Quectel UC20 User Manual page 6

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UMTS/HSPA Module Series
UC20 EVB User Guide
Figure Index
FIGURE 1: SYSTEM OVERVIEW ....................................................................................................................... 9
FIGURE 2: EVB TOP VIEW ............................................................................................................................... 11
FIGURE 3: EVB ACCESSORIES ...................................................................................................................... 12
FIGURE 4: SIMPLIFIED POWER SUPPLY SCHEMATIC ................................................................................ 13
FIGURE 5: POWER INTERFACE ..................................................................................................................... 14
FIGURE 6: POWER PLUG ................................................................................................................................ 14
FIGURE 7: CIRCUIT OF USB INTERFACE ...................................................................................................... 15
FIGURE 8: AUDIO CODEC CIRCUIT ............................................................................................................... 16
FIGURE 9: LOUD SPEAKER CIRCUIT ............................................................................................................ 16
FIGURE 10: EARPHONE CIRCUIT .................................................................................................................. 17
FIGURE 11: PIN ASSIGNMENT OF J404 ......................................................................................................... 17
FIGURE 12: THE SKETCH OF AUDIO PLUG .................................................................................................. 18
FIGURE 13: HANDSET CIRCUIT ..................................................................................................................... 18
FIGURE 14: SIMPLIFIED SIM CARD INTERFACE SCHEMATIC .................................................................... 19
FIGURE 15: PINS ASSIGNMENT OF SIM CARD HOLDER ............................................................................ 20
FIGURE 16: UART BLOCK DIAGRAM ............................................................................................................. 21
FIGURE 17: MAIN UART PORT (J301) ............................................................................................................ 21
FIGURE 18: SWITCH AND BUTTONS ............................................................................................................. 22
FIGURE 19: STATUS LEDS .............................................................................................................................. 23
FIGURE 20: TEST POINTS ............................................................................................................................... 24
FIGURE 21: SELECT THE USB DM PORT TO UPDATE FIRMWARE ............................................................ 28
FIGURE 22: UC20 EVB AND ACCESSORIES EQUIPMENT ........................................................................... 29
UC20_EVB_User_Guide Confidential / Released 5 / 30