IP175C-DS-R01 datasheet(72/111 Pages) ETC2

72 / 111 page

IP175C/IP175C LF/IP175CH/IP175CH LF

Data Sheet

72/111

Mar 09, 2007

IP175C/IP175CH-DS-R14

PHY

MII

ROM

R/W

Description

Default

21.15

18.7

R/W Port4 VLAN look up table

Port5 and port4 are in the same VLAN

1’b1

Port4 Class of service enable

1: enable, 0: disabled (default)

Packets with high priority tag from port4 are handled as high

priority packets.

Default value

TEST2=0

TEST2=1

P4EXT=1

P4EXT=0

21.14

18.6

R/W

Pin63 COS_EN (0)

Port4 high priority port enable

1: enable, 0: disabled (default)

Packets received from port4 are handled as high priority packets.

Default value

TEST2=0

TEST2=1

P4EXT=1

P4EXT=0

21.13

18.5

R/W

Pin 64 P4_HIGH (0) 0

Port4 VLAN look up table

The register defines the ports in the same VLAN as port4. The

bit 0~5 are corresponding to port 0~5.

1: a port is in the same VLAN as port4

0: a port is not in the same VLAN as port4

Bit8=1, port 0 and port4 are in the same VLAN;

Bit9=1, port 1 and port4 are in the same VLAN;

Bit10=1, port 2 and port4 are in the same VLAN;

Bit11=1, port 3 and port4 are in the same VLAN;

Bit12=1, don’t care;

Default value

Testmode38, 39

Testmode47

Others

21[12:8] 18[4:0]

R/W

5'b10001

5'b10000

5'b11111

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