3 GE863-PRO Hardware User Guide 1vv0300773a Rev.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Contents 1 Overview ........................................................................................................................... 6 2 GE863-PRO3 Mechanical Dimensions ............................................................................ 7 3 GE863-PRO3 module connections .................................................................................. 8 4 3.1 BALL-OUT ................................................
GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 7.2 8 RS232 level translation........................................................................................................... 41 Audio Section Overview ................................................................................................ 44 8.1 INPUT LINES (Microphone) ................................................................................................... 45 8.1.1 8.1.2 8.2 OUTPUT LINES (Speaker) .......
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 This document is relating to the following products: GE863-PRO3 GE863-PRO3 with Linux OS 3990250691 3990250698 Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 DISCLAIMER The information contained in this document is the proprietary information of Telit Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Telit, is strictly prohibited.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 1 Overview The scope of this document is the description of some hardware solutions useful for developing a product with the Telit GE863-PRO3 module. In this document all the basic functions of a M2M device will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be evidenced.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 2 3 GE863-PRO Mechanical Dimensions The Telit GE863-PRO3 module overall dimension are: • Length: 41,4 mm • Width: 31,4 mm • Thickness: 3,6 mm Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 3 3 GE863-PRO module connections 3.
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3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Ball Signal E10 C104/RXD E11 I/O Main Function Internal Pull up ARM/ GSM Type O Serial data output to DTE GSM CMOS 2.8V PB8 I/O ARM PIO Controller B pin 8 ARM CMOS 3.1V E12 PB9 I/O ARM PIO Controller B pin 9 ARM CMOS 3.1V F1 PB13 I/O ARM PIO Controller B pin 13 ARM CMOS 3.1V F2 PC30 I/O ARM PIO Controller C pin 30 ARM CMOS 1.8V-A F3 PC21 I/O ARM PIO Controller C pin 21 ARM CMOS 1.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Ball Signal I/O H9 PC18 H10 ARM/ GSM Type I/O ARM PIO Controller C pin 18 ARM CMOS 1.8V-A PB0 I/O ARM PIO Controller B pin 0 ARM CMOS 3.1V H11 PB2 I/O ARM PIO Controller B pin 2 ARM CMOS 3.1V H12 PB1 I/O ARM PIO Controller B pin 1 ARM CMOS 3.1V J1 PB7 I/O ARM PIO Controller B pin 7 ARM CMOS 3.1V J2 PB28 I/O ARM PIO Controller B pin 28 ARM CMOS 3.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Ball Signal I/O L10 GND - L11 HDMB L12 Main Function Internal Pull up - ARM/ GSM Type - Power A USB Host Port B Data - ARM USB HDPB A USB Host Port B Data + ARM USB M1 XIN32 I ARM CMOS VRTC M2 XOUT32 ARM CMOS VRTC M3 RESERVED - RESERVED (3) - - - M4 RESERVED - RESERVED (3) - - - M5 PB14 I/O ARM PIO Controller B pin 14 ARM CMOS 3.1V M6 PB15 I/O ARM PIO Controller B pin 15 ARM CMOS 3.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Ball Signal I/O Main Function P11 3.1V_OUT P12 VBATT2 - Main ARM Power Supply R1 GND - Ground R2 GND - R3 GND - R4 PA21 R5 Internal Pull up ARM/ GSM Type ARM - ARM Power - - Power Ground - - Power Ground - - Power I/O ARM PIO Controller A pin 21 ARM CMOS 3.1V PA18 I/O ARM PIO Controller A pin 18 ARM CMOS 3.1V R6 PA17 I/O ARM PIO Controller A pin 17 ARM CMOS 3.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 3.2 BALLS LAYOUT TOP VIEW Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 3.
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3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 TIP: For further documentation on ARM processor refer to ATMEL AT91SAM9260 datasheet 4 Hardware Commands 3 4.1 Turning ON the GE863-PRO GSM/GPRS Engine 3 To turn on the GE863-PRO GSM/GPRS engine the pad ON/OFF*-GSM must be tied low for at least 1 second and then released. The maximum current that can be drained from the ON/OFF*-GSM pad is 0,1 mA.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10k For example: 1- Let's assume you need to drive the ON/OFF*-GSM pad with a totem pole output of a +3/5 V microcontroller (uP_OUT1): +1,8/5 V 1s 2- Let's assume you need to drive the ON/OFF*-GSM pad directly with an ON/OFF button: Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 3 4.2 Turning OFF the GE863-PRO GSM/GPRS Engine The turning off of the device can be done in two ways: • 3 by software command (see GE863- GE863-PRO Software User Guide) • by hardware shutdown When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more. 4.2.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 NOTE: don't use any pull up resistor on the RESET*-GSM line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE863-PRO3 power regulator and improper functioning of the module. The line RESET*-GSM must be connected only in open collector configuration. TIP: The unconditional hardware reboot should be always implemented on the boards and software should use it as an emergency exit procedure.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 A simple circuit to do it is: ON/OFF*-AP # R1 Q1 Power ON/OFF R2 GND NOTE: don't use any pull up resistor on the ON/OFF*-AP line, it is internally pulled up to VBATT2. Using pull up resistor may bring to latch up problems on the GE863-PRO3 power regulator and improper power on/off of the module. The line ON/OFF*-AP must be connected only in open collector configuration or tied to ground (if ARM needs to stay always on).
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5 Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performances, hence read carefully the requirements and the guidelines that will follow for a proper design.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 GSM TX and RX mode Min power level 78,0 Max power level 200,0 GPRS (class 10) TX and RX mode Min power level 124,0 Max power level 371,0 GSM Sending data mode GPRS Sending data mode The GSM system is made in a way that the RF transmission is not continuous, else it is packed into bursts at a base frequency of about 216 Hz, the relative current peaks can be as high as about 2A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 The suggested circuit is: GE863-PRO 3 VRTC 10K Ω 3V Lithium primary battery 1μ F ceramic S-817A19A Seiko 1μ F ceramic 1.2μΑ The quoted current intensity are without VBATT power supply for the module. The S-817A19A Seiko LDO has a value of 1.2μA Typ for the quiescent current. Without VBATT power supply voltage, the VRTC Reverse Current is 7- 8 μA Typ.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5.4.1.1 + 5V input Source Power Supply Design Guidelines • The desired output for the power supply is 3.8V, hence there's not a big difference between the input source and the desired output and a linear regulator can be used. A switching power supply will not be suited because of the low drop out requirements. • When using a linear regulator, a proper heat sink shall be provided in order to dissipate the power generated.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5.4.1.2 + 12V input Source Power Supply Design Guidelines • The desired output for the power supply is 3.8V, hence due to the big difference between the input source and the desired output, a linear regulator is not suited and shall not be used. A switching power supply will be preferable because of its better efficiency especially with the 2A peak current load represented by the GE863-PRO3.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5.4.1.3 Battery Source Power Supply Design Guidelines • The desired nominal output for the power supply is 3.8V and the maximum voltage allowed is 4.2V, hence a single 3.7V Li-Ion cell battery type is suited for supplying the power to the Telit GE863-PRO3 module. The three cells Ni/Cd or Ni/MH 3,6 V Nom.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 • The battery capacity must be at least 500mAh in order to withstand the current peaks of 2A; the suggested capacity is from 500mAh to 1000mAh. 5.4.1.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Last but not least, in some applications it is highly desired that the charging process restarts when the battery is discharged and its voltage drops below a certain threshold, GE863-PRO3 internal charger does it. As you can see, the charging process is not a trivial task to be done; moreover all these operations should start only if battery temperature is inside a charging range, usually 5°C - 45°C.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5.4.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 5.4.3 Power Supply PCB layout Guidelines As seen on the electrical design guidelines the power supply shall have a low ESR capacitor on the output to cut the current peaks and a protection diode on the input to protect the supply from spikes and polarity inversion. The placement of these components is crucial for the correct working of the circuitry. A misplaced component can be useless or can even decrease the power supply performances.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 6 Antenna The antenna connection and board layout design are the most important part in the full product design and they strongly reflect on the product overall performances, hence read carefully and follow the requirements and the guidelines for a proper design. 6.
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3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 6.3 GSM Antenna - installation Guidelines • Install the antenna in a place covered by the GSM signal. • The Antenna must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter; • Antenna shall not be installed inside metal cases • Antenna shall be installed also according Antenna manufacturer instructions. 6.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 6.5 Logic level specifications Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following table shows the logic level specifications used in the Telit GE863-PRO3 interface circuits: Absolute Maximum Ratings -Not Functional Parameter Min Max Input level on any -0.3V +3.6V digital pin when on Input voltage on -0.3V +3.0 V analog pins when on Voltage on Buffered -0.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Operating Range - Interface levels (CMOS 1.8V-ARM) Level Min Max Input high level Input low level Output high level Output low level 1.3V -0.3V 1.35V 0V 2.1V 0.5V 1.9V 0.45V Operating Range - Interface levels (CMOS VRTC) Level Min Max Input high level Input low level Output high level Output low level 1.3V -0.3V 1.3V 0V 2.1V 0.5V 2.0V 0.5V GSM GPIO Current characteristics Level Typical Output Current 1mA Input Current 1uA CMOS 3.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 6.5.1 GSM Reset signal Signal RESET*-GSM Function Phone reset I/O I Bga Ball E5 RESET*-GSM is used to reset the GE863-PRO3 modules GSM/GPRS engine. Whenever this signal is pulled low, the GSM/GPRS engine is reset. When the device is reset it stops any operation. After the release of the reset the GSM/GPRS engine is unconditionally shut down, without doing any detach operation from the network where it is registered.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 7 Serial Ports The serial port on the Telit GE863-PRO3 is the core of the interface between the module engine and the ARM processor. 2 serial ports are available on the module engine: • MODEM SERIAL PORT • MODEM SERIAL PORT 2 (DEBUG) 6+1(DBG) serial ports are available on the ARM part. No direct connection is present between the two parts, on the hosting PCB the two serial ports need to be interconnected.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 7.2 RS232 level translation In order to interface the Telit GE863-PRO3 with a PC com port or a RS232 (EIA/TIA-232) application a level translator is required.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 An example of level translation circuitry of this kind is: Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 The RS232 serial port lines are usually connected to a DB9 connector with the following layout: Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 8 Audio Section Overview The Base Band Chip of the GE863-PRO3 GSM/GPRS engine provides two different audio blocks; both in transmit (Uplink) and in receive (Downlink) direction: “MT lines” should be used for handset function, “HF lines” is suited for hands -free function (car kit). These two blocks can be active only one at a time, selectable by AT command.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 8.1 INPUT LINES (Microphone) 8.1.1 Short description The Telit GE863-PRO3 provides two audio paths in transmit section. Only one of the two paths can be active at a time, selectable by AXE hardware line or by AT command.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 8.1.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 8.2 OUTPUT LINES (Speaker) 8.2.1 Short description The Telit GE863-PRO3 provides two audio paths in receive section. Only one of the two paths can be active at a time, selectable by AXE hardware line or by AT command.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 8.2.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 9 The Evaluation Kit for Telit GE863PRO3 Modules 9.1.1 Short Description 3 Telit supplies the Evaluation Kit for Telit GE863-PRO modules to assist the designer in developing his 3 own applications based on GE863-PRO Telit module. 3 The GE863-PRO EVK is formed by a mother board and a dedicated Telit module Interface Board with RF antenna connectors. It provides a fully functional solution for a complete M2M application.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10 GSM/GPRS General Purpose I/O The general purpose I/O pads can be configured to act in three different ways: • input • output • alternate function (internally controlled) The following GSM/GPRS engine GPIO are available on the GE863-PRO3: Ball Signal I/O Function Type Input / output current Default State E6 GPIO1 I/O GPIO01 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW 55 GPIO2 I/O GPIO02 Configurable GPIO CMOS 2.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10.1 Using a GPIO Pad as INPUT The GPIO pads, when used as inputs, can be connected to a digital output of another device and report its status, provided this device has interface levels compatible with the 2.8V CMOS levels of the GPIO. If the digital output of the device to be connected with the GPIO input pad has interface levels different from the 2.8V CMOS, then it can be buffered with an open collector transistor with a 47K pull up to 2.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10.5 Using the Alarm Output The GSM/GPRS engine GPIO pads, when configured as Alarm Output, can be controlled by the GE863-PRO3 module and will rise when the alarm starts and fall after the issue of a dedicated AT command.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10.7 Indication of network service availability The STAT_LED pin status shows information on the network service availability and Call status. In the GE863 modules, the STAT_LED usually needs an external transistor to drive an external LED. Therefore, the status indicated in the following table is reversed with respect to the pin status.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 10.8 RTC Bypass out The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the digital part, allowing having only RTC going on when all the other parts of the device are off. To this power output a backup capacitor can be added in order to increase the RTC autonomy during power off of the battery. NO Devices must be powered from this pin. 10.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 3 11 Mounting the GE863-PRO on the Application Board 11.1 General The Telit GE863-PRO3 module has been designed in order to be compliant with a standard lead-free SMT process 11.1.1 Stencil Stencil’s apertures layout can be the same of the recommended footprint (1:1), we suggest a thickness of stencil foil ≥ 120µm. 11.1.2 PCB pad Design “Non solder mask defined” (NSMD) type is recommended for the solder pads on the PCB.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Recommendations for PCB pad dimensions Ball pitch [mm] Solder resist opening diameter A [mm] Metal pad diameter B [mm] 2 1,150 1 ± 0.05 Placement of microvias not covered by solder resist is not recommended inside the “Solder resist opening”, unless the microvia carry the same signal of the pad itself. Holes in pad are allowed only for blind holes and not for through holes.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 11.1.4 GE863-PRO3 Solder Reflow The following is the recommended solder reflow profile Reproduction forbidden without Telit Communications S.p.A.
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3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 11.1.5 Packing System 170 ± 0,3 According to SMT processes for pick & place movement requirements, Telit GE863-PRO3 modules are packaged on trays, each tray contains 20 pieces. Tray dimensions are: 320 ± 0,3 All quotes are in mm, general tolerance ± 0.1 Note that trays can withstand a maximum temperature of 65° C. Section A-A 6.1 Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 Modules orientation on tray: Ref. Not rounded corner of module’s printed board indicates pin 1 corner. The modules in the tray are oriented as shown in A and the tray is oriented toward left as shown in B. A B Reproduction forbidden without Telit Communications S.p.A.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 11.1.6 Moisture Sensibility The level of moisture sensibility of Telit GE863-PRO3 modules is “3”, according with standard IPC/JEDEC J-STD-020, take care of all the relative requirements for using this kind of components.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 12 Conformity Assessment Issues The GE863-PRO3 module is assessed to be conform to the R&TTE Directive as stand-alone products, so If the module is installed in conformance with Dai Telecom installation instructions require no further evaluation under Article 3.2 of the R&TTE Directive and do not require further involvement of a R&TTE Directive Notified Body for the final product.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 13 SAFETY RECOMMANDATIONS READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required.
3 GE863-PRO Hardware User Guide 1vv0300773a Rev. 0 - 24/01/08 14 Document Change Log Revision ISSUE #0 Date 24/01/08 Changes First release Reproduction forbidden without Telit Communications S.p.A.