Quectel LTE Standard Module Series, Hardware Design

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LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 6 / 54
Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 13
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 14
FIGURE 3: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 20
FIGURE 4: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR 21
FIGURE 5: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR ... 21
FIGURE 6: REFERENCE CIRCUIT OF USB INTERFACE .............................................................................. 22
FIGURE 7: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 24
FIGURE 8: TIMING IN PRIMARY MODE .......................................................................................................... 25
FIGURE 9: TIMING IN AUXILIARY MODE........................................................................................................ 26
FIGURE 10: REFERENCE CIRCUIT OF PCM AND I2C APPLICATION WITH AUDIO CODEC ..................... 26
FIGURE 11: RI BEHAVIORS ............................................................................................................................. 27
FIGURE 12: TIMING OF RESETTING MODULE ............................................................................................. 29
FIGURE 13: LED_WWAN# SIGNAL REFERENCE CIRCUIT DIAGRAM ........................................................ 29
FIGURE 14: WAKE# BEHAVIORS .................................................................................................................... 30
FIGURE 15: DIMENSIONS OF THE RECEPTACLE RF CONNECTORS (UNIT: MM) .................................... 36
FIGURE 16: MECHANICALS OF U.FL-LP MATING PLUGS ........................................................................... 36
FIGURE 17: SPACE FACTOR OF MATING PLUGS (UNIT: MM) ..................................................................... 37
FIGURE 18: REFERENCED HEATSINK DESIGN ........................................................................................... 47
FIGURE 19: MECHANICAL DIMENSIONS OF EG21-G MINI PCIE ................................................................ 49
FIGURE 20: STANDARD DIMENSIONS OF MINI PCI EXPRESS ................................................................... 50
FIGURE 21: DIMENSIONS OF THE MINI PCI EXPRESS CONNECTOR (MOLEX 679105700) .................... 51