GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 This document is relating to the following products: GE864-QUAD V2 Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 Contents 1 Overview ...........................................................................................................................6 2 GE864-QUAD V2 Mechanical Dimensions .....................................................................7 3 GE864-QUAD V2 module connections ...........................................................................8 3.1 PIN-OUT..................................................................
GE864-QUAD V2 Hardware User Guide 9.1.2 9.2 1vv0300841 Rev.0.1 24/11/09 Input Lines Characteristics ............................................................................................................ 42 OUTPUT LINES (Speaker) ....................................................................................................43 9.2.1 9.2.2 Short description............................................................................................................................
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 1 Overview The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE864-QUAD V2 module. In this document all the basic functions of a mobile phone module 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 2 GE864-QUAD V2 Mechanical Dimensions The Telit GE864-QUAD V2 module overall dimension are: • • • Length: Width: Thickness: 30 mm 30 mm 2.9 mm Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 3 GE864-QUAD V2 module connections 3.1 PIN-OUT Ball Signal I/O Function Internal PULL UP Type Audio F9 AXE I G8 MIC_HF+ AI G9 MIC_MT- AI G10 EAR_MT+ AO J8 MIC_MT+ AI J9 MIC_HF- AI J10 EAR_HF- AO Handsfree switching Handsfree mic. input; phase +, nom. level 3mVrms Handset mic.signal input; phase-, nom. level 50mVrms Handset earphone signal output, phase + Handset mic.signal input; phase+, nom.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 Ball H11 Signal ADC_IN2 I/O AI Function Internal PULL UP Analog/Digital converter input Type A/D Miscellaneous Functions A2 RESET* I Reset input D8 STAT_LED O Status indicator led CMOS 1.8V E2 VRTC AO VRTC Power F3 32K_IN I 32.768 KHz Square Wave Input CMOS 1.8V Pull up to VBATT J5 ON_OFF* I Input command for switching power ON or OFF (toggle command).
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 Ball Signal I/O Function G6 - - Reserved G7 - - Reserved G11 - - Reserved H4 - - Reserved H6 - - Reserved H7 - - Reserved J4 - - Reserved J6 - - Reserved J7 - - Reserved K9 - - Reserved K10 - - Reserved K11 - - Reserved L5 - - Reserved L7 - - Reserved L10 - - Reserved Internal PULL UP Type * Ref. to Digital Voice Interface Application Note 80000NT10004a.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 3.1.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 AUDIO Signals balls SIM CARD interface balls TRACE Signals balls Prog. / data + Hw Flow Control signals balls ADC signals balls MISCELLANEOUS functions signals balls TELIT GPIO balls POWER SUPPLY VBATT balls POWER SUPPLY GND balls RESERVED Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 4 Hardware Commands 4.1 Turning ON the GE864-QUAD V2 module To turn on the GE864-QUAD V2 the pad ON* must be tied low for at least 1 seconds and then released. The maximum current that can be drained from the ON* pad is 0,1 mA. A simple circuit to do it is: ON* R1 Q1 Power ON impulse R2 GND NOTE: don't use any pull up resistor on the ON* line, it is internally pulled up.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 A flow chart showing the proper turn on procedure is displayed below: Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 For example: 1- Let's assume you need to drive the ON* pad with a totem pole output from +1.8V up to 5V microcontroller (uP_OUT1): 10k ON* +1.8V ... 5V 1s 2- Let's assume you need to drive the ON* pad directly with an ON/OFF button: ON* Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 4.2 Turning OFF the GE864-QUAD V2 The turning off of the device can be done in three ways: • by software command (see GE864-QUAD V2 Software User Guide) • by hardware shutdown • by Hardware Unconditional Restart 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 4.2.2 Hardware Unconditional Restart To unconditionally Restart the GE864-QUAD V2, the pad RESET* must be tied low for at least 200 milliseconds and then released.A simple circuit to do it is: RESET* Unconditional Restart impulse GND The following flow chart shows the proper Reset procedure: Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 NOTE: don't use any pull up resistor on the RESET* line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE864-QUAD V2 power regulator and improper functioning of the module. The line RESET* must be connected only in open collector configuration. TIP: The unconditional hardware Restart should be always implemented on the boards and software should use it as an emergency exit procedure.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 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. 5.1 Power Supply Requirements POWER SUPPLY Nominal Supply Voltage 3.8V Max Supply Voltage 4.2V Operating Supply Voltage Range 3.4V – 4.2V Wide Supply Voltage tolerant 3.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 5.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 5.3 General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps: • the electrical design • the thermal design • the PCB layout. 5.3.1 Electrical Design Guidelines The electrical design of the power supply depends strongly from the power source where this power is drained.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 An example of linear regulator with 5V input is: 5.3.1.2 + 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 An example of switching regulator with 12V input is in the below schematic (it is split in 2 parts): Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 5.3.1.3 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 GE864-QUAD V2 module. The three cells Ni/Cd or Ni/MH 3,6 V Nom.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 5.3.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 5.3.3 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 7 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 GE864-QUAD V2 interface circuits: Absolute Maximum Ratings Parameter Min Input level on any -0.3V digital pin when on Input voltage on -0.3V analog pins when on Max +3.1V +3.0 V Operating Range - Interface levels (2.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 7.1 Reset signal Signal RESET Function Phone reset I/O I Bga Ball A2 RESET is used to reset the GE864-QUAD V2 modules. Whenever this signal is pulled low, the GE864QUAD V2 is reset. When the device is reset it stops any operation. After the release of the reset GE864-QUAD V2 is unconditionally shut down, without doing any detach operation from the network where it is registered.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 8 Serial Ports The serial port on the Telit GE864-QUAD V2 is the core of the interface between the module and OEM hardware. 2 serial ports are available on the module: • MODEM SERIAL PORT • MODEM SERIAL PORT 2 (DEBUG) 8.1 MODEM SERIAL PORT Several configurations can be designed for the serial port on the OEM hardware, but the most common are: • RS232 PC com port • microcontroller UART @ 2.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 The signals of the GE864-QUAD V2 serial port are: RS232 Pin Number Signal Name Usage DCD - dcd_uart GE864QUAD V2 Pad Number D9 1 Data Carrier Detect 2 3 4 RXD - tx_uart TXD - rx_uart DTR - dtr_uart H8 E7 B7 Transmit line *see Note Receive line *see Note Data Terminal Ready 5 GND Ground 6 DSR - dsr_uart A1,F1,H1 L1, H2, L2, J3, K3….
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 8.2 RS232 level translation In order to interface the Telit GE864-QUAD V2 with a PC com port or a RS232 (EIA/TIA-232) application a level translator is required.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 An example of level translation circuitry of this kind is: The example is done with a SIPEX SP3282EB RS232 Transceiver that could accept supply voltages lower than 3V DC. In this case Vin has to be set with a value compatible with the logic levels of the module. (Max 2.9V DC). In this configuration the SP3282EB will adhere to EIA/TIA-562 voltage levels instead of RS232 (-5 ~ +5V) Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 Second solution could be done using a MAXIM transceiver (MAX218) In this case the compliance with RS232 (+-5V) is possible. Another level adapting method could be done using a standard RS232 Transceiver (MAX3237EAI) adding some resistors to adapt the levels on the GE865 Input lines. NOTE: In this case has to be taken in account the length of the lines on the application to avoid problems in case of High-speed rates on RS232.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 translation If the OEM application uses a microcontroller with a serial port (UART) that works at a voltage different from 2.8 - 3V, then a circuitry has to be provided to adapt the different levels of the two set of signals. As for the RS232 translation there are a multitude of single chip translators.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 NOTE: The UART input line TXD (rx_uart) of the GE864-QUAD V2 is NOT internally pulled up with a resistor, so there may be the need to place an external 47KΩ pull-up resistor, either the DTR (dtr_uart) and RTS (rts_uart) input lines are not pulled up internally, so an external pull-up resistor of 47KΩ may be required. A power source of the internal interface voltage corresponding to the 2.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 9 Audio Section Overview 16 -12dBFS 16 8 audio2.skd The Base Band Chip of the GE864-QUAD V2 Telit Module 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 AXE hardware line or by AT command.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 9.1 INPUT LINES (Microphone) 9.1.1 Short description The Telit GE864-QUAD V2 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 9.1.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 9.2 OUTPUT LINES (Speaker) 9.2.1 Short description The Telit GE864-QUAD V2 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 9.2.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 10.1 GPIO Logic levels 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 GE864-QUAD V2 interface circuits: Absolute Maximum Ratings Parameter Min Max Input level on any digital pin when on -0.3V +3.1V Input voltage on analog pins when on -0.3V +3.0 V Operating Range - Interface levels (2.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 10.2 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 2.8V.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 10.5 Using the RFTXMON Output GPIO5 The GPIO5 pin, when configured as RFTXMON Output, is controlled by the GE864-QUAD V2 module and will rise when the transmitter is active and fall after the transmitter activity is completed. The TXMON pin behaviour can be configured using the AT command. # TXMONMODE Refer to AT Commands Reference Guide 80000ST10025a for the full description of this command.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 A sample interface scheme is included below to give you an idea of how to interface a Buzzer to the GPIO7: NOTE: To correctly drive a buzzer a driver must be provided, its characteristics depend on the Buzzer and for them refer to your buzzer vendor. Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 10.8 Indication of network service availability The STAT_LED pin status shows information on the network service availability and Call status. In the GE864-QUAD V2 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 10.9 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11 DAC and ADC section 11.1 DAC Converter 11.1.1 Description The GE864-QUAD V2 module provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on BGA Ball C7 of the GE864-QUAD V2 module and on pin 17 of PL102 on EVK2 Board (CS1302). The on board DAC is a 10-bit converter, able to generate a analogue value based a specific input in the range from 0 up to 1023.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.1.2 Enabling DAC An AT command is available to use the DAC function. The command is AT#DAC[=[,]] - scale factor of the integrated output voltage (0..1023 – 10 bit precision) it must be present if =1 Refer to SW User Guide or AT Commands Reference Guide for the full description of this function. NOTE: The DAC frequency is selected internally. D/A converter must not be used during POWERSAVING. 11.1.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.2 ADC Converter 11.2.1 Description The on board A/D are 11-bit converter. They are able to read a voltage level in the range of 0÷1.9 volts applied on the ADC pin input, store and convert it into 11 bit word. Input Voltage range AD conversion Resolution Min 0 - Max 1.9 11 <1 Units Volt bits mV The GE864-QUAD V2 module provides 2 Analog to Digital Converters.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.3 Mounting the GE864-QUAD V2 on your Board 11.3.1 General The Telit GE864-QUAD V2 modules have been designed in order to be compliant with a standard lead-free SMT process. 11.3.2 Module finishing & dimensions Pin A1 Lead-free Alloy: Surface finishing Sn/Ag/Cu for all solder pads Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.3.3 Recommended foot print for the application (GE864) Top View Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.3.4 Debug of the GE864 in production To test and debug the mounting of the GE864, we strongly recommend to foreseen test pads on the host PCB, in order to check the connection between the GE864 itself and the application and to test the performance of the module connecting it with an external computer.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.3.6 PCB pad design Non solder mask defined” (NSMD) type is recommended for the solder pads on the PCB. Recommendations for PCB pad dimensions Ball pitch [mm] Solder resist opening diameter A [mm] Metal pad diameter B [mm] 2,5 1,150 1 ± 0.05 Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 It is not recommended to place via or microvia not covered by solder resist in an area of 1,6mm diameter around the pads unless it carries the same signal of the pad itself. (see following figure). Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB pad surfaces: Finish Layer thickness [µm] Electro-less Ni / 3 –7 / Immersion Au 0.05 – 0.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.3.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.4 Packing system The Telit GE864 modules are packaged on trays of 20 pieces each. This is especially suitable for the GE864 according to SMT processes for pick & place movement requirements. Section A-A The size of the tray is: 329 x 176mm NOTE: These trays can withstand at the maximum temperature of 65° C. Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 11.4.1 GE864 orientation on the tray 11.4.2 Moisture sensibility The level of moisture sensibility of GE864 module is “3”, in according with standard IPC/JEDEC J-STD020, take care all the relatives requirements for using this kind of components. Reproduction forbidden without Telit Communications S.p.A.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 12 Conformity Assessment Issues The GE864-QUAD V2 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.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 13 SAFETY RECOMMANDATIONS READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required.
GE864-QUAD V2 Hardware User Guide 1vv0300841 Rev.0.1 24/11/09 14 Document Change Log Revision Date Changes ISSUE#0 ISSUE#0.1 01/07/08 24/11/09 First Release from rev 7 of 1vv0300779 Antenna Gain values changed at section 6 and 12. Reproduction forbidden without Telit Communications S.p.A.
