Table Of Contents; Contents - Quectel FC908A Hardware Design

Contents

Safety Information ...................................................................................................................................... 3
About the Document .................................................................................................................................. 4
Contents ...................................................................................................................................................... 5
Table Index .................................................................................................................................................. 7
Figure Index ................................................................................................................................................ 8
1 Introduction ......................................................................................................................................... 9
1.1. Special Mark ............................................................................................................................ 12
2 Product Overview ............................................................................................................................. 13
2.1. General Description ................................................................................................................. 13
2.2. Key Features ............................................................................................................................ 13
2.3. Functional Diagram .................................................................................................................. 15
2.4. EVB .......................................................................................................................................... 15
3 Application Interfaces ...................................................................................................................... 16
3.1. General Description ................................................................................................................. 16
3.2. Pin Assignment ........................................................................................................................ 17
3.3. Pin Description ......................................................................................................................... 18
3.4. Power Supply ........................................................................................................................... 20
3.4.1. Power Supply Pins Introduction.................................................................................... 20
3.4.2. Buck Circuit Pins Introduction ....................................................................................... 22
3.5. WLAN Application Interface ..................................................................................................... 23
3.5.1. SDIO Interface .............................................................................................................. 23
3.5.2. WLAN_EN ..................................................................................................................... 25
3.5.3. WLAN_WAKE ............................................................................................................... 25
3.5.4. Introduction of WLAN Pin Multiplexing Function .......................................................... 26
3.6. Bluetooth Application Interface ................................................................................................ 27
3.6.1. UART Interface ............................................................................................................. 27
3.6.2. BT_EN .......................................................................................................................... 28
3.6.3. BT_WAKE_HOST and HOST_WAKE_BT ................................................................... 29
3.6.4. PCM Interface ............................................................................................................... 29
3.7. Other Interfaces ....................................................................................................................... 30
3.7.1. WLAN_SLP_CLK .......................................................................................................... 30
3.7.2. XTAL_IN/OUT ............................................................................................................... 31
3.7.3. GPIOs ........................................................................................................................... 31
3.8. RF Antenna Interfaces ............................................................................................................. 31
3.8.1. Operating Frequency .................................................................................................... 32
3.8.2. Pin Definition of RF Antenna Interface ......................................................................... 32
3.8.3. Reference Design ......................................................................................................... 32
3.8.4. Reference Design of RF Routing.................................................................................. 33
3.8.5. Requirements for Antenna Design ............................................................................... 35
3.8.6. RF Connector Recommendation .................................................................................. 36
FC908A_Hardware_Design
Wi-Fi&Bluetooth Module Series
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