User's Manual
HiLo3G-850 User Manual
04 March 2011 - Page 2 / 36
SOMMAIRE / CONTENTS
1. OVERVIEW ................................................................................................................................................................... 5
1.1. Document Objectives .............................................................................................................................................. 5
1.2. Reference Documents ............................................................................................................................................. 5
1.3. Document Modifications ........................................................................................................................................ 5
1.4. Conventions ............................................................................................................................................................ 5
2. Block Diagram ................................................................................................................................................................ 6
3. Functional Integration ..................................................................................................................................................... 7
3.1. How to connect a SIM card .................................................................................................................................... 7
3.2. Connect Audio ........................................................................................................................................................ 9
3.2.1 PCM Digital Audio ............................................................................................................................................. 9
3.2.2 Analog Audio ................................................................................................................................................... 12
3.2.2.1 Microphone Note .............................................................................................................................................. 12
3.2.2.2 Note for Speaker ............................................................................................................................................... 12
3.2.2.3 Recommended Microphone Characteristics ..................................................................................................... 13
3.2.2.4 Recommended Speaker Characteristics ............................................................................................................ 14
3.3 PWM ..................................................................................................................................................................... 15
3.3.1 PWM for Buzzer connection ............................................................................................................................ 15
3.3.2 Network LED ................................................................................................................................................... 15
3.4 Power Requirements ............................................................................................................................................. 16
3.5 UART ................................................................................................................................................................... 16
3.5.1 Complete V24—Connection HiLo3G-850 -host .............................................................................................. 16
3.5.2 Complete V24 Interface with PC ...................................................................................................................... 17
3.5.3 Partial V24 (RX-TX-RTS-CTS)—Connection HiLo3G-850 -host .................................................................. 18
3.5.4 Partial V24 (RX-TX)—Connection HiLo3G-850 -host ................................................................................... 19
3.6 GPIO ..................................................................................................................................................................... 20
3.7 ADC ...................................................................................................................................................................... 21
3.8 Backup Battery ..................................................................................................................................................... 21
3.8.1 Backup Battery Function Feature ..................................................................................................................... 21
3.8.2 Charge by Internal HiLo3G-850 Charging Function ........................................................................................ 21
3.8.3 Backup Battery Technology ............................................................................................................................. 22
3.8.3.1 Capacitor Battery .............................................................................................................................................. 22
3.9 USB ...................................................................................................................................................................... 22
4. Power Management ...................................................................................................................................................... 22
4.1 Power Modes ........................................................................................................................................................ 22
4.2 Module Power up .................................................................................................................................................. 23
4.2.1 PWON Power up .............................................................................................................................................. 23
4.2.1.1 IO DC Presence before Power on ....................................................................................................................... 24
4.3 Power on and Sleep Diagrams .............................................................................................................................. 24
4.4 Module Power off ................................................................................................................................................. 26
4.4.1 UART Interface ................................................................................................................................................ 27
4.4.2 USB Interface ................................................................................................................................................... 27
4.5 Sleep Mode ........................................................................................................................................................... 27
5. ESD & EMC Recommendation .................................................................................................................................... 27
5.1 Handling HiLo3G-850 .......................................................................................................................................... 28
5.2 ESD Recommendations ........................................................................................................................................ 28
5.2.1 Avoid ESD ........................................................................................................................................................ 28
5.3 EMC recommendations ........................................................................................................................................ 28
6. Radio Integration .......................................................................................................................................................... 28
6.1 Antenna Connection ............................................................................................................................................. 29
6.1.1 Antenna Connector ........................................................................................................................................... 29
6.1.2 Spring Contact .................................................................................................................................................. 29
6.1.3 Antenna Notice ................................................................................................................................................. 29
6.2 Ground Link Area ................................................................................................................................................. 30
6.3 Layout ................................................................................................................................................................... 30
6.4 Mechanical Surrounding ....................................................................................................................................... 31