Product Info

LTE Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design Confidential / Released 6 / 46
Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 17
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 21
FIGURE 3: REFERENCE DESIGN OF POWER SUPPLY ............................................................................... 22
FIGURE 4: REFERENCE CIRCUIT OF USIM CARD INTERFACE WITH A 6-PIN USIM CARD CONNECTOR
........................................................................................................................................................................... 23

FIGURE 5: REFERENCE CIRCUIT OF USB INTERFACE .............................................................................. 24
FIGURE 6: TIMING IN PRIMARY MODE .......................................................................................................... 27
FIGURE 7: TIMING IN AUXILIARY MODE ....................................................................................................... 27
FIGURE 8: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC ...................................... 28
FIGURE 9: RI BEHAVIOR ................................................................................................................................. 29
FIGURE 10: TIMING OF RESETTING MODULE ............................................................................................. 30
FIGURE 11: LED_WWAN# SIGNAL REFERENCE CIRCUIT DIAGRAM ......................................................... 30
FIGURE 12: WAKE# BEHAVIOR ...................................................................................................................... 31
FIGURE 13: DIMENSIONS OF THE RF CONNECTOR (UNIT: MM) ............................................................... 32
FIGURE 14: MECHANICALS OF U.FL-LP CONNECTORS ............................................................................. 32
FIGURE 15: MECHANICAL DIMENSIONS OF EC25 MINI PCIE (UNIT: MM) ................................................. 42
FIGURE 16: STANDARD DIMENSIONS OF MINI PCI EXPRESS (UNIT: MM) ............................................... 43
FIGURE 17: DIMENSIONS OF THE MINI PCI EXPRESS CONNECTOR (MOLEX 679100002, UNIT: MM) .. 44