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