Xilinx IP Ethernet AVB Endpoint v2.4 UG492 - Manual (Page 70)

70 www.xilinx.com Ethernet AVB Endpoint User Guide
UG492 September 21, 2010
Chapter 7: Ethernet AVB Endpoint Reception
Single MAC Header Filter Usage Examples
Full Destination Address (DA) Match
The example illustrated in Figure 7-4 shows a single MAC Header Filter (one of the eight
provided) configured to filter on a Destination Address. In order for the frame to obtain a
match, the initial 48-bits of the received frame must exactly match the first 48-bits of the
Match Pattern Register.
This example provides backwards compatibility with the Address Filters provided in the
Tri-Mode Ethernet MAC (which must be disabled).
X-Ref Target - Figure 7-4
Figure 7-4: Filtering of Frames with a Full DA Match
rx_clk
legacy_rx_data[7:0]
legacy_rx_data_valid
rx_clk_enable
DA SA DATA L/T VLAN
0xD
A
0x01 0x02 0x0
3
0x04 0x05
0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Match
against
DA
Don’t-cares
Match Pattern Register
Match Enable Register