Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 90)

4–2 Chapter 4: SDI Audio IP Cores
SDI Audio Embed MegaCore Function
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
Functional Description
Figure 4–1 shows a block diagram of the SDI Audio Embed MegaCore function.
The SDI Audio Embed MegaCore function consists of an encrypted audio embedder
core and a register interface block that provides support for an Avalon-MM control
bus.
The audio embedder accepts the audio in AES format, and stores each channel pair in
an input FIFO buffer. As the embedder places the audio sample in the FIFO buffer, it
also records and stores the video clock phase information.
When accepting the audio in AES format, the SDI Audio Embed MegaCore function
either maintains the channel-status details or replaces the details with the default or
the RAM versions.
Figure 4–1. SDI Audio Embed MegaCore Function Block Diagram
Avalon-ST Audio to Audio Embed with Avalon Only
FIFO FIFO FIFO FIFO FIFO FIFO FIFO FIFO
Audio
Embedder
SD/HD/3G-SDI SD/HD/3G-SDI
Avalon-MM
Audio Embed or Audio Embed with Avalon
SD/HD Audio Embedder
Packet
Creation
Packet
Distribution
Channel
Status RAM
Register Interface