MEIG SLM758, Hardware Design Manual

Page: 5 / 84

MeiG Smart product technical information
SLM758
Hardware Design Guide
Page 5
Contents
1. Introduction .......................................................................................................................................................... 8
2. Module overview .................................................................................................................................................. 8
2.1 Summary of features .................................................................................................................................... 10
2.2 Block diagram ............................................................................................................................................. 12
3. Module Package ..................................................................................................................................................... 13
3.1.Pin distribution diagram ............................................................................................................................. 13
3.2. Pin definitions .............................................................................................................................................. 14
3.3. Mechanical Dimensions .............................................................................................................................. 30
4. Interface application .............................................................................................................................................. 31
4.1. Power Supply .............................................................................................................................................. 31
4.1.1. Power Pin ................................................................................................................................................. 33
4.2. Power on and off ......................................................................................................................................... 34
4.2.1. Module Boot ............................................................................................................................................. 34
4.2.2. Module Shutdown .................................................................................................................................... 35
4.2.2.1 PWRKEY Shutdown ............................................................................................................................. 35
4.2.3.Module Reset ............................................................................................................................................. 36
4.3. VCOIN Power ............................................................................................................................................. 37
4.4. Power Output .............................................................................................................................................. 38
4.5. Serial Port .................................................................................................................................................... 38
4.6. MIPI Interface ............................................................................................................................................. 41
4.6.1. LCD Interface .......................................................................................................................................... 41
4.6.2.MIPI Camera Interface ........................................................................................................................... 45
4.7.Resistive Touch Interface ............................................................................................................................ 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 ......................................................................................................................... 52
4.9.5.I2S Interface .............................................................................................................................................. 53
4.10. USB Interface ............................................................................................................................................ 53
4.10.1. USB OTG ................................................................................................................................................ 54
4.11. Charging Interface .................................................................................................................................... 55
4.11.1. Charging Detection ................................................................................................................................ 55
4.11.2. Charge Control ...................................................................................................................................... 55
4.11.3. BAT_CON_TEM ................................................................................................................................... 55
4.12 UIM Card Interface ................................................................................................................................... 56
4.13. SD Card Interface ..................................................................................................................................... 57
4.14 I2C Bus Interface ....................................................................................................................................... 57
4.15 Analog to Digital Converter (ADC) .......................................................................................................... 58
4.16. PWM .......................................................................................................................................................... 58
4.17. Motor ......................................................................................................................................................... 58
4.18 Antenna Interface ...................................................................................................................................... 59
4.18.1 Main Antenna .......................................................................................................................................... 59
4.18.2 DRX Antenna .......................................................................................................................................... 60
4.18.3 GPS Antenna ........................................................................................................................................... 61
4.18.4 WiFi/BT antenna ..................................................................................................................................... 61
5.PCB Layout ............................................................................................................................................................. 63
5.1. Module PIN distribution ............................................................................................................................ 63
5.2. PCB Layout Principles ............................................................................................................................... 63
5.2.1. Antenna ..................................................................................................................................................... 63
5.2.2 Power Supply ............................................................................................................................................. 64
5.2.3. SIM Card .................................................................................................................................................. 64
5.2.4. MIPI .......................................................................................................................................................... 65
5.2.5. USB ............................................................................................................................................................ 65
5.2.6.Audio .......................................................................................................................................................... 65
5.2.7. Other ......................................................................................................................................................... 66