Live Audio Format

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

Audio data is written into memory in an AES3 standard format. The mapping for a 32-bit sample is shown below.

31

30

29

28

27:4

3:0

Parity (P)

Channel Status (C)

User Bit (U)

Validity (V)

Audio Sample Word

Preamble Code:

4'b0001: Subframe1 start of audio block.

4'b0010: Subframe1

4'b0011: Subframe2

The metadata (such as P, C, U, V and preamble code) is embedded along with the live data input. For non-live data, registers are provided to input the metadata. The audio stream selector picks two streams per your selection and forwards them to the output.