Sim2 M80 User's Guide download pdf (Page 15)

M80 EVB User Guide

M80_EVB_UGD_V1.2 - 14 -

Figure 8: Charging part

3.3. Audio

Five patterns of audio have been designed in M80 EVB for the customer choice. There are

AIN1/AOUT1, AIN2/AOUT2, earphone, loudspeaker and PCM interface. In this chapter, we will

introduce these audios in details.

3.3.1. Handset

AIN1/AOUT1, AIN2/AOUT2 could be designed in the handset. The block diagram of

AIN1/AOUT1 and AIN2/AOUT2 is shown as below and some details are concealed. For more

information, please refer to document [3].

Battery contact pins

Quectel

Confidential

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Sim2 M80 User's Guide Page 15