User's Manual

6
1. Introduction ................................................................................................................................................................ 9
2. Module Overview ...................................................................................................................................................... 9
2.1 Summary of features ........................................................................................................................................ 9
2.2 Block diagram ................................................................................................................................................ 12
3. Module Encapsulation ............................................................................................................................................. 13
3.1 Pin distribution diagram ................................................................................................................................. 13
3.2 Pin definitions ................................................................................................................................................ 14
3.3 Mechanical Dimensions ................................................................................................................................... 1
4. Interface Application.................................................................................................................................................. 4
4.1 Power Supply ................................................................................................................................................... 4
4.1.1 Power Pin .............................................................................................................................................. 5
4.2 Power on and off ............................................................................................................................................. 6
4.2.1 Module Boot ......................................................................................................................................... 6
4.2.2 Module Shutdown ................................................................................................................................. 7
4.2.3 Module Reset ........................................................................................................................................ 7
4.3 VCOIN Power .................................................................................................................................................. 8
4.4 Power Output ................................................................................................................................................... 9
4.5 Serial Port ...................................................................................................................................................... 10
4.6 MIPI Interface ................................................................................................................................................ 12
4.6.1 LCD Interface ..................................................................................................................................... 12
4.6.2 MIFI camera Interface ........................................................................................................................ 14
4.7 Resistive Touch Interface ............................................................................................................................... 17
4.8 CapacitiveTouch Interface ............................................................................................................................. 17
4.9 Audio Interface .............................................................................................................................................. 18
4.9.1 Receiver Interface Circuit .................................................................................................................. 19
4.9.1 Microphone receiving Circuit ............................................................................................................. 19
4.9.2 Headphone Interface Circuit ............................................................................................................... 19
4.9.4 Speaker Interface Circuit ................................................................................................................... 20
4.9.5 I2S Interface ....................................................................................................................................... 21
4.10 USB Interface .............................................................................................................................................. 21
4.10.1 USB OTG ......................................................................................................................................... 22
4.11 Charging Interface ........................................................................................................................................ 23
4.11.1 Charging Detection ........................................................................................................................... 23
4.11.2 Charge Control ................................................................................................................................. 23
4.11.3 BAT _THERM ................................................................................................................................. 23
4.12 UIM Card Interface ...................................................................................................................................... 24
4.13 SD Card Interface ........................................................................................................................................ 24
4.14 I2C Bus Interface ........................................................................................................................................ 25
4.15 Analog to Digital Converter (ADC) ............................................................................................................ 25
4.16 PWM ............................................................................................................................................................ 25
4.17 Motor ........................................................................................................................................................... 26
4.18 Antenna Interface ........................................................................................................................................ 26
4.18.1 Main Antenna .................................................................................................................................. 26
4.18.2 DRX Antenna .................................................................................................................................. 27
4.18.3 GPS Antenna .................................................................................................................................... 28
4.18.4 WiFi/BT antenna .............................................................................................................................. 29
5. PCB Layout ............................................................................................................................................................. 30
5.1. Module PIN distribution ............................................................................................................................... 30
5.2. PCB layout principles ................................................................................................................................... 30
5.2.1. Antenna .............................................................................................................................................. 31
5.2.2 Power supply ....................................................................................................................................... 31
5.2.3. SIM card ............................................................................................................................................ 31
5.2.4. MIPI ................................................................................................................................................... 32
5.2.5. USB .................................................................................................................................................... 32
5.2.6.Audio .................................................................................................................................................. 32
5.2.7. Other .................................................................................................................................................. 33