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Wavecom Wireless CPU Q24NG Manuals
Manuals and User Guides for Wavecom Wireless CPU Q24NG. We have
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Wavecom Wireless CPU Q24NG manual available for free PDF download: Customer Design Manuallines
Wavecom Wireless CPU Q24NG Customer Design Manuallines (60 pages)
Brand:
Wavecom
| Category:
Control Unit
| Size: 1.46 MB
Table of Contents
Document Information
3
Overview
4
Table of Contents
5
Contents
5
Table of Figures
8
Cautions
10
Trademarks
10
Copyright
10
1 References
11
References Documents
11
WAVECOM Reference Document
11
General Reference Document
11
List of Abbreviations
12
2 General Description
15
Overall Dimensions
15
Power Consumption
15
Capability
15
External RF Connections
15
SIM Interface Connections
16
Rohs Compliance
16
3 Baseband Design
17
Power Supply and Ground Design Rules
17
Electrical Constraints
17
Figure 1: Typical Power Supply Voltage in GSM Mode
17
Design Requirements
19
Figure 2: Maximal Voltage Ripple (Uripp) Vs Frequency in GSM & DCS, to be Confirmed
19
General Design Rules
19
Risk
19
Battery Integration
20
External DC Power Supply
20
Figure 3: Burst Simulation Circuit
20
PCB Routing Constraints
21
Application Ground Plane and Shielding Connection
21
Decoupling of Power Supply Signals
21
Power Supply Routing Constraints
21
Digital I/O and Peripheral Implementation
22
Electrical Information for Digital I/O
22
LCD Interface
22
SPI Bus
22
I 2 C
23
SPI Auxiliary Bus
23
Keyboard Interface
23
Figure 4: Example of SPI Bus Typical Implementation
23
Main Serial Link (UART1)
24
Figure 5: Example of Keyboard Implementation
24
Figure 6: Example of RS232 Level Shifter Implementation
25
Figure 7: Example of Serial Link Interface Implementation
26
SIM Interface
27
Figure 8: Example of 3V SIM Socket Implementation
27
SIM 3V Management
27
Figure 9: 1.8 V / 3 V SIM Interface Implementation Example
29
SIM 1.8 V / 3 V Management
29
Figure 10: 3 V / 5 V SIM Interface Implementation Example
30
SIM 3 V / 5 V Management
30
Analog I/O Implementation
31
Analog to Digital Converter (ADC) Inputs
31
Figure 11: Example of ADC Input Implementation
31
Audio Interface
32
Figure 12: Microphone Decoupling Capacitor
32
General
32
Microphone Inputs
32
Recommended Characteristics for the Microphones
32
Auxiliary Microphone Inputs (MIC1)
33
Figure 13: Example of Main Microphone MIC2 Implementation (Differential Connection)
33
Main Microphone Inputs (MIC2)
33
Figure 14: MIC1 Inputs (Differential Connection)
34
Figure 15: MIC1 Inputs (Single-Ended Connection)
35
Common Speaker Output Characteristics
36
Figure 16: Speaker Outputs (Differential Mode)
36
Figure 17: Speaker Outputs (Single-Ended Connection)
36
Speaker Outputs
36
Buzzer Output
37
Figure 18: Example of Buzzer Implementation
37
Routing Constraints
37
Battery Charging Interface
38
General Information
38
Interface Description
38
Figure 19: Example of Battery Implementation
38
On / ~Off
39
BOOT Signal (Optional)
40
Figure 20: BOOT Pin Connection
40
Reset Signal (~RST)
41
External Interrupt (~INTR)
41
Figure 21: ~RST Pin Connection
41
VCC Output
42
VCC_RTC (Real Time Clock Supply)
42
General
42
Typical Implementation
43
Capacitor
43
Figure 22: RTC Supplied by a Capacitor
43
Figure 23: RTC Supplied by a Super Capacitor
43
Super Capacitor
43
Battery Cell with Regulator
44
Figure 24: RTC Supplied by a Battery Cell with Regulator
44
Figure 25: RTC Supplied by a Non Rechargeable Battery
44
Non Rechargeable Battery
44
4 Radio Design
45
Antenna Characteristics
45
Antenna Implementation
45
Recommendations
45
RF Connection
46
Figure 26: Antenna Connection
46
Figure 27: Antenna Cable Preparation (Drawing Not to Scale)
47
5 Mechanical Specifications
48
Figure 28: Maximum Bulk Occupied on the Application Board
48
6 PCB Design
49
General Design Rules
49
Design Rules for Application Manufacturing
49
Recommendation for Lead Free Soldering
49
Power Supply
49
Pads Design
50
Figure 29: Pads Design
50
7 EMC Recommendations
51
8 Firmware Upgrade
52
Recommendations
52
Nominal Upgrade Procedure
52
Backup Procedure
53
9 Embedded Testability
54
Figure 30: Example of Serial Link Routing for Downloading
54
Figure 31: Download Cable Schematics (1/2)
55
Figure 32: Download Cable Schematics (2/2)
56
10 Part References and Suppliers
57
General Purpose Connector
57
SIM Card Reader
57
Microphone
57
Speaker
58
Antenna Connections
58
Antenna Pad
58
IMP Connector (RF Board to Board)
58
UFL Connector
58
MMS Connector
59
GSM Antenna
59
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