User's Manual

UMTS/HSDPA Module Series
UC15 Hardware Design
UC15_Hardware_Design Confidential / Released 3 / 78
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 6
Figure Index ................................................................................................................................................. 7
1 Introduction .......................................................................................................................................... 9
1.1. Safety Information...................................................................................................................... 9
2 Product Concept ................................................................................................................................ 11
2.1. General Description ................................................................................................................. 11
2.2. Directives and Standards ......................................................................................................... 12
2.2.1. FCC Statement ............................................................................................................... 12
2.2.2. FCC Radiation Exposure Statement .............................................................................. 12
2.3. Key Features ........................................................................................................................... 12
2.4. Functional Diagram ................................................................................................................. 15
2.5. Evaluation Board ..................................................................................................................... 15
3 Application Interface ......................................................................................................................... 17
3.1. General Description ................................................................................................................. 17
3.2. Pin Assignment ........................................................................................................................ 18
3.3. Pin Description ......................................................................................................................... 19
3.4. Operating Modes ..................................................................................................................... 24
3.5. Power Saving ........................................................................................................................... 25
3.5.1. Sleep Mode .................................................................................................................... 25
3.5.1.1. UART Application ................................................................................................. 25
3.5.1.2. USB Application with Suspend Function ............................................................. 26
3.5.1.3. USB Application without Suspend Function ........................................................ 27
3.5.2. Minimum Functionality Mode ......................................................................................... 27
3.6. Power Supply ........................................................................................................................... 28
3.6.1. Power Supply Pins ......................................................................................................... 28
3.6.2. Decrease Voltage Drop .................................................................................................. 28
3.6.3. Reference Design for Power Supply .............................................................................. 29
3.6.4. Monitor the Power Supply .............................................................................................. 30
3.6.5. VDD_EXT ....................................................................................................................... 30
3.7. Turn on and off Scenarios ....................................................................................................... 30
3.7.1. Turn on Module by PWRKEY Pin .................................................................................. 30
3.7.2. Turn off Module .............................................................................................................. 32
3.7.2.1. Turn off Module by PWRKEY Pin ........................................................................ 32
3.7.2.2. Turn off Module by AT Command ........................................................................ 33
3.7.2.3. Automatic Shutdown ............................................................................................ 33
3.8. Reset the Module..................................................................................................................... 34