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AX88796ALF Arkusz danych(PDF) 23 Page - ASIX Electronics Corporation |
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AX88796ALF Arkusz danych(HTML) 23 Page - ASIX Electronics Corporation |
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23 / 68 page ![]() 23 AX88796ALF 3-in-1 Local Bus Fast Ethernet Controller Copyright © 2006-2013 ASIX Electronics Corporation. All rights reserved. 4.1.3 Broadcast Address Match Filter The Broadcast check logic compares the Destination Address Field (first 6 bytes of the received packet) to all 1’s, which is the values are “FF FF FF FF FF FF FF” in Hex format. If any bit of the six bytes does not equal to 1’s, the Protocol Control Logic rejects the packet. 4.1.4 Aggregate Address Filter with Receive Configuration Setup The final address filter decision depends on the destination address types, identified by the above 3 address match filters, and the setup of parameters of Receive Configuration Register. Definitions of address match filter result are as following: Signal Value Description Phy =1 Unicast Address Match =0 Unicast Address not Match Mul =1 Multicast Address Match =0 Multicast Address not Match Bro =1 Broadcast Address Match =0 Broadcast Address not Match AGG =1 Aggregate Address Match =0 Aggregate Address not Match The meaning of AB, AM and PRO signals, please refer to “Receive Configuration Register” Aggregate Address Filter function will be: AGG Bro AB /Bro /Mul PRO /Bro Mul AM Phy AND Logic AND Logic AND Logic OR Logic |
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