Quectel AF55C Hardware Design page 9

Automotive Wi-Fi&Bluetooth Module Series
Figure Index
Figure 1: Functional Diagram ..................................................................................................................... 12
Figure 2: Pin Assignment (Top View) ......................................................................................................... 14
Figure 3: Power-up Timing ......................................................................................................................... 19
Figure 4: Wi-Fi Application Interface Connection ....................................................................................... 20
Figure 5: PCIe Interface Connection .......................................................................................................... 21
Figure 6: Bluetooth Interface Connection .................................................................................................. 24
Figure 7: PCM Interface Connection .......................................................................................................... 25
Figure 8: Bluetooth UART Interface Connection ....................................................................................... 25
Figure 9: Coexistence UART Interface Connection ................................................................................... 27
Figure 10: RF Antenna Reference Design ................................................................................................. 28
Figure 11: Microstrip Design on a 2-layer PCB .......................................................................................... 29
Figure 12: Coplanar Waveguide Design on a 2-layer PCB ....................................................................... 29
Figure 13: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) .................... 29
Figure 14: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) .................... 30
Figure 15: Dimensions of the Receptacle (Unit: mm) ................................................................................ 31
Figure 16: Specifications of Mated Plugs ................................................................................................... 32
Figure 17: Space Factor of Mated Connectors (Unit: mm) ........................................................................ 32
Figure 18: Placement and Fixing of the Heatsink ...................................................................................... 43
Figure 19: Top and Side Dimensions ......................................................................................................... 44
Figure 20: Bottom Dimension (Perspective View) ..................................................................................... 45
Figure 21: Recommended Footprint .......................................................................................................... 46
Figure 22: Top and Bottom Views .............................................................................................................. 47
Figure 23: Recommended Reflow Soldering Thermal Profile ................................................................... 49
Figure 24: Carrier Tape Dimension Drawing .............................................................................................. 51
Figure 25: Plastic Reel Dimension Drawing .............................................................................................. 52
Figure 26: Mounting Direction .................................................................................................................... 52
Figure 27: Packaging Process ................................................................................................................... 53
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