Cavli Wireless C20QM Manuals

Manuals and User Guides for Cavli Wireless C20QM. We have 1 Cavli Wireless C20QM manual available for free PDF download: Hardware Manual

Cavli Wireless C20QM Hardware Manual

Cavli Wireless C20QM Hardware Manual (77 pages)

LTE CAT 4 /2G Module

Brand: Cavli Wireless | Category: Control Unit | Size: 4 MB

Table of Contents

Table of Contents
3
Version History
8
Introduction
10
Module Overview
11
Module Introduction
11
Module C Haracteristics
12
Module Function
14
Figure 1 C20QM Functional Block Diagram
15
Interface Application Description
16
C Hapter Overview
16
Module Interface
17
C20QM Pin Layout
17
Figure 2 C20QM Module Interface Definition (Top View)
17
C20QM Pin Interface
18
Absolute Maximum Ratings
19
Operating Conditions
19
Pin Descriptions
20
Power Interface
32
Power Supply Design
32
Power Reference Circuit
33
Figure 3 VCC Power Supply
33
VREF 1.8 Voltage Output
34
Figure 4 DC Switching Power Supply Reference Circuit
34
Switching Machine Reset Mode
35
Turn on Module
35
Reset Control
35
Figure 5 Power-On Reference Circuit
35
U SB Interface
36
Figure 6 Reset Reference Circuit
36
Figure 7 USB Connection Design Circuit Diagram with ID Pulled up
37
Figure 8 USB Connection Design Circuit Diagram with ID Pulled down
37
U ART Interface
38
UART3 Serial Port
38
UART4 Serial Port (at UART)
39
UART5 Serial Port (Debug UART)
39
Serial Port Application Circuit
40
Figure 9 UART Serial Port Design
40
Figure 10 Level Conversion Technique
40
Usim Interface
41
Usim Card Reference Circuit
41
Figure 11 USIM Design Circuit Diagram
41
G Eneral Purpose G PIO Interface
42
Network Status Indication Interface
43
PC M Digital Voice Interface
44
Figure 12 Circuit Diagram of Network Indicator
44
Figure 13 PCM Short Frame Mode Timing Diagram
45
I2C Bus
46
Figure 14 PCM to Analog Voice Map
46
SD Host Interface
47
Figure 15 I2C Interface Reference Circuit Diagram
47
SDC Interface
48
Figure 16 SDC Interface Reference Circuit Diagram
49
Antenna
50
Figure 17 Main Antenna Matching Circuit
50
Figure 18 Diversity Antenna Matching Circuit
51
Figure 19 GNSS Active Antenna Matching Circuit
52
Figure 20 GNSS Passive Antenna Matching Circuit
52
RF Trace Reference
53
Figure 21 Coplanar Antenna
53
Figure 22 the Complete Structure of the Two-Layer PCB Microstrip Line
53
C Ontrol Interface
54
Figure 23 the Complete Structure of the Multilayer PCB Strip Line
54
SG MII Interface
55
Figure 24 Ethernet (SGMII) Interface Reference Circuit Diagram
55
G NSS Interface
56
JTAG Interface
56
SPI Interface
57
Figure 25 SPI Interface Timing Diagram
57
ADC Interface
58
LC D Interface
58
Figure 26 LCD (DBI) Interface Reference Circuit Diagram
59
Overall Technical Indicators
60
C Hapter Overview
60
W Orking Frequency
60
G NSS Performance
63
Antenna Requirements
63
Interface Electrical C Haracteristics
65
C Hapter Overview
65
W Orking Storage Temperature
65
Electrostatic Property
65
Module IO Level
66
Power Supply
67
Power C Onsumption C Haracteristics
67
Structural and Mechanical Properties
69
C 20QM Module Mechanical Size
69
Figure 27 Top View and Bottom View of the Module
69
Figure 28 C20QM Module Dimensions
69
Figure 29 Pad Dimensions (Top View)
70
Ordering Information
71
Packaging and Production
72
C Hapter Overview
72
Module Packaging and Storage
72
Figure 30 C20QM Tape Measurements (in MM)
72
Production W Elding
73
Figure 31 Reel Dimensions of C20QM (in MM)
73
Appendix
75
C Hapter Overview
75
Abbreviations
75
Safety and Precautions
77

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