MG815+ Module Hardware Design User Manual
Contents
1. Power design The module is powered by V MAIN and the voltage feature is below Table 4 1 Voltage features Min Max DI is a LDO with low valid control making V MAIN supplies power to module through adjusting land R41 at 3 9V Modules have very high requirements on power and ground processing signals must be filtered Power ripple needs to be controlled under 50Mv Do not supply power to any other part of system otherwise RF performance will be compromised Finally select the power cables with at least 40mil traces during the layout and keep the integrality of ground line ZTEmX MG815 Module Hardware Design User Manual Power ON The module will be turned off after power on normally To turn on the module firstly put RESET at high level and then provide a 1500 2000mS low level pulse to ON OFF PIN Reset needs to connect an open collector or open drain gate Power OFF To turn off the module firstly provide a 1500 2000mS low level pulse to ON OFF PIN after 5s or 6s and put RESET at low level Reset You could turn off the module firstly and then turn it on to reset the module ON OFF timing figure is as follows Figure 4 2 ON OFF timing offstate timing on state off timing off state m mr mE ccce MCU RESET N Amm MCU ONOFF b te ta te Table 4 2 ON OFF timing features ta tc ta te 20mS 10mS 28 28 6S2. MG815 Module Hardware Design User Manual MG815 Module Hardware Design User Manual Version V1 4 ZTE Corporation This manual is also applicable for ME3000 ME3006 MG615 MG415 MG416 modules ITEY MG815 Module Hardware Design User Manual Preface Summary This manual is applicable for ME3000 ME3006 MG815 MG615 MG415 MG416 modules This manual takes MG815 and ME3000 as examples to instruct the users how to design the hardware and how to quickly and conveniently design different kinds of wireless terminals based on the modules Target Readers System designing engineers Mechanical engineers Hardware engineers Software engineers Testengineers Brief Introduction Chapter Contents General Description Introduces technical specs of the modules and relevant documents and abbreviations 2 Product Introduction to Introduces the principle charts and relevant standards of both MG815 and MG815 ME3000 modules 3 PIN Definitions Introduces the name and function of PIN 4 Hardware Interfaces and Introduces the hardware interface designing of the modules design reference 5 Mechanical Introduces the module s appearance assembly line main board PCB layout and fixing 6 Peripherals components Introduces the peripherals components Update History V1 4 June 25 2007 This is the fifth time to release the new version The update contents include 1
3. USB UART GSM module number ART b Cep To USB supports U ut OE TXD2 USB DATA 1 RXD2 USB VMO RTS2 USB VPO CTS2 Transceiver available at low level indicating Call indi Draw down internal LED SMS LED A A will be turned on at high level with external driver Draw down internal LED SIG LED not USB CDMA Transceiver U module supports both UART and USB but Transceiver same to software should be USB serial changed with Transceiver port 1 different interface interface Pin 5 and pin 7 are will be turned on at high level with external driver Turn on LED off Searching for network LED flashes and it lasts for Signal indicator about 50ms when it is on and the time is flexible when it is off Idle LED blinks per 100ms Traffic call data LED blinks per 500ms ZTETX MG815 Module Hardware Design User Manual ON OFF switch control Reset RESET Reset signal Power V_MAIN Main power of module input Power V_MAIN Main power of module input Power V_MAIN Main power of module power V MSM Digital power PIN No Signal Name power op G 2 GN 16 6 Draw up internal Low level valid For details please refer to section 4 2 Power and Reset Low level valid Need to connect an open collector or an open drain switch For details please refer to section 4 2 Power and Reset MG815 module has a voltage out
4. 1 4 Modifications in Technical parameters 1 2 Modifications in Relevant Documents 4 2 Power and Reset Add ON OFF timing 5 1 Change the modules weight a more accurate value V13 31 2007 This is the fourth time to release the new version The update contents include 4 2 Modifications in Section Power and Reset 4 4 Change user ID card interface to SIM UIM card interface 4 5 Audio Interface Deleted x05 x06 x07 in the picture and just kept receiver handset and line out Change CDMA and GSM audio interface design ITEY MG815 Module Hardware Design User Manual 4 6 Change RF interface as antenna interface 5 1 Appearance Add ME3000 s appearance 5 3 Change PCB Layout 6 Change Key components as peripherals V1 2 April 24 2007 This is the third time to release the version The update contents include 6 4 Audio Interface Add Auto power on off audio interface design V1 1 CApril 13 2007 The update contents include 5 PIN definitions Change fig5 1 PIN Diagram 6 Hardware Interface and Reference Design Change R12 impedance in Fig6 1 as 1K 6 4 Audio Interface Add the design of audio interface Add section 6 6 Module Layout V1 0 Feb 09 2007 This is the first to formally release the document ITEY MG815 Module Hardware Design User Manual Table of Contents 1 General Deserpton 8 1 1 Technical Spectbeaton eene enne nennen 8 1 1 1 Mod
5. MSM There is a voltage output pin with current adjuster which can be used to supply external power to the board The voltage of this pin and the voltage of baseband processor memory come from the same voltage adjuster The voltage output is available only when the module is on The normal output voltage is 2 85V and the user should absorb the current from this pin as little as possible less than 10mA Generally it is recommended to use this pin to match the level When the module is off the output voltage for this pin remains unchanged but the impedance is rather high Therefore it s not recommended to use this pin for other purposes Other Advice In order to make sure the data is saved safely please don t cut off the power when the module is on It s strongly recommended to add battery or soft switch like the power key on the mobile phone 4 3 Serial Port The module provides 2 UART transceivers and its logic functions conform to RS 232 interface standard These ITEY MG815 Module Hardware Design User Manual two UART could be used as serial port data interfaces to transmit data provide test and debug channel and download the software for upgrade Refer to Fig 4 3 when UART 1 is used as MCU Figure 4 3 UART to MCU interface MODULE TO MCU INTERFACE MCU NET ucc MCU TXD Dr R 12 GND e S It is noted that the interface level of UART provided by the module shall conform to CMOS level while not meet the req
6. same as the handset s 4 6 Antenna Interface The module provides two types of RF connector Extended jointing connector testing socket PCB jointing connector is used to connect module with antenna by 50 ohm RF shielding cable to cut down the cost But it s not a complete way to shield EMI and RF signal quality may be trivially affected So if you decide to use this method intense radiation must keep far away from PCB jointing connector At the same time you must ensure that core line of RF shielding cable has been jointed to PCB jointing connector and the shielding metal wire netting on the RF cable has been jointed to GND of module According to the figure below the grounding part must be jointed firmly otherwise the core cable may be ruptured caused by shielding cable shaking Figure 4 7 Antenna Interface Antenna test socket is used for calibration and testing It connects module with antenna conveniently by appropriative 50 ohm socket to SMA connecting cable The touch impedance of this socket is so tiny and shielding characteristics are excellent The impedance of antenna test socket is 50 ohm its type is MM9329 2700B please refer to socket manual provided by supplier to choose relative plugs This is the antenna cable interface 23 ITEY MG815 Module Hardware Design User Manual Figure 4 8 RF cable interface Proper measures should be taken to reduce the access loss of effective bands and good shiel
7. 23 24 24 UMSN 25 25 25 25 ON OFF QPOF Y 1051 UB 024 AUXOP ef _ 127 28 eB SMS_LED AUXON 28 5 34 SIG LED 31 31 se 39 SPK IN MODULE SE SE 33 33 34 45 SPK_ IP EAR_AN_DE 32 35 EAR_DE TIC IN 37 38 MIC 2N INTERF ACE 39 9 4 4n M W SQPOF 2 40 S1 VB Refer to table 3 1 3 2 below for PIN definitions Table 3 1 PIN definitions of 40 PIN connector MIC 1 Anode MIC 1 Cathode MIC 1 is the default Receiver 1 Anode configuration for audio I O LEE LED ESP lO Receiver 1 Cathode when power on generally MIC 2 Anode MIC 1 is used for handset I MIC 2 Cathode MIC 2 for earphone I Receiver 2 Anode draw up internal low level Earphone button test valid draw down internal low Earphone inserting test level valid ae po LEN E Ca ES o E EAR AN DE 35 T gt Line output Cathode Clear to send Request to send I Receive data EE 1 high level when I ZTETX MG815 Module Hardware Design User Manual initialized producing a periodic signal 100ms low 5 9s high when received a ring indicating signal Back to high level when the ring indicating signal is terminated DSR lO Module is ready low level valid Era c User circuit is User circuit is ready low level valid level valid E DAT Data cable UIM card p CARD E ia an Clock wire 2 carp msr Signal
8. AND PRATURES REENEN 8 TABLE L 3 INTERFACES NEE EE 9 TABLE 1 4 TECHNICAL PARAMETERS OF MCNA3U enne 9 TABLE 3 1 PIN DEFINITIONS OF 40 PIN 14 TABLE 3 2 PIN DEFINITIONS OF 10 PIN CONNECTOR cesses nennen enne enne nennen nns enne nentes en 16 TABEE 4d 1 ER 18 TABLE 4 2 ON OFF TIMING 2 2 2 224 enne enne inen een nnne enne nnns nenne nentes entrent nentes enne 19 TABLE 4 3 USB AND UART 2 PIN SN AND NAME 20 TABLE 6 1 PERIPHERALS COMPONENT Siri EEN 27 7 MG815 Module Hardware Design User Manual 1 General Description This manual is applicable for ME3000 ME3006 MG815 MG615 MG415 MG416 modules Except for antenna design the hardware mechanical design is completely compatible with the applications of CDMA 800M Sec800MHz 450M and GSM GPRS All above modules have voice SMS and data service function which could be used for data transmission wireless POS security lottery intelligent metering wireless fax small exchangers tobacco network campus network wireless AD wireless media medical surveillance relay station surveillance railway terminal intelligent home appliances vehicle mounted surveillance etc Taking MG815 and ME3000 module as examples this manual describes the module s logic structure hardware interface and main functions and provides referen
9. IGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU ITEY MG815 Module Hardware Design User Manual Table of figures RE 2 1 MG8 ee 12 RE2 2MB2000 Oe EE 12 A A A A A A EEEE 14 RE 4 1 POWER AND RESET CIRCUIT DESIGN REFERENCE 18 RE 4 2 ON OFF TIMING ROW HU RR HEB ER EE AER 19 RE4 3 UART TOMCU INTERFACE E 20 RE4 4UART I SIGNAL DIAGRAM see ee e Ee EENEG 20 RE 4 5 SIM UIM CARD INTERFACE DESIGN REFERENCE nnns 21 RE 4 6 AUDIO INTERFACE CIRCUIT DESIGN REFERENCE een 22 RE4 7 ANTENNA INTERFACE rt Qr D ERO ERO Qr FO ea RITE LS ERN 23 RE4 8 RF CABLE INTERFACE cs rnit HER EUROPEE ED US IDEE DEDE EATEN YER IL I UR 24 RE 5 1 MODULE APPEARANCE OF MG815 0 cccessessscessscessecesseeeesceesseeessaceeseeesseesenesesneensnecesceseaneceseeenseeseeeeesneoes 24 RE 5 2 MODULE APPEARANCE OF 25 RE 5 3 MODULE ASSEMBLY BOTTOM VIEW ener tnter nnne rennen nnne nnne 25 RE 5 4 MAIN BOARD PCB LAYOUT TOP VIEW Listener nnne nnne nennen nenne nnne nennen 25 RE 3 5 FIXING METHOD EE 26 ITEY MG815 Module Hardware Design User Manual TABLE l 1 MODULE SPECIFICATION E R Hg T eye 8 TABLE 1 2 MAIN FUNCTIONS
10. M MG815 Module Hardware Design User Manual 2 Brief Introduction to MG815 2 1 Brief Introduction to MG815 Please refer to Figure 2 1 for the Technical parameters of MG815 Figure 2 1 MG815 principle Antenna na GND 4 connector 10 pins connector Communication Baseband un a u e CD 914 Interface 40 pins connector SIM UART POWER AUDIO 2 2 Brief Introduction to ME3000 Please refer to Figure 2 2 for the Technical parameters of ME3000 Figure 2 2 ME3000 principle ITEY MG815 Module Hardware Design User Manual Antenna GND 4 connector 10 pins connector PA and Switch Communication Baseband LO 3 e 5 cd T 21 5 L c e Interface 40 pins connector SIM UART POWER AUDIO ITEY MG815 Module Hardware Design User Manual 3 PIN definitions The main connector of MG815 or ME3000 is 40 PIN connector and 10 PIN connector The distance between two PINS is 1 27mm Refer to the figure below Figure 3 1 PIN xe USB_OE TXD2 1 1 als CORD RST USB DOTA EXD2 3 3 al 4 CARD_DATA GND 1 USB UMO RIS2 5 5 CARD_CLK GIN 2 USH UPO CTS2 7 e 8 VU_CARD GND 3 USB_ SUS 9 18 GND 4 RXD ii 12 L 7CIS 5 TROD 13 13 14114 7375 5 RI 15 15 16 _16 GE R T 17 17 18 18 D 8 9 MAIN 19 2 2 9 U_MAIN el 21 22 V MAIN 10 GND
11. cal parameters of MC8530 Item Description CDMA GSM Working temperature 30 C 75 C 20 80 Input voltage 3 3V 4 25V Maximum current 560mA 104dBm 500mA 102 dBm Idle current 5mA 75 dBm 10mA 75 dBm Call current 230mA 75 dBm 150mA 75 dBm sensitivity 104 dBm 102dBm Tx power 23dBm 30dBm Class IIT GSM850 EGSM900 Class4 2W GSM1800 PCS1900 Class1 1 W Frequency range 800MHz Tx 824 849 MHz Rx 869 894 MHz GSM850 Tx 824 849 MHz Rx 869 894MHz Sec800MHz Tx 806 821 MHz Rx 851 DL866 MHz EGSM900 Tx 880 915 MHz Rx 925 960MHz 450MHz A Et Tx 450 460 MHz Rx 460 470 MHz Preferred channel 160 210 260 DCS1800 Tx 1710 1785MHz Rx 1805 1880MHz 450MHz C Et Tx 450 460 MHz Rx 460 470 MHz Preferred channel 47 97 147 PCS1900 Tx 1850 1910MHz Rx 1930 1990MHz 7 MG815 Module Hardware Design User Manual 1 2 Relevant Documents ZTE Dragon tooth wireless module series product catalog AT Command Manual for ZTE Corporation s MG815 Modules AT Command Manual for ZTE Corporation s ME3000 Modules ZTE MG815 Module Development Board User Guide FAQ for ZTE Corporation s CDMA Modules FAQ for ZTE Corporation s GSM GPRS Modules Test References of ZTE Corporation s CDMA Wireless Modules 1 3 Abbreviations ZTETX MG815 Module Hardware Design User Manual MCU MMI Ms RAM SRAM TA TE U
12. ce design for the hardware and mechanics 1 1 Technical Specification 1 1 1 Module Specification Please refer to table 1 1 for the specifications of 5 types of modules ME3000 MG815 MG615 MG415 and MG416 Table 1 1 module specification Module Models Frequency MHz ME3000 GSM GPRS Quad Band GSM 850 EGSM 900 DCS 1800 PCS 1900 MG8154 CDMA 2000 1X 800MHz MG615 CDMA 2000 1X Sec800MHz MG415 CDMA 2000 1X 450MHz block A MG416 CDMA 2000 1X 450MHz block C Remarks The modules are compatible on hardware and mechanical design except for frequency Below is just an example for MG amp 15 and ME3000 modules 1 1 2 Main Functions and Features Please refer to Table 1 2 for the Main Functions and Features Table 1 2 Main functions and features Description CDMA GSM EVRC 13kQCELP High quality voice Support TEXT Support TEXT and PDU Y Support internal TCP IP stack Y Support virtual keep on line VKL CDMA maximum up down link data rate 153 6kbps GSM maximum up link data rate 42 8kbps maximum down link data rate 85 6kbps ZTEDH MG815 Module Hardware Design User Manual 1 1 3 Interfaces Please refer to Table 1 3 for the Interfaces Table 1 3 Interfaces of the modules UART interface Download software to update Data communication Maximum data rate 230 4kbps through the port 1 1 4 Technical parameters Please refer to Table 1 4 for the Technical parameters of MC8530 Table 1 4 Techni
13. ding should be established between external antenna and RF connector Besides external RF cables should be kept far away from all interference sources such as high speed digital signal or switch power supply According to mobile station standard stationary wave ratio of antenna should be between1 1 to 1 5 and input impedance is 50 ohm Different environments may have different requirements on the antenna s gain Generally the larger gain in the band and smaller outside the band the better performance the antenna has Isolation degree among ports must more than 30dB when multi ports antenna is used For example between two different polarized ports on dual polarized antenna two different frequency ports on dual frequency antenna or among four ports on dual polarized dual frequency antenna isolation degree should be more than 30dB 5 Mechanical 5 1 Appearance Figure 5 1 module appearance of MG815 Dimensions 44 0 mm length x 28 0mm width x 7 6mm height Weight 8 5g 24 ITEY MG815 Module Hardware Design User Manual Figure 5 2 module appearance of ME3000 Dimensions 44 0 mm length x 28 0mm width x 7 6mm height Weight 8g 5 2 Module Assembly Line Figure 5 3 Module assembly line bottom view 5 3 Main board PCB layout Figure 5 4 main board PCB layout top view 25 ITEY MG815 Module Hardware Design User Manual 1 65 EN EE e M 10 0 60 z a 1227 11 80 ees Ee
14. hes 52dB The level of MIC 1P PIN is about 1 8V Note if other kind of audio input method is adopted the input signal should be within 2V If the signal voltage is lower than 2V then the pre amplifier should be added If the signal voltage is higher than 2V then network attenuation should be added Design of audio interface on the receiver Select the microphone with the sensitivity lower than 52dB since the output power for SPK 2 is 8 8mW and the max gain in MIC 2 reaches 52dB The level of MIC 2P PIN is about 1 8V The receiver s design is just the same as the handset s GSM GPRS module audio interface is designed as below Design of audio interface on the receiver Select the microphone with the sensitivity lower than 51 5dB since the output impedance for SPK_1 is 32 ohm and the max gain in 1 reaches 51 5dB The level of MIC 1P PIN is about 2 5V Note if other kind of audio input method is adopted the input signal should be within 0 5V If the signal voltage is lower than 0 5V then the pre amplifier should be added If the signal voltage is higher than 0 5V 22 ITEY MG815 Module Hardware Design User Manual then network attenuation should be added Design of audio interface on the earphone Select the microphone with the sensitivity lower than 51 5dB since the output impedance for SPK 2 is 32 ohm and the max gain in MIC 2 reaches 51 5dB The level of MIC 2P PIN is about 2 5V The receiver s design is just the
15. nts SIM UIM card PCB circuit should be laid closely around the module as possible as you can to avoid the interference of reading writing from other sources 4 5 Audio Interface The module provides audio input and output through MIC 2P There are 2 speaker interfaces 2 microphone interfaces and 1 line output Only one pair I O works at the same time 21 7 MG815 Module Hardware Design User Manual Figure 4 6 audio interface circuit design reference MUDIO INTERFACE EE L H Microphone The system connector provides two microphone interfaces MIC 1 and MIC 2 which are both differential interface They could be also used as single ended input for example earphone It s recommended to use differential mode to reduce the noises These two input are coupled in AC domain and added a 1 8V offset voltage inside and they should directly connect with the receiver Speaker The system connector provides two speakers SPK 1 amp SPK 2 The former is differential interface and the latter is single ended interface usually used for earphone They both have 32 ohm impedance Lineoutput The MIC 2P connector provides a differential line output via AUXOP and AOXON The impedance is 8 ohm CDMA module audio interface is designed as below Design of audio interface on the handset Select the microphone with the sensitivity lower than 52dB since the output power for SPK_1 is 35mW and the max gain in MIC 1 reac
16. put pin with current limited adjuster It can be used to supply external circuit on main board the voltage of this pin baseband processor and storage come from the same voltage adjuster voltage output is 2 85V when power on Users should distribute current as little as possible from this pin less than 10mA Generally we suggest this pin is used to pull up chips pin only when it needs level match Used for module inside need to be suspended Used for module inside need to be suspended ZTEOS MG815 Module Hardware Design User Manual Used for module inside need to be suspended ZTEmX MG815 Module Hardware Design User Manual 4 Hardware Interfaces and Design Reference 4 Summary This section describes the function interfaces and usage of MG815 modules in details and provides the designing sample Power and Reset Interface Serial Port SIM UIM Card Interface Audio Interface Antenna Interface Remarks n the system the module layout should be far away from high speed circuit switch power power transformer large power inductor or single chip microcomputer e clock circuit 4 2 Power and Reset Figure 4 1 power and reset circuit design reference POWER INTERFAC e DES P gt IEN our V LMAIN E ye 3 3 SENSE Anz 85 78 Sanla e MIC2S382u0 GND Ril VLMAIN e 5 GG mr ON OFF EA 4 MCU_RESET Rie gt
17. scher I i l LL 27 17 4 8 4 HH I 1 1 40 5 4 Fixing Method The fixing metal sheet is made of stainless steel and there are two fixing methods jointing or inserting bolt Refer to Fig 5 5 for product specification Figure 5 5 fixing method 26 MG815 Module Hardware Design User Manual 30 3T MM 6 Peripherals components Table 6 1 Peripherals components Sv supplier weis MICREL www micrel com D2 SEMTECH www semtech com ON Www onsemi com D3 PERICOM WWW pericom com IDT www idt com AMPHENOL www amphenol com 27
18. uirements specified by RS 232 interface standard If it is required to connect with the devices through standard RS 232 interface during the applications second development designers must add transfer chip into their own designing and use UART pins according to CMOS interface designing requirements It s recommended to use 3V for UART level MCU BUT is the reset button It s specially noted that users need to extend UART 1 or UART 2 to update software if they d like to connect module to DTE in the design phase Refer to Fig 4 4 for UART 1 signal diagram Figure 4 4 UART 1 Signal Diagram CUSTOMER BOARD MG815 MODULE UARTI The corresponding PINS of UART 2 are for both UART and USB GSM modules support UADT but not USB while CDMA modules support USB and UART both Please refer to table 4 3 for details Table 4 3 USB and UART 2 Pin SN and Name 7 MG815 Module Hardware Design User Manual USB YMO RIS me USE YMO 4 4 SIM UIM Card Interface Modules support 3V SIM UIM card SIM UIM terminal includes 4 pins V CARD is used to supply SIM UIM card It s strongly recommended to add ESD to protect SIM UIM card in hostile environments D2 in the following layout is for ESD Figure 4 5 SIM UIM card interface design reference CARD COUNTER ACE x23 CARD DATA NOTE A 10k resistor is required for CARD DATA pin to be draw up to V CARD pin because there are different SIM UIM cards with quite different output curre
19. ule SpeeiftCatioti eege ces epe eR eae 8 1 1 2 Mam Functions and Feats eere re c en EIS ER 8 1 1 3 9 1 1 4 Technical 9 1 2 Relevant Documents ueteres Hideto 10 L3 Abbreviations E 10 2 Brief Introduction to MOoNl t enne nne nnnn retener nerit etre nnns 12 21 Brief Introduction to MG815 i i enne enne nenne 12 2 2 Brief Introduction to ME3000 22 2 2 1 00 0000000000000000000000000000000000000000000000000000 12 3 PIN denimin erennere LLLI 14 Hardware Interfaces and Design Reference sss nnne eren nnen 4 18 eter rave o 18 4 22 Pow and CIT 18 4 3 Seral 19 44 SIM UIM Card Interface 21 4 5 Audio Ce 21 4 6 Antenna Intet ace u eibi deed e ee Eege 23 9 Mechanical 24 KO WE ele 24 5 2 Module Assembly Lme eee innen nene nennen nnn 25 9 9 Main boatd PCB layout EE 25 54 ceni 26 6 Peripherals coraponents iei UR AER e tene EES ie edic ese Zender 27 FIGU FIGU FIGU FIGU FIGU F
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