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
