User guide

M80 EVB User Guide
M80_EVB_UGD_V1.2 - 2 -
Contents
Contents ............................................................................................................................................ 2
Table Index ........................................................................................................................................ 4
Figure Index ...................................................................................................................................... 5
0. Revision history ............................................................................................................................ 6
1. Introduction ................................................................................................................................... 7
1.0. Related documents .............................................................................................................. 7
1.1. Safety precautions ............................................................................................................... 7
2. EVB kit ......................................................................................................................................... 9
2.1. EVB top and bottom view ................................................................................................... 9
2.2. EVB Accessories ............................................................................................................... 10
3. Application .................................................................................................................................. 11
3.1. Power................................................................................................................................. 11
3.1.1. LDO ......................................................................................................................... 11
3.1.2. Test point ................................................................................................................. 12
3.2. Charging ............................................................................................................................ 13
3.3. Audio ................................................................................................................................. 14
3.3.1. Handset .................................................................................................................... 14
3.3.2. Earphone .................................................................................................................. 16
3.3.3. Loud speaker ........................................................................................................... 17
3.3.4. PCM interface .......................................................................................................... 18
3.4. SIM Card ........................................................................................................................... 20
3.5. Antenna ............................................................................................................................. 23
3.6. Communication ................................................................................................................. 24
3.6.1. Main UART ............................................................................................................. 24
3.6.2. Auxiliary UART and Debug UART ........................................................................ 26
3.7. SD card .............................................................................................................................. 28
3.8. Switches and buttons ......................................................................................................... 30
3.9. LED indicator .................................................................................................................... 30
3.10. LCD ................................................................................................................................. 31
3.11. Keyboard ......................................................................................................................... 31
3.12. ADC ................................................................................................................................ 32
4. EVB accessories assembly .......................................................................................................... 33
5. Illustration ................................................................................................................................... 34
5.1. Turn on the module ........................................................................................................... 34
5.2. Turn off the module ........................................................................................................... 34
5.3. Emergency off ................................................................................................................... 34
5.4. Communicate with the module .......................................................................................... 34
5.4.1. UART ...................................................................................................................... 34
5.4.2. Auxiliary UART ...................................................................................................... 35
5.5. Firmware upgrade ............................................................................................................. 35
5.6. Charging ............................................................................................................................ 35
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