AR8327-AL1A-R datasheet(131/394 Pages) ETC2

131 / 394 page

Atheros Communications, Inc.

AR8327/AR8327N Seven-port Gigabit Ethernet

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131

3.6.8

GLOBAL_FW_CTRL0

Address 0x0620

SFT&HW RST

Table 3-114 summerizes the GLOBAL_FW_CTRL0 Register

Table 3-114.

Global Forward Control Register

26:24

R/W

3’b0

IGMP_JOIN_PRI

Use for igmp packet learn in arl table, define

DA priority (atu[59:57)

23:20

R/W

4’hF

IGMP_JOIN_STATUS

Use for igmp packet learn in arl table, define

the status (atu[67:64])

R/W

1’b1

AGE_EN

Enable age operation.

1'b1: lookup module can age the address in the

address table.

18:16

R/W

LOOP_CHECK_TIMER

3'h0: disable loop back check

3'h1: 1ms

3'h2: 10ms

3'h3: 100ms

3'h4: 500ms

3'h5~7: reserved

15:0

R/W

‘h2B

AGE_TIME

Address Table Age Timer. These bits determine

the time that each entry remains valid in the

address table, since last accessed. For the time

is times 7s, maximum age time is about 10,000

minutes. The default value is 'h2B for five

minutes. If AGE_EN is set to 1'b1, these bits

shouldn't be set to zero.

Bit

R/W

Inital

Value

Mnemonic

Description

Bit

R/W

Inital

Value

Mnemonic

Description

31:28

R/O

RESERVED

27:26

R/W

ARP_FORWARD_ACT

0:REDIRECT TO CPU

1:COPY TO CPU

2:FORWARD

25:24

R/W

SP_NOT_FOUND_ACT

For IP packet

0:FORWARD

1:DROP

2:TO CPU

23:22

R/W

ARP_SP_NOT_FOUND_A

For ARP packet

0:FORWARD

1:DROP

2:TO CPU

21:20

R/W

HASH_MODE

Hash mode for Mac address. 0: crc_16, 1:

crc_10

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