Ethernet AVB Endpoint Reception - 9.0 English

Tri-Mode Ethernet MAC LogiCORE IP Product Guide (PG051)

Document ID
PG051
Release Date
2023-11-07
Version
9.0 English

When the AVB Endpoint is present, the optional frame filter is always present with three dedicated filters for the identification of AVB specific frames. As shown in Figure 1, the received data from an AVB network can be of three types:

  • Precise Timing Protocol (PTP) Packets – Routed to the dedicated hardware RX PTP Packet Buffer which can be accessed by the software drivers. PTP packets are identified by searching for a specific MAC Destination Address and Type field.
  • AV Traffic – Routed to the RX AV Traffic Interface of the core. These packets are identified by searching for MAC packets containing a MAC VLAN field with one of two possible configurable VLAN PCP and VID combinations.
  • Legacy Traffic – Routed to the RX Legacy Traffic Interface of the core. All packet types which are not identified as PTP or AV Traffic are considered legacy traffic.