The UHD-SDI audio-video loopback example
design is built using the UHD-SDI TX and RX subsystems along with the UHD-SDI Audio IP core.
Video data generated by the video test pattern generator is passed to the UHD-SDI TX
Subsystem. The UHD-SDI TX Subsystem outputs SDI stream after insertion of the ST352 payload
(if any) and passed to the UHD-SDI Audio (Embed) IP for audio data insertion. To do so, bit 18
(use_anc_in) of sdi_tx_ctrl[31:0] has to be set to
1’b1 in the UHD-SDI TX Subsystem. Audio data is generated by the audio test
pattern generator. See Audio Test Pattern Generator IP to for more
information on the audio test pattern generator. Native SDI video stream with audio insertion
is passed to the UHD-SDI TX IP for transmission. The UHD-SDI RX Subsystem receives video and
audio and passes the native video stream to the UHD-SDI Audio (Extract) IP. Audio is extracted
by UHD-SDI Audio IP. The UHD-SDI TX Subsystem, UHD-SDI RX Subsystem, UHD-SDI Audio (Embed) IP,
and UHD-SDI Audio (Extract) IP are configured through ports and does not include the AXI4-Lite interface for this example design. The example design application
software runs on an
MicroBlaze™
processor.
Figure 1. KCU116 Audio-Video Loopback Example Design
Note: The MicroBlaze processor is not shown
in the preceding figure for simplicity.