M20 EVB User Guide
Contents
0. Revision history ............................................................................................................................5
1. Introduction...................................................................................................................................6
1.1. Related documents ..............................................................................................................6
1.2. Safety caution......................................................................................................................6
2. EVB kit introduction.....................................................................................................................8
2.1. EVB top and bottom view...................................................................................................8
2.2. EVB accessory ..................................................................................................................10
3. Interface application.................................................................................................................... 11
3.1. Power interface.................................................................................................................. 11
3.2. Audio interface..................................................................................................................12
3.3. SIM card interface.............................................................................................................13
3.4. Antenna interface ..............................................................................................................14
3.5. Serial ports ........................................................................................................................15
3.6. Switches and buttons.........................................................................................................16
3.7. Operating status LED ........................................................................................................17
3.8. Test points .........................................................................................................................18
3.8.1 J1 test points............................................................................................................19
3.8.2 J2 test points............................................................................................................20
3.8.3 J3 test points............................................................................................................21
3.8.4 VDD_EXT and VBAT test points ...........................................................................22
4. EVB and accessories...................................................................................................................23
5. Illustration ...................................................................................................................................24
5.1. Power on operations ..........................................................................................................24
5.2. Communicate with the module..........................................................................................24
5.3. Firmware upgrade .............................................................................................................24
5.4. Turn off..............................................................................................................................25
5.5. Emergency off ...................................................................................................................25
6. 50 PIN assignment of B2B connector.........................................................................................26
M20_EVB_UGD_V1.01 - 2 -
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