1. Abstract

The DA1470x is a family of multi-core wireless microcontrollers, combining the latest Arm Cortex M33™ application processor with floating-point unit together with a dedicated sensor node controller. It also provides advanced power management functionality, a Display Controller and a Graphic Processing Unit (GPU), a cryptographic security engine, analog and digital peripherals, and a software configurable protocol engine with a Bluetooth® 5.2 low energy radio. This document focuses on the operation of the Voice Activity Detection (VAD) engine of DA1470x. It describes additionally how the VAD can be combined with a voice recognition engine from Cyberon to support a complete hot word detection solution for predefined commands.