Quectel RG255C-GL Hardware Design page 9

5G Module Series
Figure Index
Figure 1: Functional Diagram .................................................................................................................... 13
Figure 2: Pin Assignment .......................................................................................................................... 14
Figure 3: Module Power Consumption in Sleep Mode ............................................................................. 20
Figure 4: Reference Circuit of Power Supply ............................................................................................ 21
Figure 5: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector .......................... 23
Figure 6: Reference Circuit of (U)SIM Interface with a 6-pin (U)SIM Card Connector ............................ 23
Figure 7: Reference Circuit of USB Interface ........................................................................................... 25
Figure 8: Reference Circuit of Power Supply ............................................................................................ 26
Figure 9: Timing in Primary Mode ............................................................................................................. 27
Figure 10: Timing in Auxiliary Mode .......................................................................................................... 28
Figure 11: Reference Circuit of PCM and I2C Application with Audio Codec ........................................... 28
Figure 12: RI Behaviors ............................................................................................................................ 30
Figure 13: Reset Timing ............................................................................................................................ 31
Figure 14: LED_WWAN# Signal Reference Circuit Diagram ................................................................... 32
Figure 15: WAKE# Behaviors ................................................................................................................... 33
Figure 16: Dimensions of the Receptacle RF Connectors (Unit: mm) ..................................................... 39
Figure 17: Mechanicals of U.FL-LP Mating Plugs .................................................................................... 40
Figure 18: Space Factor of Mating Plugs (Unit: mm) ................................................................................ 40
Figure 19: Distribution of Heat Source Chips Inside the Module .............................................................. 46
Figure 20: Placement and Fixing of the Heatsink ..................................................................................... 47
Figure 21: Mechanical Dimensions ........................................................................................................... 49
Figure 22: Standard Dimensions of Mini PCI Express Connector (Molex 679105700) ........................... 50
Figure 23: Top and Bottom Views of the Module ...................................................................................... 51
Figure 24: Test Points of the Module......................................................................................................... 51
Figure 25: Blister Tray Dimension Drawing .............................................................................................. 53
Figure 26: Packaging Process .................................................................................................................. 53
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