User's Manual
Note d‘étude / Technical document :
URD1– OTL 5696.1– 003 / 72361 Edition 02
HILO 3G Application Note
17 January 2011 - Page 3 / 38
SOMMAIRE / CONTENTS
1. OVERVIEW ................................................................................................................................................................... 6
1.1. Document Objectives .............................................................................................................................................. 6
1.2. Reference Documents ............................................................................................................................................. 6
1.3. Document Modifications ........................................................................................................................................ 6
1.4. Conventions ............................................................................................................................................................ 6
2. Block Diagram ................................................................................................................................................................ 7
3. Functional Integration ..................................................................................................................................................... 8
3.1. How to connect a SIM card .................................................................................................................................... 9
3.2. Connect Audio ...................................................................................................................................................... 10
3.2.1 PCM Digital Audio ........................................................................................................................................... 10
3.2.2 Analog Audio ................................................................................................................................................... 13
3.2.2.1 Microphone Note .............................................................................................................................................. 13
3.2.2.2 Note for Speaker ............................................................................................................................................... 13
3.2.2.3 Recommended Microphone Characteristics ..................................................................................................... 14
3.2.2.4 Recommended Speaker Characteristics ............................................................................................................ 16
3.3 PWM ..................................................................................................................................................................... 16
3.3.1 PWM for Buzzer connection ............................................................................................................................ 16
3.3.2 Network LED ................................................................................................................................................... 16
3.4 Power Requirements ............................................................................................................................................. 17
3.5 UART ................................................................................................................................................................... 17
3.5.1 Complete V24—Connection HiLo3G -host ..................................................................................................... 18
3.5.2 Complete V24 Interface with PC ...................................................................................................................... 19
3.5.3 Partial V24 (RX-TX-RTS-CTS)—Connection HiLo3G -host ......................................................................... 20
3.5.4 Partial V24 (RX-TX)—Connection HiLo3G -host ........................................................................................... 21
3.6 GPIO ..................................................................................................................................................................... 22
3.7 ADC ...................................................................................................................................................................... 22
3.8 Backup Battery ..................................................................................................................................................... 23
3.8.1 Backup Battery Function Feature ..................................................................................................................... 23
3.8.2 Charge by Internal HiLo3G Charging Function ............................................................................................... 23
3.8.3 Backup Battery Technology ............................................................................................................................. 23
3.8.3.1 Capacitor Battery .............................................................................................................................................. 23
3.9 USB ...................................................................................................................................................................... 24
4. Power Management ...................................................................................................................................................... 24
4.1 Power Modes ........................................................................................................................................................ 24
4.2 Module Power up .................................................................................................................................................. 24
4.2.1 PWON Power up .............................................................................................................................................. 24
4.2.1.1 IO DC Presence before Power on ....................................................................................................................... 25
4.3 Power on and Sleep Diagrams .............................................................................................................................. 26
4.4 Module Power off ................................................................................................................................................. 28
4.4.1 UART Interface ................................................................................................................................................ 28
4.4.2 USB Interface ................................................................................................................................................... 28
4.5 Sleep Mode ........................................................................................................................................................... 28
5. ESD & EMC Recommendation .................................................................................................................................... 29
5.1 Handling HiLo3G ................................................................................................................................................. 29
5.2 ESD Recommendations ........................................................................................................................................ 29
5.2.1 Avoid ESD ........................................................................................................................................................ 29
5.3 EMC recommendations ........................................................................................................................................ 29
6. Radio Integration .......................................................................................................................................................... 30
6.1 Antenna Connection ............................................................................................................................................. 30
6.1.1 Antenna Connector ........................................................................................................................................... 30
6.1.2 Spring Contact .................................................................................................................................................. 30
6.1.3 Antenna Notice ................................................................................................................................................. 31
6.2 Ground Link Area ................................................................................................................................................. 31