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wm_ Q2686 wireless cpu ? product technical specification revision: 007 date: march 2007
confidential ? page: 1 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 Q2686 wireless cpu ? product technical specification reference: wm_prj_Q2686_pts_001 revision: 007 date: march 6, 2007 supports open at ? embedded ansi c applications
Q2686 wireless cpu ? confidential ? page: 2 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 document history level date list of revisions 001 01/17/2005 creation (preliminary version) 002 06/01/2005 pin-out modification (see chapter 3.1) 003 15/09/2005 update functional architecture pin-out modification (see chapter 4.1) add reset state of all ios of all interfaces update power supply range (see chapter 3.2) update electrical information for digital io (see chapter 3.2) update spi bus configuration (see chapter 3.4) remove 3 gpio (see chapter 3.9) change mic1 biasing voltage configuration (see chapter 3.11) change spk1 definition to only single-ended (see chapter 3.11) update on/?ff operating sequence (see chapter 3.14) update boot definition (see chapter 3.15) update ~reset operating sequence and electrical characteristics (see chapter 3.14) update interrupt activation (see chapter 3.17) update rtc electrical charac teristics (see chapter 3.19) update pcm description and add waveform (see chapter 3.21) 004 november 22, 2005 update Q2686 version ?overview? section update ?cautions?, ?trademarks? and ?copyright? update ?electrical information for digital i/o? (see chapter 3.3) update spi max frequency (see chapter 3.4) update available gpio (see chapter 3.9) add ?off state? voltage caution (see chapter 3.2) update ?battery charging interface? (see chapter 3.13) update ?analog audio interface? (see chapter 3.11) update ?environmental specifications? (see chapter 4.2) update ?general purpose connector pin-out description? (see chapter 4.1) 005 february 2006 update ?pcm interface? waveform (see chapter 3.21) update ?electrical information for digital io? absolute maximum rating (see chapter 3.3) update ?general purpose connector? (see chapter 3.1) update ?spi bus? speed (see chapter 3.4.1) update ?i2c bus? (see chapter 3.4.2) update ?main serial link uart 1? maximum speed (see chapter 3.6) update ?auxiliary serial link uart 2? maximum speed (see chapter 3.7) update ?sim? general description (see chapter 3.8.1) update ?usb 2.0 interface? features (see chapter 3.22) update ?operating system upgrade? (see chapter 6.3) update ?general purpose input/output? signals description (see chapter 3.9) update ?general purpose connector pin-out description? signal description (see chapter 4.1) update ?battery charging interface? (see chapter 3.13) update ?analog to digital converter? (see chapter 3.10) update ?flash-led signal? (see chapter 3.20)
Q2686 wireless cpu ? confidential ? page: 3 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 level date list of revisions update ?analog audio interface? (see chapter 3.11) 006 march 2006 update ?power consumption? (see chapter 3.3.2) update ?on/~off signal? (see chapter 3.14) update ?bat-rtc? (see chapter 3.19) update ?electrical information for digital io? absolute maximum rating (see chapter 3.3) update ?buzzer output?, remove pwm features ( see chapter 3.12 ) update ?emc recommendation? add esd recommendations (see chapter 6.1.1 ) update ?spi bus? add waveforms ( see chapter 3.4.1 ) update ?i2c bus? add waveforms ( see chapter 3.4.2 ) update ?analog to digital converter? sampling rate (see chapter 3.10) 007 march 2007 modification of the on/ ~off paragraph add atex 94/9/ce directive information in section 4.3 update reference documents update section 3.6 ?main serial link (uart1)? other minor corrections
Q2686 wireless cpu ? confidential ? page: 4 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 overview this document defines and specifies the Q2686 wireless cpu ? , available in a gsm/gprs class 10 quad-band version: ? Q2686 : egsm/gprs 900/1800/850/1900 mhz version with 32 mb of bursted flash memory and 8 mb of sram ( 32/8 ). the Q2686 wireless cpu ?? supports a powerful open software platform (open at ? ). open at ? is the world?s most comprehensive cellular development environment, which allows embedded standard ansi c applications to be natively executed directly on the wireless cpu ? . this product specification document covers the wireless cpu ? alone and does not include the programmable capabiliti es provided via the use of open at ? software suites. for detailed software programming guides , refer to the documents shown in the ? references? section.
Q2686 wireless cpu ? confidential ? page: 5 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 cautions this platform contains a modular transmi tter. this device is used for wireless applications. note that a ll electronics parts and elem ents are esd sensitive. information provided herein by wavecom is accurate and reliable. however, no responsibility is assumed for its use an d any of such wavecom information is herein provided ?as is? without any war ranty of any kind, whether express or implied. trademarks ?, wavecom ? , wireless cpu ? , open at ? and certain other trademarks and logos appearing on this document, are filed or registered trademarks of wavecom s.a. in france or in other co untries. all other company and/or product names mentioned may be filed or registered trademarks of their respective owners. copyright this manual is copyrighted by wavecom with all rights reserved. no part of this manual may be reproduced in any form without the prior written permission of wavecom. no patent liability is a ssumed with respect to the use of their respective owners.
Q2686 wireless cpu ? confidential ? page: 6 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 web site support general information about wavecom and its range of products: www.wavecom.com specific support about the Q2686 wireless cpu ? : www.wavecom.com/Q2686 carrier/operator approvals: www.wavecom.com/approvals open at ? introduction: www.wavecom.com/openat developer support for software and hardware: www.wavecom.com/forum
Q2686 wireless cpu ? confidential ? page: 7 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 contents 1 references ................................................................................ 12 1.1 reference do cuments ........................................................................... 12 1.1.1 open at ? software documentation............................................... 12 1.1.2 at software documentation ......................................................... 12 1.1.3 hardware documents ................................................................... 12 1.1.4 other wavecom documents ......................................................... 12 1.1.5 general referenc e documents ...................................................... 12 1.2 list of abbreviations ............................................................................. 13 2 general description .................................................................. 16 2.1 general information .............................................................................. 16 2.1.1 overall dimensions ....................................................................... 16 2.1.2 environment and mechanics......................................................... 16 2.1.3 gsm/gprs features ..................................................................... 16 2.1.4 interfaces ...................................................................................... 16 2.1.5 operating system ......................................................................... 17 2.1.6 connection interfaces ................................................................... 17 2.2 functional architecture......................................................................... 18 2.2.1 rf functionalities ......................................................................... 19 2.2.2 baseband functionalities .............................................................. 19 2.3 operating system ................................................................................. 19 3 interfaces ................................................................................. 20 3.1 general purpose connector (gpc)......................................................... 20 3.2 power supply ....................................................................................... 21 3.2.1 power supply description ............................................................. 21 3.2.2 power consumption ..................................................................... 22 3.2.2.1 power consumption without open at ? processing ................ 23 3.2.2.2 power consumption with open at ? software ........................ 24 3.2.2.3 consumption waveform samples ........................................... 25 3.2.2.3.1 connected mode cu rrent waveform ..................................... 25 3.2.2.3.2 slow idle mode current waveform ....................................... 26 3.2.2.3.3 fast idle mode current waveform......................................... 26 3.2.2.3.4 transfer mode class 10 current waveform........................... 27 3.2.2.4 power supply pin-out ............................................................. 27 3.3 electrical informatio n for digital i/o....................................................... 28 3.4 serial interface...................................................................................... 30 3.4.1 spi bus ......................................................................................... 30 3.4.1.1 spi waveforms ....................................................................... 30 3.4.1.2 spi config uration .................................................................... 31 3.4.1.3 spi1 bus ................................................................................. 31
Q2686 wireless cpu ? confidential ? page: 8 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.4.1.4 spi2 bus ................................................................................. 31 3.4.2 i2c bus ......................................................................................... 32 3.4.2.1 i2c waveforms ........................................................................ 32 3.4.2.2 i2c bus pin-out ....................................................................... 33 3.5 keyboard interface ................................................................................ 34 3.6 main serial li nk (uart1) ...................................................................... 35 3.7 auxiliary serial link (uart2) ................................................................ 37 3.8 sim interface ........................................................................................ 38 3.8.1 general description....................................................................... 38 3.9 general purpose input/output .............................................................. 40 3.10 analog to digital converter ................................................................... 42 3.11 analog audio interface ......................................................................... 43 3.11.1 microphone inputs........................................................................ 43 3.11.1.1 common microphone input characteristics ............................ 43 3.11.1.2 main microphone inputs (mic2) ............................................. 43 3.11.1.3 auxiliary microphone inputs (mic1)........................................ 44 3.11.1.4 microphone electrical characteristics...................................... 44 3.11.2 common speaker output characteristics ...................................... 45 3.11.2.1 differential connection ............................................................ 45 3.11.2.2 single-ended connection ........................................................ 45 3.11.3 speaker outputs ........................................................................... 45 3.11.3.1 speaker 2 outputs .................................................................. 45 3.11.3.2 speaker 1 outputs .................................................................. 46 3.11.3.3 speaker power output ............................................................ 46 3.12 buzzer output ...................................................................................... 47 3.13 battery charging interface .................................................................... 48 3.13.1 ni-cd / ni-mh charging algorithm ................................................ 48 3.13.2 li-ion charging algorithm ............................................................. 49 3.13.3 controlled pre-charging hardware ................................................ 50 3.13.4 temperature monitoring ............................................................... 50 3.14 on / ~off signal .................................................................................. 51 3.14.1 operating sequences .................................................................... 51 3.14.1.1 power-on ............................................................................... 51 3.14.1.2 power-off.............................................................................. 54 3.15 boot signal ......................................................................................... 55 3.16 reset signal (~re set) .......................................................................... 56 3.17 external interrupt.................................................................................. 58 3.18 vcc_2v8 and vc c_1v8 output ............................................................. 59 3.19 bat-rtc (backup battery).................................................................... 60 3.19.1 interface description ..................................................................... 60 3.20 flash-led signal ................................................................................ 61 3.21 digital audio interface (pcm)................................................................ 63 3.21.1 description ................................................................................... 63 3.22 usb 2.0 interface.................................................................................. 66
Q2686 wireless cpu ? confidential ? page: 9 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.23 rf interface .......................................................................................... 67 3.23.1 rf connections............................................................................. 67 3.23.2 rf performance ............................................................................ 67 3.23.3 antenna specifications ................................................................. 68 4 technical specifications ........................................................... 69 4.1 general purpose connector pin-out description.................................... 69 4.2 environmental specifications ................................................................ 72 4.3 conformance with atex 94/9/ce directive ............................................ 73 4.4 mechanical sp ecifications..................................................................... 73 4.4.1 physical characteristics ................................................................ 73 4.4.2 mechanical drawings ................................................................... 73 5 connector and peripheral device references............................ 75 5.1 general purpose connector .................................................................. 75 5.2 sim card reader .................................................................................. 75 5.3 microphone .......................................................................................... 75 5.4 speaker ................................................................................................ 76 5.5 antenna cable ...................................................................................... 76 5.6 rf board-to-board connector ............................................................... 76 5.7 gsm antenna ....................................................................................... 76 6 design guidelines ..................................................................... 77 6.1 hardware and rf.............................................................................. 77 6.1.1 emc recommendations................................................................ 77 6.1.2 power supply ............................................................................... 78 6.1.3 layout requirement ...................................................................... 79 6.1.4 antenna ........................................................................................ 80 6.2 mechanical integration ......................................................................... 80 6.3 operating system upgrade................................................................... 80 7 appendix................................................................................... 81 7.1 standards and recommendations ........................................................ 81 7.2 safety recommendations (f or information only).................................... 85 7.2.1 rf safety ...................................................................................... 85 7.2.1.1 general ................................................................................... 85 7.2.1.2 exposure to rf energy ............................................................ 85 7.2.1.3 efficient terminal operation .................................................... 85 7.2.1.4 antenna care and replacement .............................................. 86 7.2.2 general safety............................................................................... 86 7.2.2.1 driving .................................................................................... 86 7.2.2.2 electronic devices ................................................................... 86 7.2.2.3 vehicle electronic equipment .................................................. 86
Q2686 wireless cpu ? confidential ? page: 10 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 7.2.2.4 medical electronic equipment ................................................. 86 7.2.2.5 aircraft.................................................................................... 87 7.2.2.6 children .................................................................................. 87 7.2.2.7 blasting areas......................................................................... 87 7.2.2.8 potentially explosive atmospheres.......................................... 87
Q2686 wireless cpu ? confidential ? page: 11 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 table of figures figure 1: function al architecture .................................................................... 18 figure 2: power supply during burst emission................................................ 21 figure 3: spi timing diagrams, mode 0, master, 4 wires ............................... 30 figure 4: i2c timing diagrams, master ........................................................... 32 figure 5: ni-cd / ni-mh charging waveform ................................................... 48 figure 6: li-ion fu ll-charging waveform .......................................................... 49 figure 7: power-on sequence (no pin code activated) ................................... 52 figure 8: powe r-off sequence ....................................................................... 54 figure 9: reset sequence waveform ............................................................... 56 figure 10: real time clock power supply ....................................................... 60 figure 11: flash-led state during reset and initialization time................... 62 figure 12: pcm frame waveform .................................................................... 64 figure 13: pcm sampling waveform............................................................... 64 figure 14: enviro nmental classes ................................................................... 72 figure 15: mech anical drawing ...................................................................... 74 figure 16: layout requirement........................................................................ 79
Q2686 wireless cpu ? references confidential ? page: 12 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 1 references 1.1 reference documents for more details, several reference documents may be consulted. the wavecom reference documents are pr ovided in the wavecom document package, contrary to the general refe rence documents which are not authored by wavecom. please check the web site for the latest documentation availabl e. note that the current software versions avai lable for Q2686 are v4.12 for open at ? software and 6.61 for open at ? firmware. 1.1.1 open at ? software documentation [1] getting started with open at ? [2] tutorial for open at ? [3] tools manual for open at ? [4] basic development guide for open at ? [5] adl user guide for open at ? [6] open at ? release note 1.1.2 at software documentation [7] at commands interface guide [8] at commands interfac e guide (bluetooth) [9] open at ? firmware release note 1.1.3 hardware documents [10] wireless cpu ? quik Q2686 customer design guidelin es (ref. wm_prj_Q2686_pts_003) [11] wireless cpu ? quik Q2686 process customer guidel ines (ref.wm_prj_Q2686_pts_004) 1.1.4 other wavecom documents [12] automotive environmental cont rol plan for wireless cpu ? quik Q2686 (ref. wm_t&d_Q2686_dcp_001) 1.1.5 general reference documents [13] ?i2c bus specification?, version 2. 0, philips semiconductor 1998 [14] iso 7816-3 standard
Q2686 wireless cpu ? references confidential ? page: 13 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 1.2 list of abbreviations abbreviation definition ac a lternating c urrent adc a nalog to d igital c onverter a/d a nalog to d igital conversion af a udio- f requency at at tention (prefix for modem commands) aux aux iliary can c ontroller a rea n etwork cb c ell b roadcast cep c ircular e rror p robable clk cl oc k cmos c omplementary m etal o xide s emiconductor cs c oding s cheme cts c lear t o s end dac d igital to analog c onverter db d eci b el dc d irect c urrent dcd d ata c arrier d etect dce d ata c ommunication e quipment dcs d igital c ellular s ystem dr d ynamic r ange dsr d ata set r eady dte d ata t erminal e quipment dtr d ata t erminal r eady efr e nhanced f ull r ate e-gsm e xtended gsm emc e lectro m agnetic c ompatibility emi e lectro m agnetic i nterference ems e nhanced m essage s ervice en en able esd e lectro s tatic d ischarges fifo f irst i n first o ut fr f ull r ate
Q2686 wireless cpu ? references confidential ? page: 14 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 abbreviation definition fta f ull t ype a pproval gnd g rou nd gpi g eneral p urpose i nput gpc general purpose connector gpio g eneral p urpose i nput o utput gpo g eneral p urpose o utput gprs g eneral p acket r adio s ervice gps g lobal p ositioning s ystem gsm g lobal s ystem for m obile communications hr h alf r ate i/o i nput / o utput led l ight e mitting d iode lna l ow n oise a mplifier max max imum mic mic rophone min min imum mms m ultimedia m essage s ervice mo m obile o riginated mt m obile t erminated na n ot a pplicable nf n oise f actor nmea n ational m arine e lectronics a ssociation nom nom inal ntc n egative t emperature c oefficient pa p ower a mplifier pa pa scal (for speaker sound pressure measurements) pbcch p acket b roadcast c ontrol ch annel pc p ersonal c omputer pcb p rinted c ircuit b oard pda p ersonal d igital a ssistant pfm p ower f requency m odulation psm p hase s hift m odulation pwm p ulse w idth m odulation ram r andom a ccess m emory rf r adio f requency
Q2686 wireless cpu ? references confidential ? page: 15 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 abbreviation definition rfi r adio f requency i nterference rhcp r ight h and c ircular p olarization ri r ing i ndicator rst r e s e t rtc r eal time c lock rtcm r adio t echnical c ommission for m aritime services rts r equest t o s end rx r eceive scl serial clock sda serial data sim s ubscriber i dentification wireless cpu ? sms s hort m essage s ervice spi s erial p eripheral i nterface spl s ound p ressure l evel spk sp ea k er sram s tatic ram tbc t o b e c onfirmed tdma t ime d ivision m ultiple a ccess tp t est p oint tvs t ransient v oltage s uppressor tx t ransmit typ typ ical uart u niversal a synchronous r eceiver- t ransmitter usb u niversal s erial b us ussd u nstructured s upplementary s ervices d ata vswr v oltage s tanding w ave r atio
Q2686 wireless cpu ? general description confidential ? page: 16 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 2 general description 2.1 general information the Q2686 series is a self-contained e-gsm/gprs 900/1800 and 850/1900 quad-band wireless cpu ? with the following characteristics: 2.1.1 overall dimensions ? length: 40 mm ? width: 32.2 mm ? thickness: 4 mm 2.1.2 environment and mechanics ? green policy: rohs compliant ? complete shielding the Q2686 wireless cpu ? is compliant with rohs (restriction of hazardous substances in electrical and electronic equi pment) directive 2002/95/ec which sets limits for the use of certain restricted hazardous substances. this directive states that ?from 1st july 2006, new electrical and electronic equipment pu t on the market does not contain lead, mercury, cadmium, hexavalent chromium, po lybrominated biphenyls (pbb), and polybrominated diphenyl ethers (pbde)?. the wireless cpu ? s which are compliant with this directive are identified by th e rohs logo on their label. 2.1.3 gsm/gprs features ? 2-watt egsm 900/gsm 850 radio section running under 3.6 volts ? 1-watt gsm1800/1900 radio section running under 3.6 volts ? hardware gprs class 10 capable 2.1.4 interfaces ? digital section running under 2.8 volts and 1.8v. ? 3v/1v8 sim interface ? complete interfacing: o power supply o serial link o analog audio o pcm digital audio o sim card o keyboard o usb 2.0 slave o serial lcd (not availa ble with at commands)
Q2686 wireless cpu ? general description confidential ? page: 17 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 2.1.5 operating system ? real time clock (rtc) with calendar ? battery charger ? echo cancellation + noise reduction (quadri codec) ? full gsm or gsm/gprs operating system stack 2.1.6 connection interfaces the Q2686 wireless cpu ? has four external connections: ? three for rf circuit: o ufl connector o soldered connection o imp connection ? one for baseband signals: o 100 pin i/o connector.
Q2686 wireless cpu ? general description confidential ? page: 18 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 2.2 functional architecture the global architecture of the Q2686 wireless cpu ? is described below: audio power uart2 pcm uart1 usb sim 1.8v/3v ebi dac a dc gpio spi1 i2c spi2 ext _ it rf interface supply interface audio filter memory flash / sram rf front end rf transceiver coax ufl imp antenna q 2 6 8 6 b o a r d t o b o a r d i n t e r f a c e c o n n e c t o r charger rtc usb detection keypad figure 1: functional architecture
Q2686 wireless cpu ? general description confidential ? page: 19 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 2.2.1 rf functionalities the radio frequency (rf) range compli es with the phase ii egsm 900/dcs 1800 and gsm 850/pcs 1900 recommendations. the frequencies are: transmit band (tx) receive band (rx) gsm 850 824 to 849 mhz 869 to 894 mhz e-gsm 900 880 to 915 mhz 925 to 960 mhz dcs 1800 1710 to 1785 mhz 1805 to 1880 mhz pcs 1900 1850 to 1910 mhz 1930 to 1990 mhz the radio frequency (rf) part is based on a specific quad-band chip with a: ? digital low-if receiver ? quad-band lna (low noise amplifier) ? offset pll (phase locked loop) transmitter ? frequency synthesizer ? digitally controlled crystal oscillator (dcxo) ? tx/rx fem ( front-end wireless cpu ? ) for quad-band gsm/gprs 2.2.2 baseband functionalities the digital part of the Q2686 wireless cpu ? is composed of a pcf5212 philips chip. this chipset uses a 0.18 ? m cmos mixed technology, which allows massive integration as we ll as low current consumption. 2.3 operating system the Q2686 wireless cpu ? is designed to integrate various types of specific process applications such as vertical applications (telemetry, multimedia, automotive). the operating system offers a set of at commands to control the wireless cpu ? . with this standard operating system , some interfaces of the wireless cpu ? are not available, since they are dependent on the peripheral devices connected to the wireless cpu ? . the operating system is open at ? compliant.
Q2686 wireless cpu ? interfaces confidential ? page: 20 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3 interfaces 3.1 general purpose connector (gpc) a 100-pin connector is provided to interface the q2 686 wireless cpu ? with a board containing either a serial lcd wireless cpu ? , a keyboard, a sim connector, or a battery connection. the available interfaces on the gpc are described below: chapter name driven by os 6.60 not driven by os 6.60 driven by open at ? v4.00 not driven by open at ? v4.00 3.4 serial interface x x 3.5 keyboard interface x x 3.6 main serial link x x 3.7 auxiliary serial link x x 3.8 sim interface x x 3.9 general purpose io x x 3.10 analog to digital converter x x 3.11 analog audio interface x x 3.12 buzzer output x x 3.13 battery charging interface x x 3.17 external interruption x x 3.18 vcc_2v8 and vcc_1v8 x x 3.19 bat-rtc (backup battery) x x 3.20 flash-led signal x x 3.21 digital audio interface (pcm) x x 3.22 usb 2.0 interface x x
Q2686 wireless cpu ? interfaces confidential ? page: 21 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2 power supply 3.2.1 power supply description the power supply is one of the key issues in the design of a gsm terminal. due to the burst emission mode used in gsm/gprs, the po wer supply must be able to deliver high current peaks in a short time. during the peaks, the ripple (u ripp ) on the supply voltage must no t exceed a certain limit (see table 1 power supply voltage ?power supply voltage?). ? in communication mode, a gsm/gp rs class 2 terminal emits 577 ? s radio bursts every 4.615ms (see figure 2). uripp vbatt t uripp t = 4,615 ms t = 577 ? s figure 2: power supply during burst emission ? in communication mode, a gprs class 10 terminal emits 1154 ? s radio bursts every 4.615ms. only the vbatt power supply input is necessary to provide the Q2686 wireless cpu ? . vbatt : ? directly supplies the rf components with 3.6 v. it is essential to keep a minimum voltage ripple at this conn ection in order to avoid any phase error. the rf power amplifier current ( 1.5 a peak in gsm /gprs mode) flows with a ratio of: o 1/8 of the time (around 577 ? s every 4.615ms for gsm /gprs cl. 2) and o 2/8 of the time (around 1154 ? s every 4.615ms for gsm /gprs cl. 10). the rising time is around 10 ? s. ? is internally used to provide, vi a several regulators, the vcc_2v8 and vcc_1v8 power supply required for the baseband signals. the Q2686 wireless cpu ? shielding case is the gr ounding. the ground must be connected to the motherboard through a complete layer on the pcb.
Q2686 wireless cpu ? interfaces confidential ? page: 22 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 input power supply voltage v min v nom v max vbatt 1,2 3.2 3.6 4.8 table 1 power supply voltage (1): this value must be guarantied during the burst (with 1.5a peak in gsm or gprs mode) (2): max operating voltage stationary wave ratio (vswr) 2:1 when the wireless cpu ? is supplied with a battery, the total impedance (battery + protections + pcb) should be < 150 m ? . as the radio power amplifier is directly connected to vbatt, the wireless cpu ? is sensitive to any alternative current on lines. when a dc/dc converter is used, wavecom recommends setting the converter frequency in such a way that the resulting voltage does not exceed the values in following table. freq. (khz) u ripp max (mvpp) <10 300 10 d f d 200 40 > 200 10 table 2 maximum voltage ripple (uripp) vs frequency when the wireless cpu ? is in alarm mode, no voltage must be applied on any pin of the 100-pin connector, except on bat-rtc (pin 7) for rtc operation or on/~off (pin 19) to power-on the wireless cpu ? . 3.2.2 power consumption power consumption is dependent on the configuration used. it is for this reason that the following consumption values are given for each mode, rf band and type of software used (at or open at?). all the following information is given assuming a 50 : rf output. the following consumption values were obtained by performing measurements on the wireless cpu ? samples at a temperature of 25 c. three vbatt values are used to measure the consumption, vbatt min (3.2v), vbatt max (4.8v) and vbatt typ (3.6v). the average current is given for the th ree vbatt values and the peak current given is the maximum current peak meas ured with the three vbatt voltages. for a more detailed description of the op erating modes, see the appendix of the at command interface guide os 6.60 [7]. for more information on the consumpt ion measurement procedure, see Q2686 wireless cpu ? customer design guidelines [10].
Q2686 wireless cpu ? interfaces confidential ? page: 23 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2.2.1 power consumption without open at ? processing the following measurement results are relevant when: ? there is no open at ? application ? open at ? application is disabled ? no processing is required by the open at ? application power consumption without open at ? processing operating mode parameters i min average vbatt=4,8v i nom average vbatt=3,6v i max average vbatt=3,2v i max peak unit alarm mode 21 16 15 a paging 9 (rx burst occurrence ~2s) 15 17 18 160 rx ma fast idle mode paging 2 (rx burst occurrence ~0,5s) 17 18 19 160 rx ma paging 9 (rx burst occurrence ~2s) 1.5 (1.5 to 1.75) 1.6 (1.6 to 1.9) 1.7 (1.7 to 2.05) 160 rx ma slow idle mode 1 paging 2 (rx burst occurrence ~0,5s) 4 (4 to 4.3) 4.4 (4.4 to 4.75) 4.6 (4.6 to 4.95) 160 rx ma fast standby mode 30 36 39 ma slow standby mode 1.4 1.4 1.5 ma pcl5 (tx power 33dbm) 210 218 222 1450 tx ma 850/900 mhz pcl19 (tx power 6dbm) 81 89 92 270 tx ma pcl0 (tx power 33dbm) 145 153 157 850 tx ma connected mode 1800/1900 mhz pcl19 (tx power 6dbm) 77 85 88 250 tx ma pcl3 (tx power 33dbm) 201 209 213 1450 tx ma 850/900 mhz pcl17 (tx power 5dbm) 78 85 88 270 tx ma pcl3 (tx power 30dbm) 138 146 149 850 tx ma transfer mode class 8 (4rx/1tx) 1800/1900 mhz pcl18 (tx power 0dbm) 74 81 84 250 tx ma pcl3 (tx power 33dbm) 364 372 378 1450 tx ma 850/900 mhz pcl17 (tx power 5dbm) 112 120 123 270 tx ma pcl3 (tx power 30dbm) 237 245 248 850 tx ma transfer mode class 10 (3rx/2tx) 1800/1900 mhz pcl18 (tx power 0dbm) 104 111 115 250 tx ma tx means that the current peak is the rf transmission burst (tx burst) rx means that the current peak is the rf reception burst (rx burst) 1 slow idle mode consumption is dependent on the sim ca rd used. some sim cards respond faster than others, the longer the response time, the higher the consumption. the measurements were performed with a large number of 3v sim cards, the results in brackets are the minimum and maximum currents measured from among all the sims used .
Q2686 wireless cpu ? interfaces confidential ? page: 24 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2.2.2 power consumption with open at ? software the open at? software used is the dh rystone application, the following consumption results are measured during the run of the dhrystone application. power consumption with dhrystone open at ? application operating mode parameters i min average vbatt=4,8v i nom average vbatt=3,6v i max average vbatt=3,2v i max peak unit alarm mode n/a n/a n/a a paging 9 (rx burst occurrence ~2s) 31 38 41 160 rx ma fast idle mode paging 2 (rx burst occurrence ~0,5s) 32 39 42 160 rx ma paging 9 (rx burst occurrence ~2s) n/a n/a n/a 160 rx ma slow idle mode paging 2 (rx burst occurrence ~0,5s) n/a n/a n/a 160 rx ma fast standby mode 31 38 41 ma slow standby mode n/a n/a n/a ma pcl5 (tx power 33dbm) 211 219 223 1450 tx ma 850/900 mhz pcl19 (tx power 6dbm) 82 90 93 270 tx ma pcl0 (tx power 33dbm) 146 154 159 850 tx ma connected mode 1800/1900 mhz pcl19 (tx power 6dbm) 78 85 89 250 tx ma pcl3 (tx power 33dbm) 202 210 214 1450 tx ma 850/900 mhz pcl17 (tx power 5dbm) 78 86 89 270 tx ma pcl3 (tx power 30dbm) 140 148 151 850 tx ma transfer mode class 8 (4rx/1tx) 1800/1900 mhz pcl18 (tx power 0dbm) 75 82 85 250 tx ma pcl3 (tx power 33dbm) 365 373 379 1450 tx ma 850/900 mhz pcl17 (tx power 5dbm) 113 121 125 270 tx ma pcl3 (tx power 30dbm) 239 247 250 850 tx ma transfer mode class 10 (3rx/2tx) 1800/1900 mhz pcl18 (tx power 0dbm) 105 113 117 250 tx ma tx means that the current peak is the rf transmission burst (tx burst) rx means that the current peak is the rf reception burst (rx burst)
Q2686 wireless cpu ? interfaces confidential ? page: 25 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2.2.3 consumption waveform samples the consumption waveforms are given for a egsm900 network configuration with at software running on the Q2686/x60 wireless cpu ? . the vbatt voltage is at the typical value of 3.6v. four significant operating mode co nsumption waveforms are described: ? connected mode (pcl5: tx power 33dbm) ? slow idle mode (paging 9) ? fast idle mode (paging 9) ? transfer mode (gprs class 10, pcl3: tx power 33dbm ) the following waveform shows only the fo rm of the current, for correct current values, see sections 3.2.2.1 and 3.2.2.2. 3.2.2.3.1 connected mode current waveform connected mode 33dbm current(a) / time (s) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0 0 . 0 0 2 0 . 0 0 4 0 . 0 0 6 0 . 0 0 8 0 . 0 1 0 . 0 1 2 0 . 0 1 4 tx peak
Q2686 wireless cpu ? interfaces confidential ? page: 26 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2.2.3.2 slow idle mode current waveform slow idle mode paging ~2s current(a) / time (s) -0.02 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0 1 2 3 4 5 6 7 3.2.2.3.3 fast idle mode current waveform fast idle mode paging ~2s current(a) / time (s) 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0 1 2 3 4 5 6 7 rx peak rx peak
Q2686 wireless cpu ? interfaces confidential ? page: 27 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.2.2.3.4 transfer mode class 10 current waveform transfer mode class 10 33dbm current(a) / time (s) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0 0 . 0 0 2 0 . 0 0 4 0 . 0 0 6 0 . 0 0 8 0 . 0 1 0 . 0 1 2 0 . 0 1 4 3.2.2.4 power supply pin-out power supply pin-out signal pin number vbatt 1,2,3,4 gnd shielding the grounding connection is made through the shielding ? the four leads must be soldered to the ground plane. tx peak
Q2686 wireless cpu ? interfaces confidential ? page: 28 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.3 electrical information for digital i/o the three types of digital i/o on the Q2686 wireless cpu ? are: 2.8volt cmos, 1.8volt cmos and open drain. the three types are described below: electrical characteri stics of digital i/o 2.8 volt type (2v8 ) parameter i/o type minim. typ maxim. condition internal 2.8v power supply vcc_2v8 2.74v 2.8v 2.86v v il cmos -0.5v* 0.84v v ih cmos 1.96v 3.2v* v ol cmos 0.4v i ol = - 4 ma v oh cmos 2.4v i oh = 4 ma i oh 4ma input / output pin i ol - 4ma *absolute maximum ratings all 2.8v i/o pins do not accept in put signal voltage above the maximum voltage specified above, except for the uart1 interfac e, which is 3.3v tolerant . 1.8 volt type (1v8) parameter i/o type minim. typ maxim. condition internal 1v8 power supply vcc_1v8 1.76v 1.8v 1.94v v il cmos -0.5v* 0.54v v ih cmos 1.33v 2.2v* v ol cmos 0.4v i ol = - 4 ma v oh cmos 1.4v i oh = 4 ma i oh 4ma input / output pin i ol - 4ma *absolute maximum ratings
Q2686 wireless cpu ? interfaces confidential ? page: 29 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 open drain output type signal name parameter i/o type minimum typ maximum condition v ol open drain 0.4v flash-led i ol open drain 8ma v ol open drain 0.4v buzz-out i ol open drain 100ma v tol open drain 3.3v tolerated voltage v ih open drain 2v v il open drain 0.8v v ol open drain 0.4v sda / gpio27 and scl / gpio26 i ol open drain 3ma the reset states of the i/os are given in each interface description chapter. definitions of these states are given below: reset state definition parameter definition 0 set to gnd 1 set to supply 1v8 or 2v8 depending on i/o type pull-down internal pull-down with ~60k resistor. pull-up internal pull-up with ~60k resistor to supply 1v8 or 2v8 depending on i/o type. z high impedance undefined caution: undefined must not be used in your application if a special state is required at reset. these pins may be a toggling signal during reset.
Q2686 wireless cpu ? interfaces confidential ? page: 30 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.4 serial interface the Q2686 wireless cpu ? may be connected to an lcd module driver through either two spi bus or an i2c 2-wire interface. 3.4.1 spi bus both spi bus interfaces includes: ? a clk signal ? an i/o signal ? an i signal ? a cs signal complying with the standard spi bus. spi bus characteristics: ? master mode operation ? spi speed is from 101.5 kbit/s to 13 mbit/s in master mode operation ? 3 or 4-wire interface ? spi-mode configuration: 0 to 3 ? 1 to 16 bits data length 3.4.1.1 spi waveforms waveform for spi transfer with 4-wire configuration in master mode 0 (chip select is not represented). data- outdelay clk-cycle data- in-hold data- in-setup spix-io data valid data valid spix-clk spix-i figure 3: spi timing diagrams, mode 0, master, 4 wires
Q2686 wireless cpu ? interfaces confidential ? page: 31 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 ac characteristics signal description minimum typ maximum unit clk-cycle spi clock frequency 0.1015 13 mhz data-out delay data out ready delay time 10 ns data-in-setup data in setup time 2 ns data-out-hold data out hold time 2 ns 3.4.1.2 spi configuration operation maximum speed spi- mode duplex 3-wire type 4-wire type master 13 mb/s 0,1,2,3 half spix-clk; spix- io; ~spix-cs spix-clk; spix-io; spix-i; ~spix-cs for the 4-wire configuration, spix-i/o is used as output only, spix-i is used as input only. for the 3-wire configuration, spix-i/o is used as input and output. 3.4.1.3 spi1 bus pin description signal pin number i/o i/o type reset state description multiplexed with spi1-clk 23 o 2v8 z spi serial clock gpio28 spi1-io 25 i/o 2v8 z spi serial input/output gpio29 spi1-i 24 i 2v8 z spi serial input gpio30 ~spi1-cs 22 o 2v8 z spi enable gpio31 for open drain, 2v8 and 1v8 voltage characterist ics and reset state definition, refer to chapter 3.3, "electrical information for digital i/o". 3.4.1.4 spi2 bus pin description signal pin number i/o i/o type reset state description multiplexed with spi2-clk 26 o 2v8 z spi serial clock gpio32 spi2-io 27 i/o 2v8 z spi serial input/output gpio33 sp2-i 29 i 2v8 z spi serial input gpio34 ~spi2-cs 28 o 2v8 z spi enable gpio35 see chapter 3.3 ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 32 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.4.2 i2c bus the i2c interface includes a clock signal (scl) and da ta signal (sda) complying with a 100kbit/s-standard interf ace (standard mode: s-mode). the i2c bus is always master. the maximum speed transfer range is 400kbit/s (fast mode: f-mode). for more information on th e bus, see the ?i2c bus sp ecification version 2.0? from philips [13]. 3.4.2.1 i2c waveforms i2c bus waveform in master mode configuration: data valid scl sda data valid t- free t- start t- high t- data- setup t- data- hold t- stop scl - freq figure 4: i2c timing diagrams, master
Q2686 wireless cpu ? interfaces confidential ? page: 33 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 ac characteristics signal description minimum typ maximum unit scl-freq i2c clock frequency 100 400 khz t-start hold time start condition 0.6 s t-stop setup time stop condition 0.6 s t-free bus free time, stop to start 1.3 s t-high high period for clock 0.6 s t-data-hold data hold time 0 0.9 s t-data-setup data setup time 100 ns 3.4.2.2 i2c bus pin-out pin description signal pin number i/o i/o type reset state description multiplexed with scl 44 o open drain z serial clock gpio26 sda 46 i/o open drain z serial data gpio27 see chapter 3.3, "electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 34 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.5 keyboard interface this interface provid es 10 connections: ? 5 rows (row0 to row4) and ? 5 columns (col0 to col4). the scanning is a digital one and de bouncing is performed in the Q2686 wireless cpu ? . no discrete components such as rs, cs (resistors, capacitors) are needed. keyboard interface pin description signal pin number i/o i/o type reset state description multiplexed with row0 68 i/o 1v8 0 row scan gpio9 row1 67 i/o 1v8 0 row scan gpio10 row2 66 i/o 1v8 0 row scan gpio11 row3 65 i/o 1v8 0 row scan gpio12 row4 64 i/o 1v8 0 row scan gpio13 col0 59 i/o 1v8 pull-up column scan gpio4 col1 60 i/o 1v8 pull-up column scan gpio5 col2 61 i/o 1v8 pull-up column scan gpio6 col3 62 i/o 1v8 pull-up column scan gpio7 col4 63 i/o 1v8 pull-up column scan gpio8 see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and for reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 35 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.6 main serial link (uart1) a flexible 8-wire serial interface is available, complying with v24 protocol signalling, but not with v28 (electrical in terface) due to a 2.8 volts interface. the signals are: ? tx data (ct103/tx) ? rx data (ct104/rx) ? request to send (~ct105/rts) ? clear to send (~ct106/cts) ? data terminal ready (~ct108-2/dtr) ? data set ready (~ct107/dsr). ? data carrier detect (~ct109/dcd) ? ring indicator (ct125/ri). uart1 interface pin description see chapter ? 3.3 electrical information for digital i/o? for open drain, 2v8 and 1v8 voltage characteristics and for reset state definition. *according to pc view signal pin number i/o i/o type reset state description multiplexed with ct103/txd1* 71 i 2v8 z transmit serial data gpio36 ct104/rxd1* 73 o 2v8 1 receive serial data gpio37 ~ct105/rts1* 72 i 2v8 z request to send gpio38 ~ct106/cts1* 75 o 2v8 z clear to send gpio39 ~ct107/dsr1* 74 o 2v8 z data set ready gpio40 ~ct108- 2/dtr1* 76 i 2v8 z data terminal ready gpio41 ~ct109/dcd1 * 70 o 2v8 undefined data carrier detect gpio43 ~ct125/ri1 * 69 o 2v8 undefined ring indicator gpio42 ct102/gnd* shielding leads gnd ground
Q2686 wireless cpu ? interfaces confidential ? page: 36 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 the rise and fall time of the reception signals (mai nly ct103) must be less than 300 ns. the maximum baud rate of uart1 is 115 kbit/s for the firmware 6.60 and 921 kbit/s for the later firmware versions. recommendation: the Q2686 wireless cpu ? is designed to operate us ing all the serial interface signals. in particular, it is recommended to use rts and cts for hardware flow control in order to avoid data corruption during transmission. for use with 5-wire serial interface ? signal: ct103/txd1*, ct104/rxd1*, ~ct105/rts1*, ~ct106/cts1* ? the signal ~ct108-2/dtr1* must be managed by following the v24 protocol signalling, if you want to use the slow idle mode. ? other signals and their mult iplexes are not available. ? please refer to technical appendix es of at commands interface guide [7] for more information. for use with 4-wire serial interface ? ct103/txd1*, ct104/rxd1*, ~ct105/rts1*, ~ct106/cts1* ? the signal ~ct108-2/dtr1* must be configured at low level. ? other signals and their mult iplexes are not available. ? please refer to technical appendixes in the at commands interface guide [7] for more information. for use with 2-wire serial interface ? this case is possible for connected external chip, but not recommended (and forbidden for at command or modem use) ? the external chip must be a flow control. ? ct103/txd1*, ct104/rxd1* ? the signal ~ct108-2/dtr1* must be configured at low level. ? the signals ~ct105/rts1*, ~ct 106/cts1* are not used, please configure the at command (at+if c=0,0 see at commands interface guide [7]). ? the signal ~ct105/rts1* must be configured at low level. ? other signals and their mult iplexes are not available. ? please refer to technical appendixes in the at commands interface guide [7] for more information.
Q2686 wireless cpu ? interfaces confidential ? page: 37 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.7 auxiliary serial link (uart2) for future applications (e.g. bluetooth co nnectivity) an auxili ary serial interface (uart2) will be available on the Q2686 product. uart2 interface pin description signal pin number i/o i/o type reset state description multiplexed with ct103 / txd2* 31 i 1v8 z transmit serial data gpio14 ct104 / rxd2* 30 o 1v8 z receive serial data gpio15 ~ct106 / cts2* 32 o 1v8 z clear to send gpio16 ~ct105 / rts2* 33 i 1v8 z request to send gpio17 see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition. * according to pc view the Q2686 is designed to operate using all the serial interface signals. in particular, it is recommended to use r ts and cts for hardware flow control in order to avoid data corrupt ion during transmission. the maximum baud rate of uart2 is 115 kbit/s for the firmware 6.60 and 921 kbit/s for the later firmware versions. for use with 2-wire serial interface ? this case is possible for connected external chip, but not recommended (and forbidden for at command or modem use) ? the external chip must be a flow control. ? ct103/txd2*, ct104/rxd2* ? the signals ~ct105/rts2*, ~ct106/cts2* are not used, you must configure the at command (at+if c=0,0 see at commands interface guide [7]). ? the signal ~ct105/rts2* must be configured at low level. ? other signals and their mult iplexes are not available. ? please refer to technical appendixes in the at commands interface guide [7] for more information.
Q2686 wireless cpu ? interfaces confidential ? page: 38 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.8 sim interface the subscriber identification module (s im) may be directly connected to the Q2686 wireless cpu ? via this dedicated interface. 3.8.1 general description the five signals are: ? sim-vcc: sim power supply ? ~sim-rst: reset ? sim-clk: clock ? sim-io: i/o port ? simpres: sim card detect the sim interface cont rols a 3v/1v8 sim. this inte rface is fully compliant with the gsm 11.11 recommendations concerning sim functions. sim interface pin description signal pin number i/o i/o type reset state description multiplexed with sim-clk 14 o 2v9 / 1v8 0 sim clock not mux ~sim-rst 13 o 2v9 / 1v8 0 sim reset not mux sim-io 11 i/o 2v9 / 1v8 *pull-up sim data not mux sim-vcc 9 o 2v9 / 1v8 sim power supply not mux simpres 12 i 1v8 z sim card detect gpio18 *sim-io pull-up is about 10k ohm see chapter 3.3 ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 39 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 sim interface electric al characteristics parameter conditions minim. typ maxim. unit sim-io v ih i ih = 20 a 0.7xsimvcc v sim-io v il i il = 1ma 0.4 v ~sim-rst, sim-clk v oh source current = 20 a 0.9xsimvcc v sim-io v oh source current = 20 a 0.8xsimvcc ~sim-rst, sim-io, sim- clk v ol sink current = -200 a 0.4 v simvcc = 2.9v ivcc= 1ma 2.84 2.9 2.96 v sim-vcc output voltage simvcc = 1.8v ivcc= 1ma 1.74 1.8 1.86 v sim-vcc current vbatt = 3.6v 10 ma sim-clk rise/fall time loaded with 30pf 20 ns ~sim-rst, rise/fall time loaded with 30pf 20 ns sim-io rise/fall time loaded with 30pf 0.7 1 s sim-clk frequency loaded with 30pf 3.25 mhz note : when simpres is used, a low to high transition means that the sim card is inserted and a high to low transition means that the sim card is removed.
Q2686 wireless cpu ? interfaces confidential ? page: 40 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.9 general purpose input/output the Q2686 wireless cpu ? provides up to 42 general purpose i/os, used to control any external device such as an lcd or a keyboard backlight. all i/os highlighted in grey are 1v8, whereas the others (not highlighted in grey) are 2v8. gpio pin description signal pin number i/o i/o type* reset state multiplexed with reserved 42 do not used* gpio1 51 i/o 1v8 0 not mux* gpio2 53 i/o 1v8 0 not mux* gpio3 50 i/o 1v8 z int0 gpio4 59 i/o 1v8 pull-up col0 gpio5 60 i/o 1v8 pull-up col1 gpio6 61 i/o 1v8 pull-up col2 gpio7 62 i/o 1v8 pull-up col3 gpio8 63 i/o 1v8 pull-up col4 gpio9 68 i/o 1v8 0 row0 gpio10 67 i/o 1v8 0 row1 gpio11 66 i/o 1v8 0 row2 gpio12 65 i/o 1v8 0 row3 gpio13 64 i/o 1v8 0 row4 gpio14 31 i/o 1v8 z ct103 / txd2 gpio15 30 i/o 1v8 z ct104 / rxd2 gpio16 32 i/o 1v8 z ~ct106 / cts2 gpio17 33 i/o 1v8 z ~ct105 / rts2 gpio18 12 i/o 1v8 z simpres gpio19 45 i/o 2v8 z not mux gpio20 48 i/o 2v8 undefined not mux gpio21 47 i/o 2v8 undefined not mux gpio22 57 i/o 2v8 z not mux** gpio23 55 i/o 2v8 z not mux
Q2686 wireless cpu ? interfaces confidential ? page: 41 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 signal pin number i/o i/o type* reset state multiplexed with gpio24 58 i/o 2v8 z not mux gpio25 49 i/o 2v8 z int1 gpio26 44 i/o open drain z scl gpio27 46 i/o open drain z sda gpio28 23 i/o 2v8 z spi1-clk gpio29 25 i/o 2v8 z spi1-io gpio30 24 i/o 2v8 z sp1-i gpio31 22 i/o 2v8 z ~spi1-cs gpio32 26 i/o 2v8 z spi2-clk gpio33 27 i/o 2v8 z spi2-io gpio34 29 i/o 2v8 z sp2-i gpio35 28 i/o 2v8 z ~spi2-cs gpio36 71 i/o 2v8 z ct103 / txd1 gpio37 73 i/o 2v8 1 ct104 / rxd1 gpio38 72 i/o 2v8 z ~ct105 / rts1 gpio39 75 i/o 2v8 z ~ct106 / cts1 gpio40 74 i/o 2v8 z ~ct107 / dsr1 gpio41 76 i/o 2v8 z ~ct108-2 / dtr1 gpio42 69 i/o 2v8 undefined ~ct125 / ri1 gpio43 70 i/o 2v8 undefined ~ct109 / dcd1 gpio44 43 i/o 2v8 undefined 32khz*** see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition. * on the q2687/x61 product, these pins are mult iplexed with the control signals of the parallel bus (the parallel bus is only available on the q2687/x61 product).if an upgrade to the q2687/x61 is envisaged, and if the parallel bus is used, these pins will be mandatory for parallel bus functionality. ** if a bluetooth module is us ed with the Q2686 wireless cpu ? , these gpios must be reserved. *** with the os 6.61: see ?at commands interface guide? [7].
Q2686 wireless cpu ? interfaces confidential ? page: 42 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.10 analog to digital converter two a nalog to d igital c onverter inputs are provid ed by the Q2686 wireless cpu ? . the converters are 10-bit resolution, ranging from 0 to 2v. adc pin description signal pin number i/o i/o type description bat-temp 20 i analog a/d converter aux-adc 21 i analog a/d converter this input is reserved for a battery charging temperature sensor, see chapter 3.13, ?battery charging interface?. adc electrical characteristics parameter min typ max unit resolution 10 bits sampling period 0,5 3 1 s input signal range 0 2 v bat-temp 1m input impedance aux-adc 1m 1 sampling rate only for aux-adc and open at ? application.
Q2686 wireless cpu ? interfaces confidential ? page: 43 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.11 analog audio interface two different microphone inputs an d two different speaker outputs are supported. the Q2686 wireless cpu ? also includes an echo ca ncellation feature, which allows hands-free functionality. 3.11.1 microphone inputs the mic2 inputs already in clude the biasing for an electret microphone, thus allowing easy connection. the mic1 input requires external biasin g if an electret microphone is used. 3.11.1.1 common microphone input characteristics the connection may be either differential or single-ended but using a differential connection is strongly reco mmended, in order to reject common mode noise and tdma noise . when using a single-ended connection, ensure a good ground plane, good filtering as well as shielding in order to avoid any disturbance on the audio path. the gain in mic inputs is internally ad justed and may be tuned by using an at command. both may be configured either as differential or single-ended. 3.11.1.2 main microphone inputs (mic2) by default, the mic2 inputs are differe ntial inputs, but may be configured as single-ended. they already include co nvenient biasing for an electret microphone. the electret microphone may be directly connected to these inputs. ac coupling is already embedded in the wireless cpu ? . mic2 pin description signal pin number i/o i/o type description mic2p 36 i analog microphone 2 positive input mic2n 34 i analog microphone 2 negative input
Q2686 wireless cpu ? interfaces confidential ? page: 44 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.11.1.3 auxiliary microphone inputs (mic1) by default, the mic1 inputs are single-ended, but may be configured as differential. an external biasing is need ed if an electret microphone is used. ac coupling is already embedded in the wireless cpu ? . mic1 pin description signal pin number i/o i/o type description mic1p 40 i analog microphone 1 positive input mic1n 38 i analog microphone 1 negative input 3.11.1.4 microphone electrical characteristics the characteristics of both Q2686 wireless cpu ? microphone inputs are defined in the following tables. mic2 characteristics parameter min. typ max. unit voltage 2 2.1 2.2 v internal biasing output current 1.5 ma internal ac coupling 100 nf mic2p (mic2n left open) 1100 1340 1600 mic2p (mic2n = gnd) 900 1140 1400 mic2n (mic2p left open) 1100 1340 1600 impedance single-ended mic2n (mic2p = gnd) 900 1140 1400 differential input voltage* 346 mv rms input voltage absolute maximum ratings 0 6v ** v mic1 characteristics parameter minim. typ maxim. unit voltage n/a v internal biasing output current n/a a internal ac coupling 100 nf mic1p (mic1n left open) 70 100 162 k mic1p (mic1n = gnd) 70 100 162 k mic1n (mic1p left open) 70 100 162 k impedance single-ended mic1n (mic1p = gnd) 70 100 162 k differential input voltage * 346 mv rms input voltage absolute maximum ratings 0 6 v ? * the input voltage depends on the input microphone gain set by at command. ? ** because mic2p is internally biased, a coupling capacitor must be used to connect an audio signal provided by an active gene rator. only a passive microphone may be directly connected to the mi2p and mic2n inputs.
Q2686 wireless cpu ? interfaces confidential ? page: 45 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.11.2 common speaker output characteristics the connection is single-ended on spk1 and either is differential or single- ended on spk2. use of a differential connection to reject common mode noise and tdma noise is strongly recommended. moreover, in single-ended mode, ? of the power is lost . when using a single-ended connection, ensure a good ground plane, a good filtering as well as shielding in order to avoid any disturbance on the audio path. 3.11.2.1 differential connection impedance of the speaker amplifier output in differential mode is shown below: electrical characteristics parameter typ unit z (spk2p, spk2n) 8 3.11.2.2 single-ended connection impedance of the speaker amplifier outp ut in single-ended mode is shown below: electrical characteristics parameter typ unit z (spk1p, spk1n) 16 or 32 z (spk2p, spk2n) 4 3.11.3 speaker outputs 3.11.3.1 speaker 2 outputs speaker 2 outputs pin description signal pin number i/o i/o type description spk2p 39 o analog speaker 2 positive output spk2n 41 o analog speaker 2 negative output
Q2686 wireless cpu ? interfaces confidential ? page: 46 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.11.3.2 speaker 1 outputs speaker 1 outputs pin description signal pin number i/o i/o type description spk1p 35 o analog speaker 1 positive output spk1n 37 o analog speaker 1 negative output 3.11.3.3 speaker power output the maximum power output of the two speakers is not the same due to the different configurations between speake r1, which is only single-ended, and speaker2, which may be differential. sp eaker2, thus provides more power. the maximum specifications given be low are available with the maximum power output configuration values set by at command. speaker1 single-ended spk1 p output characteristics parameter minim. typ maxim. unit output biasing voltage 1.20 v output voltage 0 2.75 v pp output power single-ended with 32-ohm load 27 mw output current maximum tolerated 85 ma only spk1p can be used. speaker2 differential output characteristics parameter minim. typ maxim. unit output biasing voltage spk2p and spk2n 1.20 v voltage on spk2p 0 0.9 v pp voltage on spk2n 0 0.9 v pp output voltage diff voltage (spk2p ? spk2n) 0 1.8 v pp output power differential with 8-ohm load 48 mw output current maximum tolerated 110 ma if a single-ended solution is used with the speaker2 output, only one of the two spk2s must be selected. the result is a maximum output power divided by 2.
Q2686 wireless cpu ? interfaces confidential ? page: 47 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.12 buzzer output this output is controlled by a pulse width modulation controller and may be used only as buzzer. buzz-out is an open drain output. a buzzer can be directly connected between this output and vbatt. the maximum current is 100 ma (peak). pin description of pwm/buzzer output signal pin number i/o i/o type reset state description buzz-out 15 o open drain z buzzer output see chapter 3.3, ?electrical information for digi tal i/o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition. electrical characteristics parameter condition minimum maximum unit v ol on iol = 100ma 0.4 v i peak vbatt = vbattmax 100 ma frequency 1 50000 hz
Q2686 wireless cpu ? interfaces confidential ? page: 48 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.13 battery charging interface the Q2686 wireless cpu ? supports one battery charging circuit, two algorithms and one hardware charging mode (pre-charging) for 3 battery technologies: ? ni-cd (nickel-cadmium) with algorithm 0 ? ni-mh (nickel-mtal hydrure) with algorithm 0 ? li-ion (lithium-ion) with algorithm 1 the two algorithms control a switch, wh ich connects the chg-in signal to the vbatt signal. the algorithm controls th e frequency and the connected time of the switching. during the charging pr ocedure, battery charging level is controlled and when the li-ion algori thm is used, battery temperature is monitored via the bat-temp adc input. one more charging procedure is pr ovided by the Q2686 wireless cpu ? . this is called ?pre-charging? mode, but is a spec ial charging mode as it is activated only when the wireless cpu ? is off. control is thus only performed by the hardware. the purpose of this charging mode is to avoid battery damage by preventing the battery from being discharged to below the minimum battery level. 3.13.1 ni-cd / ni-mh charging algorithm to charge the battery, the algorithm measures battery level when the switch is open (t2) and charges the ba ttery by closing the switch (t3). when the battery is charged (battery voltage has reache d battlevelmax) the switch is open for time t3. battlevelmax t1 t2 t3 battery level switch state opened closed figure 5: ni-cd / ni-mh charging waveform electrical characteristics of ni-cd / ni-mh battery timing charge parameter min typ max unit t1 1 s t2 0.1 s t3 5 s note: t1,t2,t3 and battlevelmax may be configured by at command. the battery level is monitored by the software (but not temperature)
Q2686 wireless cpu ? interfaces confidential ? page: 49 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.13.2 li-ion charging algorithm the li-ion algorithm provides battery te mperature monitoring, which is highly recommended to prevent battery dama ge during the charging phase. the li-ion charger algorithm can be broken down into three phases: 1. constant charge 2. beginning of pulse charge 3. end of pulse charge the three phases can be seen on the following waveform for full charging: figure 6: li-ion full-charging waveform electrical characteristics of li-ion battery timing charge parameter min typ max unit step 1 switching closed always s open 0.1 s step 2 switching closed 1 s open 0.1 3 s step 3 switching closed 1 s
Q2686 wireless cpu ? interfaces confidential ? page: 50 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.13.3 controlled pre-charging hardware there is another charging mode, pre- charging mode, which is a hardware- controlled and not software-controlled. th is mode is only activated when the wireless cpu ? is off and when vbatt is in the voltage range of 2.8v < vbatt < 3.2v. the charger power supply must be connected to chg-in (pin 6,8). in pre-charging mode, the battery is charged with a direct current of 50ma. the flash-led blinks when this mode is activated. this mode is not a real charging mode as it is not possible to obtain a full charge with it, but it is useful to save battery life by preventing the battery from being discharged to belo w the low limit voltage value. 3.13.4 temperature monitoring temperature monitoring is only availabl e for the li-ion battery with algorithm 1. the bat-temp (pin 20) adc input must be used to sample the temperature analog signal provided by an ntc temperature sensor. the minimum and maximum temperature range may be set by at command. pin description of battery charging interface signal pin number i/o i/o type description chg-in 6,8 i analog current source input bat-temp 20 i analog a/d converter electrical characteristics of battery charging interface parameter minimum typ maximum unit charging operating temperature 0 50 c resolution 10 bits sampling rate 216 s/s input impedance ( r ) 1m bat-temp (pin 20 ) input signal range 0 2 v voltage (for i=imax) 4.6* v voltage (for i=0) 6* v chg-in (pin 6, 8 ) current imax 800 ma * to be configured as specified by the battery manufacturer
Q2686 wireless cpu ? interfaces confidential ? page: 51 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.14 on / ~off signal this input is used to switch the wireless cpu ? quik Q2686 on or off. a high-level signal must be provided on the on/~off pin to switch on the wireless cpu ? . this signal can be left at high level until switch-off. to switch off the wireless cpu ? , the on/off pin must be released. the wireless cpu ? can be switched off via the operating system. pin description signal pin number i/o i/o type description on/ off 19 i cmos wireless cpu ? power-on electrical characteri stics of the signals parameter i/o type minimum maximum unit v il cmos vbatt x 0.2 v v ih cmos vbatt x 0.8 vbatt v warning: all external signals must be in active when the wireless cpu ? module is off to avoid any damage when starting and allow the wireless cpu ? to start and stop correctly. 3.14.1 operating sequences 3.14.1.1 power-on once the wireless cpu ? is supplied, the application must set the on/off signal to high to start the wireless cpu ? power-on sequence. the on/off signal must be held high during a minimum delay of t on/off-hold (minimum hold delay on the on/~off signal) to power-on. after this delay, an internal mechanism maintains the wireless cpu ? in power-on condition. during the power-on sequence, an internal reset is automatically performed by the wireless cpu ? for 40ms (typical). any external reset should be avoided during this phase. once initialization is completed (tim ing is sim- and network-dependent), the at interface answers "ok" to the applicat ion. for further details, please check the at commands interface guide [7].
Q2686 wireless cpu ? interfaces confidential ? page: 52 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 power supply on/off state of the wireless cpu ? wireless cpu ? off i bb+rf < 22 a at answers ? ok ? wireless cpu ? ready t on/off-hold (2000ms min) sim and network dependent reset mode i bb+rf =20 to 40ma internal rs t t rst (40ms typ) wireless cpu ? on i bb+rf <120ma i bb+rf = overall current consumption (base band + rf part) figure 7: power-on sequence (no pin code activated) the duration of the firmware po wer-up sequence depends on: x the need to perform a recovery sequ ence if the power has been lost during a flash memory modification. other factors have a minor influence x the number of parameters stored in eeprom by the at commands received so far x the ageing of the hardware componen ts, especially the flash memory x the temperature conditions the recommended way to de-assert the on/~off signal is to use either an at command or wind indicators: the appl ication must detect the end of the power-up initialization and de-assert on/~off afterwards. x send an ?at? command and wait for the ?ok? answer: once the initialization is complete the at in terface answers ? ok ? to ?at? message 1 . x wait for the ?+wind: 3? message: after initialization, the wireless cpu ? , if configured to do so, will return an unsolicited ?+wind: 3? message. the generation of this message is enabled or disabled via an at command. note : see also ?at commands interface guide? [7] for more information on these commands. 1 if the application manages hardware flow cont rol, the at command can be sent during the initialisation phase.
Q2686 wireless cpu ? interfaces confidential ? page: 53 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 proceeding thus ? by software detectio n - will always prevent the application from de-asserting the on/~off signal too early. if wind indicators are disabled or at commands unavailable or not used, it is still possible to de-assert on/~o ff after a delay long enough ( t on/off-hold ) to ensure that the firmware has already co mpleted its power-up initialization. the table below gives the minimum values of t on/off-hold : t on/off-hold minimum values t on/off-hold open at ? firmware safe evaluations of the firmware power-up time 6.60 & above 8 s the above figure take the worst cases into account: power-loss recovery operations, slow flash memory operations in high temperature conditions, and so on. but, they are safe because th ey are large enough to ensure that on/~off is not de-asserted too early. additional notes: 1. typical power-up initialization time figures for best cases conditions (no power-loss recovery, fast and new flash memory?) approximate 3.5 seconds in every firmware vers ion. but releasing on/~off after this delay does not guarantee that th e application will actually start-up if for example the power plug ha s been pulled off during a flash memory operation, like a phone book entry update or an at&w command? 2. the on/~off signal can be left at a high level until switch off. but this is not recommended as it will prevent the at+cpof command from performing a clean power-off. (see also note in section 3.14.1.2 on power-off for an alternate usage) 3. when using a battery as power source, it is not recommended to let this signal high: if the battery voltage is too low an d the on/~off signal at low level, an internal mechanism switches off the wireless cpu ? . this automatic process prevents the battery to be over discharged and optimize its life span. 4. during the power-on sequence, an internal reset is automatically performed by the wireless cpu ? for 40 ms (typical). any external reset should be avoided during this phase. 5. connecting a charger on the wireless cpu ? as exactly the same effect than setting the on/~off signal. in particular the wireless cpu ? will not power-off after the at+cpof command, unless the charger is disconnected.
Q2686 wireless cpu ? interfaces confidential ? page: 54 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.14.1.2 power-off to power-off the wireless cpu ? correctly, the application must reset the on/off signal and then send the at+cpof command to deregister from the network and switch off the wireless cpu ? . once the "ok" response is issued by the wireless cpu ? , the power supply can be switched off. power supply on / off at command state of the wireless cpu ? a t+cpof wireless cpu ? ready wireless cpu ? off i 22 a network dependent ok res p onse i bb+rf = overall current consumption (base band + rf part) figure 8: power-off sequence note: if the on/~off pin is maintained to on (high level), then the wireless cpu ? cannot be switched off.
Q2686 wireless cpu ? interfaces confidential ? page: 55 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.15 boot signal a specific boot control pi n is available to download the Q2686 wireless cpu ? (only if the standard xmodem download , controlled with at command, is not possible). a specific pc software program, provided by wavecom, is needed to perform this specific download. the boot pin must be connected to vcc_1v8 for this specific download. operating mode description boot operating mode comment leave open normal use no download leave open download xmodem at command for download at+wdwl 1 download specific need wavecom pc software for more information, see Q2686 / os 6.60 at command interface guide [7]. this boot pin must be left open eith er for normal use or xmodem download. however, in order to render the develo pment and maintenance phases easier, it is highly recommended to set a test point, either a jumper or a switch on the vcc_1v8 (pin 5) power supply. pin description signal pin number i/o i/o type description boot 16 i 1v8 download mode selection
Q2686 wireless cpu ? interfaces confidential ? page: 56 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.16 reset signal (~reset) this signal is used to force a reset proc edure by providing low level for at least 200 s. this signal must be considered as an emergency reset only. a reset procedure is already driven by the in ternal hardware during the power-up sequence. this signal may also be used to provide a reset to an external device (at power- up only). if no external reset is necessary, this input may be left open. if used (emergency reset), it must be driven by an open collector or an open drain. the wireless cpu ? remains in reset mode as long as the ~reset signal is held low. caution: this signal should only be used for ?emergency? resets . an operating system reset is to be preferred to a hardware reset. reset sequence : to activate the "emergency" reset sequence, the ~reset signal must be set to low for 200 p s minimum. as soon as the reset is completed, the at interface answers "ok" to the application. reset mode i bb+rf =20 to 40ma ~reset state of the wireless cpu ? wireless cpu ? ready rt = min 1 :200 p s or typ 2 = 40ms at answers ?ok? wireless cpu ? ready sim and network dependent wireless cpu ? on i bb+rf <120ma without loc update ct = typ:34ms figure 9: reset sequence waveform at power-up, the ~reset time (rt) is carried out after switching on the wireless cpu ? . it is generated by the internal Q2686 wireless cpu ? voltage supervisor. the ~reset time is provided by the internal rc component. to keep the same time, it is not recommended to connect another r or c component on the ~reset signal. only a switch or an open drain gate is recommended. ct is the cancellation time required for the wireless cpu ? Q2686 initialization. ct is automatically carried out by the Q2686 wireless cpu ? after a hardware reset.
Q2686 wireless cpu ? interfaces confidential ? page: 57 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 electrical characteri stics of the signals parameter minimum typ maximum unit input impedance ( r )* 330k input impedance ( c ) 10n f ~reset time (rt) 1 200 ? s ~reset time (rt) 2 at power up only 20 40 100 ms cancellation time (ct) 34 ms v h 0.57 v v il 0 0.57 v v ih 1.33 v * internal pull-up * v h: hysterisis voltage 1 this reset time is the minimum to be carr ied out on the ~reset signal when the power supply is already stabilized. 2 this reset time is internally carried out by the wireless cpu ? power supply supervisor only when the wireless cpu ? power supplies are powered on. pin description signal pin number i/o i/o type description ~reset 18 i/o open drain 1v8 wireless cpu ? reset
Q2686 wireless cpu ? interfaces confidential ? page: 58 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.17 external interrupt the Q2686 wireless cpu ? provides two external interrupt inputs. these interrupt inputs can be activated on: ? high to low edge ? low to high edge ? low to high and high to low edge when used, the interrupt inpu ts must not be left open. if not used, they must be configured as gpios. pin description signal pin number i/o i/o type reset state description multiplexed with int1 49 i 2v8 z external interrupt gpio25 int0 50 i 1v8 z external interrupt gpio3 see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition. electrical characteri stics of the signals parameter minimum maximum unit v il 0.84 v int1 v ih 1.96 v v il 0.54 v int0 v ih 1.33 v
Q2686 wireless cpu ? interfaces confidential ? page: 59 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.18 vcc_2v8 and vcc_1v8 output these outputs can only be used to connect pull-up resistor. vcc_2v8 and vcc_1v8 must be used as a reference su pply. these voltages supplies are available when the wireless cpu ? is on. pin description signal pin number i/o i/o type description vcc_2v8 10 o supply digital supply vcc_1v8 5 o supply digital supply electrical characteri stics of the signals parameter minimum typ maximum unit output voltage 2.74 2.8 2.86 v vcc_2v8 output current 15 ma output voltage 1.76 1.8 1.94 v vcc_1v8 output current 15 ma
Q2686 wireless cpu ? interfaces confidential ? page: 60 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.19 bat-rtc (backup battery) the Q2686 wireless cpu ? provides an input/output to connect a real time clock (rtc) power supply. 3.19.1 interface description this pin is used as a back-up power supply for the internal r eal t ime c lock. the rtc is supported by the wireless cpu ? when vbatt is available, but a back-up power supply is needed to save date and time when vbatt is switched off (vbatt = 0v). 2.5v regulator 1.8v regulator from vbatt to rtc Q2686 bat-rtc (pin 7) figure 10: real time clock power supply if the rtc is not used, this pin can be left open. if vbatt is available, the back-up battery can be charged by the internal 2.5v power supply regulator. pin description signal pin number i/o i/o type description bat-rtc 7 i/o supply rtc back-up supply electrical characteri stics of the signals parameter minimum typ maximum unit input voltage 1.85 2.5 v input current consumption* 3.3 a output voltage 2.45 v output current 2 ma *provided by an rtc back-up battery when wireless cpu ? power supply is off (vbatt = 0v).
Q2686 wireless cpu ? interfaces confidential ? page: 61 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.20 flash-led signal flash led is an open drain output. a led and a resistor can be directly connected between this output and vbatt. when the Q2686 wireless cpu ? is off, if 2.8v < vbatt < 3.2v and a charger is connected on chg-in inputs, this ou tput flashes ( 100 ms on, 900 ms off ) to indicate the pre-charging phase of the battery. when the Q2686 wireless cpu ? is on, this output is used to indicate network status. flash-led status Q2686 state vbatt status flash-led status Q2686 wireless cpu ? status vbatt<2.8v or vbatt> 3.2v off wireless cpu ? is off wireless cpu ? off 2.8v < vbatt < 3.2v pre-charge flash led on for 100 ms, off for 900 ms wireless cpu ? is off, pre-charging mode (charger must be connected on chg-in to activate this mode) permanent wireless cpu ? switched on, not registered on the network slow flash led on for 200 ms, off for 2 s wireless cpu ? switched on, registered on the network quick flash led on for 200 ms, off for 600 ms wireless cpu ? switched on, registered on the network, communication in progress wireless cpu ? on vbatt > 3.2v very quick flash led on for 100ms, off for 200ms wireless cpu ? switched on, software downloaded is either corrupted or non- compatible ("bad software") pin description signal pin number i/o i/o type reset state description flash- led 17 o open drain output 1 and undefined led driving see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 62 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 undefined 2s wireless cpu ? ~reset pin 18 flash-led pin 17 1 led off figure 11: flash-led state during reset and initialization time flash-led state is high during the reset time and undefined during the software initialization time. during soft ware initialization time, for 2 seconds max after reset cancellation, the flash- led signal is toggling and does not provide wireless cpu ? status. after the 2s period, the flash-led provides the true status of the wireless cpu ? . electrical characteri stics of the signal parameter condition minimum typ maximum unit v ol 0.4 v i out 8 ma
Q2686 wireless cpu ? interfaces confidential ? page: 63 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.21 digital audio interface (pcm) digital audio interface (pcm) interface mode allows connectivity with audio standard peripherals. it can be used, fo r example, to connect an external audio codec. the programmability of this mode allows to address a large range of audio peripherals. pcm features: ? iom-2 compatible device on physical level ? master mode only with 6 slots by frame, user only on slot 0 ? bit rate single clock mode at 768khz only ? 16 bits data word msb first only ? linear law only (no compression law) ? long frame synchronization only ? push-pull configuration on pcm-out and pcm-in the digital audio interface configuratio n cannot differ from that specified above. 3.21.1 description the pcm interface consists of 4 wires: ? pcm-sync (output): the frame synchronization signal delivers an 8khz frequency pulse that synchronizes th e frame data in and the frame data out. ? pcm-clk (output): the frame bit clock signal controls data transfer with the audio peripheral. ? pcm-out (output): the frame ?data out? relies on the selected configuration mode. ? pcm-in (input): the frame ?data in? relies on the selected configuration mode.
Q2686 wireless cpu ? interfaces confidential ? page: 64 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 slot 0 slot 1 slot 5 slot 0 slot 0 slot 1 slot 5 slot 0 slot 5 slot 5 pcm-sync pcm-clk pcm-in pcm-out tsync_high tsync_low e n d o f fr a m e b e g i n i n g o f fr a m e figure 12: pcm frame waveform t outdelay t sync-clk t clk-cycle t in-hold t in-setup pcm-sync pcm-clk pcm-in pcm-out slot 0 bit 15 slot 0 bit 14 slot 0 bit 13 slot 5 bit 0 slot 0 bit 15 slot 0 bit 14 slot 0 bit 13 slot 5 bit 0 figure 13: pcm sampling waveform
Q2686 wireless cpu ? interfaces confidential ? page: 65 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 ac characteristics signal description minimum typ maximum unit t sync_low + t sync_high pcm-sync period 125 s t sync_low pcm-sync low time 93 s t sync_high pcm-sync high time 32 s t sync-clk pcm-sync to pcm-clk time -154 ns t clk-cycle pcm-clk period 1302 ns t in-setup pcm-in setup time 50 ns t in-hold pcm-in hold time 50 ns t out-delay pcm-out delay time 20 ns pin description of the pcm interface signal pin number i/o i/o type reset state description pcm-sync 77 o 1v8 pull-down frame synchronization 8khz pcm-clk 79 o 1v8 pull-down data clock pcm-out 80 o 1v8 pull-up data output pcm-in 78 i 1v8 pull-up data input see chapter 3.3, ?electrical information for digital i/ o? for open drain, 2v8 and 1v8 voltage characteristics and reset state definition.
Q2686 wireless cpu ? interfaces confidential ? page: 66 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.22 usb 2.0 interface a 4-wire usb slave interface is availabl e which complies with usb 2.0 protocol signaling. but it is not compliant with the electrical interface, due to the 5v of vpad-usb. the usb interface sign als are vpad-usb, usb-dp, usb-dm and gnd. usb interface features: ? 12mbit/s full-speed transfer rate ? 3.3v typ compatible ? usb softconnect feature ? download feature is not supported by usb ? cdc 1.1 ? acm compliant note : a 5v to 3.3v typ voltage regulator is needed between the external interface power in line (+5v) and the wireless cpu ? line (vpad-usb). pin description of the usb interface signal pin number i/o i/o type description vpad-usb 52 i vpad_usb usb power supply usb-dp 54 i/o vpad_usb differential data interface positive usb-dm 56 i/o vpad_usb differential data interface negative electrical characteri stics of the signals parameter min typ max unit vpad-usb, usb-dp, usb-dm 3 3.3 3.6 v vpad-usb input current consumption 8 ma parameter min typ max unit vpad-usb, usb-dp, usb-dm 3 3.3 3.6 v
Q2686 wireless cpu ? interfaces confidential ? page: 67 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 3.23 rf interface the impedance is 50 nominal and the dc impedance is 0 . 3.23.1 rf connections u.fl connector a wide variety of cables fitted with u. fl connectors is offered by different suppliers. soldered solution the soldered solution will preferably be based on an rg178 coaxial cable. imp connector this connector is dedicated to board- to-board applications and must be soldered on the customer board. the supplier is radiall (reference: r107 064 900). notes : ? the Q2686 wireless cpu ? does not support an antenna switch for a car kit, but this function can be implem ented externally and can be driven using a gpio. ? the antenna cable and connector sh ould be selected in order to minimize losses in the frequency bands used for gsm 850/900mhz and 1800/1900mhz. ? 0.5db may be considered as the maximum value of loss between the wireless cpu ? and an external connector. ? for mounting, assembly and handling of the imp connector, please contact the supplier, radiall, direct ly. wavecom cannot provide customer support for use of this connector. 3.23.2 rf performance rf performance is comp liant with the etsi gsm 05.05 recommendation. the main receiver parameters are: ? gsm850 reference sensitivity = -104 dbm static & tuhigh ? e-gsm900 reference sensitivity = -104 dbm static & tuhigh ? dcs1800 reference sensitivity = -102 dbm static & tuhigh ? pcs1900 reference sensitivity = -102 dbm static & tuhigh ? selectivity @ 200 khz: > +9 dbc ? selectivity @ 400 khz: > +41 dbc ? linear dynamic range: 63 db ? co-channel rejection: >= 9 dbc
Q2686 wireless cpu ? interfaces confidential ? page: 68 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 transmitter parameters: ? maximum output power (egsm & gsm850): 33 dbm +/- 2 db at ambient temperature ? maximum output power (gsm1800 & pcs1900): 30 dbm +/- 2 db at ambient temperature ? minimum output power (egsm & gsm850): 5 dbm +/- 5 db at ambient temperature ? minimum output power (gsm1800 & pcs1900): 0 dbm +/- 5 db at ambient temperature 3.23.3 antenna specifications the antenna must meet the following requirements: ? the optimum operating frequency depe nds on the application. either a dual-band or quad-band antenna will op erate in these frequency bands and have the following characteristics: Q2686 characteristic e-gsm 900 dcs 1800 gsm 850 pcs 1900 tx frequency 880 to 915 mhz 1710 to 1785 mhz 824 to 849 mhz 1850 to 1910 mhz rx frequency 925 to 960 mhz 1805 to 1880 mhz 869 to 894 mhz 1930 to 1990 mhz impedance 50 rx max 1.5:1 vswr tx max 1.5:1 typical radiated gain 0dbi in one direction at least
Q2686 wireless cpu ? technical specifications confidential ? page: 69 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 4 technical specifications 4.1 general purpose connector pin-out description signal name signal name description i/o* voltage mux nominal pin number nominal mux voltage i/o* description power supply i vbatt vbatt 1 2 vbatt vbatt i power supply power supply i vbatt vbatt 3 4 vbatt vbatt i power supply 1.8v supply output o vcc_1v8 vcc_1v8 5 6 chg-in chg-in i charger input rtc battery connection i/o bat- rtc bat-rtc 7 8 chg-in chg-in i charger input sim power supply o 1v8 or 3v sim-vcc 9 10 vcc_2v8 vcc_2v8 o 2.8v supply output sim data i/o 1v8 or 3v sim-io 11 12 simpres gpio18 vcc_1v8 i sim detection sim reset output o 1v8 or 3v ~sim- rst 13 14 sim-clk 1v8 or 3v o sim clock buzzer output o open drain buzz- out 15 16 boot vcc_1v8 i not used flash led output o open drain flash- led 17 18 ~reset vcc_1v8 i/o reset input on / ~off control i vbatt on/~off 19 20 bat- temp analog i analog temperature analog to digital input i analog aux- adc 21 22 ~spi1-cs gpio31 vcc_2v8 o spi1 chip select spi1 clock o vcc_2v8 gpio32 spi1-clk 23 24 spi1-i gpio30 vcc_2v8 i spi1 data input spi1 data input / output i/o vcc_2v8 gpio29 spi1-io 25 26 spi2-clk gpio32 vcc_2v8 o spi2 clock spi2 data input / output i/o vcc_2v8 gpio33 spi2-io 27 28 ~spi2-cs gpio35 vcc_2v8 o spi2 chip select spi2 data input i vcc_2v8 gpio34 spi2-i 29 30 ct104- rxd2 gpio15 vcc_1v8 o auxiliary rs232 receive auxiliary rs232 transmit i vcc_1v8 gpio14 ct103- txd2 31 32 ~ct106- cts2 gpio16 vcc_1v8 o auxiliary rs232 clear to send auxiliary rs232 request to send i vcc_1v8 gpio17 ~ct105- rts2 33 34 mic2n analog i micro 2 input negative speaker 1 output positive o analog spk1p 35 36 mic2p analog i micro 2 input positive speaker 1 output negative o analog spk1n 37 38 mic1n analog i micro 1 input negative
Q2686 wireless cpu ? technical specifications confidential ? page: 70 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 signal name signal name description i/o* voltage mux nominal pin number nominal mux voltage i/o* description speaker 2 output positive o analog spk2p 39 40 mic1p analog i micro 1 input positive speaker 2 output negative o analog spk2n 41 42 reserved ** i/o vcc_2v8 gpio44 43 44 scl gpio26 open drain o i2c clock i/o vcc_2v8 gpio19 45 46 sda gpio27 open drain i/o i2c data i/o vcc_2v8 gpio21 47 48 gpio20 vcc_2v8 i/o interruption 1 input i vcc_2v8 gpio25 int1 49 50 int0 gpio3 vcc_1v8 i interruption 0 input i/o vcc_1v8 ** gpio1 51 52 vpad- usb vpad- usb i usb power supply input i/o vcc_1v8 ** gpio2 53 54 usb-dp vpad- usb i/o usb data i/o vcc_2v8 ** gpio23 55 56 usb-dm vpad- usb i/o usb data i/o vcc_2v8 ** gpio22 57 58 gpio24 vcc_2v8 i/o keypad column 0 i/o vcc_1v8 gpio4 col0 59 60 col1 gpio5 vcc_1v8 i/o keypad column 1 keypad column 2 i/o vcc_1v8 gpio6 col2 61 62 col3 gpio7 vcc_1v8 i/o keypad column 3 keypad column 4 i/o vcc_1v8 gpio8 col4 63 64 row4 gpio13 vcc_1v8 i/o keypad row 4 keypad row 3 i/o vcc_1v8 gpio12 row3 65 66 row2 gpio11 vcc_1v8 i/o keypad row 2 keypad row 1 i/o vcc_1v8 gpio10 row1 67 68 row0 gpio9 vcc_1v8 i/o keypad row 0 main rs232 ring indicator o vcc_2v8 gpio42 ~ct125- ri 69 70 ~ct109- dcd1 gpio43 vcc_2v8 o main rs232 data carrier detect main rs232 transmit i vcc_2v8 gpio36 ct103- txd1 71 72 ~ct105- rts1 gpio38 vcc_2v8 i main rs232 request to send main rs232 receive o vcc_2v8 gpio37 ct104- rxd1 73 74 ~ct107- dsr1 gpio40 vcc_2v8 o main rs232 data set ready main rs232 clear to send o vcc_2v8 gpio39 ~ct106- cts1 75 76 ~ct108- 2-dtr1 gpio41 vcc_2v8 i main rs232 data terminal ready pcm frame synchro o vcc_1v8 pcm- sync 77 78 pcm-in vcc_1v8 i pcm data input pcm clock o vcc_1v8 pcm- clk 79 80 pcm- out vcc_1v8 o pcm data output nc-1 81 82 reserved nc-3 83 84 nc-2 nc-5 85 86 nc-4
Q2686 wireless cpu ? technical specifications confidential ? page: 71 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 signal name signal name description i/o* voltage mux nominal pin number nominal mux voltage i/o* description nc-7 87 88 nc-6 nc-9 89 90 nc-8 nc-11 91 92 nc-10 nc-13 93 94 nc-12 nc-15 95 96 nc-14 nc-17 97 98 nc-16 nc-19 99 100 nc-18 * the i/o direction information is only for the no minal signal. when the signal is configured in gpio, it can always be an input or an output. ** for more information about the multiplexing of these signals, see ?general purpose input /output?, section 3.9
Q2686 wireless cpu ? technical specifications confidential ? page: 72 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 4.2 environmental specifications wavecom specifies the following temper ature range for the Q2686 product. the Q2686 wireless cpu ? is compliant with the following operating class. conditions temperature range operating / class a -20 c to +55c operating / storage / class b -40 c to +85c function status classification : class a: the wireless cpu ? remains fully functional, meet ing gsm performance criteria in accordance with etsi requirements , across the specified temperature range. class b: the wireless cpu ? remains fully functional, acro ss the specified temperature range. some gsm parameters may occasion ally deviate from the etsi specified requirements and this deviation does not affect the ability of the wireless cpu ? to connect to the cellular network and function fully, as it does within the class a range. Q2686 environnemental classes type of test standards storage transportation operating (port use) class 1.2 class 2.3 class 7.3 cold iec 68-2.1 -25 c 72 h -40 c 72 h -20 c (gsm900) 16 h ab test -10 c (gsm1800/1900) 16h dry heat iec 68-2.2 +70 c 72 h +70 c 72 h +55 c 16 h bb test change of temperature iec 68-2.14 -40 / +30 c 5 cycles -20 / +30 c (gsm900) 3 cycles na/nb test t1 = 3 h -10 / +30 c (gsm1800/1900): 3 cycles t1 = 3 h damp heat iec 68-2.30 +30 c 2 cycles +40 c 2 cycles +40 c 2 cycles cyclic db test 90% - 100% rh 90% - 100% rh 90% - 100% rh variant 1 variant 1 variant 1 damp heat iec 68-2.56 +30 c 4 days +40 c 4 days +40 c 4 days cb test sinusoidal vibration iec 68-2.6 5 - 62 hz : 5 mm / s fc test 62 - 200hz : 2 m / s2 3 x 5 sweep cycles 5 - 20 hz : 0.96 m2 / s3 10 -12 hz : 0.96 m2 / s3 random vibration iec 68-3.36 20 - 500hz : - 3 db / oct 12 - 150hz : - 3 db / oct wide band fdb test 3 x 10 min 3 x 30 min figure 14: environmental classes
Q2686 wireless cpu ? technical specifications confidential ? page: 73 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 4.3 conformance with atex 94/9/ce directive to evaluate the conformity of the final product with atex 94/9/ce directive the following datas must be taken into account: ? sum of all capacitors : 84 ? f ? sum of all inductances : 12 ? h 4.4 mechanical specifications 4.4.1 physical characteristics the Q2686 wireless cpu ? has a complete self-contained shield. ? overall dimensions : 32.2x40x4 mm (except shielding pins) ? weight : <10 g 4.4.2 mechanical drawings the mechanical specifications of the Q2686 wireless cpu ? are shown in the following page.
Q2686 wireless cpu ? technical specifications confidential ? page: 74 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 figure 15: mechanical drawing
Q2686 wireless cpu ? connector and peripheral device references confidential ? page: 75 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 5 connector and peripheral device references 5.1 general purpose connector the gpc is a 100-pin connector with 0.5mm pitch from the from panasonic group's p5k series, with th e following reference: axk69510002 the matting connector has the following reference: axk59510001 the stacking height is 3.0 mm. wavecom recommends that you use the axk59510001 connector for your application to benefit from wavecom?s prices. for more information, contact wavecom, specifying the wavecom connector reference: wm17077 . for further details see the gpc data sh eets in the appendix. more information is also available from http://www.panasonic.com/host/industrl.html 5.2 sim card reader ? itt cannon ccm03 series (see http://www.ittcannon.com ) ? amphenol c707 series (see http://www.amphenol.com ) ? jae (see http://www.jae.com ) ? molex 99228-0002 (connector) / molex 91236-0002 (holder) (see http://www.molex.com ) 5.3 microphone possible suppliers: ? hosiden ? panasonic ? peiker
Q2686 wireless cpu ? connector and peripheral device references confidential ? page: 76 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 5.4 speaker possible suppliers: ? sanyo ? hosiden ? primo ? philips 5.5 antenna cable a wide variety of cables fitted with uf-l connectors is offered by hirose: ? uf-l pigtails, ex: ref = u.fl-2lp(v)-04-a-(100) ? uf-l ref = u.fl-r-smt ? uf-l cable assemblies, ? between series cable assemblies. more information is also available from http://www.hirose-connectors.com/ . a coaxial cable can also be soldered on the rf pad. the following references have been certified for mounti ng on the Q2686 wireless cpu ? : ? rg178 ? rg316 5.6 rf board-to-board connector the supplier for the imp connector is radiall ( http://www.radiall.com ), with the following reference: ? r107 064 900. 5.7 gsm antenna gsm antennas and support for antenna adaptation can be obtained from manufacturers such as: ? allgon ( http://www.allgon.com ) ? irschmann ( http://www.hirschmann.com/ )
Q2686 wireless cpu ? design guidelines confidential ? page: 77 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 6 design guidelines the purpose of the following paragraphs is to give design guidelines. 6.1 hardware and rf 6.1.1 emc recommendations the emc tests must be performed on th e application as soon as possible to detect any potential problems. when designing, special attention should be paid to: ? possible spurious emission radiated by the application to the rf receiver in the receiver band ? esd protection is mandatory on all signals which have external accessibility (typically human acce ssibility). see Q2686 wireless cpu ? customer design guidelin es wm_prj_Q2686_pts_003 [10] for esd protection samples. o typically, esd protection is mandatory for the: ? sim (if accessible from outside) ? serial link ? emc protection on audio input/output (filters against 900mhz emissions) ? biasing of the microphone inputs ? length of the sim interfac e lines (preferably <10cm) ? ground plane: wavecom recommend s a common ground plane for analog/digital/rf grounds. ? a metallic case or plastic casing wi th conductive paint are recommended note : the wireless cpu ? does not include any protection against over-voltage.
Q2686 wireless cpu ? design guidelines confidential ? page: 78 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 6.1.2 power supply the power supply is one of the key issu es in the design of a gsm terminal. a weak power supply design co uld, in particular, affect: ? emc performance ? the emission spectrum ? the phase error and frequency error warning: careful attention should be paid to: ? the quality of the power supply: low ripple, pfm or psm systems should be avoided (pwm converter preferred). ? capacity to deliver high current pe aks in a short time (pulsed radio emission).
Q2686 wireless cpu ? design guidelines confidential ? page: 79 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 6.1.3 layout requirement figure 16: layout requirement
Q2686 wireless cpu ? design guidelines confidential ? page: 80 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 6.1.4 antenna warning: wavecom strongly recommends to work with an antenna manufacturer either to develop an antenna adapted to the application or to adapt an existing solution to the application. both the mechanical and electrical antenna adaptation is one of the key issues in the design of the gsm terminal. 6.2 mechanical integration attention should be paid to: ? antenna cable integration (ben ding, length, position, etc) ? leads of the wireless cpu ? to be soldered to the ground plane 6.3 operating system upgrade the Q2686 wireless cpu ? operating system is stored in flash memory and can easily be upgraded. important: in order to follow regular changes in the gprs standard and to offer a state-of- the-art operating system, wavecom recommends that the application designed around a wireless cpu ? (or wireless cpu ? based product) allow easy operating system upgrades on the wireless cpu ? via the standard x-modem protocol. therefore, the application shal l either allow a direct access to the wireless cpu ? serial link through an extern al connector or implement any mechanism allowing the wireless cpu ? operating system to be downloaded via x-modem. the operating system file can be do wnloaded to the modem using the x- modem protocol. the at+wdwl command allows the download process to be launched (see the description in the at command user guide [7]). the serial signals required to proc eed with x-modem downloading are: rx, tx, rts, cts and gnd. the operating system file can also be downloaded to the modem using the dota (download over the air) feature. th is feature is available with the open at ? interface. for more details, please, refer to the open at ? documentation 1.1.1.
Q2686 wireless cpu ? appendix confidential ? page: 81 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 7 appendix 7.1 standards and recommendations gsm etsi, 3gpp, gcf and naprd03 re commendations for phase ii & fcc. specification reference title 3gpp ts 45.005 v5.5.0 (2002-08) release 5 technical specification group gsm/edge. radio access network; radio transmission and reception gsm 02.07 v8.0.0 (1999-07) digital cellular telecommunica tions system (phase 2+); mobile stations (ms) features (gsm 02.07 version 8.0.0 release 1999) gsm 02.60 v8.1.0 (1999-07) digital cellular telecommunica tions system (phase 2+); general packet radio service (gprs); service description, stage 1 (gsm 02.60 version 8.1.0 release 1999) gsm 03.60 v7.9.0 (2002-09) technical specification group services and system aspects; digital cellular telecommunica tions system (phase 2+); general packet radio service (gprs); service description; stage 2 (release 1998) 3gpp ts 43.064 v5.0.0 (2002-04) technical specification group geran; digital cellular telecommunications system (phase 2+); general packet radio service (gprs); overall description of the gprs radio interface; stage 2 (release 5) 3gpp ts 03.22 v8.7.0 (2002-08) technical specification group gsm/edge. radio access network; functions related to mobile station (ms) in idle mode and group receive mode; (release 1999) 3gpp ts 03.40 v7.5.0 (2001-12) technical specification group terminals; technical realization of the short message service (sms) (release 1998) 3gpp ts 03.41 v7.4.0 (2000-09) technical specification group terminals; technical realization of cell broadcast service (cbs) (release 1998) etsi en 300 903 v8.1.1 (2000-11) digital cellular telecommunica tions system (phase 2+); transmission planning aspect s of the speech service in the gsm public land mobile network (plmn) system (gsm 03.50 version 8.1.1 release 1999)
Q2686 wireless cpu ? appendix confidential ? page: 82 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 specification reference title 3gpp ts 04.06 v8.2.1 (2002-05) technical specification group gsm/edge radio access network; mobile station - base station system (ms - bss) interface; data link (dl) layer specification (release 1999) 3gpp ts 04.08 v7.18.0 (2002-09) technical specification group core network; digital cellular telecommunica tions system (phase 2+); mobile radio interface laye r 3 specification (release 1998) 3gpp ts 04.10 v7.1.0 (2001-12) technical specification group core networks; mobile radio interface laye r 3 supplementary services specification; general aspects (release 1998) 3gpp ts 04.11 v7.1.0 (2000-09) technical specification group core network; digital cellular telecommunications system (phase 2+); point-to-point (pp) short message service (sms) support on mobile radio interface (release 1998) 3gpp ts 45.005 v5.5.0 (2002-08) technical specification group gsm/edge. radio access network; radio transmission and reception (release 5) 3gpp ts 45.008 v5.8.0 (2002-08) technical specification group gsm/edge radio access network; radio subsystem link control (release 5) 3gpp ts 45.010 v5.1.0 (2002-08) technical specification group gsm/edge radio access network; radio subsystem synchronization (release 5) 3gpp ts 46.010 v5.0.0 (2002-06) technical specification group services and system aspects; full rate speech; transcoding (release 5) 3gpp ts 46.011 v5.0.0 (2002-06) technical specification group services and system aspects; full rate speech; substitution and muting of lost frames for full rate speech channels (release 5) 3gpp ts 46.012 v5.0.0 (2002-06) technical specification group services and system aspects; full rate speech; comfort noise aspect for full rate speech traffic channels (release 5)
Q2686 wireless cpu ? appendix confidential ? page: 83 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 specification reference title 3gpp ts 46.031 v5.0.0 (2002-06) technical specification group services and system aspects; full rate speech; discontinu ous transmission (dtx) for full rate speech traffic channels (release 5) 3gpp ts 46.032 v5.0.0 (2002-06) technical specification group services and system aspects; full rate speech; voice activity detector (vad) for full rate speech traffic channels (release 5) ts 100 913v8.0.0 (1999-08) digital cellular telecommunica tions system (phase 2+); general on terminal adaptation functions (taf) for mobile stations (ms) (gsm 07.01 version 8.0.0 release 1999) gsm 09.07 v8.0.0 (1999-08) digital cellular telecommunica tions system (phase 2+); general requirements on interworking between the public land mobile network (plmn) and the integrated services digital network (isdn) or public switched telephone network (pstn) (gsm 09.07 version 8.0.0 release 1999) 3gpp ts 51.010-1 v5.0.0 (2002-09) technical specification group gsm/edge ; radio access network ;digital cellular telecommunications system (phase 2+);mobile station (ms) conformance specification; part 1: conformance specification (release 5) 3gpp ts 51.011 v5.0.0 (2001-12) technical specification group terminals; specification of the subscriber identity module - mobile equipment (sim - me) interface (release 5) ets 300 641 (1998-03) digital cellular telecommuni cations system (phase 2); specification of the 3 volt subscriber identity module - mobile equipment (sim-me) interface (gsm 11.12 version 4.3.1) gcf-cc v3.7.1 (2002-08) global certificat ion forum ? certification criteria naprd03 v2.6.0 (2002-06) north america permanent reference document for ptcrb tests the Q2686 wireless cpu ? connected on a development kit board application is certified to be in accordance with th e following rules and regulations of the federal communications commission (fcc). power listed on the gant is conducted for part 22 and conducted for part 24
Q2686 wireless cpu ? appendix confidential ? page: 84 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 this device contains gsm, gprs class 10 functions in the 900 and 1800mhz band, which are not operational in u.s. territories. this device is to be used only for mo bile and fixed applications. the antenna(s) used for this transmitter must be insta lled to provide a separation distance of at least 20cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. users and installers must be provided wi th antenna installation instructions and transmitter operating conditions fo r satisfying rf exposure compliance. antennas used for this oem module mu st not exceed 3.3dbi gain for pcs 1900 mhz and 6dbd(8.14dbi ) gsm 850 mhz for mobile and fixed operating configurations. this device is approved as a module to be installed in other devices. installed in other portable devices, the exposure conditions require a separate equipment authorization. the license module had a fcc id label on the module itself. the fcc id label must be visible through a window or it must be visible when an access panel, door or cover is easily removed. if not, a second label must be placed on the outside of the device that contains the following text: contains fcc id: o9eQ2686 this device complies with part 15 of th e fcc rules. operation is subject to the following two conditions: (1) this device may not cause harmful interference, (2) this device must accept any interference received, including interference that may cause undesired operation. important: manufacturers of mobile or fixed devices incorporating Q2686 wireless cpu ? are advised to ? clarify any regula tory questions, ? have their completed product tested, ? have product approved for fcc compliance, and ? include instructions according to above mentioned rf exposure statements in end product user manual. please note that changes or modifications not expressly approved by the party responsible for compliance could void the user?s authority to operate the equipment.
Q2686 wireless cpu ? appendix confidential ? page: 85 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 7.2 safety recommendations (for information only) important for the efficient and safe operation of your gsm application based on Q2686 wireless cpu ? please read this information carefully 7.2.1 rf safety 7.2.1.1 general your gsm terminal is based on the gsm standard for cellular technology. the gsm standard is spread all over the worl d. it covers europe, asia and some parts of america and africa. this is the most used telecommunication standard. your gsm terminal is actually a low po wer radio transmitter and receiver. it sends out as well as receives radio frequency energy. when you use your gsm application, the cellular system which handles your calls controls both the radio frequency and the power level of your cellular modem. 7.2.1.2 exposure to rf energy there has been some public concern on possible health effects of using gsm terminals. although research on health effects from rf energy has focused on the current rf technology for many ye ars, scientists have begun research regarding newer radio technologies, such as gsm. after existing research had been reviewed, and after compliance to all applicable safety standards had been tested, it has been concluded that the product was fitted for use. if you are concerned about exposure to rf energy there are things you can do to minimize exposure. obviously, limiting the duration of your calls will reduce your exposure to rf energy. in addi tion, you can reduce rf exposure by operating your cellular terminal efficien tly by following the guidelines below. 7.2.1.3 efficient terminal operation for your gsm terminal to operate at th e lowest power level, consistent with satisfactory call quality: if your terminal has an extendable ante nna, extend it fully. some models allow you to place a call with the antenna retracted. however your gsm terminal operates more efficiently with the antenna when it is fully extended. do not hold the antenna when the terminal is "in use". holding the antenna affects call quality and may cause the modem to operate at a higher power level than needed.
Q2686 wireless cpu ? appendix confidential ? page: 86 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 7.2.1.4 antenna care and replacement do not use the gsm terminal with a damaged antenna. if a damaged antenna comes into contact with the skin, a mi nor burn may result. replace a damaged antenna immediately. you may repair an tenna to yourself by following the instructions provided to you. if so, use only a manufacturer-approved antenna. otherwise, have your antenna repaired by a qualified technician. buy or replace the antenna only from the approved suppliers list. using of unauthorized antennas, modifications or attachments could damage the terminal and may violate local rf emis sion regulations or invalidate type approval. 7.2.2 general safety 7.2.2.1 driving check the laws and the regu lations regarding the use of cellular devices in the area where you have to drive as you always have to comply with them. when using your gsm terminal while driving, please: ? give full attention to driving, ? pull-off from the road and park before making or answering a call if driving conditions so require. 7.2.2.2 electronic devices most electronic equipment, for exampl e in hospitals and motor vehicles is shielded from rf energy. however, rf energy may affect some improperly shielded electronic equipment. 7.2.2.3 vehicle electronic equipment check your vehicle manufacturer represen tative to determine if any on-board electronic equipment is adequately shielded from rf energy. 7.2.2.4 medical electronic equipment consult the manufacturer of any personal medical devices (such as pacemakers, hearing aids, etc) to determine if they are adequately shielded from external rf energy. turn your terminal off in health care facilities when any regulations posted in the area instruct you to do so. hospitals or health care facilities may be using rf monitoring equipment.
Q2686 wireless cpu ? appendix confidential ? page: 87 / 87 this document is the sole and exclusive property of wavecom. not to be distributed or divulged without prior written agreement. wm_prj_Q2686_pts_001-007 march 6, 2007 7.2.2.5 aircraft turn your terminal off before boarding any aircraft. ? use it on the ground only with crew permission. ? do not use it in the air. to prevent possible interference with aircraft systems, federal aviation administration (faa) regu lations require you should have prior permission from a crew member to use your terminal while the aircraft is on the ground. in order to prevent interference with cellular systems, local rf regulations prohibit using your modem while airborne. 7.2.2.6 children do not allow children to play with your gsm terminal. it is not a toy. children could hurt themselves or others (by poki ng themselves or others in the eye with the antenna, for example). childr en could damage the modem, or make calls that increase your modem bills. 7.2.2.7 blasting areas to avoid interfering with blasting operations, turn your unit off when you are in a "blasting area" or in areas posted : "turn off two-way radio". construction crew often uses remote control rf devices to set off explosives . 7.2.2.8 potentially explosive atmospheres turn your terminal off when in any area with a potentially explosive atmosphere. though it is rare, but your modem or its accessories could generate sparks. sparks in such areas co uld cause an explosion or fire resulting in bodily injuries or even death. areas with a potentially explosive atmosp here are often, but not always, clearly marked. they include fuelling areas such as petrol stations; below decks on boats; fuel or chemical tr ansfer or storage faciliti es; and areas where the air contains chemicals or particles, such as grain, dust, or metal powders. do not transport or store flammable gas, liquid, or explosives, in the compartment of your vehicle which contains your terminal or accessories. before using your terminal in a vehi cle powered by liquefied petroleum gas (such as propane or butane) ensure that the vehicle complies with the relevant fire and safety regulations of the country in which the vehicle is used.
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