SPRUJE8 December   2024 AM2754-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Preface Read This First
      1. 1.2.1 Important Usage Notes
    3. 1.3 Kit Contents
    4. 1.4 Device Information
      1. 1.4.1 Security
    5. 1.5 Audio Expansion Connectors
  6. 2Hardware
    1. 2.1  Component Identification
    2. 2.2  Power Requirements
      1. 2.2.1 Power Input Using USB Type-C Connector
      2. 2.2.2 Power Status LEDs
      3. 2.2.3 Power Tree
      4. 2.2.4 Power Sequence
      5. 2.2.5 PMIC
    3. 2.3  Reset
    4. 2.4  Clock
    5. 2.5  Boot Mode Selection
    6. 2.6  Header Information
    7. 2.7  Push Buttons
    8. 2.8  Switches
    9. 2.9  Interfaces
      1. 2.9.1 Ethernet Interface
        1. 2.9.1.1 Ethernet Add-on Connectors
      2. 2.9.2 Audio Interfaces
        1. 2.9.2.1 Audio Clocking
        2. 2.9.2.2 McASP
        3. 2.9.2.3 MLB
    10. 2.10 AEC Mapping
      1. 2.10.1 Audio Expansion Connector 1
      2. 2.10.2 Audio Expansion Connector 2
    11. 2.11 Test Points
  7. 3Hardware Design Files
  8. 4Additional Information
    1. 4.1 If You need Assistance
    2. 4.2 Trademarks
  9. 5References
    1. 5.1 Reference Documents
    2. 5.2 Other TI Components Used This Design
  10. 6Revision History

1.5 Audio Expansion Connectors

The AM275x EVM features two symmetric shielded 80-pin Audio Expansion Connectors (AEC1 & AEC2) for external Audio device interfacing. AEC1 and AEC2 are placed at fixed distances and specific locations on the left and right side of the AM275x EVM.

The AEC Pinout includes:

  • Interspersed Ground Pins to limit EMI
  • Audio
    • 2x McASP instances
      • 8 Serializers for both instances
      • transmit and receive bit clock/frame sync for both instances
    • Reference clock input/output to/from the daughter card
    • 2x eCAP inputs
  • General Connectivity
    • SPI, I2C, MCAN, UART
  • Power
    • 5V, I/O VDD
  • 3x PWM Channels
  • Up to 47 GPIOs
  • 10x Reserved pins for futureproofing

For more information on Audio expansion connectors refer to the AEC Mapping chapter.