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| 1 2 | BOM | Parts List/Tune Up Info | February 22 2019 | confidential | ||||
| 1 2 | Block Diagram | Block Diagram | February 22 2019 | confidential | ||||
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| 1 2 | Operational Description | Operational Description | February 22 2019 | confidential | ||||
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| 1 2 | Users manual | Users Manual | 2.78 MiB |
M66 Hardware Design GSM/GPRS Module Series Rev. M66_Hardware_Design_V1.2 Date: 2016-07-08 www.quectel.com GSM/GPRS Module Series M66 Hardware Design Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters:
Quectel Wireless Solutions Co., Ltd. Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233 Tel: +86 21 5108 6236 Email: info@quectel.com Or our local office. For more information, please visit:
http://www.quectel.com/support/salesupport.aspx For technical support, or to report documentation errors, please visit:
http://www.quectel.com/support/techsupport.aspx Or email to: Support@quectel.com GENERAL NOTES QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION. ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. COPYRIGHT THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF QUECTEL CO., LTD. TRANSMITTING, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL OR DESIGN. Copyright Quectel Wireless Solutions Co., Ltd. 2016. All rights reserved. M66_Hardware_Design Confidential / Released 1 / 82 GSM/GPRS Module Series M66 Hardware Design About the Document History Revision Date Author Description 1.0 2014-08-07 Felix YIN Initial 1.1 2014-11-24 Felix YIN 1. Modified output power of Bluetooth 2. Modified the timing of the RFTXMON signal 3. Updated Figure 5: Reference circuit for power supply 4. Modified description of RTC and SIM card interface 5. Modified description of UART Application 6. Deleted the over-voltage automatic shutdown function 7. Modified the antenna gain in the Table 24 8. Modified the current consumption information in Section 5.3 & 5.4 1. Modified the configuration and timing of PCM Interface Added Chapter 3.11 SD Card 1.2 2016-07-08 King MA Interface Updated the description of Temperature Range M66_Hardware_Design Confidential / Released 2 / 82 GSM/GPRS Module Series M66 Hardware Design Contents About the Document ................................................................................................................................ 2 Contents .................................................................................................................................................... 3 Table Index ............................................................................................................................................... 6 Figure Index .............................................................................................................................................. 7 1 Introduction ....................................................................................................................................... 9 1.1. Safety Information ................................................................................................................. 10 2 Product Concept ............................................................................................................................. 12 2.1. General Description .............................................................................................................. 12 Key Features ......................................................................................................................... 12 2.2. 2.3. Functional Diagram ............................................................................................................... 15 Evaluation Board ................................................................................................................... 16 2.4. 3.4. 3.1. 3 Application Interface ....................................................................................................................... 17 Pin of Module ........................................................................................................................ 18 3.1.1. Pin Assignment ............................................................................................................ 18 3.1.2. Pin Description ............................................................................................................. 19 3.2. Operating Modes .................................................................................................................. 23 3.3. Power Supply ........................................................................................................................ 24 3.3.1. Power Features of Module ........................................................................................... 24 3.3.2. Decrease Supply Voltage Drop .................................................................................... 25 3.3.3. Reference Design For Power Supply ........................................................................... 26 3.3.4. Monitor Power Supply .................................................................................................. 26 Power On and Down Scenarios ............................................................................................ 27 3.4.1. Power On ..................................................................................................................... 27 3.4.2. Power Down ................................................................................................................ 29 Power Down Module Using the PWRKEY Pin ................................................. 29 Power Down Module Using AT Command ....................................................... 30 Under-voltage Automatic Shutdown ................................................................ 30 3.4.3. Restart ......................................................................................................................... 31 Power Saving ........................................................................................................................ 31 3.5.1. Minimum Functionality Mode ....................................................................................... 31 3.5.2. SLEEP Mode ............................................................................................................... 32 3.5.3. Wake Up Module From SLEEP Mode .......................................................................... 32 3.5.4. Summary of State Transition ........................................................................................ 33 RTC Backup .......................................................................................................................... 33 Serial Interfaces .................................................................................................................... 35 3.7.1. UART Port ................................................................................................................... 37 The Feature of UART Port ............................................................................... 37 The Connection of UART ................................................................................ 38 Firmware Upgrade ........................................................................................... 40 3.7.2. Debug Port................................................................................................................... 40 3.7.1.1. 3.7.1.2. 3.7.1.3. 3.4.2.1. 3.4.2.2. 3.4.2.3. 3.6. 3.7. 3.5. M66_Hardware_Design Confidential / Released 3 / 82 GSM/GPRS Module Series M66 Hardware Design 3.9. 3.8. 3.7.3. Auxiliary UART Port ..................................................................................................... 41 3.7.4. UART Application ......................................................................................................... 41 Audio Interfaces .................................................................................................................... 43 3.8.1. Decrease TDD Noise and other Noise ......................................................................... 44 3.8.2. Microphone Interfaces Design ..................................................................................... 45 3.8.3. Receiver and Speaker Interface Design ...................................................................... 46 3.8.4. Earphone Interface Design .......................................................................................... 48 3.8.5. Audio Characteristics ................................................................................................... 48 PCM Interface ....................................................................................................................... 49 3.9.1. Configuration ............................................................................................................... 49 3.9.2. Timing .......................................................................................................................... 50 3.9.3. Reference Design ........................................................................................................ 51 3.9.4. AT Command ............................................................................................................... 52 3.10. SIM Card Interface ................................................................................................................ 53 3.11. SD Card Interface ................................................................................................................. 55 3.12. ADC ...................................................................................................................................... 57 3.13. Behaviors of The RI .............................................................................................................. 58 3.14. Network Status Indication ...................................................................................................... 59 3.15. RF Transmitting Signal Indication ......................................................................................... 60 4 Antenna Interface ............................................................................................................................ 63 4.1. GSM Antenna Interface ......................................................................................................... 63 4.1.1. Reference Design ........................................................................................................ 63 4.1.2. RF Output Power ......................................................................................................... 64 4.1.3. RF Receiving Sensitivity .............................................................................................. 65 4.1.4. Operating Frequencies ................................................................................................ 65 4.1.5. RF Cable Soldering ..................................................................................................... 66 Bluetooth Antenna Interface .................................................................................................. 66 4.2. 5 Electrical, Reliability and Radio Characteristics .......................................................................... 69 5.1. Absolute Maximum Ratings .................................................................................................. 69 5.2. Operating Temperature ......................................................................................................... 69 Power Supply Ratings ........................................................................................................... 70 5.3. 5.4. Current Consumption ............................................................................................................ 71 Electro-static Discharge ........................................................................................................ 73 5.5. 6 Mechanical Dimensions.................................................................................................................. 75 6.1. Mechanical Dimensions of Module ....................................................................................... 75 Recommended Footprint ....................................................................................................... 77 6.2. Top View of the Module ......................................................................................................... 78 6.3. 6.4. Bottom View of the Module ................................................................................................... 78 7 Storage and Manufacturing ............................................................................................................ 79 Storage.................................................................................................................................. 79 Soldering ............................................................................................................................... 80 Packaging ............................................................................................................................. 81 7.1. 7.2. 7.3. M66_Hardware_Design Confidential / Released 4 / 82 GSM/GPRS Module Series M66 Hardware Design 7.3.1. Tape and Reel Packaging ............................................................................................ 81 8 Appendix A References .................................................................................................................. 83 9 Appendix B GPRS Coding Schemes ............................................................................................. 88 10 Appendix C GPRS Multi-slot Classes ............................................................................................ 92 M66_Hardware_Design Confidential / Released 5 / 82 GSM/GPRS Module Series M66 Hardware Design Table Index TABLE 1: MODULE KEY FEATURES ..................................................................................................... 13 TABLE 2: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE ............... 15 TABLE 3: IO PARAMETERS DEFINITION .............................................................................................. 19 TABLE 4: PIN DESCRIPTION ................................................................................................................. 19 TABLE 5: OVERVIEW OF OPERATING MODES ................................................................................... 23 TABLE 6: SUMMARY OF STATE TRANSITION ...................................................................................... 33 TABLE 7: LOGIC LEVELS OF THE UART INTERFACE ......................................................................... 36 TABLE 8: PIN DEFINITION OF THE UART INTERFACES ..................................................................... 36 TABLE 9: PIN DEFINITION OF AUDIO INTERFACE .............................................................................. 43 TABLE 10: TYPICAL ELECTRET MICROPHONE CHARACTERISTICS ................................................ 48 TABLE 11: TYPICAL SPEAKER CHARACTERISTICS ........................................................................... 48 TABLE 12: PIN DEFINITION OF PCM INTERFACE ............................................................................... 49 TABLE 13: CONFIGURATION ................................................................................................................ 50 TABLE 14: QPCMON COMMAND DESCRIPTION ................................................................................. 52 TABLE 15: QPCMVOL COMMAND DESCRIPTION ............................................................................... 53 TABLE 16: PIN DEFINITION OF THE SIM INTERFACE ......................................................................... 53 TABLE 17: PIN DEFINITION OF SD CARD INTERFACE ....................................................................... 55 TABLE 18: PIN NAME OF THE SD CARD AND T-FLASH (MICRO SD) CARD...................................... 56 TABLE 19: PIN DEFINITION OF THE ADC ............................................................................................. 57 TABLE 20: CHARACTERISTICS OF THE ADC ...................................................................................... 57 TABLE 21: BEHAVIORS OF THE RI ....................................................................................................... 58 TABLE 22: WORKING STATE OF THE NETLIGHT ................................................................................ 59 TABLE 23: PIN DEFINITION OF THE RFTXMON .................................................................................. 60 TABLE 24: PIN DEFINITION OF THE RF_ANT ...................................................................................... 63 TABLE 25: ANTENNA CABLE REQUIREMENTS ................................................................................... 64 TABLE 26: ANTENNA REQUIREMENTS ................................................................................................ 64 TABLE 27: THE MODULE CONDUCTED RF OUTPUT POWER ........................................................... 64 TABLE 28: THE MODULE CONDUCTED RF RECEIVING SENSITIVITY .............................................. 65 TABLE 29: THE MODULE OPERATING FREQUENCIES ...................................................................... 65 TABLE 30: PIN DEFINITION OF THE BT_ANT ...................................................................................... 67 TABLE 31: ABSOLUTE MAXIMUM RATINGS ........................................................................................ 69 TABLE 32: OPERATING TEMPERATURE .............................................................................................. 70 TABLE 33: THE MODULE POWER SUPPLY RATINGS ......................................................................... 70 TABLE 34: THE MODULE CURRENT CONSUMPTION ......................................................................... 71 TABLE 35: THE ESD ENDURANCE (TEMPERATURE: 25C, HUMIDITY: 45%) ................................... 74 TABLE 36: RELATED DOCUMENTS ...................................................................................................... 83 TABLE 37: TERMS AND ABBREVIATIONS ............................................................................................ 84 TABLE 38: DESCRIPTION OF DIFFERENT CODING SCHEMES ......................................................... 88 TABLE 39: GPRS MULTI-SLOT CLASSES ............................................................................................. 92 M66_Hardware_Design Confidential / Released 6 / 82 GSM/GPRS Module Series M66 Hardware Design Figure Index FIGURE 1: MODULE FUNCTIONAL DIAGRAM ..................................................................................... 16 FIGURE 2: PIN ASSIGNMENT ............................................................................................................... 18 FIGURE 3: VOLTAGE RIPPLE DURING TRANSMITTING ..................................................................... 25 FIGURE 4: REFERENCE CIRCUIT FOR THE VBAT INPUT .................................................................. 25 FIGURE 5: REFERENCE CIRCUIT FOR POWER SUPPLY .................................................................. 26 FIGURE 6: TURN ON THE MODULE WITH AN OPEN-COLLECTOR DRIVER ..................................... 27 FIGURE 7: TURN ON THE MODULE WITH A BUTTON ........................................................................ 28 FIGURE 8: TURN-ON TIMING ................................................................................................................ 28 FIGURE 9: TURN-OFF TIMING .............................................................................................................. 29 FIGURE 10: TIMING OF RESTARTING SYSTEM .................................................................................. 31 FIGURE 11: VRTC IS SUPPLIED BY A NON-CHARGEABLE BATTERY ............................................... 34 FIGURE 12: VRTC IS SUPPLIED BY A RECHARGEABLE BATTERY ................................................... 34 FIGURE 13: VRTC IS SUPPLIED BY A CAPACITOR ............................................................................. 35 FIGURE 14: REFERENCE DESIGN FOR FULL-FUNCTION UART ...................................................... 39 FIGURE 15: REFERENCE DESIGN FOR UART PORT ......................................................................... 39 FIGURE 16: REFERENCE DESIGN FOR UART PORT WITH HARDWARE FLOW CONTROL............ 40 FIGURE 17: REFERENCE DESIGN FOR FIRMWARE UPGRADE ....................................................... 40 FIGURE 18: REFERENCE DESIGN FOR DEBUG PORT ...................................................................... 41 FIGURE 19: REFERENCE DESIGN FOR AUXILIARY UART PORT ...................................................... 41 FIGURE 20: LEVEL MATCH DESIGN FOR 3.3V SYSTEM .................................................................... 42 FIGURE 21: SKETCH MAP FOR RS-232 INTERFACE MATCH ............................................................ 43 FIGURE 22: REFERENCE DESIGN FOR AIN ........................................................................................ 45 FIGURE 23: HANDSET INTERFACE DESIGN FOR AOUT1 .................................................................. 46 FIGURE 24: SPEAKER INTERFACE DESIGN WITH AN AMPLIFIER FOR AOUT1 .............................. 46 FIGURE 25: HANDSET INTERFACE DESIGN FOR AOUT2 .................................................................. 47 FIGURE 26: SPEAKER INTERFACE DESIGN WITH AN AMPLIFIER FOR AOUT2 .............................. 47 FIGURE 27: EARPHONE INTERFACE DESIGN .................................................................................... 48 FIGURE 28: LONG SYNCHRONIZATION DIAGRAM ............................................................................. 51 FIGURE 29: SHORT SYNCHRONIZATION DIAGRAM .......................................................................... 51 FIGURE 30: REFERENCE DESIGN FOR PCM...................................................................................... 52 FIGURE 31: REFERENCE CIRCUIT FOR SIM INTERFACE WITH THE 6-PIN SIM CARD HOLDER ... 54 FIGURE 32: REFERENCE CIRCUIT FOR MICRO SD CARD ................................................................ 56 FIGURE 33: RI BEHAVIOR OF VOICE CALLING AS A RECEIVER ....................................................... 58 FIGURE 34: RI BEHAVIOR AS A CALLER.............................................................................................. 59 FIGURE 35: RI BEHAVIOR OF URC OR SMS RECEIVED .................................................................... 59 FIGURE 36: REFERENCE DESIGN FOR NETLIGHT ............................................................................ 60 FIGURE 37: RFTXMON SIGNAL DURING BURST TRANSMISSION .................................................... 61 FIGURE 38: RFTXMON SIGNAL DURING CALL ................................................................................... 62 FIGURE 39: REFERENCE DESIGN FOR GSM ANTENNA ................................................................... 64 FIGURE 40: RF SOLDERING SAMPLE ................................................................................................. 66 FIGURE 41: REFERENCE DESIGN FOR BLUETOOTH ANTENNA ...................................................... 67 M66_Hardware_Design Confidential / Released 7 / 82 GSM/GPRS Module Series M66 Hardware Design FIGURE 42: M66 MODULE TOP AND SIDE DIMENSIONS (UNIT: MM) ................................................ 75 FIGURE 43: M66 MODULE BOTTOM DIMENSIONS (UNIT: MM) ......................................................... 76 FIGURE 44: RECOMMENDED FOOTPRINT (UNIT: MM) ...................................................................... 77 FIGURE 45: TOP VIEW OF THE MODULE ............................................................................................ 78 FIGURE 46: BOTTOM VIEW OF THE MODULE .................................................................................... 78 FIGURE 47: REFLOW SOLDERING THERMAL PROFILE .................................................................... 80 FIGURE 48: TAPE AND REEL SPECIFICATION .................................................................................... 81 FIGURE 49: DIMENSIONS OF REEL ..................................................................................................... 82 FIGURE 50: RADIO BLOCK STRUCTURE OF CS-1, CS-2 AND CS-3 .................................................. 89 FIGURE 51: RADIO BLOCK STRUCTURE OF CS-4 ............................................................................. 90 M66_Hardware_Design Confidential / Released 8 / 82 GSM/GPRS Module Series M66 Hardware Design 1 Introduction This document defines the M66 module and describes its hardware interface which are connected with the customer application and the air interface. This document can help you quickly understand module interface specifications, electrical and mechanical details. Associated with application note and user guide, you can use M66 module to design and set up mobile applications easily. M66_Hardware_Design Confidential / Released 9 / 82 GSM/GPRS Module Series M66 Hardware Design 1.1. Safety Information The following safety precautions must be observed during all phases of the operation, such as usage, service or repair of any cellular terminal or mobile incorporating M66 module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel, and incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for the customers failure to comply with these precautions. Full attention must be given to driving at all times in order to reduce the risk of an accident. Using a mobile while driving (even with a handsfree kit) causes distraction and can lead to an accident. You must comply with laws and regulations restricting the use of wireless devices while driving. M66_Hardware_Design Confidential / Released 10 / 82 GSM/GPRS Module Series M66 Hardware Design Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is switched off. The operation of wireless appliances in an aircraft is forbidden, so as to prevent interference with communication systems. Consult the airline staff about the use of wireless devices on boarding the aircraft, if your device offers a Airplane Mode which must be enabled prior to boarding an aircraft. Switch off your wireless device when in hospitals, clinics or other health care facilities. These requests are desinged to prevent possible interference with sentitive medical equipment. Cellular terminals or mobiles operating over radio frequency signal and cellular network cannot be guaranteed to connect in all conditions, for example no mobile fee or with an invalid SIM card. While you are in this condition and need emergent help, please remember using emergency call. In order to make or receive a call, the cellular terminal or mobile must be switched on and in a service area with adequate cellular signal strength. Your cellular terminal or mobile contains a transmitter and receiver. When it is ON , it receives and transmits radio frequency energy. RF interference can occur if it is used close to TV set, radio, computer or other electric equipment. In locations with potencially explosive atmospheres, obey all posted signs to turn off wireless devices such as your phone or other cellular terminals. Areas with potencially explosive atmospheres include fuelling areas, below decks on boats, fuel or chemical transfer or storage facilities, areas where the air contains chemicals or particles such as grain, dust or metal powders, etc. M66_Hardware_Design Confidential / Released 11 / 82 GSM/GPRS Module Series M66 Hardware Design 2 Product Concept 2.1. General Description M66 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, EGSM900MHz, DCS1800MHz and PCS1900MHz. The M66 features GPRS multi-slot class 12 and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. For more details about GPRS multi-slot classes and coding schemes, please refer to the Appendix B & C. With a tiny profile of 15.8mm 17.7mm 2.3mm, the module can meet almost all the requirements for M2M applications, including Vehicles and Personal Tracking, Security System, Wireless POS, Industrial PDA, Smart Metering, and Remote Maintenance& Control, etc. M66 is an SMD type module with LCC package, which can be easily embedded into applications. It provides abundant hardware interfaces like PCM Interface. Designed with power saving technique, the current consumption of M66 is as low as 1.3 mA in SLEEP mode when DRX is 5. M66 is integrated with Internet service protocols, such as TCP/UDP, FTP and PPP. Extended AT commands have been developed for you to use these Internet service protocols easily. M66 supports Bluetooth interface, it is fully compliant with Bluetooth specification 3.0. The module fully complies with the RoHS directive of the European Union. 2.2. Key Features M66_Hardware_Design Confidential / Released 12 / 82 GSM/GPRS Module Series M66 Hardware Design The following table describes the detailed features of M66 module. Table 1: Module Key Features Feature Implementation Power Supply Power Saving Frequency Bands Single supply voltage: 3.3V ~ 4.6V Typical supply voltage: 4V Typical power consumption in SLEEP mode: 1.3 mA @DRX=5 1.2 mA @DRX=9 Quad-band: GSM850, EGSM900, DCS1800, PCS1900. The module can search these frequency bands automatically The frequency bands can be set by AT command Compliant to GSM Phase 2/2+
GSM Class Small MS Transmitting Power GPRS Connectivity DATA GPRS Temperature Range Bluetooth SMS Class 4 (2W) at GSM850 and EGSM900 Class 1 (1W) at DCS1800 and PCS1900 GPRS multi-slot class 12 (default) GPRS multi-slot class 1~12 (configurable) GPRS mobile station class B GPRS data downlink transfer: max. 85.6kbps GPRS data uplink transfer: max. 85.6kbps Coding scheme: CS-1, CS-2, CS-3 and CS-4 Support the protocols PAP (Password Authentication Protocol) usually used for PPP connections Internet service protocols TCP/UDP, FTP, PPP, HTTP, NTP, PING Support Packet Broadcast Control Channel (PBCCH) Support Unstructured Supplementary Service Data (USSD) Operation temperature range: -35C ~ +75C 1) Extended temperature range: -40C ~ +85C 2) Support Bluetooth specification 3.0 Output Power: Class 1 (Typical 7.5dBm) Text and PDU mode SMS storage: SIM card SIM Interface Support SIM card: 1.8V, 3.0V Audio Features Speech codec modes:
Half Rate (ETS 06.20) M66_Hardware_Design Confidential / Released 13 / 82 GSM/GPRS Module Series M66 Hardware Design Full Rate (ETS 06.10) Enhanced Full Rate (ETS 06.50/06.60/06.80) Adaptive Multi-Rate (AMR) Echo Suppression Noise Reduction UART Port:
Seven lines on UART port interface Used for AT command, GPRS data Multiplexing function Support autobauding from 4800bps to 115200bps Debug Port:
Two lines on debug port interface DBG_TXD and DBG_RXD Debug Port only used for firmware debugging Auxiliary Port:
Used for AT command UART Interfaces Phonebook Management Support phonebook types: SM, ME, ON, MC, RC, DC, LD, LA SIM Application Toolkit Support SAT class 3, GSM 11.14 Release 99 Real Time Clock Supported Physical Characteristics Size: 15.80.15 17.70.15 2.30.2mm Weight: Approx. 1.3g Firmware Upgrade Firmware upgrade via UART Port Antenna Interface Connected to antenna pad with 50 Ohm impedance control NOTES 1. 1) Within operation temperature range, the module is 3GPP compliant. 2) Within extended temperature range, the module remains the ability to establish and maintain a voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction; there are also no effects on radio spectrum and no harm to radio network. Only one or more parameters like Pout might reduce in their value and exceed the specified tolerances. When the temperature returns to the normal operating M66_Hardware_Design Confidential / Released 14 / 82 GSM/GPRS Module Series M66 Hardware Design temperature levels, the module will meet 3GPP compliant again. Table 2: Coding Schemes and Maximum Net Data Rates over Air Interface Coding Scheme 1 Timeslot 2 Timeslot 4 Timeslot CS-1 CS-2 CS-3 CS-4 9.05kbps 13.4kbps 15.6kbps 21.4kbps 18.1kbps 26.8kbps 31.2kbps 42.8kbps 36.2kbps 53.6kbps 62.4kbps 85.6kbps 2.3. Functional Diagram The following figure shows a block diagram of M66 and illustrates the major functional parts. Radio frequency part Power management The peripheral interface Power supply Turn-on/off interface UART interface Audio interface PCM interface SIM interface SD interface ADC interface RF interface BT interface M66_Hardware_Design Confidential / Released 15 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 1: Module Functional Diagram 2.4. Evaluation Board In order to help you to develop applications with M66, Quectel supplies an evaluation board (EVB), RS-232 to USB cable, power adapter, earphone, antenna and other peripherals to control or test the module. For details, please refer to the document [11]. M66_Hardware_Design Confidential / Released 16 / 82 GSM/GPRS Module Series M66 Hardware Design 3 Application Interface The module adopts LCC package and has 44 pins. The following chapters provide detailed descriptions about these pins. Pin of module Operating modes Power supply Power on/down Power saving RTC Serial interfaces Audio interfaces PCM interface SIM card interface SD card interface ADC Behaviors of the RI Network status indication RF transmitting signal indication M66_Hardware_Design Confidential / Released 17 / 82 GSM/GPRS Module Series M66 Hardware Design 3.1. Pin of Module 3.1.1. Pin Assignment Figure 2: Pin Assignment NOTE Keep all reserved pins open. M66_Hardware_Design Confidential / Released 18 / 82 GSM/GPRS Module Series M66 Hardware Design 3.1.2. Pin Description Table 3: IO Parameters Definition Type Description IO DI DO PI PO AI AO Bidirectional input/output Digital input Digital output Power input Power output Analog input Analog output Table 4: Pin Description Power Supply PIN Name PIN No. I/O Description DC Characteristics VBAT 42,43 PI Main power supply of module:
VBAT=3.3V~4.6V VImax=4.6V VImin=3.3V VInorm=4.0V VRTC 44 IO Power supply for RTC when VBAT is not supplied for the system. Charging for backup battery or golden capacitor when the VBAT is applied. VDD_ 24 PO Supply 2.8V voltage for VImax=3.3V VImin=1.5V VInorm=2.8V VOmax=3V VOmin=2V VOnorm=2.8V IOmax=2mA Iin10uA VOmax=2.9V Comment Make sure that supply sufficient current in a transmitting burst typically rises to 1.6A. If unused, keep this pin open. 1. If unused, M66_Hardware_Design Confidential / Released 19 / 82 GSM/GPRS Module Series M66 Hardware Design EXT external circuit. VOmin=2.7V VOnorm=2.8V IOmax=20mA keep this pin open. 2. Recommend to add a 2.2~4.7uF bypass capacitor, when using this pin for power supply. 27,34 36,37 40,41 GND Turn on/off Ground PIN Name PIN No. I/O Description DC Characteristics Comment PWRKEY 7 DI Power on/off key. PWRKEY should be pulled down for a moment to turn on or turn off the system. VILmax=
0.1VBAT VIHmin=
0.6VBAT VIHmax=3.1V Audio Interface PIN Name PIN No. I/O Description DC Characteristics MICP MICN SPK1P SPK1N 3, 4 5, 6 AI AO Positive and negative voice input Channel 1 positive and negative voice output SPK2P 2 AO Channel 2 voice output Refer to Section 3.8 AGND 1 Network Status Indicator Analog ground. Separate ground connection for external audio circuits. Comment If unused, keep these pins open. If unused, keep these pins open. Support both voice and ringtone output. If unused, keep this pin open. M66_Hardware_Design Confidential / Released 20 / 82 GSM/GPRS Module Series M66 Hardware Design PIN Name PIN No. I/O Description NETLIGHT 16 DO Network status indication UART Port PIN Name PIN No. I/O Description 17 18 19 20 21 22 23 TXD RXD DTR RI DCD CTS RTS Debug Port DO Transmit data DI DI DO DO DO DI Receive data Data terminal ready Ring indication Data carrier detection Clear to send Request to send DC Characteristics VOHmin=
0.85VDD_EXT VOLmax=
0.15VDD_EXT Comment If unused, keep this pin open. DC Characteristics VILmin=0V VILmax=
0.25VDD_EXT VIHmin=
0.75VDD_EXT VIHmax=
VDD_EXT+0.2 VOHmin=
0.85VDD_EXT VOLmax=
0.15VDD_EXT Comment If only use TXD, RXD and GND to communicate, recommended to keep other pins open. PIN No. PIN Name DBG_ TXD DBG_ RXD Auxiliary Port 39 38 PIN No. PIN Name TXD_ AUX RXD_ AUX SIM Interface 29 28 I/O Description DC Characteristics Comment DO Transmit data DI Receive data Same as above If unused, keep these pins open. I/O DO Description Transmit data DI Receive data DC Characteristics Comment Same as above If unused, keep these pins open. PIN Name PIN No. I/O Description SIM_ VDD 14 PO Power supply for SIM card SIM_ CLK 13 DO SIM clock DC Characteristics The voltage can be selected by software automatically. Either 1.8V or 3.0V. VOLmax=
0.15SIM_VDD Comment All signals of SIM interface should be protected against ESD with a TVS M66_Hardware_Design Confidential / Released 21 / 82 GSM/GPRS Module Series M66 Hardware Design SIM_ DATA 11 IO SIM data SIM_ RST 12 DO SIM reset diode array. Maximum trace length is 200mm from the module pad to SIM card holder. VOHmin=
0.85SIM_VDD VILmax=
VIHmin=
0.25SIM_VDD 0.75SIM_VDD VOLmax=
VOHmin=
0.15SIM_VDD 0.85SIM_VDD VOLmax=
0.15SIM_VDD VOHmin=
0.85SIM_VDD SIM_ GND ADC 10 SIM ground PIN Name PIN No. I/O Description Reference voltage of ADC circuit DC Characteristics VOmax=2.9V VOmin=2.7V VOnorm=2.8V General purpose analog to digital converter. Voltage range:
0V to 2.8V 8 9 AVDD ADC0 PCM PIN Name PIN No. PCM_ CLK 30 PCM_ SYNC PCM_ IN 31 32 PO AI I/O DO DO DI Description PCM clock PCM frame synchronization PCM data input PCM_ OUT 33 DO PCM data output Comment If unused, keep this pin open. If unused, keep this pin open. Comment If unused, keep this pin open. DC Characteristics VILmin= 0V VILmax=
0.25VDD_EXT VIHmin=
0.75VDD_EXT VIHmax=
VDD_EXT+0.2 VOHmin=
0.85VDD_EXT VOLmax=
0.15VDD_EXT Antenna Interface PIN Name RF_ ANT PIN No. I/O Description DC Characteristics Comment 35 IO GSM antenna pad Impedance of 50 M66_Hardware_Design Confidential / Released 22 / 82 GSM/GPRS Module Series M66 Hardware Design BT_ ANT 26 IO BT antenna pad Impedance of 50 Transmitting Signal Indication PIN Name PIN No. I/O Description RFTXMON 25 DO Transmission signal indication DC Characteristics VOHmin=
0.85VDD_EXT VOLmax=
0.15VDD_EXT Other Interface PIN Name PIN No. I/O Description DC Characteristics RESERVED 15 If unused, keep this pin open. Comment If unused, keep this pin open. Comment Keep these pins open. 3.2. Operating Modes The table below briefly summarizes the various operating modes in the following chapters. Table 5: Overview of Operating Modes Mode Function Normal Operation GSM/GPRS Sleep GSM IDLE GSM TALK After enabling sleep mode by AT+QSCLK=1, the module will automatically enter into Sleep Mode if DTR is set to high level and there is no interrupt (such as GPIO interrupt or data on UART port). In this case, the current consumption of module will reduce to the minimal level. During Sleep Mode, the module can still receive paging message and SMS from the system normally. Software is active. The module has registered to the GSM network, and the module is ready to send and receive GSM data. GSM connection the power consumption is decided by the configuration of Power Control Level (PCL), dynamic DTX control and the working RF band. is ongoing. this mode, In M66_Hardware_Design Confidential / Released 23 / 82 GSM/GPRS Module Series M66 Hardware Design GPRS IDLE GPRS STANDBY GPRS READY GPRS DATA The module is not registered to GPRS network. The module is not reachable through GPRS channel. The module is registered to GPRS network, but no GPRS PDP context is active. The SGSN knows the Routing Area where the module is located at. The PDP context is active, but no data transfer is ongoing. The module is ready to receive or send GPRS data. The SGSN knows the cell where the module is located at. There this mode, power consumption is decided by the PCL, working RF band and GPRS multi-slot configuration. is GPRS data transfer. In in Normal shutdown by sending the AT+QPOWD=1 command or using the PWRKEY pin. The power management ASIC disconnects the power supply from the base band part of the module, and only the power supply for the RTC is remained. Software is not active. The UART interfaces are not accessible. Operating voltage (connected to VBAT) remains applied. AT+CFUN command can set the module to a minimum functionality mode without removing the power supply. In this case, the RF part of the module will not work or the SIM card will not be accessible, or both RF part and SIM card will be disabled, but the UART port is still accessible. The power consumption in this case is very low. POWER DOWN Minimum Functionality Mode
(without removing power supply) 3.3. Power Supply 3.3.1. Power Features of Module The power supply is one of the key issues in designing GSM terminals. Because of the 577us radio burst in GSM every 4.615ms, power supply must be able to deliver high current peaks in a burst period. During these peaks, drops on the supply voltage must not exceed minimum working voltage of module. For the M66 module, the max current consumption could reach to 1.6A during a burst transmission. It will cause a large voltage drop on the VBAT. In order to ensure stable operation of the module, it is recommended that the max voltage drop during the burst transmission does not exceed 400mV. M66_Hardware_Design Confidential / Released 24 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 3: Voltage Ripple during Transmitting 3.3.2. Decrease Supply Voltage Drop The power supply range of the module is 3.3V to 4.6V. Make sure that the input voltage will never drop below 3.3V even in a burst transmission. If the power voltage drops below 3.3V, the module could turn off automatically. For better power performance, it is recommended to place a 100uF tantalum capacitor with low ESR (ESR=0.7) and ceramic capacitor 100nF, 33pF and 10pF near the VBAT pin. The reference circuit is illustrated in Figure 4. The VBAT route should be wide enough to ensure that there is not too much voltage drop during burst transmission. The width of trace should be no less than 2mm and the principle of the VBAT route is the longer route, the wider trace. Figure 4: Reference Circuit for the VBAT Input M66_Hardware_Design Confidential / Released 25 / 82 GSM/GPRS Module Series M66 Hardware Design 3.3.3. Reference Design For Power Supply The power design for the module is very important, since the performance of power supply for the module largely depends on the power source. The power supply is capable of providing the sufficient current up to 2A at least. If the voltage drop between the input and output is not too high, it is suggested to use a LDO as modules power supply. If there is a big voltage difference between the input source and the desired output (VBAT), a switcher power converter is recommended to use as a power supply. The following figure shows a reference design for +5V input power source. The designed output for the power supply is 4.0V and the maximum load current is 3A. In addition, in order to get a stable output voltage, a zener diode is placed close to the pins of VBAT. As to the zener diode, it is suggested to use a zener diode whose reverse zener voltage is 5.1V and dissipation power is more than 1 Watt. Figure 5: Reference Circuit for Power Supply NOTE It is suggested to control the modules main power supply (VBAT) via LDO enable pin to restart the module when the module has become abnormal. Power switch circuit like P-channel MOSFET switch circuit can also be used to control VBAT. 3.3.4. Monitor Power Supply The command AT+CBC can be used to monitor the supply voltage of the module. The unit of the displayed voltage is mV. M66_Hardware_Design Confidential / Released 26 / 82 GSM/GPRS Module Series M66 Hardware Design For details, please refer to the document [1]. 3.4. Power On and Down Scenarios 3.4.1. Power On The module can be turned on by driving the pin PWRKEY to a low level voltage. An open collector driver circuit is suggested to control the PWRKEY. A simple reference circuit is illustrated as below. Figure 6: Turn on the Module with an Open-collector Driver NOTES 1. M66 module is set to autobauding mode (AT+IPR=0) by default. In the autobauding mode, URC RDY is not reported to the host controller after module is powered on. When the module is powered on after a delay of 4 or 5 seconds, it can receive AT command. Host controller should first send an AT string in order that the module can detect baud rate of host controller, and it should continue to send the next AT string until receiving OK string from the module. Then enter AT+IPR=x;&W to set a fixed baud rate for the module and save the configuration to flash memory of the module. After these configurations, the URC RDY would be received from the UART Port of the module every time when the module is powered on. For more details, refer to the section AT+IPR in document [1]. 2. When AT command is responded, indicates module is turned on successfully, or else the module fails to be turned on. The other way to control the PWRKEY is through a button directly. A TVS component is indispensable to be placed nearby the button for ESD protection. For the best performance, the TVS component must be M66_Hardware_Design Confidential / Released 27 / 82 GSM/GPRS Module Series M66 Hardware Design placed nearby the button. When pressing the key, electrostatic strike may generate from finger. A reference circuit is shown in the following figure. Figure 7: Turn on the Module with a Button The turn-on timing is illustrated as the following figure. Figure 8: Turn-on Timing NOTE Make sure that VBAT is stable before pulling down PWRKEY pin. The time of T1 is recommended to be 100ms. M66_Hardware_Design Confidential / Released 28 / 82 GSM/GPRS Module Series M66 Hardware Design 3.4.2. Power Down The following procedures can be used to turn off the module:
Normal power down procedure: Turn off module using the PWRKEY pin Normal power down procedure: Turn off module using command AT+QPOWD Under-voltage automatic shutdown: Take effect when under-voltage is detected. 3.4.2.1. Power Down Module Using the PWRKEY Pin It is a safe way to turn off the module by driving the PWRKEY to a low level voltage for a certain time. The power down scenario is illustrated below. Figure 9: Turn-off Timing The power down procedure causes the module to log off from the network and allows the firmware to save important data before completely disconnecting the power supply. Before the completion of the power down procedure, the module sends out the result code shown below:
After that moment, no further AT commands can be executed. Then the module enters the power down mode, the RTC is still active. NORMAL POWER DOWN NOTES M66_Hardware_Design Confidential / Released 29 / 82 GSM/GPRS Module Series M66 Hardware Design 1. This unsolicited result codes do not appear when autobauding is active and DTE and DCE are not correctly synchronized after start-up. The module is recommended to set to a fixed baud rate. 2. As logout network time is related to the local mobile network, it is recommended to delay about 12 seconds before disconnecting the power supply or restarting the module. 3.4.2.2. Power Down Module Using AT Command It is also a safe way to turn off the module via AT command AT+QPOWD=1. This command will let the module log off from the network and allow the firmware to save important data before completely disconnecting the power supply. Before the completion of the power down procedure the module sends out the result code shown below:
After that moment, no further AT commands can be executed. And then the module enters the power down mode, only the RTC is still active. Please refer to the document [1] for details about the AT command AT+QPOWD. NORMAL POWER DOWN 3.4.2.3. Under-voltage Automatic Shutdown The module will constantly monitor the voltage applied on the VBAT, if the voltage is 3.5V, the following URC will be presented:
UNDER_VOLTAGE WARNING The normal input voltage range is from 3.3V to 4.6V. If the voltage is <3.3V, the module would automatically shut down itself. If the voltage is <3.3V, the following URC will be presented:
UNDER_VOLTAGE POWER DOWN After that moment, no further AT commands can be executed. The module logs off from network and enters power down mode, and only RTC is still active. M66_Hardware_Design Confidential / Released 30 / 82 GSM/GPRS Module Series M66 Hardware Design NOTE These unsolicited result codes do not appear when autobauding is active and DTE and DCE are not correctly synchronized after start-up. The module is recommended to set to a fixed baud rate. 3.4.3. Restart You can restart the module by driving the PWRKEY to a low level voltage for a certain time, which is similar to the way of turning on module. In order to make the internal LDOs discharge completely after turning off the module, it is recommended to delay about 500ms before restarting the module. The restart timing is illustrated as the following figure. Figure 10: Timing of Restarting System 3.5. Power Saving Based on system requirements, there are several actions to drive the module to enter low current consumption status. For example, AT+CFUN can be used to set module into minimum functionality mode and DTR hardware interface signal can be used to lead system to SLEEP mode. 3.5.1. Minimum Functionality Mode Minimum functionality mode reduces the functionality of the module to a minimum level. The consumption of the current can be minimized when the slow clocking mode is activated at the same time. The mode is set with the AT+CFUN command which provides the choice of the functionality levels <fun>=0, 1, 4. 0: minimum functionality M66_Hardware_Design Confidential / Released 31 / 82 GSM/GPRS Module Series M66 Hardware Design 1: full functionality (default) 4: disable both transmitting and receiving of RF part If the module is set to minimum functionality by AT+CFUN=0, the RF function and SIM card function would be disabled. In this case, the UART port is still accessible, but all AT commands related with RF function or SIM card function will be not available. If the module has been set by the command with AT+CFUN=4, the RF function will be disabled, but the UART port is still active. In this case, all AT commands related with RF function will be not available. After the module is set by AT+CFUN=0 or AT+CFUN=4, it can return to full functionality by AT+CFUN=1. For detailed information about AT+CFUN, please refer to the document [1]. 3.5.2. SLEEP Mode The SLEEP mode is disabled by default. You can enable it by AT+QSCLK=1. On the other hand, the default setting is AT+QSCLK=0 and in this mode, the module cannot enter SLEEP mode. When the module is set by the command with AT+QSCLK=1, you can control the module to enter or exit from the SLEEP mode through pin DTR. When DTR is set to high level, and there is no on-air or hardware interrupt such as GPIO interrupt or data on UART port, the module will enter SLEEP mode automatically. In this mode, the module can still receive voice, SMS or GPRS paging from network, but the UART port does not work. 3.5.3. Wake Up Module From SLEEP Mode When the module is in the SLEEP mode, the following methods can wake up the module. If the DTR Pin is set low, it would wake up the module from the SLEEP mode. The UART port will be active within 20ms after DTR is changed to low level. Receive a voice or data call from network wakes up module. Receive an SMS from network wakes up module. NOTE DTR pin should be held at low level during communication between the module and DTE. M66_Hardware_Design Confidential / Released 32 / 82 GSM/GPRS Module Series M66 Hardware Design 3.5.4. Summary of State Transition Table 6: Summary of State Transition Current Mode Next Mode Power Down Normal Mode Sleep Mode Power Down Use PWRKEY Normal Mode AT+QPOWD, use PWRKEY pin Use AT command AT+QSCLK=1 and pull up DTR SLEEP Mode Use PWRKEY pin Pull DTR down or incoming call or SMS or GPRS 3.6. RTC Backup The RTC (Real Time Clock) function is supported. The RTC is designed to work with an internal power supply. There are three kinds of designs for RTC backup power:
Use VBAT as the RTC power source. When the module is turned off and the main power supply (VBAT) is remained, the real time clock is still active as the RTC core is supplied by VBAT. In this case, the VRTC pin can be kept floating. Use VRTC as the RTC power source. If the main power supply (VBAT) is removed after the module is turned off, a backup supply such as a coin-cell battery (rechargeable or non-chargeable) or a super-cap can be used to supply the VRTC pin to keep the real time clock active. Use VBAT and VRTC as the RTC power source. As only powering the VRTC pin to keep the RTC will lead an error about 5 minutes a day, it is recommended to power VBAT and VRTC pin at the same time when RTC function is needed. The recommended supply for RTC core circuits are shown as below. M66_Hardware_Design Confidential / Released 33 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 11: VRTC is Supplied by a Non-chargeable Battery Figure 12: VRTC is Supplied by a Rechargeable Battery M66_Hardware_Design Confidential / Released 34 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 13: VRTC is Supplied by a Capacitor A rechargeable or non-chargeable coin-cell battery can also be used here, for more information, please visit http://www.sii.co.jp/en/. NOTE If you want to keep an accurate real time, please keep the main power supply VBAT alive. 3.7. Serial Interfaces The module provides three serial ports: UART Port, Debug Port and Auxiliary UART Port. The module is designed as a DCE (Data Communication Equipment), following the traditional DCE-DTE (Data Terminal Equipment) connection. Autobauding function supports baud rate from 4800bps to 115200bps. The UART Port:
TXD: Send data to RXD of DTE. RXD: Receive data from TXD of DTE. RTS: Request to send. CTS: Clear to send. DTR: DTE is ready and inform DCE (this pin can wake the module up). M66_Hardware_Design Confidential / Released 35 / 82 GSM/GPRS Module Series M66 Hardware Design RI: Ring indicator (when there is a call, SMS or URC output, the module will inform DTE with the RI pin). DCD: Data carrier detection (the validity of this pin demonstrates the communication link is set up). NOTE Hardware flow control is disabled by default. When hardware flow control is required, RTS and CTS should be connected to the host. AT command AT+IFC=2,2 is used to enable hardware flow control. AT command AT+IFC=0,0 is used to disable the hardware flow control. For more details, please refer to the document [1]. The Debug Port:
DBG_TXD: Send data to the COM port of computer. DBG_RXD: Receive data from the COM port of computer. The Auxiliary UART Port:
TXD_AUX: Send data to the RXD of DTE. RXD_AUX: Receive data from the TXD of DTE. The logic levels are described in the following table. Table 7: Logic Levels of the UART Interface Parameter VIL VIH VOL VOH Min. 0 Max. Unit 0.25VDD_EXT 0.75VDD_EXT VDD_EXT +0.2 0 0.15VDD_EXT 0.85VDD_EXT VDD_EXT V V V V Table 8: Pin Definition of the UART Interfaces Interface UART Port Pin Name TXD Pin No. 17 Description Transmit data M66_Hardware_Design Confidential / Released 36 / 82 GSM/GPRS Module Series M66 Hardware Design RXD DTR RI DCD CTS RTS DBG_RXD DBG_TXD RXD_AUX TXD_AUX 18 19 20 21 22 23 38 39 28 29 Receive data Data terminal ready Ring indication Data carrier detection Clear to send Request to send Receive data Transmit data Receive data Transmit data Debug Port Auxiliary UART Port 3.7.1. UART Port 3.7.1.1. The Feature of UART Port Seven lines on UART interface Contain data lines TXD and RXD, hardware flow control lines RTS and CTS, other control lines DTR, DCD and RI. Used for AT command, GPRS data, etc. Multiplexing function is supported on the UART Port. So far only the basic mode of multiplexing is available. Support the communication baud rates as the following:
300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200. The default setting is autobauding mode. Support the following baud rates for Autobauding function:
4800, 9600, 19200, 38400, 57600, 115200. The module disables hardware flow control by default. AT command AT+IFC=2,2 is used to enable hardware flow control. After setting a fixed baud rate or autobauding, please send AT string at that rate. The UART port is ready when it responds OK. Autobauding allows the module to detect the baud rate by receiving the string AT or at from the host or PC automatically, which gives module flexibility without considering which baud rate is used by the host controller. Autobauding is enabled by default. To take advantage of the autobauding mode, special attention should be paid according to the following requirements:
M66_Hardware_Design Confidential / Released 37 / 82 GSM/GPRS Module Series M66 Hardware Design Synchronization between DTE and DCE:
When DCE (the module) powers on with the autobauding enabled, it is recommended to wait 2 to 3 seconds before sending the first AT character. After receiving the OK response, DTE and DCE are correctly synchronized. If the host controller needs URC in the mode of autobauding, it must be synchronized firstly. Otherwise the URC will be discarded. Restrictions on autobauding operation:
The UART port has to be operated at 8 data bits, no parity and 1 stop bit (factory setting). The At and aT commands cannot be used. Only the strings AT or at can be detected (neither At nor aT). The Unsolicited Result Codes like RDY, +CFUN: 1 and +CPIN: READY will not be indicated when the module is turned on with autobauding enabled and not be synchronized. Any other Unsolicited Result Codes will be sent at the previous baud rate before the module detects the new baud rate by receiving the first AT or at string. The DTE may receive unknown characters after switching to new baud rate. It is not recommended to switch to autobauding from a fixed baud rate. If autobauding is active it is not recommended to switch to multiplex mode. NOTE To assure reliable communication and avoid any problems caused by undetermined baud rate between DCE and DTE, it is strongly recommended to configure a fixed baud rate and save it instead of using autobauding after start-up. For more details, please refer to the Section AT+IPR in document [1]. 3.7.1.2. The Connection of UART The connection between module and host using UART Port is very flexible. Three connection styles are illustrated as below. Reference design for Full-Function UART connection is shown as below when it is applied in modulation-demodulation. M66_Hardware_Design Confidential / Released 38 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 14: Reference Design for Full-Function UART Three-line connection is shown as below. Figure 15: Reference Design for UART Port UART Port with hardware flow control is shown as below. This connection will enhance the reliability of the mass data communication. M66_Hardware_Design Confidential / Released 39 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 16: Reference Design for UART Port with Hardware Flow Control 3.7.1.3. Firmware Upgrade The TXD, RXD can be used to upgrade firmware. The PWRKEY pin must be pulled down before firmware upgrade. The reference circuit is shown as below:
Figure 17: Reference Design for Firmware Upgrade NOTE The firmware of module might need to be upgraded due to certain reasons. It is recommended to reserve these pins in the host board for firmware upgrade. 3.7.2. Debug Port Two lines: DBG_TXD and DBG_RXD. It outputs log information automatically. Debug Port is only used for firmware debugging and its baud rate must be configured as 460800bps. M66_Hardware_Design Confidential / Released 40 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 18: Reference Design for Debug Port 3.7.3. Auxiliary UART Port Two data lines: TXD_AUX and RXD_AUX. Auxiliary UART port is used for AT command only and does not support GPRS data, Multiplexing function etc. Auxiliary UART port supports the communication baud rates as the following:
1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200. Auxiliary UART port could be used when you send AT+QEAUART=1 string on the UART port. The default baud rate setting is 115200bps, and does not support autobauding. The baud rate can be modified by AT+QSEDCB command. For more details, please refer to the document [1]. Figure 19: Reference Design for Auxiliary UART Port 3.7.4. UART Application The reference design of 3.3V level match is shown as below. If the host is a 3V system, please change the 5.6K resistor to 10K. M66_Hardware_Design Confidential / Released 41 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 20: Level Match Design for 3.3V System NOTE It is highly recommended to add the resistor divider circuit on the UART signal lines when the hosts level is 3V or 3.3V. For the higher voltage level system, a level shifter IC could be used between the host and the module. For more details about UART circuit design, please refer to document [13]. The following figure shows a sketch map between module and standard RS-232 interface. Since the electrical level of module is 2.8V, so a RS-232 level shifter must be used. Note that you should assure the IO voltage of level shifter which connects to module is 2.8V. M66_Hardware_Design Confidential / Released 42 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 21: Sketch Map for RS-232 Interface Match Please visit vendor web site to select suitable IC, such as: http://www.maximintegrated.com and http://www.exar.com/. 3.8. Audio Interfaces The module provides one analog input channels and two analog output channels. Table 9: Pin Definition of Audio Interface Interface Pin Name Pin No. Description AIN/AOUT1 MICP MICN SPK1P SPK1N 3 4 5 6 Microphone positive input Microphone negative input Channel 1 Audio positive output Channel 1 Audio negative output M66_Hardware_Design Confidential / Released 43 / 82 GSM/GPRS Module Series M66 Hardware Design AIN/AOUT2 MICP MICN SPK2P AGND 3 4 2 1 Microphone positive input Microphone negative input Channel 2 Audio positive output Form a pseudo-differential pair with SPK2P AIN can be used for input of microphone and line. An electret microphone is usually used. AIN are differential input channels. AOUT1 is used for output of the receiver. This channel is typically used for a receiver built into a handset. AOUT1 channel is a differential channel. AOUT2 is typically used with earphone. It is a single-ended and mono channel. SPK2P and AGND can establish a pseudo differential mode. All of these two audio channels support voice and ringtone output, and so on, and can be switched by AT+QAUDCH command. For more details, please refer to the document [1]. Use AT command AT+QAUDCH to select audio channel:
0--AIN/AOUT1, the default value is 0. 1--AIN/AOUT2, this channel is always used for earphone. For each channel, you can use AT+QMIC to adjust the input gain level of microphone. You can also use AT+CLVL to adjust the output gain level of receiver and speaker. AT+QSIDET is used to set the side-tone gain level. For more details, please refer to the document [1]. 3.8.1. Decrease TDD Noise and other Noise The 33pF capacitor is applied for filtering out 900MHz RF interference when the module is transmitting at EGSM900MHz. Without placing this capacitor, TDD noise could be heard. Moreover, the 10pF capacitor here is for filtering out 1800MHz RF interference. However, the resonant frequency point of a capacitor largely depends on the material and production technique. Therefore, customer would have to discuss with its capacitor vendor to choose the most suitable capacitor for filtering out GSM850MHz, EGSM900MHz, DCS1800MHz and PCS1900MHz separately. The severity degree of the RF interference in the voice channel during GSM transmitting period largely depends on the application design. In some cases, EGSM900 TDD noise is more severe; while in other cases, DCS1800 TDD noise is more obvious. Therefore, you can have a choice based on test results. M66_Hardware_Design Confidential / Released 44 / 82 GSM/GPRS Module Series M66 Hardware Design Sometimes, even no RF filtering capacitor is required. The capacitor which is used for filtering out RF noise should be close to audio interface or other audio interfaces. Audio alignment should be as short as possible. In order to decrease radio or other signal interference, the position of RF antenna should be kept away from audio interface and audio alignment. Power alignment and audio alignment should not be parallel, and power alignment should be far away from audio alignment. The differential audio traces have to be placed according to the differential signal layout rule. 3.8.2. Microphone Interfaces Design AIN channel come with internal bias supply for external electret microphone. A reference circuit is shown in the following figure. Figure 22: Reference Design for AIN M66_Hardware_Design Confidential / Released 45 / 82 GSM/GPRS Module Series M66 Hardware Design 3.8.3. Receiver and Speaker Interface Design Figure 23: Handset Interface Design for AOUT1 Differential layout Amplifier circuit Module SPK1P SPK1N Close to speaker 10pF 0603 10pF 0603 10pF 0603 GND 33pF 0603 33pF 0603 33pF 0603 GND ESD ESD Figure 24: Speaker Interface Design with an Amplifier for AOUT1 M66_Hardware_Design Confidential / Released 46 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 25: Handset Interface Design for AOUT2 Figure 26: Speaker Interface Design with an Amplifier for AOUT2 The suitable differential audio amplifier can be chosen from the Texas Instruments website
(http://www.ti.com/). There are also other excellent audio amplifier vendors in the market. NOTE 1. The value of C1 and C2 here depends on the input impedance of audio amplifier. M66_Hardware_Design Confidential / Released 47 / 82 GSM/GPRS Module Series M66 Hardware Design 3.8.4. Earphone Interface Design Figure 27: Earphone Interface Design 3.8.5. Audio Characteristics Table 10: Typical Electret Microphone Characteristics Parameter Working Voltage Working Current Min. 1.2 200 External Microphone Load Resistance Table 11: Typical Speaker Characteristics Typ. 1.5 2.2 Max. 2.0 500 Unit V uA K Ohm Parameter AOUT1 Output Min. Typ. Max. Single-ended Load resistance Ref level Differential Load resistance 0 32 32 2.4 Unit Ohm Vpp Ohm M66_Hardware_Design Confidential / Released 48 / 82 GSM/GPRS Module Series M66 Hardware Design Ref level Load resistance Reference level 0 0 32 4.8 2.4 Vpp Load Resistance Vpp Single-ended AOUT2 Output 3.9. PCM Interface M66 supports PCM interface. It is used for digital audio transmission between the module and the device. This interface is composed of PCM_CLK, PCM_SYNC, PCM_IN and PCM_OUT signal lines. Pulse-code modulation (PCM) is a converter that changes the consecutive analog audio signal to discrete digital signal. The whole procedure of Pulse-code modulation contains sampling, quantizing and encoding. Table 12: Pin Definition of PCM Interface Pin Name Pin No. Description PCM_CLK PCM_SYNC PCM_IN 30 31 32 PCM_OUT 33 3.9.1. Configuration PCM clock output PCM frame synchronization output PCM data input PCM data output M66 module supports 16-bit line code PCM format. The sample rate is 8 KHz; the clock source is 256 KHz; and the module can only act as master mode. The PCM interface supports both long and short synchronization simultaneously. Furthermore, it only supports MSB first. For detailed information, please refer to the table below. M66_Hardware_Design Confidential / Released 49 / 82 GSM/GPRS Module Series M66 Hardware Design Table 13: Configuration PCM Line Interface Format Data Length Sample Rate Linear Linear: 16 bits 8KHz PCM Clock/Synchronization Source PCM master mode: clock and synchronization generated by module is PCM Synchronization Rate 8KHz PCM Clock Rate PCM master mode: 256 KHz (line) PCM Synchronization Format Long/short synchronization PCM Data Ordering MSB first NO NO Zero Padding Sign Extension 3.9.2. Timing The sample rate of the PCM interface is 8 KHz and the clock source is 256 KHz, so every frame contains 32 bits data. M66 supports 16 bits line code PCM format. The left 16 bits are valid, and the data of the left 16 bits and the right 16 bits are the same. The following diagram shows the timing of different combinations. The synchronization length in long synchronization format can be programmed by firmware from one bit to eight bits. You can configure the PCM input and output volume by executing AT+QPCMVOL command. For more M66_Hardware_Design Confidential / Released 50 / 82 GSM/GPRS Module Series M66 Hardware Design details, please refer to Chapter 3.9.4. Figure 28: Long Synchronization Diagram Figure 29: Short Synchronization Diagram 3.9.3. Reference Design M66 can only work as a master, providing synchronization and clock source. The reference design is shown as below. M66_Hardware_Design Confidential / Released 51 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 30: Reference Design for PCM 3.9.4. AT Command There are two AT commands about the configuration of PCM, listed as below. AT+QPCMON can configure operating mode of PCM. AT+QPCMON=mode, Sync_Type, Sync_Length, SignExtension, MSBFirst Table 14: QPCMON Command Description Parameter Scope Description Mode Sync_Type Sync_Length SignExtension MSBFirst 0,2 0~1 1~8 0~1 0~1 0: Close PCM 2: Open PCM when audio talk is set up 0: Short synchronization 1: Long synchronization Programmed from one bit to eight bits Not supported 0: MSB first 1: Not supported AT+QPCMVOL can configure the volume of input and output. AT+QPCMVOL=vol_pcm_in, vol_pcm_out M66_Hardware_Design Confidential / Released 52 / 82 GSM/GPRS Module Series M66 Hardware Design Table 15: QPCMVOL Command Description Parameter Scope Description vol_pcm_in 0~32767 Set the input volume vol_pcm_out 0~32767 Set the output volume The voice may be distorted when this value exceeds 16384. 3.10. SIM Card Interface The SIM interface supports the functionality of the GSM Phase 1 specification and also supports the functionality of the new GSM Phase 2+ specification for FAST 64 kbps SIM card (intended for use with a SIM application Tool-kit). The SIM interface is powered by an internal regulator in the module. Both 1.8V and 3.0V SIM Cards are supported. Table 16: Pin Definition of the SIM Interface Pin Name Pin No. Description SIM_VDD 14 Supply power for SIM card. Automatic detection of SIM card voltage. 3.0V5% and 1.8V5%. Maximum supply current is around 10mA. SIM_CLK 13 SIM card clock. SIM_DATA SIM_RST 11 12 SIM card data I/O. SIM card reset. SIM_GND 10 SIM card ground. The reference circuit for a 6-pin SIM card socket is illustrated as the following figure. M66_Hardware_Design Confidential / Released 53 / 82 GSM/GPRS Module Series M66 Hardware Design SIM_GND SIM_VDD SIM_RST SIM_CLK Module 22R 22R SIM_DATA 22R 100nF SIM_Holder VCC RST CLK GND VPP IO 33pF33pF 33pF 33pF TVS GND GND Figure 31: Reference Circuit for SIM Interface with the 6-pin SIM Card Holder information of SIM card holder, you can visit http://www.amphenol.com and For more http://www.molex.com . In order to enhance the reliability and availability of the SIM card in application. Please follow the below criteria in the SIM circuit design:
Keep layout of SIM card as close as possible to the module. Assure the possibility of the length of the trace is less than 200mm. Keep SIM card signal away from RF and VBAT alignment. Assure the ground between module and SIM cassette short and wide. Keep the width of ground no less than 0.5mm to maintain the same electric potential. The decouple capacitor of SIM_VDD is less than 1uF and must be near to SIM cassette. To avoid cross talk between SIM_DATA and SIM_CLK. Keep them away with each other and shield them with surrounded ground. In order to offer good ESD protection, it is recommended to add a TVS diode array. For more information of TVS diode, please visit http://www.onsemi.com/. The most important rule is to place the ESD protection device close to the SIM card socket and make sure the nets being protected will go through the ESD device first and then lead to module. The 22 resistors should be connected in series between the module and the SIM card so as to suppress the EMI spurious transmission and enhance the ESD protection. Please to be noted that the SIM peripheral circuit should be close to the SIM card socket. Place the RF bypass capacitors (33pF) close to the SIM card on all signals line for improving EMI. M66_Hardware_Design Confidential / Released 54 / 82 GSM/GPRS Module Series M66 Hardware Design 3.11. SD Card Interface The module provides an SD card interface that supports many types of memory, such as Memory Stick, SD/MCC card and T-Flash or Micro SD card. The following are the main features of SD card interface. Only support 1bit serial mode Not support the SPI mode for SD memory card Not support multiple SD memory cards Not support hot plug The data rate up to 48MHz in serial mode Up to 32GB maximum memory card capacity With the SD card interface features and reference circuit shown as below, you can easily design the SD card application circuit to enhance the memory capacity of the module. The users can store some high-capacity files to external memory card. Such as in the automotive application system, the module can record and store the audio file to the SD card, and also can play the audio files in SD card. Table 17: Pin Definition of SD Card Interface Pin No. Description 32 33 31 Command signal of SD card output Clock signal of SD card output Data output and input signal of SD card Alternate Function 1) PCM_IN PCM_OUT PCM_SYNC Pin Name SD_CMD SD_CLK SD_DATA NOTE 1) If several interfaces share the same I/O pin, to avoid conflict between these alternate functions, only one peripheral should be enabled at a time. A reference design for Micro SD card is shown below. M66_Hardware_Design Confidential / Released 55 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 32: Reference Circuit for Micro SD Card Table 18: Pin Name of the SD Card and T-Flash (Micro SD) Card Pin No. Pin Name of SD Card Pin Name of T-Flash (Micro SD) Card 1 2 3 4 5 6 7 8 9 CD/DATA3 CMD VSS1 VDD CLK VSS2 DATA0 DATA1 DATA2 DATA2 CD/DATA3 CMD VDD CLK VSS DATA0 DATA1 In SD card interface designing, in order to ensure good communication performance with SD card, the following design principles should be complied with:
Keep all the SD card signals far away from VBAT power and RF trace. Route all SD card signals as short as possible. Ensure the length of every trace does not exceed 10cm. The SD_CLK, SD_DATA and SD_CMD trace should be routed together. Keep trace difference of M66_Hardware_Design Confidential / Released 56 / 82 GSM/GPRS Module Series M66 Hardware Design SD_DATA, SD_CMD and SD_CLK to be less than 10mm. In order to offer good ESD protection, it is recommended to add TVS on signals with capacitance less than 15pF. Reserve external pull-up resistors for other data lines except the DATA0 signal. The SD_CLK and SD_DATA line must be shielded by ground in order to improve EMI suppression capability. 3.12. ADC The module provides an ADC channel to measure the value of voltage. Please give priority to the use of ADC0 channel. The command AT+QADC can read the voltage value applied on ADC0 pin. For details of this AT command, please refer to the document [1]. In order to improve the accuracy of ADC, the layout of ADC should be surrounded by ground. Table 19: Pin Definition of the ADC Pin Name Pin No. Description AVDD ADC0 8 9 Reference voltage of ADC circuit Analog to digital converter. Table 20: Characteristics of the ADC Item Min. Voltage Range ADC Resolution ADC Accuracy 0 Typ. 10 2.7 Max. 2.8 Units V bits mV M66_Hardware_Design Confidential / Released 57 / 82 GSM/GPRS Module Series M66 Hardware Design 3.13. Behaviors of The RI Table 21: Behaviors of the RI State Standby Voicecall SMS URC RI Response HIGH 120ms indicating NO CARRIER as an URC, then changes to HIGH again. Change to LOW, then:
1. Change to HIGH when call is established. 2. Use ATH to hang up the call, RI changes to HIGH. 3. Calling part hangs up, RI changes to HIGH first, and changes to LOW for 4. Change to HIGH when SMS is received. When a new SMS comes, the RI changes to LOW and holds low level for about 120ms, then changes to HIGH. Certain URCs can trigger 120ms low level on RI. For more details, please refer to the document [1]
If the module is used as a caller, the RI would maintain high except the URC or SMS is received. On the other hand, when it is used as a receiver, the timing of the RI is shown below. Figure 33: RI Behavior of Voice Calling as a Receiver M66_Hardware_Design Confidential / Released 58 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 34: RI Behavior as a Caller Figure 35: RI Behavior of URC or SMS Received 3.14. Network Status Indication The NETLIGHT signal can be used to drive a network status indicator LED. The working state of this pin is listed in the following table. Table 22: Working State of the NETLIGHT State Off Module Function The module is not running. 64ms On/800ms Off The module is not synchronized with network. 64ms On/2000ms Off The module is synchronized with network. 64ms On/600ms Off The GPRS data transmission after dialing the PPP connection. A reference circuit is shown as below. M66_Hardware_Design Confidential / Released 59 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 36: Reference Design for NETLIGHT 3.15. RF Transmitting Signal Indication The M66 provides a RFTXMON pins which will rise when the transmitter is active and fall after the transmitter activity is completed. Table 23: Pin Definition of the RFTXMON Pin Name RFTXMON Pin No. 25 Description Transmission signal indication There are two different modes for this function:
1) Active during the TX activity RFTXMON pin is used to indicate the TX burst, when it outputs a high level, 220us later there will be a TX burst. M66_Hardware_Design Confidential / Released 60 / 82 GSM/GPRS Module Series M66 Hardware Design You can execute AT+QCFG=RFTXburst, 1 to enable the function. The timing of the RFTXMON signal is shown below. Figure 37: RFTXMON Signal during Burst Transmission 2) Active during the Call RFTXMON will be HIGH during a call and the pin will become LOW after being hanged up. You can execute AT+QCFG=RFTXburst, 2 to enable the function. The timing of the RFTXMON signal is shown below. M66_Hardware_Design Confidential / Released 61 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 38: RFTXMON Signal during Call M66_Hardware_Design Confidential / Released 62 / 82 GSM/GPRS Module Series M66 Hardware Design 4 Antenna Interface M66 has two antenna interfaces, GSM antenna and BT antenna. The Pin 26 is the Bluetooth antenna pad. The Pin 35 is the GSM antenna pad. The RF interface of the two antenna pad has an impedance of 50. 4.1. GSM Antenna Interface There is a GSM antenna pad named RF_ANT for M66. Table 24: Pin Definition of the RF_ANT Pin Name GND RF_ANT GND GND Pin No. 34 35 36 37 Description Ground GSM antenna pad Ground Ground 4.1.1. Reference Design The external antenna must be matched properly to achieve best performance, so the matching circuit is necessary, the reference design for RF is shown as below. M66_Hardware_Design Confidential / Released 63 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 39: Reference Design for GSM Antenna M66 provides an RF antenna pad for antenna connection. The RF trace in host PCB connected to the module RF antenna pad should be coplanar waveguide line or microstrip line, whose characteristic impedance should be close to 50. M66 comes with grounding pads which are next to the antenna pad in order to give a better grounding. Besides, a type match circuit is suggested to be used to adjust the RF performance. To minimize the loss on the RF trace and RF cable, take design into account carefully. The following table shows the requirement on GSM antenna. Table 25: Antenna Cable Requirements Type Requirements GSM850/EGSM900 Cable insertion loss <1dB DCS1800/PCS1900 Cable insertion loss <1.5dB Table 26: Antenna Requirements Type Requirements Frequency Range Depending by frequency band (s) provided by the network operator VSWR Gain (dBi) Max Input Power (W) Input Impedance () 2 1 50 50 Polarization Type Vertical 4.1.2. RF Output Power Table 27: The Module Conducted RF Output Power Frequency GSM850 Max. 33dBm2dB Min. 5dBm5dB M66_Hardware_Design Confidential / Released 64 / 82 GSM/GPRS Module Series M66 Hardware Design EGSM900 DCS1800 PCS1900 NOTE 33dBm2dB 30dBm2dB 30dBm2dB 5dBm5dB 0dBm5dB 0dBm5dB In GPRS 4 slots TX mode, the max output power is reduced by 2.5dB. This design conforms to the GSM specification as described in section 13.16 of 3GPP TS 51.010-1. 4.1.3. RF Receiving Sensitivity Table 28: The Module Conducted RF Receiving Sensitivity Frequency GSM850 EGSM900 DCS1800 PCS1900 Receive Sensitivity
< -109dBm
< -109dBm
< -109dBm
< -109dBm 4.1.4. Operating Frequencies Table 29: The Module Operating Frequencies Frequency Receive Transmit ARFCH 128~251 869~894MHz 824~849MHz 925~960MHz 880~915MHz 0~124, 975~1023 1805~1880MHz 1710~1785MHz 1930~1990MHz 1850~1910MHz 512~885 512~810 GSM850 EGSM900 DCS1800 PCS1900 M66_Hardware_Design Confidential / Released 65 / 82 GSM/GPRS Module Series M66 Hardware Design 4.1.5. RF Cable Soldering Soldering the RF cable to RF pad of module correctly will reduce the loss on the path of RF, please refer to the following example of RF soldering. Figure 40: RF Soldering Sample 4.2. Bluetooth Antenna Interface M66 supports Bluetooth interface. Bluetooth is a wireless technology that allows devices to communicate, or transmit data or voice, wirelessly over a short distance. It is described as a short-range communication technology intended to replace the cables connecting portable and/or fixed devices while maintaining high level of security. Bluetooth is standardized as IEEE802.15 and operates in the 2.4 GHz range using RF technology. Its data rates of up to 3Mbps. M66 is fully compliant with Bluetooth specification 3.0. M66 supports profile including SPP and OPP. M66_Hardware_Design Confidential / Released 66 / 82 GSM/GPRS Module Series M66 Hardware Design The module provides a Bluetooth antenna pad named BT_ANT. Table 30: Pin Definition of the BT_ANT Pin Name BT_ANT GND Pin No. 26 27 Description BT antenna pad Ground The external antenna must be matched properly to achieve best performance, so the matching circuit is necessary, the connection is recommended as in the following figure:
Figure 41: Reference Design for Bluetooth Antenna There are some suggestions for placing components and RF trace lying for Bluetooth RF traces:
Antenna matching circuit should be closed to the antenna;
M66_Hardware_Design Confidential / Released 67 / 82 GSM/GPRS Module Series M66 Hardware Design Keep the RF traces as 50;
The RF traces should be kept far away from the high frequency signals and strong disturbing source. M66_Hardware_Design Confidential / Released 68 / 82 GSM/GPRS Module Series M66 Hardware Design 5 Electrical, Reliability and Radio Characteristics 5.1. Absolute Maximum Ratings Absolute maximum ratings for power supply and voltage on digital and analog pins of module are listed in the following table:
Table 31: Absolute Maximum Ratings Parameter VBAT Peak Current of Power Supply RMS Current of Power Supply (during one TDMA- frame) Voltage at Digital Pins Voltage at Analog Pins Min.
-0.3 0 0
-0.3
-0.3 Voltage at Digital/analog Pins in Power Down Mode
-0.25 5.2. Operating Temperature The operating temperature is listed in the following table:
Max.
+4.73 2 0.7 3.08 3.08 0.25 Unit V A A V V V M66_Hardware_Design Confidential / Released 69 / 82 GSM/GPRS Module Series M66 Hardware Design Table 32: Operating Temperature Parameter Min. Operation temperature range
-35 Extended temperature range
-40 NOTES Typ.
+25 Max.
+75
+85 Unit 1) Within operation temperature range, the module is 3GPP compliant. 2) Within extended temperature range, the module remains the ability to establish and maintain a voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction; there are also no effects on radio spectrum and no harm to radio network. Only one or more parameters like Pout might reduce in their value and exceed the specified tolerances. When the temperature returns to the normal operating temperature levels, the module will meet 3GPP compliant again. 1. 2. 5.3. Power Supply Ratings Table 33: The Module Power Supply Ratings Parameter Description Conditions Min. Typ. Max. Unit VBAT Supply voltage Voltage drop during transmitting burst IVBAT Average supply current Voltage must stay within the min/max values, including voltage drop, ripple, and spikes. Maximum power control level on GSM850 and EGSM900. Power down mode SLEEP mode @DRX=5 Minimum functionality mode AT+CFUN=0 IDLE mode SLEEP mode AT+CFUN=4 IDLE mode SLEEP mode TALK mode GSM850/EGSM9001) DCS1800/PCS19002) 3.3 4.0 4.6 V 400 mV 150 1.3 13 0.98 13 1.0 223/219 153/151 uA mA mA mA mA mA mA mA M66_Hardware_Design Confidential / Released 70 / 82 GSM/GPRS Module Series M66 Hardware Design DATA mode, GPRS (3Rx, 2Tx) GSM850/EGSM9001) DCS1800/PCS19002) DATA mode, GPRS (2 Rx, 3Tx) GSM850/EGSM9001) DCS1800/PCS19002) DATA mode, GPRS (4 Rx, 1Tx) GSM850/EGSM9001) DCS1800/PCS19002) DATA mode, GPRS (1Rx, 4Tx) GSM850/EGSM9001) DCS1800/PCS19002) Maximum power control level on GSM850 and EGSM900. 363/393 268/257 506/546 366/349 217/234 172/170 458/4853) 462/439 mA mA mA mA mA mA mA mA 1.6 2 A Peak supply current (during transmission slot) NOTES 1) Power control level PCL 5. 2) Power control level PCL 0. 1. 2. 3) Under the GSM850 and EGSM900 spectrum, the power of 1Rx and 4Tx has been reduced. 5.4. Current Consumption The values of current consumption are shown as below. Table 34: The Module Current Consumption Condition Voice Call GSM850 Current Consumption
@power level #5 <300mA, Typical 223mA
@power level #12, Typical 83mA
@power level #19, Typical 62mA M66_Hardware_Design Confidential / Released 71 / 82 GSM/GPRS Module Series M66 Hardware Design EGSM900 DCS1800 PCS1900 GPRS Data
@power level #5 <300mA, Typical 219mA
@power level #12, Typical 83mA
@power level #19, Typical 63mA
@power level #0 <250mA, Typical 153mA
@power level #7, Typical 73mA
@power level #15, Typical 60mA
@power level #0 <250mA, Typical 151mA
@power level #7, Typical 76mA
@power level #15, Typical 61mA DATA Mode, GPRS ( 3 Rx, 2Tx ) CLASS 12 GSM850 EGSM900 DCS1800 PCS1900
@power level #5 <550mA, Typical 363mA
@power level #12, Typical 131mA
@power level #19, Typical 91mA
@power level #5 <550mA, Typical 393mA
@power level #12, Typical 132mA
@power level #19, Typical 92mA
@power level #0 <450mA, Typical 268mA
@power level #7, Typical 112mA
@power level #15, Typical 88mA
@power level #0 <450mA, Typical 257mA
@power level #7, Typical 119mA
@power level #15, Typical 89mA DATA Mode, GPRS ( 2 Rx, 3Tx ) CLASS 12 GSM850 EGSM900 DCS1800 PCS1900
@power level #5 <640mA, Typical 506mA
@power level #12, Typical 159mA
@power level #19, Typical 99mA
@power level #5 <600mA, Typical 546mA
@power level #12, Typical 160mA
@power level #19, Typical 101mA
@power level #0 <490mA, Typical 366mA
@power level #7, Typical 131mA
@power level #15, Typical 93mA
@power level #0 <480mA, Typical 348mA
@power level #7, Typical 138mA
@power level #15, Typical 94mA DATA Mode, GPRS ( 4 Rx,1Tx ) CLASS 12 GSM850
@power level #5 <350mA, Typical 216mA
@power level #12, Typical 103mA
@power level #19, Typical 83mA M66_Hardware_Design Confidential / Released 72 / 82 GSM/GPRS Module Series M66 Hardware Design EGSM900 DCS1800 PCS1900
@power level #5 <350mA, Typical 233mA
@power level #12, Typical 104mA
@power level #19, Typical 84mA
@power level #0 <300mA, Typical 171mA
@power level #7, Typical 96mA
@power level #15, Typical 82mA
@power level #0 <300mA, Typical 169mA
@power level #7, Typical 98mA
@power level #15, Typical 83mA DATA Mode, GPRS ( 1 Rx, 4Tx ) CLASS 12
@power level #5 <660mA, Typical 457mA
@power level #12, Typical 182mA
@power level #19, Typical 106mA
@power level #5 <660mA, Typical 484mA
@power level #12, Typical 187mA
@power level #19, Typical 109mA
@power level #0 <530mA, Typical 461mA
@power level #7, Typical 149mA
@power level #15, Typical 97mA
@power level #0 <530mA, Typical 439mA
@power level #7, Typical 159mA
@power level #15, Typical 99mA GSM850 EGSM900 DCS1800 PCS1900 NOTE GPRS Class 12 is the default setting. The module can be configured from GPRS Class 1 to Class 12. Setting to lower GPRS class would make it easier to design the power supply for the module. 5.5. Electro-static Discharge Although the GSM engine is generally protected against Electro-static Discharge (ESD), ESD protection precautions should still be emphasized. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any applications using the module. The measured ESD values of module are shown as the following table:
M66_Hardware_Design Confidential / Released 73 / 82 GSM/GPRS Module Series M66 Hardware Design Table 35: The ESD Endurance (Temperature: 25C, Humidity: 45%) Tested Point VBAT, GND RF_ANT TXD, RXD Others Contact Discharge Air Discharge 5KV 5KV 2KV 0.5KV 10KV 10KV 4KV 1KV M66_Hardware_Design Confidential / Released 74 / 82 GSM/GPRS Module Series M66 Hardware Design 6 Mechanical Dimensions This chapter describes the mechanical dimensions of the module. 6.1. Mechanical Dimensions of Module Figure 42: M66 Module Top and Side Dimensions (Unit: mm) M66_Hardware_Design Confidential / Released 75 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 43: M66 Module Bottom Dimensions (Unit: mm) M66_Hardware_Design Confidential / Released 76 / 82 GSM/GPRS Module Series M66 Hardware Design 6.2. Recommended Footprint 36 1 23 14 Figure 44: Recommended Footprint (Unit: mm) NOTES 1. The module should be kept about 3mm away from other components in the host PCB. 2. The circular test points with a radius of 1.75mm in the above recommended footprint should be treated as keepout areas. (keepout means do not pour copper on the mother board). M66_Hardware_Design Confidential / Released 77 / 82 GSM/GPRS Module Series M66 Hardware Design 6.3. Top View of the Module Figure 45: Top View of the Module 6.4. Bottom View of the Module Figure 46: Bottom View of the Module M66_Hardware_Design Confidential / Released 78 / 82 GSM/GPRS Module Series M66 Hardware Design 7 Storage and Manufacturing 7.1. Storage MC66 module is stored in a vacuum-sealed bag. The storage restrictions are shown as below. 1. Shelf life in the vacuum-sealed bag: 12 months at <40C and <90%RH. 2. After the vacuum-sealed bag is opened, devices that need to be mounted directly must be:
Mounted within 72 hours at the factory environment of 30C and <60% RH. Stored at <10% RH. 3. Devices require baking before mounting, if any circumstance below occurs. When the ambient temperature is 23C5C and the humidity indication card shows the humidity is >10% before opening the vacuum-sealed bag. Device mounting cannot be finished within 72 hours when the ambient temperature is <30C and the humidity is <60%. Stored at >10% RH. If baking is required, devices should be baked for 48 hours at 125C5C. 4. NOTE As the plastic package cannot be subjected to high temperature, it should be removed from devices before high to temperature (125C) baking. IPC/JEDECJ-STD-033 for baking procedure. is desired, please refer If shorter baking time M66_Hardware_Design Confidential / Released 79 / 82 GSM/GPRS Module Series M66 Hardware Design 7.2. Soldering Push the squeegee to apply the solder paste on the surface of stencil, thus making the paste fill the stencil openings and then penetrate to the PCB. The force on the squeegee should be adjusted properly so as to produce a clean stencil surface on a single pass. To ensure the module soldering quality, the thickness of stencil at the hole of the module pads should be 0.2 mm for M66. For more details, please refer to document [12]. It is suggested that peak reflow temperature is from 235C to 245C (for SnAg3.0Cu0.5 alloy). The absolute max reflow temperature is 260C. To avoid damage to the module caused by repeated heating, it is suggested that the module should be mounted after reflow soldering for the other side of PCB has been completed. Recommended reflow soldering thermal profile is shown below:
250 217 200 150 100 50 0 Preheat Heating Cooling Liquids Temperature 200 40s~60s 160 70s~120s Between 1~3/S 50 100 150 200 Time(s) 250 300 s Figure 47: Reflow Soldering Thermal Profile M66_Hardware_Design Confidential / Released 80 / 82 GSM/GPRS Module Series M66 Hardware Design 7.3. Packaging The modules are stored in a vacuum-sealed bag which is ESD protected. It should not be opened until the devices are ready to be soldered onto the application. 7.3.1. Tape and Reel Packaging The reel is 330mm in diameter and each reel contains 250 modules. Figure 48: Tape and Reel Specification M66_Hardware_Design Confidential / Released 81 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 49: Dimensions of Reel M66_Hardware_Design Confidential / Released 82 / 82 GSM/GPRS Module Series M66 Hardware Design 8 Appendix A References Table 36: Related Documents SN Document Name Remark
[1] Quectel_M66_AT_Commands_Manual AT commands manual
[2]
ITU-T Draft new recommendation V.25ter
[3] GSM 07.07
[4] GSM 07.10
[5] GSM 07.05
[6] GSM 11.14
[7] GSM 11.11
[8] GSM 03.38
[9] GSM 11.10 Serial asynchronous automatic dialing and control Digital cellular telecommunications
(Phase 2+); AT command set for GSM Mobile Equipment (ME) Support GSM 07.10 multiplexing protocol Digital cellular telecommunications
(Phase 2+); Use of Data Terminal Equipment Data Circuit terminating Equipment (DTE DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS) Digital cellular telecommunications
(Phase 2+); Specification of the SIM Application Toolkit for the Subscriber Identity module Mobile Equipment
(SIM ME) interface telecommunications Digital cellular
(Phase 2+); Specification of the Subscriber Identity module Mobile Equipment (SIM ME) interface Digital cellular telecommunications
(Phase 2+); Alphabets and language-specific information telecommunications Digital cellular
(MS)
(Phase 2); Mobile Station conformance specification; Part 1:
Conformance specification M66_Hardware_Design Confidential / Released 83 / 82 GSM/GPRS Module Series M66 Hardware Design
[10] GSM_UART_Application_Note UART port application note
[11] GSM_EVB_User_Guide GSM EVB user guide
[12] Module_Secondary_SMT_User_Guide Module secondary SMT user guide
[13] Quectel_GSM_Module_Digital_IO_Application_Note GSM Module Digital IO Application Note Table 37: Terms and Abbreviations Abbreviation Description ADC AMR ARP ASIC BER BOM BT BTS Analog-to-Digital Converter Adaptive Multi-Rate Antenna Reference Point Application Specific Integrated Circuit Bit Error Rate Bill of Material Bluetooth Base Transceiver Station CHAP Challenge Handshake Authentication Protocol CS CSD CTS DAC DRX DSP DCE DTE DTR Coding Scheme Circuit Switched Data Clear to Send Digital-to-Analog Converter Discontinuous Reception Digital Signal Processor Data Communications Equipment (typically module) Data Terminal Equipment (typically computer, external controller) Data Terminal Ready M66_Hardware_Design Confidential / Released 84 / 82 GSM/GPRS Module Series M66 Hardware Design DTX EFR Discontinuous Transmission Enhanced Full Rate EGSM Enhanced GSM EMC ESD ETS FCC FDMA FR GMSK GPRS GSM G.W HR I/O IC IMEI IOmax kbps LED Li-Ion MO MOQ MP MS Electromagnetic Compatibility Electrostatic Discharge European Telecommunication Standard Federal Communications Commission (U.S.) Frequency Division Multiple Access Full Rate Gaussian Minimum Shift Keying General Packet Radio Service Global System for Mobile Communications Gross Weight Half Rate Input/Output Integrated Circuit International Mobile Equipment Identity Maximum Output Load Current Kilo Bits Per Second Light Emitting Diode Lithium-Ion Mobile Originated Minimum Order Quantity Manufacture Product Mobile Station (GSM engine) M66_Hardware_Design Confidential / Released 85 / 82 GSM/GPRS Module Series M66 Hardware Design MT N.W PAP Mobile Terminated Net Weight Password Authentication Protocol PBCCH Packet Switched Broadcast Control Channel PCB PDU PPP RF RMS RTC RX SIM SMS Printed Circuit Board Protocol Data Unit Point-to-Point Protocol Radio Frequency Root Mean Square (value) Real Time Clock Receive Direction Subscriber Identification Module Short Message Service TDMA Time Division Multiple Access TE TX UART URC USSD VSWR VOmax VOnorm VOmin VIHmax VIHmin Terminal Equipment Transmitting Direction Universal Asynchronous Receiver & Transmitter Unsolicited Result Code Unstructured Supplementary Service Data Voltage Standing Wave Ratio Maximum Output Voltage Value Normal Output Voltage Value Minimum Output Voltage Value Maximum Input High Level Voltage Value Minimum Input High Level Voltage Value M66_Hardware_Design Confidential / Released 86 / 82 GSM/GPRS Module Series M66 Hardware Design VILmax VILmin VImax VInorm VImin VOHmax VOHmin VOLmax VOLmin Maximum Input Low Level Voltage Value Minimum Input Low Level Voltage Value Absolute Maximum Input Voltage Value Absolute Normal Input Voltage Value Absolute Minimum Input Voltage Value Maximum Output High Level Voltage Value Minimum Output High Level Voltage Value Maximum Output Low Level Voltage Value Minimum Output Low Level Voltage Value Phonebook Abbreviations SIM Last Dialing phonebook (list of numbers most recently dialed) Mobile Equipment list of unanswered MT Calls (missed calls) SIM (or ME) Own Numbers (MSISDNs) list Mobile Equipment list of Received Calls SIM phonebook LD MC ON RC SM M66_Hardware_Design Confidential / Released 87 / 82 GSM/GPRS Module Series M66 Hardware Design 9 Appendix B GPRS Coding Schemes Four coding schemes are used in GPRS protocol. The differences between them are shown in the following table. Table 38: Description of Different Coding Schemes Scheme Code Rate USF Pre-coded USF Radio Block excl.USF and BCS BCS Tail Coded Bits Punctured Bits CS-1 CS-2 CS-3 CS-4 1/2 2/3 3/4 1 3 3 3 3 3 6 6 12 181 268 312 428 40 16 16 16 4 4 4
-
456 588 676 456 0 132 220
-
Data Rate Kb/s 9.05 13.4 15.6 21.4 Radio block structure of CS-1, CS-2 and CS-3 is shown as the figure below. M66_Hardware_Design Confidential / Released 88 / 82 GSM/GPRS Module Series M66 Hardware Design Figure 50: Radio Block Structure of CS-1, CS-2 and CS-3 M66_Hardware_Design Confidential / Released 89 / 82 GSM/GPRS Module Series M66 Hardware Design Radio block structure of CS-4 is shown as the following figure. Figure 51: Radio Block Structure of CS-4 M66_Hardware_Design Confidential / Released 90 / 82 GSM/GPRS Module Series M66 Hardware Design M66_Hardware_Design Confidential / Released 91 / 82 GSM/GPRS Module Series M66 Hardware Design 10 Appendix C GPRS Multi-slot Classes Twenty-nine classes of GPRS multi-slot modes are defined for MS in GPRS specification. Multi-slot classes are product dependent, and determine the maximum achievable data rates in both the uplink and downlink directions. Written as 3+1 or 2+2, the first number indicates the amount of downlink timeslots, while the second number indicates the amount of uplink timeslots. The active slots determine the total number of slots the GPRS device can use simultaneously for both uplink and downlink communications. The description of different multi-slot classes is shown in the following table. Table 39: GPRS Multi-slot Classes Multislot Class Downlink Slots Uplink Slots Active Slots 1 2 3 4 5 6 7 8 9 10 11 12 1 2 2 3 2 3 3 4 3 4 4 4 1 1 2 1 2 2 3 1 2 2 3 4 2 3 3 4 4 4 4 5 5 5 5 5 M66_Hardware_Design Confidential / Released 92 / 82 GSM/GPRS Module Series M66 Hardware Design FCC Certification Requirements. According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a mobile device. And the following conditions must be met:
1. This Modular Approval is limited to OEM installation for mobile and fixed applications only. The antenna installation and operating configurations of this transmitter, including any applicable source-based time-
averaging duty factor, antenna gain and cable loss must satisfy MPE categorical Exclusion Requirements of 2.1091. 2. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the users body and must not transmit simultaneously with any other antenna or transmitter. 3.A label with the following statements must be attached to the host end product: This device contains FCC ID: XMR201902M66. 4.To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, maximum antenna gain (including cable loss) must not exceed:
GSM850:6.411dBi PCS1900:6.010dBi 5. This module must not transmit simultaneously with any other antenna or transmitter 6. The host end product must include a user manual that clearly defines operating requirements and conditions that must be observed to ensure compliance with current FCC RF exposure guidelines. For portable devices, in addition to the conditions 3 through 6 described above, a separate approval is required to satisfy the SAR requirements of FCC Part 2.1093 M66_Hardware_Design Confidential / Released 93 / 82 GSM/GPRS Module Series M66 Hardware Design If the device is used for other equipment that separate approval is required for all other operating configurations, including portable configurations with respect to 2.1093 and different antenna configurations. For this device, OEM integrators must be provided with labeling instructions of finished products. Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:
A certified modular has the option to use a permanently affixed label, or an electronic label. For a permanently affixed label, the module must be labeled with an FCC ID - Section 2.926 (see 2.2 Certification (labeling requirements) above). The OEM manual must provide clear instructions explaining to the OEM the labeling requirements, options and OEM user manual instructions that are required (see next paragraph). For a host using a certified modular with a standard fixed label, if (1) the modules FCC ID is not visible when installed in the host, or (2) if the host is marketed so that end users do not have straightforward commonly used methods for access to remove the module so that the FCC ID of the module is visible;
then an additional permanent label referring to the enclosed module:Contains Transmitter Module FCC ID: XMR201902M66 or Contains FCC ID: XMR201902M66 must be used. The host OEM user manual must also contain clear instructions on how end users can find and/or access the module and the FCC ID. The final host / module combination may also need to be evaluated against the FCC Part 15B criteria for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device. The users manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. In cases where the manual is provided only in a form other than paper, such as on a computer disk or over the Internet, the information required by this section may be included in the manual in that alternative form, provided the user can reasonably be expected to have the capability to access information in that form. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
M66_Hardware_Design Confidential / Released 94 / 82 GSM/GPRS Module Series M66 Hardware Design
(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the manufacturer could void the users authority to operate the equipment. To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with the module(s) installed and fully operational. For example, if a host was previously authorized as an unintentional radiator under the Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be compliant with the Part 15B unintentional radiator requirements. M66_Hardware_Design Confidential / Released 95 / 82
| frequency | equipment class | purpose | ||
|---|---|---|---|---|
| 1 | 2019-02-25 | 2402 ~ 2480 | DSS - Part 15 Spread Spectrum Transmitter | Original Equipment |
| 2 | 1850.2 ~ 1909.8 | PCB - PCS Licensed Transmitter |
| app s | Applicant Information | |||||
|---|---|---|---|---|---|---|
| 1 2 | Effective |
2019-02-25
|
||||
| 1 2 | Applicant's complete, legal business name |
Quectel Wireless Solutions Company Limited
|
||||
| 1 2 | FCC Registration Number (FRN) |
0018988279
|
||||
| 1 2 | Physical Address |
Building 5, Shanghai Business Park PhaseIII
|
||||
| 1 2 |
Shanghai, N/A 200233
|
|||||
| 1 2 |
China
|
|||||
| app s | TCB Information | |||||
| 1 2 | TCB Application Email Address |
c******@telefication.com
|
||||
| 1 2 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
|
||||
| 1 2 |
B1: Commercial mobile radio services equipment in the following 47 CFR Parts 20, 22 (cellular), 24,25 (below 3 GHz) & 27
|
|||||
| app s | FCC ID | |||||
| 1 2 | Grantee Code |
XMR
|
||||
| 1 2 | Equipment Product Code |
201902M66
|
||||
| app s | Person at the applicant's address to receive grant or for contact | |||||
| 1 2 | Name |
J**** x******
|
||||
| 1 2 | Telephone Number |
+8602******** Extension:
|
||||
| 1 2 | Fax Number |
+8621********
|
||||
| 1 2 |
j******@quectel.com
|
|||||
| app s | Technical Contact | |||||
| 1 2 | Firm Name |
TA Technology(Shanghai) Company, Limited
|
||||
| 1 2 | Name |
K****** X******
|
||||
| 1 2 | Physical Address |
No.145,Jintang Rd,Tangzhen IndustryPark,Pudong
|
||||
| 1 2 |
China
|
|||||
| 1 2 | Telephone Number |
86-21******** Extension:
|
||||
| 1 2 | Fax Number |
86-21********
|
||||
| 1 2 |
x******@ta-shanghai.com
|
|||||
| app s | Non Technical Contact | |||||
| 1 2 | Firm Name |
TA Technology(Shanghai) Company, Limited
|
||||
| 1 2 | Name |
j**** Z********
|
||||
| 1 2 | Physical Address |
No.145,Jintang Rd,Tangzhen IndustryPark,Pudong
|
||||
| 1 2 |
China
|
|||||
| 1 2 | Telephone Number |
86-21******** Extension:
|
||||
| 1 2 | Fax Number |
86-21********
|
||||
| 1 2 |
h******@ta-shanghai.com
|
|||||
| app s | Confidentiality (long or short term) | |||||
| 1 2 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
| 1 2 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
| if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
| app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
| 1 2 | Is this application for software defined/cognitive radio authorization? | No | ||||
| 1 2 | Equipment Class | DSS - Part 15 Spread Spectrum Transmitter | ||||
| 1 2 | PCB - PCS Licensed Transmitter | |||||
| 1 2 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | GSM/GPRS Module | ||||
| 1 2 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
| 1 2 | Modular Equipment Type | Single Modular Approval | ||||
| 1 2 | Purpose / Application is for | Original Equipment | ||||
| 1 2 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | Yes | ||||
| 1 2 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
| 1 2 | Grant Comments | Output power listed is conducted. This grant is valid only when the module is sold to OEM integrators and must be installed by the OEM or OEM integrators. The antenna's as listed in this application must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users may not be provided with the module installation instructions. OEM integrators and end-users must be provided with transmitter operating conditions for satisfying RF exposure compliance. | ||||
| 1 2 | Single Modular Approval. Output power listed is conducted. This grant is valid only when the module is sold to OEM integrators and must be installed by the OEM or OEM integrators. The antenna's as listed in this application must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users may not be provided with the module installation instructions. For the specific configurations in this filing the internal antenna and external gain, including cable loss, must not exceed 6.41 dBi at GSM850 and 6.01 at GSM1900as defined in 2.1091 for satisfying RF exposure compliance. OEM integrators and end-users must be provided with transmitter operating conditions for satisfying RF exposure compliance. This device contains functions that are not operational in U.S. Territories. This filing is only applicable for U.S. operations. | |||||
| 1 2 | Is there an equipment authorization waiver associated with this application? | No | ||||
| 1 2 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
| app s | Test Firm Name and Contact Information | |||||
| 1 2 | Firm Name |
TA Technology (Shanghai) Co., Ltd.
|
||||
| 1 2 | Name |
M**** L****
|
||||
| 1 2 | Telephone Number |
86-21********
|
||||
| 1 2 |
l******@ta-shanghai.com
|
|||||
| Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 1 | 1 | 15C | 2402.00000000 | 2480.00000000 | 0.0050000 | ||||||||||||||||||||||||||||||||||||
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 2 | 1 | 22H | 824.2 | 848.8 | 1.845 | 0.02268 ppm | 249KGXW | ||||||||||||||||||||||||||||||||||
| 2 | 2 | 24E | 1850.2 | 1909.8 | 0.845 | 0.01321 ppm | 248KGXW | ||||||||||||||||||||||||||||||||||
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC