AR8327-AL1A-R datasheet(172/394 Pages) ETC2

172 / 394 page

172 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

172 • June 2011

COMPANY CONFIDENTIAL

3.6.42

GOL_TRUNK_CTRL0

Address 0x0700

SFT&HW RST

Table 3-148 summarizes the GOL_TRUNK_CTRL0 Register 0

R/W

IGMP_LEARN_LIMIT_DROP_EN

1'b1: if IGMP GROUP ADDR is not in

ARL table or IGMP GROUP ADDR in

ARL but port member is not the source

port, packet should be dropped when

Learned MAC address counter is equal

to IGMP_JOIN_CNT_4

1'b0: if IGMP GROUP ADDR is not in

ARL table or IGMP GROUP ADDR in

ARL but port member is not the source

port, packet should be redirect to cpu

when Learned MAC address counter

is equal to IGMP_JOIN_CNT_4

25:16

R/W

IGMP_JOIN_CNT_6

HARDWARE JOIN IGMP. WHEN

JOIN NEW ENTRY OR NEW PORT TO

IGMP +1, LEAVE OR AGE -1

15:12

R/W

SA_LEARN_STATUS_6

IF LESS THAN 0X7, DYNAMIC CAN

BE FRESH TO SETTING VALUE AND

AGE

R/W

SA_LEARN_LIMIT_EN_6

1'b1: SA Learn Limit enable.

R/W

SA_LEARN_LIMIT_DROP_EN_6

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_4

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_4

9:0

R/W

SA_LEARN_CNT_6

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

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