A²B™ 1.0 Automotive Audio Bus Solutions

A²B 1.0 is a high bandwidth (50 Mbps), low latency (50 µs), bidirectional digital audio bus capable of transporting I²S/TDM/PDM data and SPI/I²C control information together with clock and power (up to 50W) over a single, low-cost UTP cable. The system topology is comprised of a single main node with up to 16 daisy-chainable subnodes supporting distances up to 30 m between nodes and 300 m over the entire daisy chain. The clock and data are synchronous on all nodes in an A²B 1.0 network, ensuring consistent low latency across the entire network regardless of node position.

Over the past decade, A²B 1.0 has become synonymous with high performance, low latency audio interconnect with hundreds of millions of units deployed across multiple applications, including automotive, consumer, and industrial.