SDAA014 November   2025 AM2752-Q1 , AM2754-Q1

 

  1.   1
  2.   Abstract
  3.   How to Use this Document
  4.   Trademarks
  5. 1Digital Audio Formats
    1. 1.1 I2S
    2. 1.2 TDM
  6. 2McASP Overview
  7. 3McASP Connections for AM275x
    1. 3.1 McASP Common Configurations
      1. 3.1.1 McASP as a Clock Controller
        1. 3.1.1.1 Clocks Generated using the Internal Audio PLL
        2. 3.1.1.2 Clocks Generated using the AUDIO_EXT_REFCLK AUXCLK Source
        3. 3.1.1.3 Clocks Generated using the AUDIO_EXT_REFCLK AHCLK Source
      2. 3.1.2 McASP as Clock Peripheral
        1. 3.1.2.1 Clock Externally Generated with AUDIO_EXT_REFCLK Input
  8. 4McASP Layout Considerations
    1. 4.1 McASP Signals Shared with Bootmode Logic
    2. 4.2 McASP Topology for Multiple Devices in Single Clock Domain
  9. 5ASRC Overview
  10. 6McASP Practical Examples
    1. 6.1 Audio Playback with Internal Audio PLL for Two Clock Domains
    2. 6.2 Audio Playback with External Clock Source and McASP SYNC mode
    3. 6.3 Audio Playback with ASRC Bridging Two Clock Domains
  11. 7Key Audio System Design Takeaways
  12. 8References

How to Use this Document

This document is meant to provide a base level understanding of audio data transmission, TI audio peripherals, and how to use these peripherals for a multizone audio system. The document explains the fundamentals for audio system design, starting with detailing how digital audio is sent or received and applying that to the McASP and ASRC configuration to enable a variety of different system use cases.

Chapter Overview Chapter link
Basic explanations of digital audio formats supported by the McASP Section 1
Basic overview of the McASP peripheral and the various configuration options available Section 2
Detailed explanations of the AM275x-specific implementation of McASP instances for different use cases Section 3
Highlights the two biggest considerations for layout design of the McASP Section 4
Basic overview of the ASRC module implenting the module for additional flexibility Section 5
Examples of different configurations of the McASP and ASRC for practical use cases involving external components Section 6
Key audio system design takeaways Section 7