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MEIG SLM156, Hardware Design Manual

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                                                                                  MeiG_SLM156_Hardware  Design  Manual 

 

MeiG Smart Technology Co., Ltd 

40/63 

 

 

4 GNSS Receiver 

4.1  General Description 

SLM156 includes an integrated embedded GNSS solution that supports Gen8C-Lite (GPS, GLONASS, 

BeiDou). 

SLM156 module supports standard NMEA-0183 protocol, and outputs NMEA sentences with 1Hz via 

USB interface by default. 

 

4.2  GNSS Performance 

The following table shows SLM150 GNSS performance. 

Table 19    GNSS performance 

Parameter   

Description    Performance index 

Positioning accuracy (open) 

Horizon   

TBD 

Altitude   

TBD 

Speed accuracy 

Speed   

TBD 

First positioning time TTFF 

Cold start 

TBD 

Warm start 

TBD 

Hot start 

TBD 

Sensitivity 

Capturing   

TBD 

Tracking   

TBD 

Serial output baud rate 

300bit/s~230400bit/s 

GPS receiving 

12 channel, GPS L1(1575.42MHz), C/A code 

Data update rate 

1Hz 

Data format 

NMEA 0183 

Summary of Contents for SLM156

Page 1: ...MeiG_SLM156_ Hardware Design Manual Controlled Version Number V1 0 Release Date 2019 08 01...

Page 2: ...umes no responsibility for the merchantability and fitness for a particular purpose or any indirect extraordinary or consequential losses Confidentiality Claim The information contained in this docume...

Page 3: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 2 63 Revision History Version Date Reason for Revision V1 0 2019 08 01 Establish for the first version...

Page 4: ...ght Mode 22 3 5 2 Power Saving Mode PSM 23 3 5 3 Extent Idle Mode Discontinuous Receiving 23 3 6 Power Supply 24 3 6 1 Power Supply Pins 24 3 6 2 Decrease Voltage Drop 25 3 6 3 VDD_EXT Voltage Output...

Page 5: ...Voltage 48 6 2 Power Rated Parameter 48 6 3 Working Temperature 49 6 4 Electrical Characteristics of Interface Operation Status 49 6 5 Module Power Consumption Range 50 6 6 Transmission Power 51 6 7 R...

Page 6: ...14 Activity status of NET_STATUS 34 Table 15 STATUS pin definition 35 Table 16 ADC pin description 36 Table 17 DLOAD pin description 37 Table 18 Pin description of PCM interface 39 Table 19 GNSS perf...

Page 7: ...f Network Indication 35 Figure 13 Reference Circuit of STATUS 36 Figure 14 Reference Circuit of STATUS 36 Figure 15 Reference Circuit of DLOAD Interface 37 Figure 16 Short Frame Mode Timing 38 Figure...

Page 8: ...air interface and hardware interface which are connected with your application The document can help you quickly understand SLM156 interface specifications electrical and mechanical details and other...

Page 9: ...e use of mobile terminal device RF interference will cause medical equipment to be abnormal so mobile terminal device may need to be turned off Mobile terminal device cannot always be effectively conn...

Page 10: ...hapter 1 introduces safety information purpose of the document and revising records Chapter 2 describes basic functions and main features of SLM156 wireless module Chapter 3 describes functions featur...

Page 11: ...B28 B66 B71 B85 Cat M Class5 B1 B2 B3 B4 B5 B8 B12 B13 B14 B18 B19 B20 B2 5 B26 B27 B28 B66 B85 EGPRS GSM850 EGSM900 D CS1800 PCS1900 Non supportive GPS GLONASS BeiDou Compass Galileo QZSS Using advan...

Page 12: ...DGE multi slot grade 33 default as 33 Support GMSK and 8 PSK Download coding scheme CS 1 4 and MCS 1 9 Upload coding scheme CS 1 4 and MCS 1 9 EDGE maximum download rate 296kbps maximum upload rate 23...

Page 13: ...ted operating temperature 40 85 Storage temperature 45 90 Software upgrade USB interface RoHS All hardware components fully comply with the EU RoHS standard humidity 5 95 ESD VBAT GND air discharge 10...

Page 14: ...Ltd 13 63 2 3 Evaluation Board In order to help you develop applications with SLM156 MEIG supplies an evaluation board USB data cable antenna and other peripherals to control or test the module See M...

Page 15: ...in and provides the following functional interfaces Power supply interface USB2 0 High Speed interface UART interface USIM SIM card interface support 1 8V Hardware reset interface Indicator interface...

Page 16: ...ART CTS UART_RTS UART_TX STATUS PWM RESERVED GND MLCK DLOAD GND PCM_CLK GNSS_EN RESOUT_N NETLIGHT GND GND GND GND GND GNSS_ANT GND GND GND GND MAIN_ANT GND GND GND GND USIM_DETECT USIM_CLK USIM RST GN...

Page 17: ...ut PO Power output AI Analog input AO Analog output OD Open drain Table 4 Pin description Power Pin name I O Description DC features Note VBAT 59 60 61 PI Power supply for module baseband Vmax 4 2V Vm...

Page 18: ...nused keep it open NETLIGHT 16 O D Indicate network state of the module SINK current should be less than 10mA OD output external pull up is needed if unused keep it open USB interface Pin name Pin num...

Page 19: ...V 1 8V power domain if unused keep it open UART_TX 40 D O Module sends data VOLmax 0 45V VOHmin 1 35V 1 8V power domain if unused keep it open UART_CTS 43 D O Module clears sending data VOLmax 0 45V V...

Page 20: ...keep it open SPI interface SPI_MISO 32 DI SPI MISO VOLmax 0 45V VOHmin 1 35V 1 8V power domain if unused keep it open SPI_MOSI 31 D O SPI MOSI VOLmax 0 45V VOHmin 1 35V 1 8V power domain if unused ke...

Page 21: ...ax 2 0V External 1 8V pull up is required In high level the module is waken up in low level the module enters into sleep mode if unused keep it open AP_READY 17 DI application processor sleep mode det...

Page 22: ...x 0 5V 1 8V power domain if unused keep it open SENSOR_INT 46 DI Sensor interrupt input VIHmax 2 1V VIHmin 1 3V VILmax 0 5V 1 8V power domain if unused keep it open PWM 38 D O Pulse width modulation V...

Page 23: ...e PMU stops supplying power to baseband and RF software is inactive and the serial interface is not accessible Power saving mode PSM Modules can lower self power consumption through entering PSM PSM i...

Page 24: ...tically 3 5 3 Extent Idle Mode Discontinuous Receiving SLM156 can use e I DRX to lower its power consumption The power consumption of e I DRX is higher than PSM but compared with PSM it improve the ac...

Page 25: ...correlative with power supply and switch Related interfaces are as follows Table 6 Related power supply interfaces Pin name Pin number Description Min Typical Max Unit VBAT 59 60 61 Module baseband po...

Page 26: ...h of lines should not be less than 2mm In addition in order to guarantee the stability of power it is recommended to add zener diode with 5 1V and power over 0 5W onto the power The reference circuit...

Page 27: ...off the module VIHmax 2 1V VIHmin 1 3V VILmax 0 5V When SLM156 is in power down mode it can be turned on to normal mode by driving the POWER_ON OFF pin to a low level for at least 100ms It is suggeste...

Page 28: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 27 63 Timing of turning on the module is illustrated as follows Figure 5 Timing of Turning on Module Note Tnote 30ms...

Page 29: ...n procedure after POWER_ON OFF is released The power down time is illustrated in the following figure Figure 6 Timing of Turning off Module 3 8 Reset Fuction AT command can be used to reset SLM156 3 8...

Page 30: ...clock signal USIM_RST 65 DO USIM card reset signal VDD_AUDIO 66 PI USIM POWER 1 8V USIM_PRESENT 68 DI USIM card plugging detection Require to pull up to1 8V SLM156 module supports USIM card hot pkugg...

Page 31: ...TA USIM_CLK and USIM_RESET line In order to improve the antistatic ability and offer good ESD protection it is recommended to add TVS whose parasitic capacitance should be less than 15pF on USIM_VCC U...

Page 32: ...0 High Speed interface k Table 9 USB interface description Name Pin name I O Description Note USB_DM 50 IO USB differential data signal Require 90 differential impedance USB_DP 49 IO USB differential...

Page 33: ...ements and keeping away from the interference signal as far as possible Do not trace the USB line in the crystal oscillator oscillator magnetic device and RF signal it is recommended to trace inner di...

Page 34: ...data 1 8V power domain UART_CTS 43 DO Module clears sending If unused keep it open UART_RTS 42 DI DTE asks to send data If unused keep it open Table 11 Pin description of debugging interface Pin name...

Page 35: ...dication pins can be used to drive a network status indicator LED SLM156 provides two pins The following tables describe pin STATUS and NET_STATUS The following two tables show the definition and logi...

Page 36: ...re 11 Reference Circuit of Network Indication GPIO controlled can also be used the other reference circuit is shown as follows Figure 12 Reference Circuit of Network Indication 3 13 Status Indicaiton...

Page 37: ...om one of them 2K VBAT STATUS Figure 13 Reference Circuit of STATUS Figure 14 Reference Circuit of STATUS 3 14 ADC Function SLM156 provides one analogy to digital conventers Using AT QADC 0 can read t...

Page 38: ...odule can update software through USB interface Table 17 DLOAD pin description Pin name Pin number I O Description Voltage range DLOAD 28 DI Mandatory download mode control valid in high level 1 8V po...

Page 39: ...ong frame mode data do sampling in PCM_CLK falling edge and send in rising edge PCM_SYNC falling edge represents high effective bits PCM_CLK only supports 128 kHz PCM_CLK and 8kHz 50 duty ratio PCM_SY...

Page 40: ...CM data input 1 8V power domain PCM_SYNC 23 IO PCM data simultaneous signal 1 8V power domain I2C_SCL 45 OD I2C clock External pull up of 1 8V is required I2C_SDA 44 OD I2C data External pull up of 1...

Page 41: ...via USB interface by default 4 2 GNSS Performance The following table shows SLM150 GNSS performance Table 19 GNSS performance Parameter Description Performance index Positioning accuracy open Horizon...

Page 42: ...ain antenna and the diversity antenna Noisy digital circuits such as the USIM card USB interface Camera module Display connector and SD card should be kept away from the antenna Use ground vias around...

Page 43: ...that you use a 50 impedance antenna that matches the RF connector of the module It is suggested that you chose RF adapter carefully on application end It is necessary to select the smallest possible l...

Page 44: ...98 MHz Band18 860 874 9MHz 815 829 9MHz Band19 875 889 9MHz 830 844 9MHz Band20 791 821 MHz 832 862 MHz Band25 1930 1995 MHz 1850 1915 MHz Band26 859 894MHz 814 849MHz Band27 852 869 MHz 807 824 MHz B...

Page 45: ...gure 19 Reference Circuit GNSS antenna reference design is shown as below Figure 20 GNSS Antenna Reference Circuit Note 1 You can choose external LDO power supply according to active antenna 2 You can...

Page 46: ...1615MHz Polarization RHCP or linear VSWR 2 Typ Passive antenna gain 0 dBi Active antenna noise coefficient 1 5 dB Active antenna gain 2 dBi Active antenna embedded LNA gain 20 dB typical value Active...

Page 47: ...iG Smart Technology Co Ltd 46 63 5 3 2 Recommended RF Connector in Antenna Installation If you choose to use RF connector to connect antenna Hirose UF L R SMT connector is recommended Figure 21 Connec...

Page 48: ...series connecting line can be an alternative to UF L R SMT Figure 22 UF L LP Series Connecting Line The following figure shows the installation dimension of connection line and connector Figure 23 In...

Page 49: ...t Limit voltage range of SLM156 are shown as below Table 23 Limit voltage range Parameter Min Max Unit VBAT_BB 0 3 4 7 V VBAT_RF 1 2 6 V USB_VBUS 0 3 5 5 V Digital pin voltage 0 3 2 3 V 6 2 Power Rate...

Page 50: ...pplications under certain temperature conditions Modules beyond this range may not work or are damaged Table 25 Temperature range Parameter Min Typical Max Unit Operating temperature 30 25 75 Limited...

Page 51: ...ty mode AT CFUN 0 no connection between interface and USB 0 8 mA Power saving mode PSM PSM LTE Cat M1 network 10 4 uA PSM LTE Cat NB1 network 9 8 uA Idle mode DRX 1 28s LTE Cat M1 network No connectio...

Page 52: ...B25 B26 B27 B28 B66 B71 B85 20dBm 2 7dB 44dBm GSM850 GSM900 33dBm 2dB 5dBm 5dB DCS1800 PCS1900 30dBm 2dB 0dBm 5dB GSM850 GSM900 8 PSK 27dBm 3dB 5dBm 5dB DCS1800 PCS1900 8 PSK 26dBm 3dB 0dBm 5dB 6 7 R...

Page 53: ...102 8 LTE B66 supportive TBD TBD LTE B71 supportive TBD TBD LTE B85 supportive TBD TBD Network type band main diversity GSM sensitivity 3GPP dBm GSM GSM850 GS M900 supportive Non supportive 102 DCS18...

Page 54: ...ss 8KV 10KV test level 2 testing EVB s SIM card slot under shut down mode ESD meets Contact discharge should pass 4KV test level Air discharge should pass 8KV test level 3 other interfaces of the modu...

Page 55: ...iG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 54 63 7 Mechanical Dimensions 7 1 Mechanical Dimensions of the Module Figure 24 Dimension of the Module from Top View and Side View unit m...

Page 56: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 55 63 Figure 25 Dimension of the module from Bottom View unit mm...

Page 57: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 56 63 7 2 Recommended Packaging Figure 26 Recommended Packaging unit mm...

Page 58: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 57 63 7 3 Top View of the Module Figure 27 Top View of the Module 7 4 Bottom View of the Module Figure 28 Bottom View of the Module...

Page 59: ...eflow soldering or other high temperature processes must be Stored at 10 RH Mounted within 72 hours at factory conditions of 30 60 RH 3 Devices require baking before mounting if Humidity indicator car...

Page 60: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 59 63 8 2 Manufacturing and Welding Figure 29 Reflow Soldering Temperature Profile...

Page 61: ...MeiG_SLM156_Hardware Design Manual MeiG Smart Technology Co Ltd 60 63 8 3 Packaging SLM156 uses pallet packaging Specifications are as follows Figure 30 Pallet Packaging Unit mm...

Page 62: ...service process manual 9 2 Terms and Abbreviations Table 33 Terms and abbreviations Abbreviation Description AMR Adaptive Multi rate BER Bit Error Rate BTS Base Transceiver Station PCI Peripheral Comp...

Page 63: ...Packet Access IEC International Electro technical Commission IMEI International Mobile Equipment Identity MEID Mobile Equipment Identifier I O Input Output ISO International Standards Organization ITU...

Page 64: ...A Time Division Synchronous Code Division Multiple Access TD LTE Time Division Long Term Evolution FDD LTE Frequency Division Duplexing Long Term Evolution Vmax Maximum Voltage Value Vnorm Normal Volt...

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