Quectel HSPA+ Series, Проектирование аппаратного обеспечения

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UMTS/HSPA+ Module Series
UC200A-GL_Hardware_Design 9 / 78
Figure Index
Figure 2: Pin Assignment (Top View) ....................................................................................................... 15
Figure 3: Sleep Mode Application via UART ............................................................................................ 23
Figure 4: Sleep Mode Application with USB Remote Wakeup ................................................................. 24
Figure 5: Sleep Mode Application with MAIN_RI ..................................................................................... 25
Figure 6: Sleep Mode Application without Suspend Function .................................................................. 25
Figure 7: Reference Design of Power Supply ......................................................................................... 27
Figure 8: Power Supply Limits during Burst Transmission ...................................................................... 28
Figure 9: Star Structure of the Power Supply .......................................................................................... 29
Figure 10: Turning on the Module Using Driving Circuit .......................................................................... 29
Figure 11: Turning on the Module with a Button ...................................................................................... 30
Figure 12: Power-up Timing .................................................................................................................... 30
Figure 13: Timing of Turning off Module .................................................................................................. 31
Figure 14: Reference Circuit of RESET_N with Driving Circuit ............................................................... 32
Figure 15: Reference Circuit of RESET_N with Button ........................................................................... 33
Figure 16: Timing of Resetting Module .................................................................................................... 33
Figure 17: Reference Circuit of USB Application ..................................................................................... 35
Figure 18: Reference Circuit of USB_BOOT Interface ............................................................................ 36
Figure 19: Timing Sequence for Entering Emergency Download Mode .................................................. 37
Figure 20: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector ......................... 38
Figure 21: Reference Circuit of (U)SIM Interface with a 6-pin (U)SIM Card Connector ........................... 39
Figure 22
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Timing Sequence for Short frame mode ............................................................................... 40
Figure 23: PCM and I2C Interface Circuit Reference Design ............................................................. 41
Figure 24: Reference Circuit with Translator Chip ................................................................................... 43
Figure 25: Reference Circuit with Transistor Circuit .......................................................................... 43
Figure 26: Reference Circuit of SD Card Interface .................................................................................. 44
Figure 27: Reference Circuit of the Network Status Indication ................................................................ 47
Figure 28: Reference Circuits of STATUS ............................................................................................... 48
Figure 29: Reference Circuit for RF Antenna Interfaces .......................................................................... 52
Figure 30: Microstrip Design on a 2-layer PCB ....................................................................................... 52
Figure 31: Coplanar Waveguide Design on a 2-layer PCB ...................................................................... 53
Figure 32: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) ................... 53
Figure 33: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) ................... 53
Figure 34: Dimensions of U.FL-R-SMT Connector (Unit: mm) .......................................................... 55
Figure 35: Mechanicals of U.FL-LP Connectors ................................................................................. 55
Figure 36: Space Factor of Mated Connector (Unit: mm) ........................................................................ 56
Figure 37: Module Top and Side Dimensions (Unit: mm) ........................................................................ 63
Figure 38: Module Bottom Dimensions View (Unit: mm) ......................................................................... 64
Figure 39: Recommended Footprint (Bottom View) ................................................................................ 65
Figure 40: Top and Bottom View of the Module ....................................................................................... 66
Figure 41: Recommended Reflow Soldering Thermal Profile .................................................................. 68
Figure 42: Carrier Tape Dimension Drawing ....................................................................................... 70