Call DCE DTE 25 DTR_N Data Terminal Ready DTE Was Ready DTE DCE 26 DCD N Data Carrier Detect Data Carrier Was Online DCE DTE Recommended connection Application MCU Directio
17. dle Sleep as long as power is supplied above the minimum operating level If the main power is not available the backup battery or capacitor can be supplied to RTC by interface connector VBACKUP When the main power supply and VBACKUP is disconnected from module the RTC timer will reset and the current time and date will be lost When the module power on again please reconfigure the time and date 3 6 1 VBACKUP description Pin Signal Name Description 1 VBACKUP Real time clock power e When main power BATT is supplied The VBACKUP output 2 0V 0 3mA current for external battery or capacitor charging e When main power BATT is disconnected The VBACKUP supply the RTC by External battery or capacitor The RTC power consumption is about 12uA The voltage cannot be over 2 2V e The VBACKUP is supplied by a capacitor The backup time can be calculated by capacitance approximately T s C uF 1 3 3 6 2 RTC Application Here are the methods to set the time and date of the module e Automatically retrieved from the GSM network In case module is operated in a GSM network that supports automatic time zone updating it will update the RTC with the local time and date upon connection to the network The RTC will continue to keep the time from that point e Using the AT CCLK command Setting the time and date manually by this AT commands overrides the automatic network update Once the time and date are manually upd
18. e connector In any case the module supply input must not drop below the minimum operating level during a transmit burst Dropping below the minimum operating level may result in a low voltage detection which will initiate an automatic power off To minimize the losses and transients on the power supply lines please follow these guidelines e Usea 1000 uF or greater low ESR capacitor on the G620 supply inputs The capacitor should be located as near to the G620 interface connector as possible e Use low impedance power source cabling and board routing e Use cabling and routing as short as possible Filter the module supply lines using filtering capacitors as described in the table Recommended Capacitor Usage Description 1000 uF GSM Transmit current serge Minimizes power supply losses during transmit bursts Use maximum possible value 10 nF 100 nF Digital switching noise Filters digital logic noises from clocks and data Sources 82 pF 10 pF 1800 1900 MHz GSM bands Filters transmission EMI 33 pF 39 pF 850 900 MHz GSM bands Filters transmission EMI 3 3 2 Power Consumption The table specifies typical module current consumption ratings in various operating modes The current ratings G620 GPRS Module Hardware User Manual Page 13 of 34 Bs FIBOCOM refer to the overall module current consumption over the BATT supply Measurements were taken under the following conditions e BATT 4 0V
19. ed Only when the serial interface transfer is completed and the data is processed the module will return to Sleep mode automatically according to the ATS24 settings Agilent ATS24 1 Delay 800 0000m CH1 1 00V div CH2 1 00V div 200 0ms div 500S a s Figure 3 7 a The module serial interfaces be set HARDWARE FLOW AT IFC 2 2 If the module serial interfaces be set HARDWARE FLOW by AT IFC command and the DTE serial interfaces was running with HARDWARE FLOW the TXD data will be sent to the module by CTS_N enabled the data will not be lost And module will go back to Idle mode for response b The module serial interfaces be set NONE FLOW AT IFC 0 0 The default value If the module serial interfaces be set NONE FLOW by AT IFC command and the DTE serial interfaces was running with NONE FLOW the TXD data will be sent to module anytime the data will be lost But then module will go back to idle mode if data and CTS_N enabled at the same time G620 GPRS Module Hardware User Manual Page 19 of 34 Bs FIBOCOM 3 5 3 2 Permanent Termination of Sleep Mode The G620 Sleep mode is enabled and disabled by the ATS24 command ATS24 ATS24 0 disables Sleep mode The value of ATS24 gt 0 will be saved but the mode will not be save by re power G620 3 6 Real Time Clock The main function of Real Time Clock RTC is keeping time The RTC subsystem is embedded in the PMU and operates in the entire module operating modes Off I
20. er RU eee eee EERE 23 3 9 Controls and Indicators Interface sssccssssscssssecsssescessscessseccsssecessueccssuceesssecesssecessueeessusecssnsscessseeessueeeesueeeesueeeesneeees 24 G620 GPRS Module Hardware User Manual Page 3 of 34 Bs FIBOCOM 3 9 1 VDD Reference Regulator esssssssscssssscssssscsssescssssscecsssecssusesssusesessseecssuecessusessnsecesssecesssecessuecessuseessnseeesaneeessseeeeey 24 392 External RESO 24 EIE E E R B 25 4 Electrical and Environmental Features ssesssssscssescsssscssescsseccseccssecsssessssecssseessssesueeesueecsuecesseccsneeesseecsseesuseesseesueesneeesneess 27 4 1 Absolute Maximum Ratings ssecssssssssscsssecsssecsssecsssecssecesseecsseccsseecssscssseecsseesssecsnseesuseesuseesuecesseccsueeesseecsueesaseessseesuseesies 27 4 2 Environmental Specifications 02 sssscccssssscsssssesssescsssesessnsecessecesssseccsuecessnseessuseeesssecessueeessnscessuseessaseessaneecesueecesnseeesnees 27 4 3 Application Interface Specifications ssssscssssscssssecsssescsssseccsssscessusecssneessusecesssecessueeessneesssseessssecessueeeesneeessnseessaees 28 44 PU ID STATENS ss ritenere erret tette ree aeree AEE ERRERA 29 5 Mechanical DeSigh a ssessssssccsesccsssccseeccsscccsecsssscessecsssscensecsnsscenssssnesecnssesnesssnsesssscsssscssseesssscsssecensscenssseneseenseesnecsenscseneeesssesaseesseses 30 5 1 Mechanical Specifications
21. leep mode occurs when the module switches from Sleep mode to Idle mode for a defined period and then returns automatically to Sleep mode Low power mode may be terminated temporarily by several sources some of which are user initiated and others are initiated by the system Incoming Network Data During Sleep mode module continues monitoring the GSM network for any incoming data message or voice calls When module receives an indication from the network that an incoming voice call message or data is available it automatically wakes up from Sleep mode to alert the application When module wakes up to Idle G620 GPRS Module Hardware User Manual Page 18 of 34 Bs FIBOCOM mode all its interfaces are enabled Depending on the type of network indication and the application settings module may operate in several methods which are configurable by AT commands to alert the application of the incoming data a Enable the serial interface s CTS_N b Send data to the application over the serial interface c Enable the serial interface s Ring Indicator RING_N signal d LPG status indicator Data on the Serial interface During Sleep mode serial communications is limited to short periods while module is paging the network When the serial interface is active data can be exchanged between the application and the module The module will not return to Sleep mode until the serial interface transmission is completed and all the data is process
22. ll of the G620 interface signals are inactive and are kept in their previous state prior to activating low power mode To save power all the G620 internal clocks and circuits are shut down and therefore serial communications is limited The CTS_N signal is alternately enabled LOW level and disabled HIGH level synchronously with Sleep Mode and Idle mode At the same time this indicates the G620 serial interfaces are active G620 will not enter Sleep mode in any case when there is data present on the serial interface or incoming from the GSM network or an internal system task is running Only when processing of any external or internal system task has completed G620 will enter Sleep mode according to the ATS24 command settings All of the description about CTS_N it must be set the UART to HW control by AT command 3 5 1 Activating Sleep Mode By default the module powers on in Idle Mode The ATS24 default is 0 In this mode the module interfaces and features are functional and the module is fully active Sleep mode is activated by the ATS24 command Such as ATS24 would be activated Sleep mode at soon HIGH disable Sleep Mode LOW enable Idle Mode CH1 1 00V div CH2 1 00v d 100 0ms div 1 00KSa s ATS24 1 return OK Figure 3 5 G620 GPRS Module Hardware User Manual Page 17 of 34 Bs FIBOCOM 3 5 2 Serial Interface during Sleep Mode The module wakes up periodically from Sleep mode to page the GSM network for any incoming c
23. lyzer connect the antenna through a coaxial cable to the measurement device the S11 indicates which portion of the power is delivered to antenna and which portion is reflected by the antenna back to the modem output A good antenna should have a S11 below 10 dB over the entire frequency band Due to miniaturization mechanical constraints and other design issues this value will not be achieved A value of S11 of about 6 dB in the worst case is acceptable 5 4 Reflow Temperature Profile EEZ O E E ES S one RUM p 3 4 6 6 7 Top 105 125 150 187 225 250 250 Bottom 105 125 150 187 225 250 250 Conveyor Speed inch min 20 0 N 3 N ET 2 5 v Li Z 1 72 Z3 74 75 Z8 z7 50 100 150 200 300 Figure 5 4 G620 GPRS Module Hardware User Manual Page 33 of 34 Bs FIBOCOM Appendix Glossary Name Description ADC Analog Digital Converter ETS European Telecommunication Standard ESD Electronic Static Discharge EMC Electromagnetic Compatibility EMI Electro Magnetic Interference FEM Front end module GPRS General Packet Radio Service GSM Global Standard for Mobile Communications LNA Low Noise Amplifier PCB Printed Circuit Board PCL Power Control Level PMU Power manager unit RTC Real Time Clock SIM Subscriber Identification Module SMS Short Message Service SMD Surface Mounted Devices UART Universal Asynchronous Receiver Transmitter asynch
24. n Module RXD Pin 22 RXD_N TXD gt Pin 21 TXD_N RI Pin 24 RING N DSR _ Pin 23 DSR_N RTS Pin 20 RTS_N DTR Pin 25 DTR_N CTS A Pin 19 CTS N DCD Pin 26 DCD N The UART supports baud rates 1200 2400 4800 9600 19200 38400 57600 115200 230400 bps Auto baud rate detection is supported for baud rates up to 230400 bps All flow control handshakes are supported hardware or none The UART default port configuration is 8 data bits 1 stop bit and no parity with none flow control and auto baud rate detect enabled Note The auto baud will be availability at the first time after power on The UART will be no answer probably if switch to another baud rate at working 3 7 1 Ring Indicate The RING N signal serves to indicate incoming calls and other types of URCs Unsolicited Result Code It can also be used to send pulses to the host application for example to wake up the application from power saving state In IDLE mode the RING Nis high It is only indicating a type of event at a time 1 When a voice call comes in the RING N line goes low for 1 second and high for another 4 seconds Every 5 seconds as a cycle G620 GPRS Module Hardware User Manual Page 21 of 34 Bs FIBOCOM Agilent 1 K1 X2 0 20H2 K1 X2 4 975 aren arenes SS ee Delay 000000 CH1 1 00V div 2 000s div 50 0Sa s Figure 3 8 2 When a FAX call comes in the RING N line low for 1s and high for
25. nd Environmental Features 4 1 Absolute Maximum Ratings The table gives the maximum electrical characteristics of the module interface signals Note Using the G620 module beyond these conditions may cause permanent damage to the module pue pe m m tae Digital Input Signals G620 powered on VDD Domain 4 2 Environmental Specifications The table gives the environmental operating conditions of the G620 module Note Using the G620 module beyond these conditions may cause permanent damage to the module mum o o o p m m oe Ambient Operating Temperature At antenna port Contact Air At plane G620 GPRS Module Hardware User Manual Page 27 of 34 Bs FIBOCOM 4 3 Application Interface Specifications The table summarizes the DC electrical specifications of the application interface connector signals Note Interface signals that are not used by the customer application must be left unconnected G620 incorporates the necessary internal circuitry to keep unconnected signal in their default state Do not connect any components to or apply any voltage on signals that are not used by the application 6620 CEO Sp Description I O Reset Level Idle Level Level Character Pins Name Power 17 BATT DC power supply 3 3V 4 5V 18 6 GND Ground 12 13 15 16 1 VBACKUP Real time clock power 1 0 2 0V 2 0V 1 86V 2 14V Output current lt 3mA Input current 12u
26. ntrols and Indicators Interface The module incorporates several interface signals for controlling and monitoring the module s operation The following paragraph describes these signals and their operation Pin Signal Name Description 11 VDD LDO power output Illustrating module start up LPG Module work status indicator RESET_N Extend reset module Low level activated 3 9 1 VDD Reference Regulator The module incorporates a regulated voltage output VDD The regulator provides a 2 85V output for use by the customer application This regulator can source up to 30 mA of current to power any external digital circuits When the module started up by power on signal The VDD is output So it can be Illustrating module start up Note The VDD regulator is powered from the G620 s main power supply and therefore any current sourced through this regulator originates from the G620 BATT supply The overall BATT current consumed by G620 is directly affected by the VDD operation The G620 current consumption raises with respect to the current sourced through VDD 9 p Imax Current pulled down from LDO 150 mA to GND until LDO voltage is 5096 of nominal value PSRR 50 Hz 20 kHz 3 9 2 External Reset The RESET N input signal would be power off the G620 immediately This signal is set high after power up when G620 is operating It is set low when G620 is powered off When the RESET N signal is low the G6
27. or when power is applied to module When the POWER ON signalis falling edge and keeping low for a minimum of 3 seconds will turn module off This will initiate a normal power off process which includes disabling of all applications interfaces UART SIM card etc and logout the network connection Agilent VO X20 33Hz KIKA 43 00 VDD T foe Serene aurea OMS I POWER ON CHI 200V dy Turn off failed Figure 3 4 2 Under voltage Automatic Shutdown A low power shut down occurs when G620 senses the external power supply is below the minimal operating G620 GPRS Module Hardware User Manual Page 16 of 34 Bs FIBOCOM limit VBAT lt 3 2V The module will respond by powering down automatically without notice This form of power down is not recommended for regular use since the unexpected power loss may result in loss of data 3 AT Command MRST The AT MRST command initiates a G620 power off operation which powers off directly CFUN The AT CFUN 0 command initiates a G620 power off operation which de registration first and then powers off 3 5 Sleep Mode The module incorporates an optional low power mode called Sleep Mode in which it operates in minimum functionality and therefore draws significantly less current During Sleep Mode the module network connection is not lost The module will be waked up cycled and monitored the GSM network constantly for any incoming calls or data During Sleep mode a
28. r integration observe these recommendations Ensure 50 O antenna termination minimize the V S W R or return loss as this will optimize the electrical performance of the module Select antenna with best radiating performance If a cable is used to connect the antenna radiating element to application board select a short cable with minimum insertion loss The higher the additional insertion loss due to low quality or long cable the lower the connectivity will be Follow the recommendations of the antenna manufacturer for correct installation and deployment Do not include antenna within closed metal case Do not place antenna in close vicinity to end user since the emitted radiation in human tissue is limited by S A R regulatory requirements Do not use directivity antenna since the electromagnetic field radiation intensity is limited in some countries Take care of interaction between co located RF systems since the GSM transmitted power may interact or disturb the performance of companion systems Place antenna far from sensitive analog systems or employ countermeasures to reduce electromagnetic compatibility issues that may arise The modules are designed to work on a 50 O load However real antennas have no perfect 50 O load on all the supported frequency bands To reduce as much as possible performance degradation due to antenna mismatch the following requirements should be met Measure the antenna termination with a network ana
29. roduct s time to market The G620 is extremely compact in size with a slim mechanical design which makes it space saving on the application board and easily fitted into any board design The advanced power supply management significantly reduces power consumption to a necessary minimum and prolongs battery life G620 GPRS Module Hardware User Manual Page 7 of 34 Bs FIBOCOM 2 2 Specifications Product Features Operating Bands G620 A50 00 Dual Band 900 1800 MHz G620 Q50 00 Quad Band850 900 1800 1900 MHz G620 A50 01 Dual Band 900 1800 MHz Physical Characteristics Dimensions 24 mm x 24 5 mm x 2 6 mm Mounting SMT Weight 4g Operational Temperature 40 C to 85 C Storage Temperature 40 C to 85 C Performance Operating Voltage 3 3 4 5 V 4 0V is recommended Current Consumption Typical Value 1 6 mA Sleep mode 24 mA Q Idle mode 260 mA Q on call or CSD 420 mA on GPRS data MAX 2 0 A Burst 80uAQ Power off 12uA RTC only Tx Power 2 W 850 900 MHz 1 W 1800 1900 MHz Rx Sensitivity Typical Value 850 900MHz 108dBm 1800 1900MHz 107dBm Interfaces External SIM connectivity SIM Card 1 8V 3 0V UART Serial Ports BR from 1200 bps to 230400 bps Auto BR from 1200 bps to 230400 bps Data Features GPRS Class 10 Compliant 2Rx 4 Tx 5 Sum Coding scheme CS1 CS4 Class B
30. ronous serial port VCO Voltage Controlled Oscillator G620 GPRS Module Hardware User Manual Page 34 of 34
31. ser Manual Page 9 of 34 Bs FIBOCOM Pulse Duration 6 ms Repetition Time 6 directions 1000 times for each direction Others RTC inside Flexible status indicator Extend reset G620 GPRS Module Hardware User Manual Page 10 of 34 Bs FIBOCOM 3 Hardware Interface Description The following section describes in details the hardware requirements for properly interfacing and operating the G620 module 3 1 Block Diagram The G620 consists of the following blocks Antenna Figure 3 1 Digital Block e Micro controller Unit MCU for system and application code execution e Digital Signal Processor DSP for voice and data processing e Serial communications interfaces e SIM card e RealTime Clock RTC subsystem Analog Block e Power management inside e Internal regulators GSM Transceiver Block e 3gain stages for the low GSM band and high GSM band e 850 900 1800 1900 MHz G620 GPRS Module Hardware User Manual Page 11 of 34 Bs FIBOCOM e RF receiver which includes LNAs Mixers VCOs I O outputs and buffers e Signal processing IC for transmit and receive GSM data processing e FEM Front End Module e Includes a harmonic filter and antenna switch e Filter Dual band SAW filter that selects the required receive band 3 2 Operating Modes The module incorporates several operating modes Each operating mode is different in the active features and interfaces The following t
32. single external DC voltage source of 3 3V to 4 5V The power supply must be able to sustain the voltage level during a GSM transmit burst current serge which may reach 2 0A The G620 interface connector has 2 pins for the main power supply as described in the table All these contacts must be used for proper operation G620 GPRS Module Hardware User Manual Page 12 of 34 Bs FIBOCOM Pin Signal Name Description 17 DC power supply BATT BATT 3 3V to 4 5 V 18 4 0V is recommended 6 12 13 GND Ground 15 16 3 3 1 Power Supply Design Special care must be taken when designing the power supply of the module The single external DC power source indirectly supplies all the digital and analog interfaces but also directly supplies the RF power amplifier PA Therefore any degradation in the power supply performance due to losses noises or transients will directly affect the module performance The burst mode operation of the GSM transmission and reception draws instantaneous current surges from the power supply which causes temporary voltage drops of the power supply level The transmission bursts consume the most instantaneous current and therefore cause the largest voltage drop If the voltage drops are not minimized the frequent voltage fluctuations may degrade the module performance It is recommended that the voltage drops during a transmit burst will not exceed 300mV measured on the module interfac
33. tion e G620 GPRS Module AT Command User Manual e G620 GPRS Module AT Command Examples and Steps e G620 GPRS Module Developer s Kit e G620 GPRS Module Developer s Kit User Manual e G620 GPRS Module Developer s Kit Schematics e G620Flash Tool Software for Windows XP e G620 Mobile Analyzer Software for Windows XP G620 Modem Demo Software for Windows XP 1 4 Standards ETSI ETS 300 916 GSM 07 07 version 5 9 1 Release 1996 ETSI TS 100 585 GSM 07 05 version 7 0 1 Release 1998 ETSI ETS 300 901 GSM 03 40 version 5 8 1 Release 1996 ETSI TS 100 900 GSM 03 38 version 7 2 0 Release 1998 ETSI EN 300 607 1 GSM 11 10 1 version 8 1 1 Release 1999 ETSI TS 100 907 GSM 02 30 version 6 1 0 Release 1997 ETSI TS 100 549 GSM 03 90 version 7 0 0 Release 1998 ETSI TS 101 267 GSM 11 14 version 6 3 0 Release 1997 ETSI TS 100 977 GSM 11 11 version 6 3 0 Release 1997 G620 GPRS Module Hardware User Manual Page 5 of 34 Bs FIBOCOM ITU T V 25ter ETSI EN 300 908 GSM 05 02 version 8 5 1 Release 1999 ETSI TS 101 356 3GPP TS 07 60 version 7 2 0 Release 1998 G620 GPRS Module Hardware User Manual Page 6 of 34 Bs FIBOCOM 2 Overview This chapter gives a general description of the G620 module 2 1 Description G620 GPRS Module supports GSM GPRS bands 850 900 1800 1900 MHz with GPRS multi slot class 10 G620 can operate on any GSM GPRS network to provide data communications e G620450 00 Dual Band 900 1800 MHz e
34. tions V1 0 6 2013 02 01 Add information about G620 A50 01 V1 0 7 2013 06 04 Update Figure3 2 G620 GPRS Module Hardware User Manual Page 2 of 34 Bs FIBOCOM Contents Idle teesdSS 5 1 1 kIa o p R 5 1 2 PU lree M M I 5 1 3 Applicable DOCUMEntS M 5 EE e Ee EET EEEE ETEA EE EEEE EEE EEE E EEEE TE EEEE 5 Palme 3521 E 7 2 1 DDeScripEtlOD sszesccssszesseesszesscesacesccesatesccesesesccadesosceasesozccesaseyece auoaacadasosauesasonecoaatonecesadonacadasezcuasasopeuesatepeessatenesasatanecanaboneea aie ates 7 QD Specifications casscccsssiccessascaneasasnsavacasavzvassescanssacsavecennssucsevesennasasecnsosavayevetauataeadacnssactebccanasvctebeseanassieahsosnnasecetaiaiznndectenwanenaseees 8 3 Hardware Interface Description ssesscssicsscsssececsettavssscscasesacaceccannssaccasesenavenccansosanascesavatavaduscdnnasactabssenadsussawesedensascdnsotarasacedaaditenssscetes 11 3 1 BOCK BJF To c o e 11 3 2 Ser ir iseppelrj RES 12 33 Power SUPDIY m 12 3 3 1 Power Supply DeSIQM sesssseccssssssssessssesnsseessscenseecnesecnscesnecesssesssecsssscsssecsssscensesensseenseesneeecneesenecessecssseessssesseeessesees 13 En AE o ride eieieuc
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