Integration Guide
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VZM20Q
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Table Of Contents
Module Integration Guide
Preface
Legal Notices
Document Revision History
About this Guide
Purpose and Scope
Who Should Read this Document
Reference Documentation
Changes in this Document
Documentation Conventions
Introduction
1.1 System Architecture
1.2 Recommended Design Flow
1.2.1 Design Modifications
1.2.2 Schematics Review
1.2.3 PCB Placement and Layout Review
1.2.4 Optimization
1.2.5 Functional Validation
1.2.6 Manufacturing Recommended Process
Manufacturing Process
2.1 Manufacturing Process Overview
2.2 Module Upgrade
Hardware Integration Recommendations
3.1 Power Supply
3.1.1 Synthesis of the Power Supplies
3.1.2 Power Supply Circuit Example
3.1.3 Module Operating Mode
3.2 SIM Interface
3.2.1 Interface Description
3.2.2 Other Hardware Considerations
3.2.3 Software-Configurable Options
3.3 Host Communications Signals
3.3.1 Introduction to UART Interfaces
3.3.2 General Notes on UART Connections
3.3.3 UART0 Interface
3.3.4 UART1 Interface
3.3.5 UART2 Interface
3.4 RF Interface
3.4.1 RF Signals
3.4.2 Circuit Diagram Example
3.4.3 Test Points and Measurement Access
3.4.4 Antennas and RF Design Considerations
3.5 Reset and Environmental Signals
3.6 GPIO Control Interface
3.6.1 Interface Description
3.6.2 Software Configurable Options
PCB Layout Rules
4.1 Placement
4.2 Trace Characteristic Design
4.2.1 Digital Traces
4.2.2 Power Supply Traces
4.2.3 RF Traces
4.2.4 Controlled Impedance Traces
4.2.5 Grounding
Bring-Up and Testing
5.1 Introduction
5.2 Prerequisites
5.3 Functional Verification without Assembled Module
5.3.1 Power Supply
5.3.2 RF Path
5.4 Functional Verification with Assembled Module
5.4.1 Power Supply
5.4.2 Confirm Module Power-Up Operation (UART1)
5.4.3 GPIOs
5.4.4 SIM Communication
5.5 LTE RF Performance Test
5.5.1 Test Configuration
5.5.2 Procedure
5.5.3 Troubleshooting
Hardware Test Preparation
A.1 RF Interfaces Preparation
A.1.1 LTE RF Test Preparation
Abbreviations
I
NTRODUCTION
S
YSTEM
A
RCHITECTURE
2
P
ROPRIETARY
M
ODULE
I
NTEGRATION
G
UID
E
SEQUANS Communications
Figure 1-2:
VZM20Q Mounted on Sk
ywire™ 4G LTE CAT M1 Embedded
Modem
Figure 1-3:
Skywire™ 4G L
TE CA
T M1 Embedded Modem - Bottom View
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