Quectel AF51Y Hardware Design page 9

Wi-Fi&Bluetooth Module Series
Figure Index
Figure 1: Functional Diagram of AF51Y Module ........................................................................................ 12
Figure 2: Pin Assignment (Top View) ......................................................................................................... 14
Figure 3: Time Sequence ........................................................................................................................... 19
Figure 4: WLAN Interface Connection ....................................................................................................... 19
Figure 5: PCIe Interface Connection .......................................................................................................... 21
Figure 6: Block Diagram of Bluetooth Interface Connection ..................................................................... 22
Figure 7: PCM Interface Connection .......................................................................................................... 23
Figure 8: UART Interface Connection ........................................................................................................ 24
Figure 9: UART Coexistence Interface Connection ................................................................................... 25
Figure 10: Reference Circuit for RF Antenna Interfaces ............................................................................ 27
Figure 11: Microstrip Design on a 2-layer PCB .......................................................................................... 27
Figure 12: Coplanar Waveguide Design on a 2-layer PCB ....................................................................... 27
Figure 13: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) .................... 28
Figure 14: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) .................... 28
Figure 15: Dimensions of the U.FL-R-SMT Connector (Unit: mm) ............................................................ 30
Figure 16: Mechanicals of UF.L-LP Connectors (Unit: mm) ...................................................................... 30
Figure 17: Space Factor of Mated Connector (Unit: mm) .......................................................................... 31
Figure 18: AF51Y Top and Side Dimensions ............................................................................................. 38
Figure 19: AF51Y Bottom Dimension (Bottom View) ................................................................................. 39
Figure 20: Recommended Footprint (Bottom View) .................................................................................. 40
Figure 21: Top & Bottom Views of the Module ........................................................................................... 41
Figure 23: Recommended Reflow Soldering Thermal Profile ................................................................... 43
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