Quectel BC66, Проектирование аппаратного обеспечения

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NB-IoT Module Series
BC66 Hardware Design
BC66_Hardware_Design 3 / 57
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. Key Features ............................................................................................................................. 10
2.3. Functional Diagram ................................................................................................................... 11
2.4. Development Board .................................................................................................................. 12
3 Application Interfaces ....................................................................................................................... 13
3.1. General Description .................................................................................................................. 13
3.2. Pin Assignment ......................................................................................................................... 14
3.3. Pin Description .......................................................................................................................... 15
3.4. Operating Modes ....................................................................................................................... 18
3.5. Power Saving Mode (PSM) ....................................................................................................... 19
3.6. Power Supply ............................................................................................................................ 20
3.6.1. Power Supply Pins ......................................................................................................... 20
3.6.2. Reference Design for Power Supply .............................................................................. 21
3.7. Power up/Power down Scenarios ............................................................................................. 21
3.7.1. Turn on ........................................................................................................................... 21
3.7.2. Turn off ........................................................................................................................... 23
3.7.3. Reset the Module ........................................................................................................... 24
3.8. UART Interfaces ........................................................................................................................ 25
3.8.1. Main UART Port ............................................................................................................. 26
3.8.2. Debug UART Port .......................................................................................................... 26
3.8.3. Auxiliary UART Port ....................................................................................................... 27
3.8.4. UART Application ........................................................................................................... 27
3.9. SPI Interface ............................................................................................................................. 29
3.10. USIM Interface .......................................................................................................................... 30
3.11. ADC Interface ............................................................................................................................ 32
3.12. RI Behaviors* ............................................................................................................................ 32
3.13. Network Status Indication* ........................................................................................................ 32
4 Antenna Interface ............................................................................................................................... 34
4.1. Pin Definition ............................................................................................................................. 34
4.2. Operating Frequencies ............................................................................................................. 34
4.3. RF Antenna Reference Design ................................................................................................. 35
4.4. Reference Design of RF Layout ............................................................................................... 36