SMSC LAN9311 User Manual
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08)
378
SMSC LAN9311/LAN9311i
DATASHEET
14.5.3.9
Switch Engine VLAN Write Data Register (SWE_VLAN_WR_DATA)
This register is used write the VLAN or Port VID tables.
Register #:
180Ch
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:18
RESERVED
RO
-
17:0
Port Default VID and Priority
When the port VID table is selected (PVIDnVLAN=1 of the
When the port VID table is selected (PVIDnVLAN=1 of the
), bits 11:0 of this field specify
the default VID for the port and bits 14:12 specify the default priority. All
other bits of this field are reserved. These bits are used when a packet is
received without a VLAN tag or with a NULL VLAN ID. By default, the VID
and priority for all three ports is 0.
other bits of this field are reserved. These bits are used when a packet is
received without a VLAN tag or with a NULL VLAN ID. By default, the VID
and priority for all three ports is 0.
Note:
Values of 0 and FFFh should not be used since they are special
VLAN IDs per the IEEE 802.3Q specification.
VLAN IDs per the IEEE 802.3Q specification.
VLAN Data
When the VLAN table is selected (PVIDnVLAN=0 of the
When the VLAN table is selected (PVIDnVLAN=0 of the
), the bits form the VLAN
table entry as follows:
R/W
0b
BITS
DESCRIPTION
DEFAULT
17
Member Port 2
Indicates the configuration of Port 2 for this VLAN entry.
Indicates the configuration of Port 2 for this VLAN entry.
1 = Member
- Packets with a VID that matches this entry
are allowed on ingress. The port is a member of the
broadcast domain on egress.
broadcast domain on egress.
0 = Not a Member
- Packets with a VID that matches this
entry are filtered on ingress unless the Admit Non Member
bit in the
bit in the
is set for this port. The port is
not a member of the broadcast domain on egress.
0b
16
Un-Tag Port 2
When this bit is set, packets received on Port 2 with a VID
that matches this entry will have their tag removed when re-
transmitted by egress ports that are designated as Hybrid
ports via the
When this bit is set, packets received on Port 2 with a VID
that matches this entry will have their tag removed when re-
transmitted by egress ports that are designated as Hybrid
ports via the
0b
15
Member Port 1
See description for Member Port 2.
See description for Member Port 2.
0b
14
Un-Tag Port 1
See description for Un-Tag Port 2.
See description for Un-Tag Port 2.
0b
13
Member Port 0 (Host MAC)
See description for Member Port 2.
See description for Member Port 2.
0b
12
Un-Tag Port 0 (Host MAC)
See description for Un-Tag Port 2.
See description for Un-Tag Port 2.
0b
11:0
VID
These bits specify the VLAN ID associated with this VLAN
entry.
These bits specify the VLAN ID associated with this VLAN
entry.
To disable a VLAN entry, a value of 0 should be used.
Note:
A value of 0 is considered a NULL VLAN and
should not normally be used other than to
disable a VLAN entry.
should not normally be used other than to
disable a VLAN entry.
Note:
A value of 3FFh is considered reserved by IEEE
802.1Q and should not be used.
802.1Q and should not be used.
000h