AR8327-AL1A-R datasheet(149/394 Pages) ETC2

номер детали	AR8327-AL1A-R

подробное описание детали	Seven-port Gigabit Ethernet Switch

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Atheros Communications, Inc.

AR8327/AR8327N Seven-port Gigabit Ethernet

Switch

•

149

3.6.27

PORT2_LOOKUP_CTRL

Address 0x0678

SFT&HW RST

Table 3-133 summarizes the PORT2_LOOKUP_CTRL Register

Table 3-133.

Port 2 Lookup Control Register

R/W

SA_LEARN_LIMIT_DROP_EN_1

1'b1: if SA is not in ARL table or SA in

ARL but port member is not the source

port, packet should be dropped when

Learned MAC address counter is equal

to SA_LEARN_CNT_1

1'b0: if SA is not in ARL table or SA in

ARL but port member is not the source

port, packet should be redirect to cpu

when Learned MAC address counter

is equal to SA_LEARN_CNT_1

9:0

R/W

SA_LEARN_CNT_1

The MAC address can be learned and

written to the ARL table — only

dynamic entry is counted

0: indicates no MAC limit number is 1

1: indicates the MAC limit number is 2

2: indicates the MAC limit number is 3

... and so on ... until:

1023: indicates the MAC limit is 1024

Bit

R/W

Inital

Value

Mnemonic

Description

Bit

R/W

Inital

Value

Mnemonic

Description

R/W

MULTICAST_DROP_EN_2

1'b1: Drop the multicast Packet from

this port. Don't drop IGMP/MLD join/

leave and Special DIP packet.

30:29

R/O

RESERVED

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