NEC Network Controller uPD98502 - Manual (Page 290)

CHAPTER 5 ETHERNET CONTROLLER
290 Preliminary User’s Manual S15543EJ1V0UM
5.2.19 En_AFR (Address Filtering Register)
Bits Field R/W Default Description
31:4 Reserved R/W 0 Reserved for future use. Write 0s.
3 PRO R/W 0 Promiscuous mode:
When this bit is set to a ‘1’, all receive packets are accepted. Please refer to
5.3.6.
2 PRM R/W 0 Accept Multicast:
When this bit is set to a ‘1’, all multicast packets are accepted. Please refer
to 5.3.6.
1 AMC R/W 0 Accept Multicast ( qualified ):
When this bit is set to a ‘1’, multicast packets that match the conditions using
hash table are accepted. Please refer to 5.3.6.
0 ABC R/W 0 Accept Broadcast:
When this bit is set to a ‘1’, all broadcast packets are accepted. Please refer
to 5.3.6.
5.2.20 En_HT1 (Hash Table Register 1)
Bits Field R/W Default Description
31:0 HT1 R/W 0 Hash table 1:
This register is used with the HT2 register as the hash table. It is used for
detection of qualified multicast packets. This register sets the upper 32 bits of
the hash table, HT (63:32). Please refer to 5.3.6.
5.2.21 En_HT2 (Hash Table Register 2)
Bits Field R/W Default Description
31:0 HT2 R/W 0 Hash table 2:
This register is used with the HT1 register as the hash table. It is used for
detection of qualified multicast packets. This register sets the lower 32 bits of
the hash table, HT (31:0). Please refer to 5.3.6.