High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

14.5.3.8Switch 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

RESERVED

RO

-

 

 

 

 

5

VLAN RnW

R/W

0b

 

This bit specifies a read(1) or a write(0) command.

 

 

 

 

 

 

4

PVIDnVLAN

R/W

0b

 

When set, this bit selects the Port VID table. When cleared, this bit selects

 

 

 

the VLAN table.

 

 

 

 

 

 

3:0

VLAN/Port

R/W

0h

 

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.

 

 

 

 

 

 

SMSC LAN9312

375

Revision 1.4 (08-19-08)

 

DATASHEET