Table Of Contents - SimCom SIM5218E Hardware Design

SIM5218E Hardware Design
Version history ........................................................................................................................................................... 2
1 Introduction............................................................................................................................................................. 5
1.1 Related documents ..............................................................................................................5
1.2 Terms and abbreviations......................................................................................................6
2 Product concept....................................................................................................................................................... 9
3 Application interface............................................................................................................................................. 13
3.1 SIM5218E pin description ................................................................................................15
3.2 Operating modes ...............................................................................................................18
3.3 Power supply.....................................................................................................................19
3.3.1 Power supply pins on the board-to-board connector ....................................................................... 20
3.3.2 Minimizing power losses ................................................................................................................ 20
3.3.3 Monitoring power supply ................................................................................................................ 21
3.4 Power up and power down scenarios ................................................................................21
3.4.1 Turn on SIM5218E.......................................................................................................................... 21
3.4.2 Turn off SIM5218E ......................................................................................................................... 22
3.5 Power saving .....................................................................................................................23
3.5.1 Minimum functionality mode.......................................................................................................... 23
3.5.2 Flight mode ..................................................................................................................................... 23
3.5.3 Sleep Mode ..................................................................................................................................... 24
3.5.4 Wake up SIM5218E from Sleep Mode............................................................................................ 24
3.6 RTC backup.......................................................................................................................25
3.7 Serial interface ..................................................................................................................26
3.8 Audio interfaces ................................................................................................................29
3.8.1 Speaker interface configuration....................................................................................................... 30
3.8.2 Microphone interfaces configuration .............................................................................................. 31
3.8.3 Earphone interface configuration .................................................................................................... 32
3.8.4 Referenced electronic characteristic................................................................................................ 32
3.8.5 Programming characteristic............................................................................................................. 33
3.9 USIM card interface..........................................................................................................38
3.9.1 USIM card application .................................................................................................................... 38
3.9.2 Design considerations for USIM card holder .................................................................................. 39
3.9.3 Embedded SIM card IC................................................................................................................... 40
3.10 I2C interface....................................................................................................................40
3.11 High speed USB interface ...............................................................................................40
3.12 Module Reset ..................................................................................................................41
3.13 General purpose input & output (GPIO) .........................................................................41
3.14 ADC interface .................................................................................................................43
SIM5218E_HD_V1.03
Contents
3
11.06.2009