LAN9303 datasheet(86/366 Pages) SMSC

86 / 366 page

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Datasheet

Revision 1.3 (08-27-09)

SMSC LAN9303/LAN9303i

DATASHEET

Hybrid tagging is summarized in Figure 6.9.

The default VLAN ID and priority of each port may be configured via the following registers:

Buffer Manager Port 0 Default VLAN ID and Priority Register (BM_VLAN_0)

Buffer Manager Port 1 Default VLAN ID and Priority Register (BM_VLAN_1)

Buffer Manager Port 2 Default VLAN ID and Priority Register (BM_VLAN_2)

Figure 6.9 Hybrid Port Tagging and Un-tagging

Insert Tag

[egress_port]

Default VID

[ingress_port]

Un-tag Bit

Non-tagged

Add Tag

VID = Default VID

[ingress_port or egress port*]

Priority = ingress priority or

Default Priority

[egress_port]*

Send Packet Untouched

Priority Tagged

Default VID

[ingress_port]

Un-tag Bit

Strip Tag

Normal Tagged

Received VID

Un-tag Bit

Strip Tag

Change Tag

[egress_port]

Send Packet Untouched

Change Priority

[egress_port]

Modify Tag

VID = Default VID

[ingress_port or egress port*]

Priority = ingress priority or

Default Priority [egress_port]*

Change VLAN ID

[egress_port]

Change Priority

[egress_port]

Change Priority

[egress_port]

Modify Tag

VID = Default VID [ingress

port or egress_port*]

Priority = ingress priority or

Default Priority

[egress_port]*

Modify Tag

VID = Default VID [ingress

port or egress_port*]

Priority = Unchanged

Modify Tag

VID = Unchanged

Priority = ingress priority or

Default Priority

[egress_port]*

Special Tagged

Strip Tag

Modify Tag

VID = Default VID

[ingress_port or egress port*]

Priority = Unchanged

Receive Tag

Type

*choosen by VID /

Priority Select bit

*choosen by VID /

Priority Select bit

*choosen by VID /

Priority Select bit

*choosen by VID /

Priority Select bit

*choosen by VID /

Priority Select bit

*choosen by VID /

Priority Select bit

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