Qualcomm QCC3083 Bluetooth 5.4-based LE Audio Broadcast Speaker Solution

Bluetooth is a short-range wireless communication technology that can realize convenient, flexible, secure, low-cost and low-power data and voice communication between devices. Bluetooth technology can effectively simplify the communication between mobile communication terminals, and also successfully simplify the communication between the devices and the Internet, so that the data transmission becomes faster and more efficient, and widens the way for wireless communication.

The Bluetooth Core Specification v5.4 was approved by the Bluetooth SIG on January 31, 2023 and has been officially released to the public. Widely used, users' need for wireless access is becoming more prominent.

The new features in Bluetooth v5.4 further enhance the security of Bluetooth wireless communications technology, help improve the user experience of Bluetooth mesh networks and GATT-based Bluetooth applications, and build on the new features to develop new Bluetooth application specifications.

The new features of Bluetooth 5.4 are mainly in the following four areas:

1. Support for Periodic Announcement with Response (PAwR)

PAwR is a new BLE logic transmission layer, is a support for connectionless, two-way, one-to-many, a low-power topology.

2. Encrypted Broadcast Data (EAD) support

This feature provides a standardized method to encrypt data in broadcast packets, and the encrypted broadcast data can only be decrypted by devices with the same key.

The encrypted broadcast data can only be decrypted by a device with the same key. Of course, the encryption of the broadcast packet requires a gatt connection between the two devices before the encrypted broadcast key can be generated.

3.LE GATT Security Level Characteristics

The device can now use the GATT security level feature to indicate the security mode and security level of the device.

4. Broadcast Code Selection

 When sending BLE extended broadcasts, it is now possible to choose which Codec encoding method to use for sending.

Qualcomm's QCC3083 chip is a Bluetooth v5.4 specification with many features, including support for LE Audio and Auracast broadcast audio. With Auracast broadcast audio users will be able to share music with many Bluetooth speakers or headphones so their friends and family can share the same experience. 3083 features support for Qualcomm's Snapdragon Sound lossless, low-latency and powerful music streaming technology. high resolution - 24-bit 96kHz audio, I2 audio, and I3 audio. bit 96kHz audio, I2S input/output interfaces, and Qualcomm's CVC call noise reduction algorithm make the QCC3083 ideal for speaker applications.

Application Scenarios:

• Home scenarios---playing music, voice-controlled home devices.
• Business Scenario---Playing music, notification, controlling lights and temperature, searching for products, placing orders, etc. in shopping malls and hotels.
• Medical Scene---Newest information notification, schedule reminder, medical information, home rehabilitation guidance.
• Educational Scene---Play songs, tell stories, play interactive games, and so on.

►Scene Application

►Products

►Display Board

►Solution Block Diagram

►Core Technology Advantages

QCC3083 has a series of technical features as below:

1. Compliant with Bluetooth v5.4 specification, supports LE Audio LC3 codec audio and Auracast broadcast audio.

2. Main frequency up to 240 MHz Qualcomm's Kalimba audio DSP.

3. High-performance 24-bit 96kHz stereo audio interface.

4. Supports up to 6 digital and analog microphones.

5. Support 3-microphone call noise reduction.

6. Support Qualcomm aptX and aptX HD, aptX Adaptive, aptX Lossless, Snapdragon Sound.

7. Rich interfaces: UART, I²C/SPI, USB 2.0, I²S, PIO.

8. VFBGA small package: 134-ball 6.7mmx 7.4mmx 1.0mm

►Program Specifications

Audio system:

1. 240 MHz main frequency audio processing DSP.

2. 384 KB RAM and 1024 KB RAM.

Application System:

1. 32-bit, dual 80 MHz main frequency application processing DSP.

2. Support external 32 or 80 MHz QSPI Memory.

Bluetooth system:

1. Bluetooth v5.4 specification, 1M/2 Mbps BLE, LE audio.

2. Output power Chass 1 standard, 13 dBm.

Li-ion battery charging:

1. Built-in high performance battery charger, support internal 200mA, external 1800mA charging current.

2. Supports charging cut-off voltage up to 3.65 to 4.4V.

3. Built-in temperature detection to control charging current.

Power management:

1 Support USB, lithium battery, external power supply (2.8 V to 6.5 V) power.

2. Output power Chass 1 standard, 13 dBm.

3. Built-in dual SMPS outputs for chip and external use, 1.8V and 1.1V.

FAQ1: QCC3083 can support up to how many speaker devices can be connected ah?

A: Auracast audio broadcasting is a new Bluetooth feature that enables audio transmitters (e.g. cell phones, laptops, TVs, etc.) to broadcast audio to an unlimited number of nearby Bluetooth audio receivers (e.g. headphones, speakers, etc.).

FAQ2: What is the maximum distance of QCC3083?

A: The maximum output power of QCC3083 is 13dBm, and it can reach up to 30 meters if it is connected to a receiver with a better antenna.

FAQ3: Can the QCC3083 be used as a single speaker or multiple speakers?

A: Yes, ADK corresponding headset project can support.

FAQ4: What is the highest audio sampling rate of QCC3083?

A: It supports up to 24bit - 96kHz stereo audio.

FAQ5: How do I develop a product with QCC3083?

A: First of all, we need to contact the corresponding business to sign NDA with Qualcomm, and then open Qualcomm account, you can go to Qualcomm's official website to download the corresponding documents and ADK and other information, the customer can draw the board, send it to the side of the evaluation of the UDU, no problem, then you can send the board to wash the board, and then the board will come back to the customer's product features can be used in the development of the corresponding ADK, such as encountering the need for assistance can be If you encounter any need for assistance, you can ask the hardware and software staff of the University to help debug together.