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Ethernet AVB Endpoint User Guide www.xilinx.com 71
UG492 July 23, 2010
Rx Legacy Traffic I/F
Partial Destination Address (DA) Match
The example illustrated in Figure 7-5 shows a single MAC Header Filter (one of the eight
provided) configured to filter on a partial Destination Address. In order for the frame to
obtain a match, the initial 29-bits (as used in this example) of the received frame must
exactly match the first 29-bits of the Match Pattern Register.
This functionality is useful for filtering across Multicast group Addresses.
X-Ref Target - Figure 7-5
Figure 7-5: Filtering of Frames with a Partial DA Match
rx_clk
legacy_rx_data[7:0]
legacy_rx_data_valid
rx_clk_enable
DA SA DATAL/T
VLAN
0xDA
0x01
0x02
0x03
0xFF
0xFF
0xFF
0x1F
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Match
against
partial
DA
Don’t-cares
Match Pattern Register
Match Enable Register