UG522: Mandatory Crystal Adjustment for
EFR32ZG14/EFR32ZG23 Based Products
User's Guide
This document describes the mandatory adjustment of the system
crystal which must be performed on a product based on the
EFR32ZG14 and EFR32ZG23 devices.
The purpose of this document is to describe the required method to match the system
crystal of an EFR32ZG14- or EFR32ZG23-based products to the parasitic of that prod-
uct. The procedure is required to ensure that the crystal tolerances of the product are
within the specifications of the Z-Wave protocol.
KEY POINTS
• About Crystal Tolerances
•
How to Adjust the System Crystal
• Effects of the System Crystal's Production
Calibration
• Second Source Crystal Components
Audience:
The intended readers of this document are:
•
Product design engineers
• Production test engineers
• Z-Wave application programmers
Prerequisites:
The readers of this document are assumed to have knowledge of:
• The Z-Wave protocol
• Basic RF knowledge
• Basic RF measurement skills
Access to the bring-up software tool RailTest is required.
Knowledge and access to the following documents are essential:
• [1] UG523: Bring-Up/Test HW Development User's Guide
• [2] AN961: Bringing Up Custom Devices for the Mighty Gecko and Flex Gecko
Families
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Table of Contents
1.
Abbreviations ...............................3
2. About Crystal Tolerances...........................4
3. How to Adjust the System Crystal .......................6
4. Effect of the Production Calibration the System Crystal ...............8
5. Second Source Crystal Components .....................10
6. References ...............................11
7. Revision History .............................12
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