SPRUJG7 May   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Important Usage Notes
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 System Components
      1. 2.1.1 System Components Top
      2. 2.1.2 System Components Bottom
    2. 2.2 Power Requirements
    3. 2.3 Setup
    4. 2.4 Header Information
      1. 2.4.1 Connector Pinout
      2. 2.4.2 Debug Connector Pinouts
    5. 2.5 Interfaces
    6. 2.6 Switch Information
    7. 2.7 Indicator LED
    8. 2.8 Test Points
  7. 3Software
  8. 4Hardware Design Files
  9. 5References
  10. 6Trademarks
  11. 7Revision History

2.3 Setup

Typical audio baseboard EVM and TAS67CD-AEC system setup is described below. The TAS67CD-AEC add-on card requires a compatible host processor baseboard that includes the TI audio expansion connector (AEC) interface.

Note: As of the publication of this document the TAS67CD-AEC has only been tested with the AM275-AUDIO-EVM and the AM62D-AUDIO-EVM. Other audio baseboards implementing compatible AEC interface signals don't work in a similar manner.

Setup Steps

  • The baseboard and add-on card system is assembled by attaching the TAS6CD-AEC AEC connector (J1, bottom of the board) with the baseboard EVM AEC1 and/or AEC2 (J13, J12) located on the top of the baseboard EVM.
    • Additional mounting screws can be attached to the TAS67CD-AEC and audio baseboard to provide a level mounting when using the system on a bench top environment.
  • Switch S1 can be setup for RESETSTATZ or PORZ usage depending on attached baseboard EVM reset output options.
  • TAS0/TAS1 audio output banana jack binding posts can be attached to compatible speakers.
  • J13/J15 banana jack binding posts for PVDD/VBAT can be powered from DC source supply. PVDD supply can be powered before the baseboard EVM is powered. Power is gated based on reset signal from attached host board.
  • The audio baseboard EVM can now be powered and TAS67CD-AEC compatible application run.

TAS67CD-AEC AM275-AUDIO-EVM and TAS67CD-AEC Setup Figure 2-5 AM275-AUDIO-EVM and TAS67CD-AEC Setup

External Speaker Setup and Requirements

The TAS67x amplifiers are designed to work with externally attached speakers with load between 2-ohm minimum and 4-ohm typical. This range is typical of many available speaker systems.

The 4-ohm typical loading aligns with the characterized audio and power efficiency performance quoted in the TAS6754-Q1 data sheet. See TAS6754-Q1 Datasheet for full description of TAS67x output loading requirements.