Hardware Design V1.00

Smart Machine Smart Decision
SIM2000S_Hardware_Design_V1.00 3 2014-02-27
Contents
Version History............................................................................................................8
1. Introduction..........................................................................................................9
2. SIM2000S Overview............................................................................................9
2.1. SIM2000S Key Features .......................................................................................................9
2.2. Operating Mode .................................................................................................................. 11
2.3. Functional Diagram............................................................................................................. 11
3. Package Information.........................................................................................13
3.1. Pin out Diagram ..................................................................................................................13
3.2. Pin Description....................................................................................................................13
3.3. Package Dimensions ...........................................................................................................16
4. Application Interface.........................................................................................18
4.1. Power Supply ......................................................................................................................18
4.1.1. Power supply pin................................................................................................................................. 19
4.1.2. Monitoring Power Supply ................................................................................................................... 19
4.2. Power on/down Scenarios...................................................................................................19
4.2.1. Power on SIM2000S ........................................................................................................................... 19
4.2.2. Power down SIM2000S ...................................................................................................................... 21
4.2.3. Reset Function..................................................................................................................................... 22
4.3. Power Saving Mode............................................................................................................23
4.3.1. Minimum Functionality Mode ............................................................................................................ 23
4.3.2. Sleep Mode (AT+CSCLK=1) ............................................................................................................. 24
4.3.3. Wake Up SIM2000S from Sleep Mode (AT+CSCLK=1) .................................................................. 24
4.4. Serial Port and Debug Interface..........................................................................................24
4.4.1 Function of Serial Port ........................................................................................................................ 25
4.4.2 Serial Interfaces................................................................................................................................... 25
4.4.3 USB Interface...................................................................................................................................... 27
4.4.4 Software Upgrade and Debug ............................................................................................................. 28
4.4.5 Multiplexing function of serial port and SD interface......................................................................... 28
4.5. RI behaviors ........................................................................................................................28
4.6. Audio Interfaces..................................................................................................................30
4.6.1. Speaker Interfaces Configuration........................................................................................................ 30
4.6.2. Microphone Interfaces Configuration ................................................................................................. 31
4.6.3. Audio Electronic Characteristic .......................................................................................................... 31
4.7. RUIM Card Interface ..........................................................................................................31
4.7.1. RUIM Card Application...................................................................................................................... 31
4.7.2. RUIM Card Design Guide .................................................................................................................. 32
4.7.3. Design Considerations for RUIM Card Holder................................................................................... 33
4.8. PCM Interface.....................................................................................................................34