The SMPTE UHD-SDI TX Subsystem provides an ancillary data (ANC) interface controlled by the Enable ANC Data (Incl. Audio) Insertion I/F parameter in the Vivado ® IDE and can be used to embed the SDI audio in the SDI video stream. This section provides an overview of embedding SDI audio into native SDI stream(s) using the AMD UHD-SDI Audio IP core. See the UHD-SDI Audio LogiCORE IP Product Guide (PG309) [Ref 14] for more details. The following figure shows the UHD-SDI audio embed use case.
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X-Ref Target - Figure 3-2 
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The AMD UHD-SDI Audio IP core is configurable as an audio embedder or an audio extractor. When configured as an audio embedder, it can embed up to 32 channels (16 channel pairs) of audio onto an SDI stream.
The UHD-SDI Audio IP is designed in accordance with SMPTE ST 272 for SD-SDI and SMPTE ST 299 for HD/3G/6G/12G SDI. It supports audio embedding at multiple audio sample rates (32 kHz, 44.1 kHz and 48 kHz).