SBAU479 December   2024 TAA3020

 

  1.   1
  2. 1Features
  3. 2Description
  4.   Trademarks
  5. 3Evaluation Module Overview
    1. 3.1 Introduction
    2. 3.2 Kit Contents
    3. 3.3 Specifications
    4. 3.4 Device Information
  6. 4Hardware Overview
    1. 4.1 AC-MB Settings
      1. 4.1.1 Audio Serial Interface Settings
        1. 4.1.1.1 USB
        2. 4.1.1.2 Optical or Auxilary Analog Audio Input
        3. 4.1.1.3 External
      2. 4.1.2 AC-MB Power Supply
    2. 4.2 TAA3020EVM-PDK Hardware Settings
      1. 4.2.1 Line Inputs
      2. 4.2.2 Onboard Microphone Configuration
      3. 4.2.3 External Microphone Configurations
  7. 5Software Overview
    1. 5.1 PurePath Console 3 Installation
    2. 5.2 TAA3020EVM GUI Installation
      1. 5.2.1 Software Setup
  8. 6GPIO1 Settings
  9. 7Master Mode Operation
  10. 8Quick Start
    1. 8.1 Configuring the Audio Serial Bus for the I2S Output
    2. 8.2 Saving a Configuration
  11. 9Schematic and Bill of Materials
    1. 9.1 TAA3020EVM-PDK Schematic and Bill of Materials
      1. 9.1.1 TAA3020EVM-PDK Schematic
      2. 9.1.2 TAA3020EVM-PDK Bill of Materials
    2. 9.2 AC-MB Schematic and Bill of Materials
      1. 9.2.1 AC-MB Schematic
      2. 9.2.2 AC-MB Bill of Materials
    3. 9.3 Matlab Audio Capture Example

4.1.1.1 USB

The serial interface clocks and data are provided from the USB interface. The sampling rate and format are determined by the USB audio class driver on the operating system. The default settings for the USB audio interface are 32-bit frame size, 48-kHz sampling rate, BCLK and FSYNC ratio is 256, and the format is time-division multiplexing (TDM).

The AC-MB is detected by the OS as an audio device with the name TI USB Audio UAC2.0. Figure 4-2 illustrates the AC-MB audio setting for the USB mode of operation.

TAA3020 AC-MB USB Audio SettingFigure 4-2 AC-MB USB Audio Setting