Clock API Developer Guide#

About This Guide#

This guide introduces the Clock Manager Application Programming Interface (API) for the Silicon Labs SiWG917 System-on-chip (SoC). It explains how to integrate, configure, and optimize clock management in embedded applications.

The guide provides implementation details, configuration methods, and debugging practices to help developers manage system clocks using the WiSeConnect software development kit (SDK).

By following this guide, you learn how to:

  • Initialize and configure clock domains across the SiWG917 platform.

  • Use APIs to control frequencies, dividers, and clock sources.

  • Apply low-power and high-performance clock configurations.

  • Troubleshoot, debug, and optimize system timing.

Audience#

This guide is intended for embedded developers and application engineers working with SiWG917-based systems.

You should be familiar with C programming, embedded development workflows, and Simplicity Studio. Use this guide to configure system or peripheral clocks, optimize clock behavior for low-power IoT applications, or troubleshoot timing-related issues.

Purpose#

The Clock Manager APIs provide fine-grained control over the system clock tree on the SiWG917 SoC.

These APIs allow developers to configure and switch clock sources, dividers, and phase-locked loop (PLL) settings to meet application requirements.

Effective clock management helps achieve the following goals:

  • Performance optimization for compute-intensive workloads.

  • Power savings during low-activity or sleep modes.

  • Stable synchronization across system and peripheral domains.

By applying the techniques in this guide, developers can ensure predictable timing, reliable transitions, and energy-efficient operation across all system components.

Scope#

This document provides end-to-end guidance on using the Clock Manager APIs for the SiWG917 SoC.

The guide covers:

  • Software-level implementation and integration using the WiSeConnect SDK in Simplicity Studio.

  • Initialization and configuration of clock sources, frequencies, and dividers.

  • Practical usage scenarios with API examples.

  • Low-power clock management techniques.

  • Debugging and error-handling procedures.

  • Best practices for optimizing timing and performance in embedded systems.

Hardware and Software Components#

This guide assumes the use of the following hardware and software components:

  • Silicon Labs SiWG917 evaluation kits and modules — see the WiSeConnect SDK Release Notes for supported boards.

  • Simplicity Studio IDE — the primary development environment for WiSeConnect SDK projects.

  • WiSeConnect SDK — available on GitHub.

  • Serial console and logic analyzer for runtime debugging and clock validation.