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MeiG Smart product technical information

SLM758

Hardware Design Guide

Page 52

2.  We  recommend  that  the  headphone  detection  pin  HS_DET  and  HPH_L  form  a  detection
circuit  (the  connection  method  in  the  above  figure),  because  HPH_L  has  a  pull-down  resistor
inside the chip, which can ensure that HS_DET is low when connected with HPH_L, if the user
will HS_DET and HPH_R To connect, please reserve a 1K pull-down resistor on HPH_R.
3 The standard of the headphone interface is the European standard OMPT. If you need to design
the  American  standard  CTIA  interface,  you  need  to  swap  the  GND  and  MIC  signals  for  the
network.  If  you  want  to  be  compatible  with  both  headset  standards,  you  need  an  external
dedicated chip, such as the TI-TS3A226AE.

4.9.4.Speaker Interface Circuit

The module integrates a Class-D audio amplifier with an output power of 0.85W and an

output signal of SPKR_OUT_P / SPKR_OUT_M.

图

4.24

：用内部音频功放推荐电路

It is also possible to add an audio amplifier externally, using CDC_HPH_R as a single-ended

input signal, and the reference circuit is shown below.

Figure 4.25

：

Recommended circuit with external audio amplifier

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Содержание SLM758

Страница 1: ...roduct technical information SLM758 Hardware Design Guide Page 1 SLM758 Hardware Design Guide Released Date 2018 11 File name SLM758 Hardware Design Guide Version Number V1 08 Company MeiG Smart Techn...

Страница 2: ...ntation or warranty either express or implied for any content in this document and will not be liable for any specific merchantability and applicable or any indirect particular and collateral damage C...

Страница 3: ...MeiG Smart product technical information SLM758 Hardware Design Guide Page 3 SLM758 Hardware Design Guide_V1 08...

Страница 4: ...ation method The company does not assume responsibility for property damage or personal injury caused by improper operation of the user Users are requested to develop the corresponding products accord...

Страница 5: ...49 4 8 CapacitiveTouch Interface 49 4 9 Audio Interface 49 4 9 1Receiver Interface Circuit 50 4 9 2 Microphone receiving Circuit 50 4 9 3 Headphone Interface Circuit 51 4 9 4 Speaker Interface Circuit...

Страница 6: ...rmance 72 6 14 BT Main RF Prformance 73 6 15 GNSS Main RF Performance 73 7 Production 74 7 1 Top And Bottom Views Of The Module 74 7 2 Recommended Soldering Furnace Temperature Curve 74 7 3 Humidity S...

Страница 7: ...1 01 Correction Guo Qianghua 2017 11 01 1 02 Modify information Zheng Lei 2017 11 01 1 03 Modify information Zheng Lei 2018 1 5 1 04 Modify information Zheng Lei 2018 6 14 1 05 Modify frequency band i...

Страница 8: ...design mobile communication applications 2 Module overview SLM758 series core board uses the MSM8953 of Qualcomm Snapdragon 600 series for its main chip and its CPU is made of 14nm FinFET built in 64b...

Страница 9: ...form handheld terminals and other products The physical interface of the module is a 272 pin pad that provides the following hardware interfaces Four 1 8V UART serial ports supporting four or two wire...

Страница 10: ...E 802 11b g n a 2 4G 5G Bluetooth BT 4 1 GNSS GPS Beidou Glonass Galileo Data Access TD LTE Cat4 TD LTE 117 30Mbps FDD LTE Cat4 FDD LTE 150 50Mbps DC HSPA 42 11 2Mbps TD HSPA 2 8 2 3Mbps EVDO Rev A 3...

Страница 11: ...t for emergency downloads BLSP ports 7 ports BLSP2 8 4 bits each multiplexed serial interface functions UART 4 BLSP2 BLSP4 6 support UART up to 4 Mbps I2C 6 BLSP2 6 BLSP8 support I2C These BLSPs use b...

Страница 12: ...ts the main functional parts of the module MSM8953 baseband chip PM8953 power management chip PMI8952 power management chip WCN3660B Compatible with WCN3680B WIFI BT FM three in one chip Antenna inter...

Страница 13: ...MeiG Smart product technical information SLM758 Hardware Design Guide Page 13 Figure 2 1 module function block diagram 3 Module Package 3 1 Pin distribution diagram...

Страница 14: ...oduct technical information SLM758 Hardware Design Guide Page 14 Figure 3 1 module pin diagram top view 3 2 Pin definitions table 3 1 Pin description Pin number Pin number I O Description Comment The...

Страница 15: ...y IO and other power supply 100mA VREG_L6_1P8 139 O 1 8 V power output standby will be closed used for Camera LCD and other small current power supply 100mA VREG_L10_2P8_SENSOR 138 O 2 8V power output...

Страница 16: ...negative1 Each normal 20mA max 30mA LCD_BL_LED_K2 6 AI LCD Series backlight negative2 LCD_BL_LED_A 7 PO LCD Series backlight positive Sub display interface MIPI MIPI_DSI1_CLK_N 242 O MIPI_LCD2 clock...

Страница 17: ...I2_CLK_P 40 I Front Camera MIPI clock MIPI_CSI2_CLK_N 41 I MIPI_CSI2_LANE0_P 42 I Front Camera MIPI data MIPI_CSI2_LANE0_N 43 I MIPI_CSI2_LANE1_P 191 I MIPI_CSI2_LANE1_N 192 I MIPI_CSI2_LANE2_P 46 I M...

Страница 18: ...epth Camera reset GPIO28_CAM_MCLK2 264 I O Depth Camera main clock Audio Interface MIC_IN1_M 123 I The main MIC negative MIC_IN1_P 122 I The main MIC positive MIC_IN2_P 132 I Headphone MIC positive GN...

Страница 19: ...nly be used for SENSOR GPIO15_SENSOR_I2C4_SCL 18 I O GPIO6_I2C2_SDA 13 I O Universal I2C signal GPIO7_I2C2_SCL 14 I O CAM_I2C_SDA1 96 I O Special I2C signal can only be used for CAM CAM_I2C_SCL1 95 I...

Страница 20: ...the compass interrupt signal GPIO45_GYRO_INT 22 I O The default configuration is the gyroscope interrupt signal GPIO46_PRESSURE_INT 221 I O The default configuration is the pressure sensor interrupt s...

Страница 21: ..._THERM 149 I Battery temperature detection the battery NTC terminal battery terminal NTC resistance is 10K such as no battery temperature detection requirement need to increase 10K resistance to GND P...

Страница 22: ...18 GPIO15_SENSOR_I2C4_SCL GPIO_15 B PD nppukp Configurable I O SENSOR I2C SCL 19 GPIO42_ACCL_INT1 GPIO_42 B PD nppukp Configurable I O ACC INT 20 GPIO43_ALSP_INT_N GPIO_43 B PD nppukp Configurable I O...

Страница 23: ...K_N AI MIPI camera serial interface 0 clock 51 MIPI_CSI0_LANE2_P AI MIPI camera serial interface 0 lane2 52 MIPI_CSI0_LANE2_N AI MIPI camera serial interface 0 lane2 53 MIPI_CSI0_LANE3_P AI MIPI camer...

Страница 24: ...83 GND GND GND 84 GPIO26_CAM_MCLK0 GPIO_26 B PD nppukp Configurable I O main CAM MCLK 85 GPIO40_MCAM_RST_N GPIO_40 B PD nppukp Configurable I O main CAM RESET 86 GPIO39_MCAM_PWD_N GPIO_39 B PD nppukp...

Страница 25: ...t plus for audio PA 116 GND GND GND 117 MIC_BIAS2 AO Microphone bias 2 for earphone mic 118 MIC_BIAS1 AO Microphone bias 1 119 GND GND GND 120 MAIN_ANT AI RF signal for main ANT 121 GND GND GND 122 MI...

Страница 26: ...fault 3 8V 152 VBAT PI PO Battery 3 5V 4 2V default 3 8V 153 VBAT PI PO Battery 3 5V 4 2V default 3 8V 154 GND GND GND 155 GND GND GND 156 GND GND GND 157 VBUS PI PO USB Voltage 158 VBUS PI PO USB Vol...

Страница 27: ...E0_N AO MIPI display serial interface 0 lane0 190 MIPI_DSI0_LANE0_P AO MIPI display serial interface 0 lane0 191 MIPI_CSI2_LANE1_P AI MIPI camera serial interface 2 lane1 192 MIPI_CSI2_LANE1_N AI MIPI...

Страница 28: ...46 B PD nppukp Configurable I O Pressure INT 222 GND GND GND 223 GND GND GND 224 GND GND GND 225 MIPI_DSI1_LANE0_P AO MIPI display serial interface 1 lane0 226 MIPI_DSI1_LANE0_N AO MIPI display serial...

Страница 29: ...le I O UART5 RX 256 GPIO16_UART5_TX GPIO_16 B PD nppukp Configurable I O UART5 TX 257 GND GND GND 258 GPIO3_SPI1_CLK GPIO_3 B PD nppukp Configurable I O SPI CLK 259 GPIO2_SPI1_CS GPIO_2 B PD nppukp Co...

Страница 30: ...input H High voltage tolerant NP pdpukp defaultno pull with programmable options following the colon PD nppukp defaultpulldown with programmable options following the colon PU nppdkp defaultpullup wi...

Страница 31: ...MeiG Smart product technical information SLM758 Hardware Design Guide Page 31 Figure 3 2 Module 3D size unit mm 4 Interface application 4 1 Power Supply...

Страница 32: ...33PF and 10PF capacitors can effectively remove high frequency interference To prevent damage to the chip due to ESD and surge it is recommended to use a suitable TVS tube and a 5 6V 500mW Zener diod...

Страница 33: ...is connected to the 149 pin BAT_THERM of the module and pulled down to GND to prevent the software from judging the abnormal battery temperature after the module is turned on resulting in shutdown Th...

Страница 34: ...e drop 4 2 Power on and off Do not turn on the module when the module s temperature and voltage limits are exceeded In extreme cases such operations can cause permanent damage to the module 4 2 1 Modu...

Страница 35: ...ware Design Guide Page 35 Figure 4 6 Booting with the button circuit The following figure is the boot timing description Figure 4 7 Using PWRKEY boot timing diagram 4 2 2 Module Shutdown Users can use...

Страница 36: ...her to perform the shutdown action The user can achieve a forced shutdown by pulling PWRKEY down for a long time pulling down for at least 15 seconds 4 2 3 Module Reset The SLM758 module supports a re...

Страница 37: ...ime 500 ms 4 3 VCOIN Power When VBAT is disconnected the user needs to save the real time clock The VCOIN pin cannot be left floating It should be connected to a large capacitor or battery When extern...

Страница 38: ...rive Current mA VREG_L2_1P1 0 375 1 5375 1 2 VREG_L5_1P8 1 75 3 337 1 80 500 VREG_L6_1P8 1 75 3 337 1 80 300 VREG_L11_SDC 1 75 3 337 2 95 500 VREG_L12_SDC 1 75 3 337 1 8 100 VREG_L14_UIM1 1 75 3 337 1...

Страница 39: ...TS GPIO15_SENSOR_I2C4_SCL 18 O UART4 Request To Send RTS GPIO16_UART5_TX 256 I UART5 Data Transmission GPIO17_UART5_RX 255 O UART5 Data Reception GPIO18_NFC_I2C5_SDA 254 I UART5 Clear To Send CTS GPIO...

Страница 40: ...o this two circuits Figure 4 14 TX Connection Diagram Figure 4 15 RX Connection Diagram Note When using Levels Isolation in Figures 14 and 15 it is necessary to use VREG_L5_1P8 as the pull up power su...

Страница 41: ...compatible screen design the module s LCD_ID pin or ADC pin can be used At the same time the module can provide 2 8V power to the LCD The LCD interface is as follows Table 4 5 Primary and secondary sc...

Страница 42: ...ht negative pole 2 LCD_BL_LED_A 7 PO LCD series backlight positive pole VREG_L6_1P8 139 O 1 8V power supply VREG_L17_2P85 137 O 2 8V power supply Secondary screen interface MIPI_DSI1_CLK_N 242 O MIPI_...

Страница 43: ...internal circuit of LCD If the internal divider of the LCD uses resistor divider please pay attention to the voltage to meet the high or low range of GPIO MIPI is a high speed signal line To avoid EMI...

Страница 44: ...backlight of the main LCD is driven inside the module It can directly use LCD_BL_LED_A LCD_BL_LED_K1 LCD_BL_LED_K2 to support up to 2 strings of 8 LEDs in total The backlight driving circuit of the s...

Страница 45: ...camera design with the main camera or as a dual camera design for the depth of field camera it can also be used as the MIPI interface scan head design The module provides the power required by the Cam...

Страница 46: ..._1P8 139 O 1 8V IOVDD VREG_L17_2P85 137 O 2 8V AFVDD Focus motor power supply VREG_L22_2P8 136 O 2 8V AVDD VREG_L23_1P175 200 O 1 2V DVDD Depth camera interface Name Pin Input output Description MIPI_...

Страница 47: ...e should be connected to the driver chip of CAMERA and the correct connection is as follows Figure 18 Correct CAMERA connection diagram The MIPI interface has a high rate The user should control the i...

Страница 48: ...d to pay attention to the position of the connector There will be a small person in the specification of the camera to indicate the imaging direction You need to ensure that the villain is standing on...

Страница 49: ...8 O Reset VREG_L5_1P8 140 O 1 8V Power supply VREG_L10_2P8_SENSOR 138 O 2 8V Power supply Note The interface definition of the capacitive touch can be adjusted by software and the user can change the...

Страница 50: ...are advised to use the following circuit according to the actual application to get better sound effects 4 9 1Receiver Interface Circuit The receiver interface circuit places the following devices ne...

Страница 51: ...to prevent ESD damage The HS_DET pin of the module can be set as an interrupt In software this pin is the earphone interrupt by default The user can use this pin to detect the plugging and unplugging...

Страница 52: ...hone interface is the European standard OMPT If you need to design the American standard CTIA interface you need to swap the GND and MIC signals for the network If you want to be compatible with both...

Страница 53: ...Table 4 9 Voltage input range during charging Name Description Minimum Typical Maximum Unit VBUS Input range 4 6 3 V The USB plug in detection of the module is realized by the VBUS and DP DM data line...

Страница 54: ...an provide USB OTG function The pins used in this function are as follows Table 4 10 USB OTG Pin Description Pin name Pin Description VBUS 157 158 159 5V charging input OTG output power USB_HS_D_M 145...

Страница 55: ...ol The SLM758 module can charge the over discharged battery The charging process includes trickle charge pre charge constant current and constant voltage charge When the VBAT voltage is lower than 3 4...

Страница 56: ...l card dual standby Support SIM card hot swap can automatically recognize 1 8V and 3 0V cards The figure below is the SIM recommended interface circuit In order to protect the SIM card it is recommend...

Страница 57: ...e as follows Table 4 11 I2C Interface Pin Description Name Pin Default function CAM_I2C_SDA0 105 Camera dedicated CAM_I2C_SCL0 104 GPIO14_SENSOR_I2C4_SDA 17 General purpose I2C default for sensor GPIO...

Страница 58: ...are as follows Table 4 12 ADC Performance Parameters Description Minimum Typical Maximum Unit Input Voltage Range 1 8 V ADC Resolution 15 bits Analog Input Bandwidth 100 kHz Sampling Frequency 2 4 MHz...

Страница 59: ...teristic microstrip line or strip line In order to facilitate antenna debugging and certification testing an RF connector and antenna matching network should be added The recommended circuit diagram i...

Страница 60: ...circuit diagram is as follows Figure 4 36 DRX Antenna Interface Connection Circuit In the figure R102 C103 and C104 are antenna matching devices and the specific component values can be determined aft...

Страница 61: ...Active Antennas 4 18 4 WiFi BT antenna The module provides the WiFi BT antenna pin RF_WIFI BT The antenna on the user s motherboard should be connected to the antenna pin of the module using a 50 ohm...

Страница 62: ...s between the antenna and the module output or if the RF test head is not needed in the design the antenna matching circuit can be simplified as shown below Figure 4 41 WIFI_BT antenna interface simpl...

Страница 63: ...esign requirements when using the SLM758 module is much higher than the previous 2G module please read this chapter carefully reduce the subsequent hardware debugging cycle When using the SLM758 modul...

Страница 64: ...e device It is relatively susceptible to interference Therefore in the layout first ensure that the SIM card is away from the antenna and the antenna extension cable inside the product Place it as clo...

Страница 65: ...atic protection please select a TVS tube with a parasitic capacitance of less than 1pF Please refer to the following notes when planning Layout The common mode inductor should be close to the side of...

Страница 66: ...d be routed according to the differential signal rules The conducted interference is mainly caused by the voltage drop of VBAT If the Audio PA is directly powered by VBAT it is easier to hear the zizi...

Страница 67: ...w shows the operating temperature range of the module Table 6 2 Module Operating Temperature Parameter Minimum Typical Maximum Unit Working temperature 25 75 Storage temperature 40 90 6 3 Working Volt...

Страница 68: ...High level 1 4 V Low level 0 6 V Effective time 2000 ms 6 7 VCOIN Feature Table 6 7 VCOIN Characteristics Parameter Description Minimum Typical Maximum Unit VCOIN IN VCOIN input voltage 2 3 3 25 V IR...

Страница 69: ...rotected against electrostatic discharge Therefore users must pay attention to electrostatic protection when producing assembling and operating modules 6 10 Module Operating Frequency Band The table b...

Страница 70: ...8 925 960 MHz 880 915 MHz TX 21450 21799 RX 3450 3799 LTE B9 1805 1880 MHz 1750 1785 MHz TX 21800 22149 RX 3800 4149 LTE B12 729 746MHz 699 716MHz TX 23010 23179 RX 5010 5179 LTE B13 746 756 MHz 777 7...

Страница 71: ...d receive sensitivity of the module and is tested under static conditions Table 6 11 Conducted Receive Sensitivity Frequency band Receive sensitivity typical Receive sensitivity maximum GSM850 EGSM900...

Страница 72: ...6 92 76 FDD 27 103 2 100 2 98 95 FDD 28 100 2 98 5 95 5 93 7 91 FDD 31 99 0 95 7 93 5 FDD 33 100 97 95 2 94 TDD 34 100 97 95 2 TDD 35 106 2 102 2 100 97 95 2 94 TDD 36 106 2 102 2 100 97 95 2 94 TDD 3...

Страница 73: ...was increased by 3DB and the Receiving sensitivityn was increased by 1 5db 6 14 BT Main RF Prformance The table below lists the main RF performance under BT conduction Table 6 14 Main RF performance p...

Страница 74: ...ded Soldering Furnace Temperature Curve Figure 49 Module recommended soldering furnace temperature curve 7 3 Humidity Sensitivity MSL The SLM758 module meets moisture sensitivity level 3 The dry packa...

Страница 75: ...ation risk Baking SMD packages can cause metal oxidation and if excessive can cause solderability problems during board assembly The temperature and time of the SMD package are baked thus limiting sol...

Страница 76: ...1280x720 Table 8 2 Support for Camera Model List Vendor Drive IC Specification JinshengXin Vision GC8024 8M JinshengXin Vision OV5670 5M Sunny optical S5K3L8 8M Sunny optical S5K5E8 5M Table 8 3 Supp...

Страница 77: ...14 bit Table 8 6 Support PS ALS Sensor Model List Vendor Model Specification LITEON LTR 553ALS 01 ALS PS Table 8 7 Support for Gyro Sensor Model List Vendor Model Specification Bosch BMI120 9 axis 16...

Страница 78: ...ystem Phase 2 Specification of the Subscriber Identity Module Mobile Equipment SIM ME interface 6 GSM 03 38 Digital cellular telecommunications system Phase 2 Alphabets and language specific informati...

Страница 79: ...quency RMS Root Mean Square value RX Receive Direction SIM Subscriber Identification Module SMS Short Message Service TDD Time Division Distortion TE Terminal Equipment also referred to as DTE TX Tran...

Страница 80: ...2 MISO RX 6 13 CS_N CTS SDA 7 14 CLK RTS SCL 8 232 MOSI 9 231 MISO 10 234 CS_N SDA 11 233 CLK SCL 12 15 MOSI TX 13 16 MISO RX 14 17 CS_N CTS SDA 15 18 CLK RTS SCL 16 256 MOSI TX 17 255 MISO RX 18 254...

Страница 81: ...your handheld terminal or mobile phone GSM mobile terminals operate under RF signals and cellular networks but are not guaranteed to be connected in all situations For example there is no credit or i...

Страница 82: ...ntenna 2 4GHz band Peak Gain 0 dBi 5 2GHz band Peak Gain 1 dBi 5 3GHz band Peak Gain 1 dBi 5 5GHz band Peak Gain 1 dBi 5 8GHz band Peak Gain 1 dBi Antenna type Fixed External Antenna BT Peak Gain 0 dB...

Страница 83: ...List of applicable FCC rules This module has been tested and found to comply with part 22 part 24 part 27 requirements for Modular Approval 10 5 Industry Canada Statement This device complies with Ind...

Страница 84: ...ain d antenne maximal autoris pour les appareils de la bande 5725 5825 MHz doit tre conforme la norme e i r p les limites sp cifi es pour un fonctionnement point point et non point point selon le cas...

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