SLAU964 August   2025

 

  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. 2Quick Start Guide
    1. 2.1 TAS2020EVM Setup for Hardware Mode
    2. 2.2 TAS2020EVM Setup for Software Mode
  9. 3Hardware
    1. 3.1 I2C Target Address Selection
    2. 3.2 PVDD Power Supply Options
    3. 3.3 VDD Power Supply Options
    4. 3.4 IOVDD Power Supply Options
    5. 3.5 Speaker Outputs
    6. 3.6 AC-MB Settings
      1. 3.6.1 Audio Serial Interface Settings
      2. 3.6.2 USB Audio AC-MB Settings
      3. 3.6.3 External Audio AC-MB Settings
    7. 3.7 AC-MB Power Supply
    8. 3.8 2-Channel Configuration
    9. 3.9 4-Wire Measurement of Load
  10. 4Troubleshooting
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Revision History

4 Troubleshooting

This section provides a series of resolutions for possible errors during the evaluation of TAS2020EVM.

  • EVM connects to PPC3 but shows invalid hardware error:
    • Make sure J3-IOVDD on the companion AC-MB board is set to either 3.3V or 1.8V. Please note 1.2V is not supported by TAS2020 and is not to be used.
    • Make sure J54 on TAS2020EVM is open. This is an optional jumper that are only be used in special cases when connecting 2 EVMs together as described in Section 3.8.
    • Make sure J18 and J19 at the bottom side of TAS2020EVM are shorted. These are I2C SDA and SCL related jumpers and are to be open only when evaluating TAS2020 in Hardware mode.
    • Make sure EEPROM is properly programmed to work correctly for TAS2020EVM. Use I2C Master tool within PPC3 to run these couple of commands:
      • w a0 00 00
      • r a0 00 1a

      Compare the resulting values with the ones below:

      54 41 53 32 30 32 30 2d 45 56 4d 00 52 45 56 2d 41 00 53 2f 4e 2d 30 30 30 30

      If the values are not the same, run this command:

      w a0 00 00 54 41 53 32 30 32 30 2d 45 56 4d 00 52 45 56 2d 42 00 53 2f 4e 2d 30 30 30 30

      TAS2020EVM EEPROM Programming ScriptFigure 4-1 EEPROM Programming Script
  • EVM connects and configures correctly but there is no audio output:
    • TAS2020EVM operate as a sound-card. Make sure the volume is properly set and that the device is not muted.
    • Make sure the EVM is selected as the playback device.
      TAS2020EVM Device Selection and Volume SettingsFigure 4-2 Device Selection and Volume Settings