High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
14.5.3.8
Switch Engine VLAN Command Register (SWE_VLAN_CMD)
Register #:
180Bh
Size:
32 bits
This register is used to read and write the VLAN or Port VID tables. A write to this address performs
the specified access.
For a read access, the Operation Pending bit in the Switch Engine VLAN Command Status Register
(SWE_VLAN_CMD_STS) indicates when the command is finished. The Switch Engine VLAN Read
Data Register (SWE_VLAN_RD_DATA) can then be read.
For a write access, the Switch Engine VLAN Write Data Register (SWE_VLAN_WR_DATA) register
should be written first. The Operation Pending bit in the Switch Engine VLAN Command Status
Register (SWE_VLAN_CMD_STS) indicates when the command is finished.
BITS
DESCRIPTION
TYPE
DEFAULT
31:6
5
RESERVED
VLAN RnW
RO
-
R/W
0b
This bit specifies a read(1) or a write(0) command.
4
PVIDnVLAN
R/W
R/W
0b
0h
When set, this bit selects the Port VID table. When cleared, this bit selects
the VLAN table.
3:0
VLAN/Port
This field specifies the VLAN(0-15) or port(0-2) to be read or written.
Note:
Values outside of the valid range may cause unexpected results.
Revision 1.2 (04-08-08)
376
SMSC LAN9312
DATASHEET
SMSC [ SMSC CORPORATION ]
