G610 GPRS Module Hardware User Manual Version: V1.0.
Confidential Material This document contains information highly confidential to Shenzhen G&T Industrial Development Co., Ltd (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.
Contents 1 2 3 Preface ................................................................................................................................................ 6 1.1 Manual Scope .......................................................................................................................... 6 1.2 Target Audience ....................................................................................................................... 6 1.3 Applicable Documents .........................
3.7 3.8 3.9 3.10 3.11 4 5 6 Serial Interfaces ..................................................................................................................... 23 3.7.1 Ring indicate................................................................................................................ 24 3.7.2 DCD indicate ............................................................................................................... 25 SIM Interface ..................................................
6.1 Antenna Installation................................................................................................................ 45 6.2 Antenna Subsystem ............................................................................................................... 45 6.2.1 Antenna Specifications................................................................................................ 45 6.2.2 Cable Loss ....................................................................................
Preface 1 Preface 1.1 Manual Scope This manual provides the electrical, mechanical and environmental requirements for properly integrating the G610 GPRS module in a host application. This manual gives a complete set of hardware features and functions that may be provided by G610. The availability of any feature or function, which is described in this manual, depends on the hardware revision and software version of a specific G610 GPRS module. 1.
Preface 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) 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) 1.5 Regulatory Approvals 1.6 FCC Notice to Users The G610 Module has been granted modular approval for mobile applications.
2 Introduction 2.1 Product concept G610 GPRS Module supports four GSM bands 850/900/1800/1900 MHz, and with GPRS multi-slot class 10, G610 can operate on any GSM/GPRS network to provide voice and data communications. The G610 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.
2.2 Product Specifications Product Features Operating systems: Quad Band GSM850/900/1800/1900 MHz Physical Characteristics Size: 31.4 x 20.2 x 3.0 mm Mounting: SMT Weight: 3.5 grams 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: 1.6 mA @ Sleep mode 24 mA @ Idle mode 260 mA @ on call or CSD 420 mA @ on GPRS data MAX 2.
Data Features GPRS: Multi-slot class 10 (4 Rx / 2 Tx / 5 Sum) Max Downlink BR 85.6 kbps Coding scheme CS1-CS4 Class B GSM 07.10 multiplexing protocol CSD: Max BR 9.
3 Hardware Interface Description The following paragraphs describe in details the hardware requirements for properly interfacing and operating the G610 module. 3.1 Architecture Overview The G610 consists of the following blocks: 3.1.1 Digital Block Micro-controller Unit (MCU) for system and application code execution. Digital Signal Processor (DSP) for voice and data processing. Serial communications interfaces.
BATT voltage A/D inside 3.1.3 GSM Transceiver Block 3 gain stages for the low GSM band and high GSM band 850/900/1800/1900 MHz RF receiver, which includes LNAs, Mixers, VCOs, I/Q outputs and buffers. Signal processing IC for transmit and receive GSM data processing. FEM - Front End Module. Includes a harmonic filter and antenna switch Filter - Dual-band SAW filter that selects the required receive band. 3.2 Operating Modes The G610 incorporates several operating modes.
The G610 is in low power mode. The application interfaces are disabled, but, Sleep Mode CTS_N signal is wave. G610 continues to monitor the GSM network. A GSM voice or data call is in progress. Call or CSD call LPG signal is toggling. When the call terminates, G610 returns to or GPRS data the last operating state (Idle or Sleep). 3.3 Power Supply The G610 power supply must be a single external DC voltage source of 3.3V to 4.5V.
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 G610 performance. 300mV max BATT 3.3V min TX_EN It is recommended that the voltage drops during a transmit burst will not exceed 300mV, measured on the G610 interface connector.
8.2 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 G610 current consumption ratings in various operating modes. The current ratings refer to the overall G610 current consumption over the BATT supply. Measurements were taken under the following conditions: BATT = 4.
1 TX slot 1 Rx slot 19 300 DCS/PCS PCL=0 1400 15 300 GSM850/900 I gprs-avg Average current PCL=5 420 GPRS Class 10 19 150 2 TX slot 2 Rx slot DCS/PCS PCL=0 380 15 150 mA 3.4 Power On/Off Operation The G610 power on and off is the two primary phases, which are related at the interface connector by the hardware signals POWER_ON, VDD. The POWER_ON signal is main controller. The VDD signal indicates whether G610 is powered on or off. When this signal is disable (0V), G610 is powered-off.
The figure illustrates the G610 power on is succeeded. VDD POWER_ON The figure illustrates the G610 power on is failed. VDD POWER_ON 3.4.2 Turning the G610 Off There are several ways to turn the G610 off: 3.4.2.1 Asserting the POWER_ON signal low for a minimum of 3 seconds. Under voltage automatic shutdown. Overvoltage automatic shutdown. AT command. Turning the G610 Off Using POWER_ON The POWER_ON signal is set high using an internal pull up resistor when power is applied to G610.
will turn G610 off. This will initiate a normal power-off process, which includes disabling of all applications interfaces (UART, SIM card, audio, etc.) and logout the network connection. VDD POWER_ON Turn off failed 3.4.2.2 Undervoltage automatic shutdown A low power shut down occurs when G610 senses the external power supply is below the minimal operating limit (VBAT ≤3.2V). The module will respond by powering down automatically without notice.
G610 interface signals are inactive and are kept in their previous state, prior to activating low power mode. To save power, all the G610 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 G610 serial interfaces are active.
calls or data. After this short paging is completed, G610 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 G610 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.
Incoming Network Data During Sleep mode, G610 continues monitoring the GSM network for any incoming data, message or voice calls. When G610 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 G610 wakes up to Idle mode all its interfaces are enabled.
CTS_N enabled, the data will not be lost. And G610 will go back to Idle mode for response. b) The G610 serial interfaces be set NONE FLOW (AT+IFC=0,0)(The default value) If the G610 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 G610 anytime, the data will be lost. But then G610 will go back to idle mode if data and CTS_N enabled at the same time. 3.5.3.
T(s) ≈ C(uF)/1.3 3.6.2 RTC Application The G610 time and date can be set using the following methods: Automatically retrieved from the GSM network. In case G610 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. Using the AT+CCLK command. Setting the time and date manually by this AT commands overrides the automatic network update.
DTE Notice DCE 42 RTS_N Request To Send DTE→DCE Requested To Send 40 DTR_N 43 CTS_N Data Terminal Ready DTE Was Ready Module DCE Switch To Clear To Send Received Mode DTE→DCE DCE→DTE Data Carrier Was 41 DCD_N Data Carrier Detect DCE→DTE Online The recommended connection was seeing as below.
application from power saving state. In IDLE mode, the RING_N is high. It is only indicating a type of event at a time: a) 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. b) When a FAX call comes in, the RING_N line low for 1s and high for another 4s. Every 5 seconds as a cycle. c) When a Short massage comes in, the RING_N line to low for 150 mS, and always high. 3.7.
The G610 supports 1.8V or 3.0V SIM card automatic. While the G610 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. Important: If SIM_VCC is supplied, remove SIM card is prohibited. In case, it would damage both SIM card and G610. G610 Pin# G610 Signal name Description 5 SIM_CLK Serial 3.25 MHz clock 2 SIM_VCC 2.
sources, such as the RF antenna and digital switching signals. The SIM interface signals length should not exceed 100 mm between the G610 interface connector and the SIM tray. This is to meet with EMC regulations and improve signal integrity. To avoid 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.
16 EAR- 1st Audio channel 15 EAR+ Output is balanced and can directly operate an head set 18 AUXO+ 2nd Audio channel 17 AUXO- Output is balanced and can directly operate an hand free speaker 3.9.1 1st Audio Channel: Microphone This channel is the G610 power-up default active audio channel. The microphone input includes all the necessary circuitry to support a direct connection to an external microphone device. It incorporates an internal bias voltage which can be adjusted by AT command.
command. It has an impedance of 2 kΩ. The bias voltage would be supplied after G610 powered on. Parameter Conditions Bias Voltage No load Gain Programmable Min Typ 0 Max Unit 2.5 V 45 dB in 3 dB steps AC Input 2 kΩ Impedance 3.9.4 2nd Audio Channel: Speaker This channel is switched on by AT Command. It is designed as a differential output and can be droved a 8Ω speaker directly. Parameter Conditions Min Typ No load Single Max Unit 500 mVPP Output Voltage ended AC Output 8 Ω 1.
through the microphone input signals and then are amplified by the G610's internal audio amplifiers. To minimize the audio noise and improve the audio performance the microphone and speaker signals must be designed with sufficient protection from surrounding noises. The following guidelines should be followed to achieve best audio performance: Reference the microphone input circuits to the G610 AGND interface signal.
lasted 8 samples are compared and averaged to provide a stable and valid result. In Sleep mode, the ADC is stopped. When the G610 switch to Idle mode, the ADC should be stable after 5mS. 3.10.1 Power Supply ADC The main power supply (BATT) is sampled internally by the G610 ADC interface through a dedicated input, which is not accessible on the interface connector. The G610 constantly monitors the power supply for any low or high voltage. Parameter Conditions Min Supply Range Operating range 3.
G610 Pin# G610 Signal name 9 VDD Description LDO power output Illustrating module start up 49 LPG 7 RESET_N Module work status indicator Extend reset module Low level activated 3.11.1 VDD Reference Regulator The G610 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 G610 started up by power on signal, The VDD is output.
circuit. Parameter Conditions T width Min Typ Max Unit 100 200 400 mS 3.11.3 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 G610 status straight. Referenced circuits about LED driver see below. States of the LED vs PIN: LED Off = HIGH. LED On = LOW.
When the G610 POWER ON , the LPG timing see as below: POWER_ON Register network IDLE mode 3.11.4 Trace Ports The GSM/GPRS network and G610 module is incorporated a complicated system. The G610 prepared the trace function for debugged or acquired the data of the system. The G610 transfer these data from SPI port. It can be operated on the PC software and execute by SPI adaptor to RS232. Important: It’s recommend that reserved these ports and connected to a socket in any design.
3.11.5 General Purpose I/O The G610 incorporates 8 general purpose IO signals for the user application. Each GPIO signal may be configured and controlled by AT command. These signals may be used to control or set external application circuits, or to receive indications from the external application.
4 Electrical and Environmental Specifications Absolute Maximum Ratings 4.1 Electrical Specifications Absolute Maximum Ratings The table gives the maximum electrical characteristics of the G610 interface signals. Caution: Exceeding the values may result in permanent damage to the module. Parameter Conditions BATT Supply Digital Input Signals G610 powered on Min Max Unit -0.2 4.5 V -0.2 3.3 V -0.2 2.75 V VDD Domain Analog Input Signals G610 powered on (Audio, A/D interfaces) 4.
default state. Do not connect any components to, or apply any voltage on, signals that are not used by the application. G610 Pin# G610 Signal name Description Reset Idle level level I/O Level Character Power 26 BATT DC power supply GND Ground I 3.3V ~ 4.5V 27 1 21 22 24 25 28 46 1.86V ~ 2.14V 8 VBACKUP Real time clock power I/O 2.0V 2.
43 CTS_N Clear To Send O CP L 41 DCD_N Data Carrier Detect O CP H SIM Interface (3.0V) 2 SIM_VCC SIM power O 1.8V ±3% 2.85V Output current <10mA 0.3V 5 SIM_CLK SIM clock O T 3.58MHz 4 SIM_DATA SIM data I/O OD/PD Wave 6 SIM_RST SIM reset O T L VOLMAX=0.35V SIM on site detect VILMAX=0.2*VSIM High level is on site 3 VOHMIN=VSIM-0.35V SIM_CD I T L VIHMIN=0.
35 GPIO01 General purpose IO O T T VOHMIN=VDD-0.35V VILMAX=0.2V 34 GPIO02 General purpose IO O T T 33 GPIO03 General purpose IO O T T 32 GPIO04 General purpose IO O T T 54 GPIO36 General purpose IO O CP H 55 NC VIHMIN=0.7*VDD 注： 1. CP=Center Pin; T= 3 Status; PD= Pull Down; PU=Pull Up; OD=Open Drain 2.
5 Mechanical Design 5.
5.
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.
The following parameters should be checked: Item Recommendations Impedance 50 Ω Frequency Depends on the Mobile Network used. Range GSM900: 880~960 MHz GSM1800: 1710~1880 MHz GSM850: 824~894 MHz GSM1900: 1850~1990 MHz Input Power >2 W peak V.S.W.R <2:1 recommended <3:1 acceptable Return Loss S11<-10 dB recommended, S11<-6 dB acceptable Gain <3 dBic Typically GSM antennas are available as: Linear monopole: typical for fixed application.
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.
6 Antenna Interface The RF interface of the G610 Module has an impedance of 50Ω. The module is capable of sustaining a total mismatch at the antenna connector or pad without any damage, even when transmitting at maximum RF power. The external antenna must be matched properly to achieve best performance regarding radiated power, DC-power consumption, modulation accuracy and harmonic suppression. Antenna matching networks are not included on the G610 Module PCB and should be placed in the host application.
specific type of cable that interfaces with their antenna and ask them to detail the RF losses of the cables supplied along with the antenna. Typically, the cable length should be such that they have no more than 1-2dB of loss. Though the system will work with longer (lossy) cables, this will degrade GSM system performance. Care should also be taken to ensure that the cable end Connectors/terminations are well assembled to minimize losses and to offer a reliable, sturdy connection to the Module sub-system.
connector.
