Motorola AT Commands G24-LC Informations techniques Page 62
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Audio Interface
38 G30 - Module Hardware Description December 15, 2009
Table 2-14 describes the available audio paths in Basic mode.
Advanced Mode
Advanced audio mode utilizes G30's unique set of AT commands for advanced audio
programming. The expanded AT command set enables to define a specific audio path and setting,
which are not part of the default configuration, for each type of audio sound (speech, DTMF
tones, rings and alerts).
Unlike basic audio mode, which provides predefined audio paths, the advanced audio mode
provides full control over the G30 audio interface and its parameters, and differentiates between
each type of audio sound.
Table 2-15 describes the advanced mode audio programming features. These features are only a
part of the complete advanced audio AT command set.
Table 2-14:
Basic Mode Audio Paths
Audio Path Input Signal Output Signal Description
Handset MIC SPKR_N, SPKR_P Default audio path for speech and
DTMF tones and ring.
Headset HDST_INT HDST_SPK Alternate path for headset device.
Enable by setting HDST_INT inter-
face signal low.
Digital PCM_DIN PCM_DOUT Enable digital path by
AT+MADIGITAL=1
Table 2-15: Advanced Mode Commands
Command Description
AT+MAPATH Sets the input device for voice, and the output
devices for voice, DTMF tones, rings and
alerts.
AT+MAFEAT Enables and disables the speech processing
algorithms - Echo suppression, noise sup-
pression and sidetone.
AT+MAVOL Sets the gain (amplification) level of the
selected analog output device.
AT+MMICG Sets the gain (amplification) level of the
selected analog input device.
AT+MMICV Sets the MIC bias voltage.
AT+MADIGITAL Switches between analog and digital audio
paths.
- Technical Information 1
- Copyrights 2
- Computer Software Copyrights 2
- Trademarks 3
- Table of Contents 5
- Table of Contents 6
- List of Figures 9
- List of Tables 10
- Manual Scope 11
- Target Audience 11
- Manual Organization 11
- Applicable Documents 11
- Regulatory Requirements 12
- Regulatory Statement (Safety) 12
- FCC Notice to Users 12
- Precautions 13
- Standards 14
- Contact Us 15
- Text Conventions 15
- Important 16
- Caution 16
- General Safety 17
- Caring for the Environment 18
- Limitation of Liability 19
- Warranty Notification 19
- How to Get Warranty Service? 20
- Claiming 20
- Conditions 21
- Installed Data 22
- Out of Warranty Repairs 22
- Revision History 23
- Chapter 1: Introduction 25
- Product Specifications 26
- Regulatory and Approvals 30
- Architecture Overview 33
- Baseband 34
- RF Block 34
- Operating Modes 35
- Power Supply 36
- Note: 1 TX slot is shown 37
- Power Consumption 38
- Power On/Off Operation 39
- Turning the G30 Off 40
- Power Loss shut down 41
- Low Power Mode 42
- Terminating Low Power Mode 43
- Using the WKUPI signal 44
- Incoming Network Data 44
- Data on the Serial interface 45
- Real Time Clock 46
- Serial Interfaces 47
- Flashing and Data Logging 49
- C Bus Interface 50
- SIM Interface 51
- External SIM Card 52
- Embedded SIM 53
- Audio Interface 54
- Headset Microphone Port 55
- Ω at the 57
- Mono Speaker (Headset) Port 58
- Headset Detection 59
- Digital Audio Interface 60
- Advanced Mode 62
- Audio Programming Interface 63
- Audio Design 64
- Analog Ground 65
- A/D Interface 66
- General Purpose A/D 67
- VREF Reference Regulator 69
- Wakeup Out 70
- Antenna Detection 71
- GPRS Detection 72
- General Purpose I/O 72
- Antenna Interface 73
- Absolute Maximum Ratings 75
- Operating Parameters 76
- Voltage Domain Parameter 77
- Limit Values 77
- Unit Remarks 77
- Min Typ Max 77
- Audio Pins 80
- Parameter 82
- ADC Pins 83
- Environmental Specifications 85
- Board Dimensions 95
- U.FL Connector Specifications 100
- Mating Connector 101
- G30 Mounting 102
- Layout Recommendation 103
- Soldering Re-flow 104
- Ordering Information 105
- Required Query Information 106
- Who to Contact? 106
- Testing a Standalone Unit 108
- Test Procedure 109
- Acronyms and Abbreviations 111
- Index U - U 116
- @6802986C55@ 118
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