User's Manual

UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 3 / 67
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 7
1.1. Safety Information...................................................................................................................... 8
2 Product Concept .................................................................................................................................. 9
2.1. General Description ................................................................................................................... 9
2.2. Directives and Standards ........................................................................................................... 9
2.2.1. FCC Statement ............................................................................................................... 10
2.2.2. FCC Radiation Exposure Statement .............................................................................. 10
2.3. Key Features ........................................................................................................................... 10
2.4. Functional Diagram ................................................................................................................. 12
2.5. Evaluation Board ..................................................................................................................... 13
3 Application Interface ......................................................................................................................... 14
3.1. General Description ................................................................................................................. 14
3.2. Pin Assignment ........................................................................................................................ 15
3.3. Pin Description ......................................................................................................................... 16
3.4. Operating Modes ..................................................................................................................... 21
3.5. Power Saving ........................................................................................................................... 21
3.5.1. Sleep Mode .................................................................................................................... 21
3.5.1.1. UART Application ................................................................................................. 21
3.5.1.2. USB Application with Suspend Function ............................................................. 22
3.5.1.3. USB Application without Suspend Function ........................................................ 22
3.5.2. Minimum Functionality Mode ......................................................................................... 23
3.6. Power Supply ........................................................................................................................... 24
3.6.1. Power Supply Pins ......................................................................................................... 24
3.6.2. Decrease Voltage Drop .................................................................................................. 24
3.6.3. Reference Design for Power Supply .............................................................................. 25
3.6.4. Monitor the Power Supply .............................................................................................. 26
3.7. Turn on and off Scenarios ....................................................................................................... 26
3.7.1. Turn on Module .............................................................................................................. 26
3.7.2. Turn off Module .............................................................................................................. 28
3.7.2.1. Turn off Module Using the PWRDWN_N Pin ...................................................... 28
3.7.2.2. Turn off Module Using AT Command ................................................................... 30
3.7.2.3. Automatic Shutdown ............................................................................................ 30
3.8. Reset the Module..................................................................................................................... 31
3.9. RTC Interface .......................................................................................................................... 33
3.10. UART Interface ........................................................................................................................ 34
3.11. USIM Card Interface ................................................................................................................ 37