SLAU904A October   2023  – December 2023

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Setup
    2. 2.2 AC-MB Settings
      1. 2.2.1 Audio Serial Interface Settings
        1. 2.2.1.1 USB Mode
        2. 2.2.1.2 Optical or Auxiliary Analog Audio Input Mode
        3. 2.2.1.3 External Audio Interface Mode
      2. 2.2.2 AC-MB Power Supply
    3. 2.3 TAx5x42EVM-K Hardware Settings
      1. 2.3.1 TAx5x42 EVM Input Hardware Settings
        1. 2.3.1.1 Line Inputs
        2. 2.3.1.2 On-board Microphone Input
      2. 2.3.2 TAx5x42 EVM Output Hardware Settings
        1. 2.3.2.1 TAx5x42 Analog Audio Output
      3. 2.3.3 Multi-Function Hardware Configurations
        1. 2.3.3.1 MD0 Hardware Configurations
        2. 2.3.3.2 MD1 and MD2 Hardware Configurations
        3. 2.3.3.3 MD3 Hardware Configurations
        4. 2.3.3.4 MD4 and MD5 Hardware Configurations
        5. 2.3.3.5 MD6 (DIN/DOUT) Hardware Configuration
  9. 3Software
    1. 3.1 System Overview
    2. 3.2 Configuration Example
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
      1. 4.3.1 TAC5242 EVM Bill of Materials
      2. 4.3.2 TAC5142 EVM Bill of Materials
      3. 4.3.3 TAA5242 EVM Bill of Materials
      4. 4.3.4 TAD5242 EVM Bill of Materials
      5. 4.3.5 TAD5142 EVM Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6References
  13. 7Revision History

2.3.1.2 On-board Microphone Input

For the on-board microphone input configuration shown in Figure 3-8, the TAx5x42 records the audio captured from the microphones MK1 (ECM) or U5 (Analog MEMS), which is located on the bottom of the board. Electret Microphone (MK1) is connected to IN1P/M, and MICBIAS is used to power the on-board microphone, so header J8 must be installed. For MEMS microphone (U5), this can be configured as either a single ended or differential input and is connected to IN2P/M. There must not be any connections to J2 or J3 while the on-board microphone is used to preserve the performance of the microphone. A possibility that the gain adjustment can be needed in the device depends on the microphone sensitivity.