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H330S Hardware User Manual Page
5.3.3 WAKE_UP Signal............................................................................................................................ 31
5.3.4 Other Work Indications................................................................................................................... 31
5.4 USB Interface.............................................................................................................................................32
5.4.1 USB Interface Definition................................................................................................................. 32
5.4.2 USB Interface Application.............................................................................................................. 32
5.5 UART Interface..........................................................................................................................................33
5.5.1 UART Interface Description........................................................................................................... 33
5.5.2 UART Interface Application............................................................................................................34
5.5.3 Ring Indication................................................................................................................................. 35
5.6 USIM Interface...........................................................................................................................................35
5.6.1 USIM Pins......................................................................................................................................... 35
5.6.2 USIM Design.................................................................................................................................... 35
5.6.3 Points for Attention in USIM Design.............................................................................................36
5.6.4 USIM Hot-Plugging..........................................................................................................................36
5.6.4.1 Hardware Connection............................................................................................................ 37
5.6.4.2 Software Settings................................................................................................................... 37
5.7 Analog Audio Interface............................................................................................................................ 37
5.7.1 Definition of Audio Interface Signals............................................................................................ 37
5.7.2 Description of Audio Interface Application.................................................................................. 38
5.7.2.1 Audio Channel 1..................................................................................................................... 38
5.7.2.2 Audio Channel 2..................................................................................................................... 38
5.8 Digital Audio............................................................................................................................................... 39
5.8.1 I2S...................................................................................................................................................... 39
5.8.2 I2C......................................................................................................................................................40
5.8.3 PCM Port Description..................................................................................................................... 40
5.9 ADC Interface.............................................................................................................................................40
5.10 Other Interfaces...................................................................................................................................... 41
6 Electrical and Environmental Features...................................................................................41
6.1 Electrical Features.................................................................................................................................... 41
6.2 Environmental Features.......................................................................................................................... 41
7 RF Interface.......................................................................................................................................42
7.1 Operating Frequency Band.................................................................................................................... 42
7.1.1 Frequency Range of Main Antenna..............................................................................................42