IP175C-DS-R02 datasheet(83/111 Pages) ETC2

83 / 111 page

IP175C/IP175C LF/IP175CH/IP175CH LF

Data Sheet

83/111

Mar 09, 2007

IP175C/IP175CH-DS-R14

Router control register 1

PHY

MII

ROM

R/W

Description

Default

WAN_PORTS[4:0].

WAN ports for router application

It is valid only if router_en is enabled.

Bit0

1: port 0 is a WAN port

0: port 0 is not a WAN port

Bit1

1: port 1 is a WAN port

0: port 1 is not a WAN port

Bit2

1: port 2 is a WAN port

0: port 2 is not a WAN port

Bit3

1: port 3 is a WAN port

0: port 3 is not a WAN port

9[12:8]

56[4:0]

R/W

Bit4

1: port 4 is a WAN port

0: port 4 is not a WAN port

5’h10

TAG_VLAN_EN. Enable tag VLAN function

1: enable tag VLAN function

0: disable tag VLAN function

Default value

Others

Testmode37

9.7

55.7

R/W

VID_IDX_SEL. VID index selection

Select 4 bits out of 12 bits VID as index of tag VLAN groups.

The 12 bits of VID can’t be all zeros; otherwise, it will be

handled as an un-tagged frame.

000: VID[3:0], 001: VID[4:1], 010: VID[5:2], 011: VID[6:3], 100:

VID[7:4], 101: VID[8:5], 110: VID[9:6], 111: VID[10:7]

An example of vid_idx_sel = 3’b000,

VLAN_0

VID[3:0] = 4’b0000

VLAN_1

VID[3:0] = 4’b0001

VLAN_2

VID[3:0] = 4’b0010

VLAN_3

VID[3:0] = 4’b0011

….

VLAN_e

VID[3:0] = 4’b1110

9[6:4]

55[6:4]

R/W

VLAN_f

VID[3:0] = 4’b1111

3’b000

ROUTER_EN.

Enable router function at MII port

1: SMART MAC enabled.

0: SMART MAC disabled.

Default value

Others

Testmode37

9.3

55.3

R/W

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