Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 89)

February 2013 Altera Corporation Serial Digital Interface (SDI) MegaCore Function
User Guide
4. SDI Audio IP Cores
The SDI Audio IP cores ease the development of video and image processing designs.
For some instances, you combine the audio and video into one digital signal, and at
other times you process the audio and video signals separately.
You can use the following cores to embed, extract or convert audio:
■ SDI Audio Embed MegaCore Function
■ SDI Audio Extract MegaCore Function
■ Clocked Audio Input MegaCore Function
■ Clocked Audio Output MegaCore Function
You can instantiate the SDI Audio with the SDI MegaCore function, and configure
each SDI Audio core at run time using an Avalon-MM slave interface.
SDI Audio Embed MegaCore Function
The SDI Audio Embed MegaCore function embeds audio into the SD-, HD-, and
3G-SDI video standards. The format of the embedded audio is in accordance with the
SMPTE272M standard for the SD-SDI video standard, or in accordance with the
SMPTE299M standard for HD-SDI and provisionally for 3G-SDI video standard. This
MegaCore function supports AES audio format for 48-kHz sampling rate.
The SDI Audio Embed MegaCore function embeds up to 16 channels or 8 channel
pairs. The input audio can be any of the sample rates permitted by the
SMPTE272M-A and SMPTE299M standards; synchronous to the video. If you want to
embed audio pairs together in a sample audio group, the audio pairs must be
synchronous with each other.