The Qualcomm QCC-3040-0-CSP90B-TR-01-0 is a versatile and affordable Bluetooth audio SoC aimed at providing key features for entry-level true wireless stereo (TWS) devices. It is specifically designed for manufacturers that want to deliver high-quality audio performance and long battery life while keeping costs low.

One of the core features of the QCC3040 is TrueWireless Mirroring. This technology ensures that the Bluetooth connection between the two earbuds remains stable and seamless. In this setup, only one earbud maintains an active connection to the source (e.g., a smartphone), while the other mirrors the connection. If the active earbud drops its connection, the mirrored earbud instantly takes over without any interruption in audio. 

The Bluetooth 5.2 support is a standout feature of the QCC3040, offering improved connection stability, faster pairing, and enhanced range over previous versions. Bluetooth 5.2 also helps reduce power consumption, further contributing to the extended battery life of the device. 

The compact CSP90B package makes the QCC3040 ideal for manufacturers who want to create small, lightweight wireless earbuds or headphones. Despite its small size, the SoC delivers robust performance with all the essential features needed for modern wireless audio devices.