Automotive Ethernet Audio Video Bridging (AVB)
NXP Automotive audio video bridging (AVB) software provides a complex AVB solution for multi-channel audio streaming and syntonized audio playback over multiple audio end nodes. It is optimized for the NXP Power Architecture® and Arm® Processors with minimal resource usage due to a "zero-copy" approach with advanced DMA support.
The AVB stack supports single-core and multi-core designs with different partitioning options. It implements synchronous data stream playback (accurate frequency and phase) for multi-channel audio streams received via Ethernet, an external source or memory. It further features audio sample rate conversion with correctly maintained data order within the TDM, a virtual Autosar Ethernet driver, an inter-core communication module, diagnostic data output (Ethernet/UART) and extended functions like audio output muting and locking.
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Features
- Multi-channels audio streaming
- Syntonized audio playback over multiple audio end nodes
- Highly optimized embedded Solution for Ethernet AVB and Audio Framework designed for Resource Constrained Systems and embedded Realtime OS
- Audio samples processing without CPU involvement (enhanced DMA algorithms)
- Streaming of audio data from external source or memory (gong sound)
- Audio data management and interconnection of stream data sources and sinks
- Audio sample rate conversion (48kHz, 44.1kHz)
- Optional Virtual Autosar Ethernet driver for the second core
- Intercore communication interface
- The diagnostic data output (Ethernet/UART) and significant event callbacks
- Enhanced functions like audio output muting
- Configuration, initialization and handling of the SAI, DMA, Asynchronous Sample Rate Converter peripherals
- Media clock capture and recovery
- Ethernet AVB RTOS System Solution Pure embedded solution
- Abstraction through OS abstraction layer, currently available for Autosar/OSEK OS and FreeRTOS
