Chapter 41 gmac ethernet Interface



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Bit

Attr

Reset Value

Description

2

RW

0x0

HMC
Hash Multicast
When set, MAC performs destination address filtering of received multicast frames according to the hash table.
When reset, the MAC performs a perfect destination address filtering for multicast frames, that is, it compares the DA field with
the values programmed in DA registers.

1

RW

0x0

HUC
Hash Unicast
When set, MAC performs destination address filtering of unicast frames according to the hash table.
When reset, the MAC performs a perfect destination address filtering for unicast frames, that is, it compares the DA field with
the values programmed in DA registers.

0


RW


0x0


PR
Promiscuous Mode
When this bit is set, the Address Filter module passes all incoming frames regardless of its destination or source address. The SA/DA Filter Fails status bits of the Receive Status
Word will always be cleared when PR is set.


Only

T-chip
GMAC_HASH_TAB_HI


Address: Operational Base + offset (0x0008) Hash Table High Register


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