Nec Network Controller uPD98502 Instrukcja Użytkownika Pobierz pdf (Strona 290)

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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

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

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

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