IP175G datasheet(59/69 Pages) ETC2

59 / 69 page

IP175G/GI/GH/GHI

Data Sheet

59 / 69

November 27, 2012

IP175Gx-DS-R01.3

6.26 VLAN Group Control Register

6.26.1 VLAN Classification

PHY

MII

R/W

Description

Default

0[15]

R/W

(SC)

VLAN_TABLE_CLR

Clear the contents of VLAN TABLE register

1: clear register

0: do nothing (default)

Self-clear after set and register cleared

1’b0

0[14]

RESERVED

0[13]

R/W

UNVID_MODE

Unknown-VID Mode

0: discard

1 : flood packet

1’b0

0[12:0]

RESERVED

1[15:8]

R/W

VLAN_CLS[7:0]

VLAN Classification associated with each port

Only active at tagged-based VLAN

0 : use VID to classify VLAN

-use VID to search VLAN table if tag packet

-use PVID to search VLAN table if untag packet

1 : use PVID to classify VLAN

-always use PVID to search VLAN table

8’h00

1[7:0]

TAG_VLAN_EN

Tag-based VLAN enable

8’h00

6.26.2 VLAN Ingress Rule

PHY

MII

R/W

Description

Default

2[15:14]

RESERVED

2[13]

R/W

VLAN_DROP_CFI

Drop incoming frame, if the CFI field is not equal to zero.

1’b0

RSVD_VID[2:0]

Reserved VID

Bit 0

The null VID. If set, frames with null VID (priority-tagged frame)

treat as untagged frames.

0: disable

1: enable (default)

Bit 1

VID=1 (default VID)

Replace default VID with PVID

0: disable (default)

1: enable

2[12:10] R/W

Bit 2

VID=FFF

Discard frame if the VID is the value FFF

0: disable(default)

1: enable

3’b001

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