Cavli Wireless C16QS - Interface Application Description

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C16QS Hardware Manual

3 Interface Application Description

3.1 Chapter Overview

This chapter mainly describes the interface definition and application of this module. It contains the

following sections:

• Module Interface

• Power Interface

• Switching Machine Reset Mode

• USB Interface

• UART Interface

• USIM Interface

• GPIO Interface

• Network Status Indicator Interface

• I2S Interface

• I2C Bus

• SWD Interface

• Antenna

• Control Interface

• ADC Interface

• GNSS Interface

• SPI Interface

Main Page

Table of Contents3
Introduction10
Module Overview11
Module Introduction11
Module Characteristics12
Module Function14
Figure 1 C16QS Functional Block Diagram14
Module Working Mode15
Interface Application Description16
Chapter Overview16
Module Interface17
C16QS Pin Layout17
Figure 2 C16QS Module Interface Definition (Top View)17
C16QS Pin Interface18
Power Interface21
Power Supply Design21
Figure 3 VBAT Power Supply22
Power Reference Circuit23
VREF 1.8 Voltage Output23
Figure 4 LDO Linear Power Reference Circuit23
Switching Machine Reset Mode24
Turn on Module24
Figure 5 Power-On Reference Circuit24
Reset Control25
USB Interface25
Figure 6 Reset Reference Circuit25
Figure 7 USB Connection Design Circuit Diagram26
UART Interface27
UART0 Serial Port27
UART1 Serial Port27
UART2 Serial Port28
Serial Port Application Circuit29
Figure 8 Full-Featured Serial Port Design29
Figure 9 UART Serial Port Design30
Figure 10 Level Conversion Chip Circuit30
USIM Interface31
USIM Card Reference Circuit31
Figure 11 USIM Design Circuit Diagram31
General Purpose GPIO Interface32
Network Status Indication Interface33
Network Status33
Figure 12 Net Light Circuit Diagram34
Module Status Indication35
Figure 13 STATUS Pin Reference Circuit35
I2S Interface36
I2C Bus36
SWD Interface37
ADC Interface37
Figure 14 I2C Interface Reference Circuit Diagram37
Antenna38
Figure 15 Main Antenna Matching Circuit38
Figure 16 GNSS Active Antenna Matching Circuit39
RF Trace Reference40
Figure 17 GNSS Passive Antenna Matching Circuit40
Figure 18 Coplanar Antenna41
Figure 19 the Complete Structure of the Two-Layer PCB Microstrip Line41
RF Connector Size42
Figure 20 the Complete Structure of the Multilayer PCB Strip Line42
Figure 21 RF Connector Size Chart42
Figure 22 Antenna Connector Matching Plug Diagram43
Figure 23 Matching Coaxial RF Line Size43
Control Interface44
GNSS Interface44
Figure 24 Multi GNSS Receiver Block Diagram45
SPI Interface46
Figure 25 GNSS VRTC Input46
Overall Technical Indicators47
Chapter Overview47
Working Frequency47
GNSS Performances48
Antenna Requirements49
Interface Electrical Characteristics50
Chapter Overview50
Working Storage Temperature50
Electrostatic Property50
Module IO Level51
Power Supply52
Power Consumption Characteristics52
Structural and Mechanical Properties55
Chapter Overview55
Figure 26 Top View and Bottom View of the Module55
C16QS Module Mechanical Size56
Figure 27 Front View and Side View of the Module (Unit: MM)56
Figure 28 Bottom View of the Module (Unit: MM)57
Figure 29 Recommended Footprint (Top View) (Unit: MM)58
Ordering Information59
Figure 30 Ordering Information59
Packaging and Production61
Chapter Overview61
Module Packaging and Storage61
Figure 31 C16QS Tape Measurements (in MM)61
Figure 32 Reel Dimensions of C16QS (in MM)62
Production Welding63
Figure 33 Reflow Soldering Temperature Graph63
Warnings65
CE EU Conformity Statement65
NCC Caution65
IC Information65
FCC Warnings66
FCC Modular Approval Information Examples for Manual66
FCC Radiation Exposure Statement67
OEM Integration Instructions67
Validity of Using the Module Certification68
Upgrade Firmware68
End Product Labeling68
Information that Must be Placed in the End User Manual68
Requirement Per KDB996369 D0368

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