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LEON-G100/G200 - System Integration Manual
GSM.G1-HW-09002-C Preliminary System description
Page 37 of 75
LEON-G100/G200
37
43
44
MIC_BIAS1
MIC_GND1
HS_P
Audio Device
Single-ended Analog Output
Reference
Single-ended Analog Input
10 µF
GND
Reference
10 µF
LEON-G100/G200
37
43
44
MIC_BIAS1
MIC_GND1
HS_P
Audio Device
Positive Analog Input
10 µF
GND
Reference
Negative Analog Input
Single-ended
to
Differential
Positive Analog Output
10 µF
Reference
Negative Analog Output
Differential
to
Single-ended
LEON-G100/G200
37
43
44
MIC_BIAS1
MIC_GND1
HS_P
Audio Device
Single-ended Analog Output
Reference
Single-ended Analog Input
10 µF
GND
Reference
10 µF
LEON-G100/G200
37
43
44
MIC_BIAS1
MIC_GND1
HS_P
Audio Device
Positive Analog Input
10 µF
GND
Reference
Negative Analog Input
Single-ended
to
Differential
Positive Analog Output
10 µF
Reference
Negative Analog Output
Differential
to
Single-ended
Figure 23: Application circuits to connect the LEON module to external audio devices with appropriate single-ended or
differential analog audio inputs/outputs
1.9.2 Digital Audio interface (LEON-G200 only)
LEON-G200 supports a bidirectional 4-wire I2S digital audio interface. The module acts as master only. The I2S
pins are listed in Table 6:
Name
Description
Remarks
I2S_WA
I2S word alignment
Module output (master)
I2S_TXD
I2S transmit data
Module output
I2S_CLK
I2S clock
Module output (master)
I2S_RXD
I2S receive data
Module input
Table 6: I2S interface pins
The I2S interface can be can be used in two modes:
PCM mode: I2Sx
Normal I2S mode: I2Sy
Beyond the supported transmission modality, the main difference between the PCM mode and the normal I2S
mode is represented by the logical connection to the digital audio processing system integrated in the chipset
firmware (see Figure 24):
In PCM mode provides complete audio processing functionality
Normal I2S mode: digital filters, digital gains, side tone, some audio resources as tone generator, info tones
(e.g. free tone, connection tone, low battery alarm), and ringer are not available
The I2S interface is activated and configured using AT commands, see the u-blox AT commands manual [2].
- LEON-G100/G200 1
- Page 2 2
- Preface 3
- Page 4 of 75 4
- Contents 5
- Page 6 of 75 6
- Page 7 of 75 7
- 1 System description 8
- 1.2 Architecture 9
- 1.2.1 Functional blocks 10
- Page 11 of 75 11
- 1.3 Pin-out 12
- 1.4 Operating Modes 14
- 1.5.2 Voltage supply (VCC) 17
- 500 mAh … 1100 mAh 22
- Page 23 of 75 23
- Page 25 of 75 25
- 1.6 System functions 26
- Page 27 of 75 27
- 1.6.2 Module power off 28
- 1.6.3 Module reset 29
- 1.7 RF connection 31
- 1.8 Antenna supervisor 31
- 1.9 Audio 31
- Page 32 of 75 32
- Page 34 of 75 34
- Page 38 of 75 38
- Page 40 of 75 40
- 1.10 SIM interface 41
- 1.11 Serial Communication 42
- Page 43 of 75 43
- Page 44 of 75 44
- Page 45 of 75 45
- Page 46 of 75 46
- 1.11.2 DDC (I 47
- C) interface 47
- Page 48 of 75 48
- Page 49 of 75 49
- 1.14 Approvals 50
- 2 Design-In 51
- Pinout_Layout_R1.1(ppt) 52
- Page 54 of 75 54
- Page 55 of 75 55
- Page 56 of 75 56
- Page 57 of 75 57
- Page 58 of 75 58
- 2.4 Antenna guidelines 60
- 2.4.1 Antenna termination 61
- 2.4.2 Antenna radiation 62
- LEON-G100 64
- LEON-G200 64
- 3 Handling and soldering 65
- 3.2.3 Optical inspection 66
- 3.2.4 Cleaning 66
- Page 67 of 75 67
- 4 Product Testing 68
- Appendix 69
- A Extra Features 69
- A.5 HTTP 70
- A.6 SMTP 70
- A.7 FOTA (LEON-G200 only) 70
- A.8 GPS 70
- B Glossary 71
- Page 72 of 75 72
- Related documents 73
- Revision history 74
- Contact 75
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