Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 114)

4–26 Chapter 4: SDI Audio IP Cores
Design Example
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
Components
Figure 4–9 shows a high-level block diagram of the design example.
The following sections describe the various elements in Figure 4–9 .
SDI Transmitter P0
The triple-standard SDI transmitter that outputs a 3G-SDI (2.970 Gbps), HD-SDI
(1.485 Mbps), or SD-SDI (270 Mbps) data stream. This transmitter gets the parallel
data source from the SDI Audio Embed MegaCore function. The SDI Audio Embed
component embeds the internally generated audio in AES format into the internally
generated video. The transmitter transmits the serial signal through a BNC cable to
the receiver of the SDI duplex instance.
SDI Duplex
The triple-standard SDI duplex provides a full-duplex SD-SDI, HD-SDI, and 3G-SDI
standards. The SDI duplex instance routes the received data to the SDI Audio Extract
MegaCore function to extract the AES audio. The SDI Audio Embed MegaCore
function embeds the internally generated audio in AES format into the internally
generated video. The transmitter in this duplex connects its output to the external
waveform monitor, such as the WFM700.
Figure 4–9. High-Level Block Diagram of Stratix IV GX FPGA
Video Pattern
Generator P0
Audio Pattern
Generator
Ancillary Data
Insertion P1
Video Pattern
Generator P1
(internal AES)
(internal AES)
aud_data
aud_ws
aud_de
aud_data
aud_ws
aud_de
AES
Stratix IV GX FPGA
Encrypted MegaCore Function
Ancillary Data
Insertion P0
Transceiver Dynamic
Reconfiguration
Control Logic
Waveform
Monitor
(WFM 700)
Audio Embed P0 SDI TX P0
SDI_OUT_2
SDI_OUT_1 AES_IN_1
AES_OUT_1
SDI_IN_1
Audio Extract
Audio Embed P1
AES Output Module
AES Input Module
SDI Duplex
RX
TX P1