The Audio Engineering Society together with the European Broadcasting Union have developed the AES3/EBU digital audio transmission standard, a serial point-to-point interface that carries digital audio data over a standard cable. Audio data is typically in pulse code modulation (PCM) format. The AES3/EBU reference design also supports compressed audio and non-audio data transmission. The information sent over the AES3/EBU is non-return to zero (NRZ) coded with the bi-phase mark (BPM) code so clock and data can be recovered on the receive side of the interface.
The AES3/EBU reference design provides both a transmitter and a receiver. The receiver extracts the data and the clock from an incoming AES3/EBU stream, and stores the parallel audio data and control bits into a FIFO buffer.
The received information can be extracted from the FIFO buffer for processing, or sent directly to the transmitter. The AES3/EBU nominal data rate is directly related to the source audio sample rate. The receiver's input data rate is set at compile time to a fixed frequency, supporting PCM sample rates up to 192 kHz.
Block Diagram 
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