Cavli Wireless C16QS User manual

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C16QS Hardware Manual
Cavli C16QS
LTE CAT1.bis Module
Hardware Manual
External Release Version 4.1
www.cavliwireless.com

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C16QS Hardware Manual
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COPYRIGHT
THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF CAVLI WIRELESS INC.
TRANSMITTING, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF
THE CONTENT ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF
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OR DESIGN. EVERY EFFORT HAS BEEN MADE IN PREPARATION OF THIS DOCUMENT TO ENSURE ACCURACY OF THE
CONTENTS. BUT ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS DOCUMENT DO NOT
CONSTITUTE A WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.THE INFORMATION IN THIS DOCUMENT IS SUBJECT
TO CHANGE WITHOUT NOTICE DUE TO PRODUCT VERSION UPDATEOR OTHER REASONS. FOR MOST RECENT
DOCUMENTS, ALWAYS REFER THE PRODUCT PORTFOLIO SECTION AT www.cavliwireless.com.
Copyright © Cavli Inc. All rights reserved

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C16QS Hardware Manual
Table of Contents
1 Introduction ....................................................................................................................................... 10
2Module Overview ............................................................................................................................. 11
2.1 Module Introduction.................................................................................................................... 11
2.2 Module Characteristics.............................................................................................................. 12
2.3 Module Function .......................................................................................................................... 14
2.4 Module Working Mode............................................................................................................... 15
3 Interface Application Description ............................................................................................... 16
3.1 Chapter Overview ........................................................................................................................ 16
3.2 Module Interface ......................................................................................................................... 17
3.2.1 C16QS Pin Layout........................................................................................................................................................................................17
3.2.2 C16QS Pin Interface .................................................................................................................................................................................18
3.3 Power interface ........................................................................................................................... 21
3.3.1 Power Supply Design..............................................................................................................................................................................21
3.3.2 Power Reference Circuit....................................................................................................................................................................23
3.3.3 VREF 1.8 Voltage Output ...................................................................................................................................................................23
3.4 Switching Machine Reset Mode........................................................................................... 24
3.4.1 Turn ON Module ..........................................................................................................................................................................................24
3.4.2 Reset Control................................................................................................................................................................................................. 25
3.5 USB Interface ............................................................................................................................... 25
3.6 UART Interface............................................................................................................................. 27
3.6.1 UART0 Serial Port......................................................................................................................................................................................27
3.6.2 UART1 Serial Port.......................................................................................................................................................................................27
3.6.3 UART2 Serial Port..................................................................................................................................................................................... 28

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3.6.4 Serial Port Application Circuit .....................................................................................................................................................29
3.7 USIM Interface.............................................................................................................................. 31
3.7.1 USIM Card Reference Circuit..........................................................................................................................................................31
3.8 General Purpose GPIO Interface............................................................................................. 32
3.9 Network Status Indication Interface..................................................................................... 33
3.9.1 Network Status..............................................................................................................................................................................................33
3.9.2 Module Status Indication..................................................................................................................................................................35
3.10 I2S Interface................................................................................................................................ 36
3.11 I2C Bus ........................................................................................................................................... 36
3.12 SWD Interface............................................................................................................................. 37
3.13 ADC Interface.............................................................................................................................. 37
3.14 Antenna ........................................................................................................................................ 38
3.14.1 RF Trace Reference............................................................................................................................................................................. 40
3.14.2 RF Connector Size..................................................................................................................................................................................42
3.15 Control Interface ....................................................................................................................... 44
3.16 GNSS Interface ........................................................................................................................... 44
3.17 SPI Interface................................................................................................................................ 46
4Overall Technical Indicators......................................................................................................... 47
4.1 Chapter Overview........................................................................................................................ 47
4.2 Working Frequency .................................................................................................................... 47
4.3 GNSS Performances................................................................................................................... 48
4.4 Antenna Requirements.............................................................................................................. 49
5Interface Electrical Characteristics............................................................................................ 50
5.1 Chapter Overview........................................................................................................................ 50
5.2 Working Storage Temperature .............................................................................................. 50

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5.3 Electrostatic Property ............................................................................................................... 50
5.4 Module IO Level ........................................................................................................................... 51
5.5 Power Supply................................................................................................................................ 52
5.6 Power Consumption Characteristics...................................................................................... 52
6Structural and Mechanical Properties....................................................................................... 55
6.1 Chapter Overview ........................................................................................................................ 55
6.2 C16QS Module Mechanical Size................................................................................................ 56
7Ordering Information..................................................................................................................... 59
8Packaging and Production............................................................................................................ 61
8.1 Chapter Overview ........................................................................................................................ 61
8.2 Module Packaging and Storage ............................................................................................. 61
8.3 Production Welding..................................................................................................................... 63
9Warnings ............................................................................................................................................ 65
9.1 CE EU Conformity Statement................................................................................................... 65
9.2 NCC Caution .................................................................................................................................. 65
9.3 IC Information .............................................................................................................................. 65
9.4 FCC Warnings................................................................................................................................. 66
9.4.1 FCC Modular Approval Information Examples for Manual........................................................................66
9.4.2 FCC Radiation Exposure Statement....................................................................................................................................67
9.4.3 OEM Integration Instructions........................................................................................................................................................67
9.4.4 Validity of using the module certification......................................................................................................................68
9.4.5 Upgrade Firmware..................................................................................................................................................................................68
9.4.6 End Product Labeling...........................................................................................................................................................................68
9.4.7 Information that must be placed in the end user manual..........................................................................68
9.4.8 Requirement per KDB996369 D03........................................................................................................................................68

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10 Appendix .......................................................................................................................................... 72
10.1 Chapter Overview ...................................................................................................................... 72
10.2 Abbreviations.............................................................................................................................. 72
10.3 Safety and Precautions........................................................................................................... 74

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C16QS Hardware Manual
VERSION HISTORY
Version
Edit
Date (DD/MM/YYY)
1.0
Initial Version
13/09/2022
1.1
Updated reference circuits
•VBAT power supply
•LDO linear power supply
•Power ON
•Reset
•USB connection
•UART Serial port
•Level conversion chip
•Main Antenna matching circuit
•GNSS Active antenna matching circuit
•GNSS Passive antenna matching circuit
•GNSS VRTC power
Updated module voltage information
19/09/2022
1.2
Updated reference figures of
•Power ON
•Reset
•GNSS active antenna
•USIM reference circuit
Update SPQ values in ordering information
20/09/2022
1.3
Updated the Interface Application Description
08/11/2022
1.4
Updated basic module information
28/11/2022
1.5
Updated Power Key and RESET Key reference circuits
14/12/2022
1.6
Updated the count of GPIOs from thirteen to four under Heading
3.8
20/12/2022
1.7
Updated power consumption details
18/01/2023
1.8
Updated Band List for N.A Variant
18/01/2023
1.9
Updated the tape reel capacity
20/01/2023
2.0
Updated the ordering information (NA bands)
30/01/2023
2.1
Changed GNSS bands and ADC
07/02/2023

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2.2
GNSS Performance parameters updated
15/02/2023
2.3
Updated table 2-1 and 5-1 with new Temperature values
Changed the reset reference circuit (Fig 6)
20/02/2023
2.4
Power Consumption characteristics (Table 5-6) updated
07/03/2023
2.5
AP_READY description updated
10/03/2023
2.6
Power supply information updated (Section 3.3.3)
03/04/2023
2.7
Tx Idle Current Consumption added
10/04/2023
2.8
NET_STATUS Pins updated
18/04/2023
2.9
Net_Status Pin description updated
24/04/2023
3.0
UART 1 Baud Rate updated
10/05/2023
3.1
Updated GNSS and UART interface
Changed pin layout
15/06/2023
3.2
Updated new variants (A.N., L.N., W.W.)
11/07/2023
3.3
Updated uSIM and USB reference circuits
12/07/2023
3.4
UART details updated, Device Driver information added, IN
variant added, ordering information updated
31/07/2023
3.5
Added CE EU Conformity Statement
04/08/2023
3.6
Updated Functional Block diagram
24/08/2023
3.7
Changed pin layout, Bottom view to Top view
31/08/2023
3.8
Updated information related to USIM interface
05/09/2023
3.9
Updated GNSS VRTC input figure
06/09/2023
4.0
Updated Warnings and GNSS Interface note
07/09/2023
4.1
Updated Optimal Working Temperature
Added FCC warnings and IC Information
18/09/2023

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C16QS Hardware Manual
Table of Figures
Figure 1 C16QS Functional Block Diagram .............................................................................................................14
Figure 2 C16QS module Interface definition (top view).........................................................................................17
Figure 3 VBAT power supply .....................................................................................................................................22
Figure 4 LDO linear power reference circuit ...........................................................................................................23
Figure 5 Power-on reference circuit.........................................................................................................................24
Figure 6 Reset reference circuit ................................................................................................................................25
Figure 7 USB connection design circuit diagram.....................................................................................................26
Figure 8 Full-featured serial port design..................................................................................................................29
Figure 9 UART serial port design...............................................................................................................................30
Figure 10 Level conversion chip circuit ....................................................................................................................30
Figure 11 USIM design circuit diagram.....................................................................................................................31
Figure 12 Net light circuit diagram ...........................................................................................................................34
Figure 13 STATUS Pin Reference Circuit.................................................................................................................35
Figure 14 I2C interface reference circuit diagram..................................................................................................37
Figure 15 Main antenna matching circuit.................................................................................................................38
Figure 16 GNSS active antenna matching circuit ....................................................................................................39
Figure 17 GNSS passive antenna matching circuit..................................................................................................40
Figure 18 Coplanar antenna ......................................................................................................................................41
Figure 19 The complete structure of the two-layer PCB microstrip line..............................................................41
Figure 20 The complete structure of the multilayer PCB strip line.......................................................................42
Figure 21 RF connector size chart.............................................................................................................................42
Figure 22 Antenna connector matching plug diagram............................................................................................43
Figure 23 Matching coaxial RF line size....................................................................................................................43
Figure 24 Multi GNSS receiver Block diagram ........................................................................................................45
Figure 25 GNSS VRTC Input......................................................................................................................................46
Figure 26 Top view and bottom view of the module ...............................................................................................55
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
Figure 30 Ordering Information................................................................................................................................59
Figure 31 C16QS Tape Measurements (in mm).......................................................................................................61
Figure 32 Reel Dimensions of C16QS (in mm).........................................................................................................62
Figure 33 Reflow soldering temperature graph ......................................................................................................63

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C16QS Hardware Manual
1 Introduction
This document is the Hardware Manual of the Cavli Wireless solution product C16QS Smart Module, which
describes:
✓The hardware composition and functional features of the module
✓The definition and usage of the application interface
✓The electrical performance and mechanical properties of the module
This document and the other application documents combined will enable users to develop end devices with
Cavli Modules.

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C16QS Hardware Manual
2Module Overview
2.1 Module Introduction
C16QS integrates an application processing subsystem, a communication subsystem, multimedia and
connectivity peripherals to enable a single chip 4G LTE feature phone solution.
The C16QS communication subsystem integrates LTE CAT.1bis technology and a RF transceiver to cover
1/3/5/8/20(E.A), 2/4/5/12/13/66(N.A), 1/3/5/8/18/19/26/28(A.N), 2/3/4/7/8/28(L.A),
or 1/2/3/4/5/8/12/18/19/20/26/28/66 (W.W) bands for worldwide roaming.
The application subsystem runs on a single ARM Cortex M3 processor at 204MHz with integrated peripherals
for connectivity and multimedia.
NOTE
•E.A –Europe and Asia Regions
•N.A –North America Region
•A.N –Australia, New Zealand, Taiwan and South Korea
•I.N –India
•L.A –Latin America
•W.W - Global

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2.2 Module Characteristics
Table 2-1 Key Features
Characteristics
Description
Physical Characteristics
26.5mm x 22.5mm x 2.3mm
Fixed Way
LGA package, patch mount
Operating Voltage
3.4V –4.2V Typical Voltage 3.7 V
Application Processor
ARM Cortex M3 with a clock frequency of 204MHz.
Application
Interface
USIM card
Supports 3.0V/1.8V Supports hot swap function
USB
✓USB2.0 (High-Speed) (only supports Slave mode)
✓Data transfer rate up to 480Mbps
UART
✓UART0(2 lines), UART1(7 lines) and UART2(2 lines)
✓AT commands and data transfer - U1
✓DM data –U0
✓GNSS NMEA –U2
✓The baud rate is up to 3000000bps. Default is 115200bps.
ADC
✓2 Analogue to Digital converter
I2S
✓Compliant with I2S bus protocol
I2C
✓Compliant with I2C bus protocol
✓High speed mode supports 3.3Mbps rate
Network
Indication
✓WWAN_STATE network status indication
✓STATUS Module status
GPIO
✓4 GPIO Interfaces
GNSS
✓GPS, GLONASS, BEIDOU, GALILEO, QZSS, NAVIC
✓SBAS Ranging support
SPI
✓Standard SPI interface
SWD
✓Standard SWD interface (2 Lines)

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NOTE
•When the temperature is in the range of –40°C to –30°C or +75°C to +85°C, some RF
specifications of the C16QS module may not meet the 3GPP standards.
Frequency Band
LTE BANDS:
E.A: - 1/3/5/8/20
N.A: - 2/4/5/12/13/66
A.N: - 1/3/5/8/18/19/26/28
L.A: - 2/3/4/7/8/28
W.W: - 1/2/3/4/5/8/12/18/19/20/26/28/66
Data Network
✓FDD/TDD LTE CAT 1.bis
✓Peak DL 10Mbps/ UL 5Mbps (CAT 1.bis)
AT Command
✓Support for standard AT instruction sets (Hayes 3GPP TS
27.007 and 27.005)
✓Specific AT Query C16QS AT command set
Network Protocol
TCP(S)/HTTP(S)/MQTT(S)/FTP(S)/PPP
TLS versions supported as well
Antenna Interface
✓MAIN x 1
✓GNSS × 1
✓Characteristic impedance 50 Ω
Virtual Network Card
Supports USB virtual network card
Device Drivers
✓USB Ethernet Driver: RNDIS
✓USB Communication Driver: CDC-ACM / COM
Temperature Range
✓Normal working temperature: - 20℃to +55℃
✓Storage temperature: -45℃to +90℃
Humidity
RH5%～RH95%
Module Function Distinction
S on the model number represents the single mode

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2.3 Module Function
C16QS Module mainly consists of the following circuit units:
✓RF Band SAW Duplex array
✓Multi-Band PA
✓Interfaces
The functional block diagram of the C16QS module is shown below：
Figure 1 C16QS Functional Block Diagram

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2.4 Module Working Mode
Table 2-2 work mode
Working mode
Description
Turn off the machine
In the case of shutdown, the module is fully powered off.
Flight Mode
The module closes the module RF circuit, unable to interact with the
network.
Dormancy
The module closes most functions, and it will synchronize with the
network.
Ideal state
Turn on the machine and register the network successfully, in the idle state
Data transmission
The module is in working state and has data interaction with the network.

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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

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3.2 Module Interface
3.2.1 C16QS Pin Layout
C16QS pins are assigned as follows：
Figure 2 C16QS module Interface definition (top view)

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3.2.2 C16QS Pin Interface
The C16QS module has the LGA interface. The module interface definition is shown in the following table:
Table 3-1 Pin name
Pin
No.
Pin name
Pin
No.
Pin name
1
RESERVED
2
ADC1
3
GND
4
I2S_MCLK
5
I2S_LRCK
6
I2S_DIN
7
I2S_DOUT
8
RESERVED
9
USB_DP
10
USB_DM
11
GPIO1
12
RESERVED
13
RESERVED
14
RESERVED
15
PWRKEY_N
16
RESERVED
17
RSTN
18
W_DISABLE
19
AP_READY
20
STATUS
21
USB_BOOT/NET_STATUS
22
UART2_RXD
23
UART2_TXD
24
ADC0
25
AGPIO5
26
GPIO7
27
UART0_TXD
28
UART0_RXD
29
VDD_EXT
30
UART1_DTR
31
GND
32
VBAT_BB
33
VBAT_BB
34
UART1_RXD
35
UART1_TXD
36
UART1_CTS
37
UART1_RTS
38
UART1_DCD
39
UART1_R1
40
I2C_SCL
41
I2C_SDA
42
USIM_PRESENCE

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43
USIM_VDD
44
USIM_RST
45
USIM_DATA
46
USIM_CLK
47
GND
48
GND
49
ANT_GNSS
50
GND
51
RESERVED
52
VBAT_RF
53
VBAT_RF
54
GND
55
GND
56
RESERVED
57
RESERVED
58
GND
59
GND
60
ANT_LTE
61
GND
62
GND
63
I2S_BLK
64
AGPIO7
65
RESERVED
66
RESERVED
67
GND
68
GND
69
GND
70
GND
71
GND
72
GND
73
GND
74
GND
75
NET_STATUS
76
RESERVED
77
RESERVED
78
RESERVED
79
GND
80
GND
81
GND
82
GND
83
GNSS_RXD
84
GNSS_TXD
85
GNSS_VDD
86
GNSS_EN
87
RESERVED
88
RESERVED
89
GND
90
GND
91
GND
92
SWDIO

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93
SWCLK
94
SPI_MISO
95
SPI_MOSI
96
SPI_CLK
97
SPI_CS
98
GNSS_VRTC
99
GNSS_1PPS
100
GND
101
GND
102
GND
Table 3-2 IO parameter definition
NOTE
•The module typically has an IO port level of 1.8V (in addition to the SIM, the SIM card port level
supports 1.8V and 3.0V).
•All RESERVED and unused pin feet need to be left floating
Pin Type
Full Form
IO
Input / Output
PI
Power Input
PO
Power Output
AI
Analog Input
AO
Analog Output
DI
Digital Input
DO
Digital Output
OD
Leaky Open Key