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Telit Wireless Solutions GE863-PY Pb balls, Hardware User'S Manual

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Telit Wireless Solutions GE863-PY Pb balls Hardware User'S Manual Download Page 32

Telit GE863-QUAD / GE863-PY 

Hardware User guide

 

1vv0300715, Rev. ISSUE#0, - 21/02/06 

 

 

 

Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved

 

page 32 of 71

 

NOTE: The microphone sensitivity changes with the value of R2 and R3. Usually the microphones 
are characterized with 2k

Ω

 biasing resistance, so try to keep the sum of R2 and R3 around 2k

Ω

.  

Refer to your microphone manufacturer for the mic. characteristics. 

Summary of Contents for GE863-PY Pb balls

Page 1: ...tion forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 1 of 71 T Te el li it t G GE E8 86 63 3 Q QU UA AD D G GE E8 86 63 3 P PY Y H Ha...

Page 2: ...General Design Rules 11 3 2 1 Electrical design Guidelines 11 3 2 1 1 5V input Source Power Supply Design Guidelines 11 3 2 1 2 12V input Source Power Supply Design Guidelines 13 3 2 1 3 Battery Sour...

Page 3: ...fered Unbalanced Single Ended Mic 37 7 SPEAKER 40 7 1 Speaker lines characteristics and requirements 40 7 2 General Design rules 42 7 2 1 Noise Filtering 43 7 3 Handset earphone design 43 7 4 Hands Fr...

Page 4: ...6 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 4 of 71 10 CONFORMITY ASSESSMENT ISSUES 57 11 SAFETY RECOMMANDATIONS 5...

Page 5: ...to be avoided shall be considered as mandatory while the suggested hardware configurations shall not be considered mandatory instead the information given shall be used as a guide and a starting point...

Page 6: ...0 1 mA A simple circuit to do it is NOTE don t use any pull up resistor on the ON line it is internally pulled up Using pull up resistor may bring to latch up problems on the GE863 QUAD PY power regul...

Page 7: ...ithout Telit Communication written authorization All Right reserved Right of modification reserved page 7 of 71 For example 1 Let s assume you need to drive the ON pad with a totem pole output of a 3...

Page 8: ...work that the device will not be reachable any more 2 2 1 Hardware shutdown To turn OFF the GE863 QUAD PY the pad ON must be tied low for at least 1 second and then released The same circuitry and tim...

Page 9: ...m pole digital output Using pull up resistor may bring to latch up problems on the GE863 QUAD PY power regulator and improper functioning of the module The line RESET must be connected only in open co...

Page 10: ...nsmission rms 270 mA Average current during Power Saving 4 mA Average current during idle Power Saving disabled 19 mA The GSM system is made in a way that the RF transmission is not continuous else it...

Page 11: ...utomotive Battery 3 2 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 out...

Page 12: ...are User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 12 of 71 An example of li...

Page 13: ...nductor size and its faster transient response This allows the regulator to respond quickly to the current peaks absorption For car PB battery the input voltage can rise up to 15 8V and this should be...

Page 14: ...to avoid polarity inversions when connecting the battery 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 3 2...

Page 15: ...tery is considered fully charged when the pulse duty cycle is less than a threshold value typically 10 the pulse charge stops and eventually the maintenance starts The last phase is not properly a cha...

Page 16: ...at which the device is requested to transmit by the network The average current consumption hence varies significantly TIP The thermal design for the Power supply should be made keeping an average co...

Page 17: ...drops occur when the 2A current peaks are absorbed Note that this is not made in order to save power loss but especially to avoid the voltage drops on the power line at the current peaks frequency of...

Page 18: ...PCB for a Telit GE863 QUAD PY device shall fulfil the following requirements ANTENNA REQUIREMENTS Frequency range Standard Dual Band GSM DCS frequency range or Standard Quad Band GSM DCS PCS frequenc...

Page 19: ...t the end user has no manual instructions to remove or install the GE863 QUAD PY module Antennas used for this OEM module must not exceed 3dBi gain for mobile and fixed operating configurations 4 2 GS...

Page 20: ...ntenna manufacturer instructions 5 Serial Ports The serial port on the Telit GE863 QUAD PY is the core of the interface between the module and OEM hardware 2 serial ports are available on the module M...

Page 21: ...l VOL 0V 0 35V The signals of the GE863 QUAD PY serial port are RS232 Pin Number Signal GE863 QUAD PY Pad Number Name Usage 1 DCD dcd_uart 42 Data Carrier Detect Output from the GE863 QUAD PY that ind...

Page 22: ...s are referred to the application side therefore on the GE863 QUAD PY side these signal are on the opposite direction TXD on the application side will be connected to the receive line here named TXD r...

Page 23: ...is the level translator from the 0 3V UART level to the RS232 level while the receiver is the translator from RS232 level to 0 3V UART In order to translate the whole set of control lines of the UART...

Page 24: ...uction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 24 of 71 An example of level translation circuitry of this kind is The RS232 s...

Page 25: ...tion 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...

Page 26: ...50mA If VAUX is also used to supply a Camera no additional devices could be connected Pull up resistors can be connected to the VAUX pad provided that the pulled up lines are GE863 QUAD PY input lines...

Page 27: ...ternal audio path should be used for handset function while the external audio path is suited for hands free function car kit Both microphone paths from the Telit GE863 QUAD PY are balanced and the OE...

Page 28: ...n the microphone membrane For example With the internal mic having the suggested nominal sensitivity 45dBVrms Pa at the normal spoken conditions 4 7dB Pa on the microphone membrane At that acoustic pr...

Page 29: ...p can be made for the headset having the microphone on the earpiece cable while the other kind of headset shall be threaten as an handset For example With the external mic having the suggested nominal...

Page 30: ...crophone then keep the lines on the PCB balanced and unbalance the path close to the microphone wire connector if possible For the microphone biasing voltage use a dedicated voltage regulator and a ca...

Page 31: ...tained from a dedicated voltage regulator in order to eliminate the noise present on the power lines This regulator can be the same for all the audio paths The microphone should be supplied from a cap...

Page 32: ...tten authorization All Right reserved Right of modification reserved page 32 of 71 NOTE The microphone sensitivity changes with the value of R2 and R3 Usually the microphones are characterized with 2k...

Page 33: ...ed microphone biasing can be NOTE In the unbalanced application the capacitor C3 shall be 200nF otherwise the frequency response will be cut at low band frequencies down to 300Hz This capacitor can be...

Page 34: ...t is always preferable a balanced mic solution The buffering circuit shall be placed close to the microphone or close to the microphone wire connector 6 4 1 Buffered Balanced Mic A sample circuit can...

Page 35: ...With the mic having nominal sensitivity 45dBVrms Pa at the normal spoken conditions 4 7dB Pa at 7 cm from the mouth of the talker At that acoustic pressure the voltage output from the microphone is Mi...

Page 36: ...roduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 36 of 71 As a consequence the values of the capacitors C636 and C637 shall...

Page 37: ...the biasing the same circuit as seen before can be used to be noticed that the capacitor C3 on the unbalanced biasing circuit is not anymore needed if this Buffered design is used Two different config...

Page 38: ...stics sensitivity 45 dBVrms Pa and you want to use it in the external mic audio path With the mic having nominal sensitivity 45dBVrms Pa at the normal spoken conditions 4 7dB Pa but at 50 cm from the...

Page 39: ...l Right reserved Right of modification reserved page 39 of 71 R711 gain R708 1 5 10 15 k R719 gain 1 R720 1 5 1 10 5 k The commercial values of 15k 5 6k are then chosen As a consequence the values of...

Page 40: ...The internal audio path should be used for handset function while the external audio path is suited for hands free function car kit Both speaker outputs from the Telit GE863 QUAD PY are bridged type a...

Page 41: ...ut power 2 5 mW maximum power output 7 5 mW volume level steps SW 2 dB number of volume steps SW 10 The EVK2 v 1 2 audio output characteristics are internal external ear single ended line coupling AC...

Page 42: ...st two applications need only few mW of power which can be directly drained from the GE863 QUAD PY pads provided a suited speaker is used This direct connect design is the cheaper and simpler solution...

Page 43: ...ution speaker direct connect imposes the speaker characteristics to be almost exactly the suggested ones otherwise the power output may be reduced if speaker impedance is bigger than 16 or the GE863 Q...

Page 44: ...roduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 44 of 71 The resulting gain and high pass cut can be obtained with the form...

Page 45: ...utput requirement is usually at least 4W therefore an amplifier is needed to boost the GE863 QUAD PY output The design of the amplifier shall comply with the following guidelines The input to the ampl...

Page 46: ...f modification reserved page 46 of 71 NOTE The GE863 QUAD PY audio path connected to the car kit hands free amplifier MUST be the external one EAR_HF otherwise the echo cancellation will not be done d...

Page 47: ...all three modes and can be input output alarm output Alternate function GPIO7 supports all three modes and can be input output buzzer output Alternate function All GPIO pads are 2 8V CMOS signals and...

Page 48: ...ither the application and the GE863 QUAD PY during sleep periods drammatically reducing the sleep comsumption to few A In battery powered devices this feature will greatly improve the autonomy of the...

Page 49: ...rovide the interface connection between GE863 QUAD PY and Transchip camera GE863 QUAD PY signal TC5747MF24L Pin Signal I O Notes Pin Signal I O 55 GPIO3 O I2C bus serial clock 1 SCLK I 8 17 GND Ground...

Page 50: ...f 71 n c n c 16 VCLKOUT O n c n c 17 VALIDH O n c n c 18 VALIDV O 31 VAUX O Power Supply 19 DVDD28 I 32 GPIO4 I O I2C bus serial data 20 SDIN I O 8 17 GND Ground 21 PS1 I 6 GPIO8 O Camera power type s...

Page 51: ...PY Hardware User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 51 of 71 Fig 2 C...

Page 52: ...on reserved page 52 of 71 9 1 2 EVB for Transchip camera support In order to interface the Telit GE863 QUAD PY with a CMOS camera Telit has developed an evaluation board The EVK allows the connector o...

Page 53: ...cation reserved page 53 of 71 9 1 3 Block Diagram for supported cameras The numbers on the left side of the Camera s connectors refers to Module Connector s pin number DVDD is VAUX1 power supply from...

Page 54: ...are User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 54 of 71 9 1 4 Schematic...

Page 55: ...A 0 camera quality 0 low 1 medieum 2 high OK AT CAMRES 0 camera resolution 0 VGA 1 QVGA 2 QQVGA OK AT CAMCOL 0 camera color 0 color 1 grayscale OK AT CAMZOOM 0 camera zoom 0 x1 1 x2 2 x4 OK AT CAMTXT...

Page 56: ...are User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 56 of 71 OK AT CAMEN O ca...

Page 57: ...Terminal Equipments Low Voltage Directive 73 23 EEC and product safety Directive 89 336 EEC for conformity for EMC In order to satisfy the essential requisite of the R TTE 99 5 EC directive the GE863...

Page 58: ...ut Telit Communication written authorization All Right reserved Right of modification reserved page 58 of 71 Manufacturers of mobile fixed or portable devices incorporating this module are advised to...

Page 59: ...ltage source and the wiring has to be conforming to the security and fire prevention regulations The product has to be handled with care avoiding any contact with the pins because electrostatic discha...

Page 60: ...nity provides some Directives for the electronic equipments introduced on the market All the relevant information s are available on the European Community website http europa eu int comm enterprise r...

Page 61: ...e 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 61 of 71 Document Change Log Revision...

Page 62: ...GE863 PY Hardware User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 62 of 71 12...

Page 63: ...3 6C 3 7B 4 6E 5 2B 5 2D 5 8C STPS340U SMB U34 D104 1206 4 7 5 R112 0603 0 0 R103 TP102 3 7V 3Fs BC857B SOT 23 Q102 2 3 1 OT102 0603 2 0K 1 R114 1984617PT1 5_2 3 5 H PL107 2 1 GND GND 3 7V 0603 0 0 R...

Page 64: ...1 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 GND RESET 1 9B 4E 3 7V EAR_MT 4 9B ON_OFF 1 9A 9B 0402 0 0 R204 GND 50V 0402 33pF COG C202 EAR_HF 4 11B IIC_SCL_HW 5 5D STAT_LED 9C STAT_LED...

Page 65: ...L 9L 1U 2U 3U 4U 5U 6U 7U 8U 9U LDO_ON_OFF 1 11B 7B 4 6E 5 2B 5 2D 5 8C JP304 GND 10V 0603 220nF X7R C311 10V 0603 220nF X7R C315 GND GND TX_PROG_USB 5 5D 10V 0603 220nF X7R C309 0402 47K 5 R303 C103...

Page 66: ...3 0603 1M 5 R407 0402 2 2K 5 R403 0603 0 0 R410 noMount YES GND GND GND 16V 0603 100nF Y5V C404 GND GND 0603 0 0 R412 noMount YES GND TP404 10V 0402 100nF Y5V C410 EAR_MT 2 3C TP403 JP402 0603 15 5 R4...

Page 67: ...ND GND 0402 18K 5 R538 JP511 GND 0402 470 5 R527 IIC_SDA_HW 2 4B GND 5V_USB JP502 6 3V 0603 2 2uF X5R C515 GND 0402 18K 5 R524 TP502 RX_PROG_USB 3 2C 10V 0402 100nF X5R C503 74AHC1GU04DCKRG4 U504 5 VC...

Page 68: ...63 PY Hardware User guide 1vv0300715 Rev ISSUE 0 21 02 06 Reproduction forbidden without Telit Communication written authorization All Right reserved Right of modification reserved page 68 of 71 13 EV...

Page 69: ...A MON1 CAM_CLK 10D PD 3 5A PD 6 5A VCC_MAIN_CAM CAM_SDA IIC_SDA 6B 9B 4773540103470 SO109 2 1 3 TP102 25V 0402 15nF X7R C105 25V 0402 15nF X7R noMount YES C111 TGPIO_08 CAM_ON 5D 0402 0 0 R109 noMount...

Page 70: ...RA cs1170 Drawn by Pasqualini Natascia A3 Project 0276 SHEET N 1 OF SHEETS 2 DRAWING CODE CS1170 SM 06 09 2005 ANNOTATION Silkscreen side A TUTTI I DIRITTI RISERVATI RIPRODUZIONE E DIVULGAZIONE VIETAT...

Page 71: ...RA cs1170 Drawn by Pasqualini Natascia A3 Project 0276 SHEET N 2 OF SHEETS 2 DRAWING CODE CS1170 SM 06 09 2005 ANNOTATION Silkscreen side B TUTTI I DIRITTI RISERVATI RIPRODUZIONE E DIVULGAZIONE VIETAT...

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