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Figure 3-2
data interfaces at the client side:
1.
2.
The AV traffic interface in
block. The IEEE1722 is also an evolving standard which will specify the embedding of
audio/video data streams into Ethernet Packets. The 1722 headers within these packets
can optionally include presentation time stamp information. Contact Xilinx for further
system-level information.
Ethernet AVB Endpoint User Guide
UG492 September 21, 2010
illustrates that the Ethernet AVB Endpoint core supports the two main types of
The AV traffic interface is intended for the Quality of Service audio/video data.
Illustrated are a number of audio/video sources (for example, a DVD player), and a
number of audio/video sinks (for example, a TV set). The Ethernet AVB Endpoint
gives priority to the AV traffic interface over the legacy traffic interface, as dictated by
IEEE P802.1Qav 75% bandwidth restrictions.
The legacy traffic interface is maintained for best effort ethernet data: Ethernet as we
know it today (for example, the PC surfing the internet in
possible, priority is given to the AV traffic interface (as dictated by IEEE P802.1Qav
bandwidth restrictions) but a minimum of 25% of the total Ethernet bandwidth is
always available for legacy ethernet applications.
Figure 3-2
www.xilinx.com
Figure
is shown as interfacing to a 1722 Packet Manager
Typical Implementation
3-1). Wherever
33
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