SDAA014
November 2025
AM2752-Q1
,
AM2754-Q1
1
Abstract
How to Use this Document
Trademarks
1
Digital Audio Formats
1.1
I2S
1.2
TDM
2
McASP Overview
3
McASP Connections for AM275x
3.1
McASP Common Configurations
3.1.1
McASP as a Clock Controller
3.1.1.1
Clocks Generated using the Internal Audio PLL
3.1.1.2
Clocks Generated using the AUDIO_EXT_REFCLK AUXCLK Source
3.1.1.3
Clocks Generated using the AUDIO_EXT_REFCLK AHCLK Source
3.1.2
McASP as Clock Peripheral
3.1.2.1
Clock Externally Generated with AUDIO_EXT_REFCLK Input
4
McASP Layout Considerations
4.1
McASP Signals Shared with Bootmode Logic
4.2
McASP Topology for Multiple Devices in Single Clock Domain
5
ASRC Overview
6
McASP Practical Examples
6.1
Audio Playback with Internal Audio PLL for Two Clock Domains
6.2
Audio Playback with External Clock Source and McASP SYNC mode
6.3
Audio Playback with ASRC Bridging Two Clock Domains
7
Key Audio System Design Takeaways
8
References
Application Note
AM275x Audio System Design Guide