SMSC LAN9312 - Manual (Page 390)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08) 390 SMSC LAN9312
DATASHEET
14.5.3.22 Switch Engine Ingress Port Type Register (SWE_INGRSS_PORT_TYP)
This register is used to enable the special tagging mode used to determine the destination port based
on the VLAN tag contents.
Register #: 1847h Size: 32 bits
BITS DESCRIPTION TYPE DEFAULT
31:6 RESERVED RO -
5:4 Ingress Port Type Port 2
A setting of 11b enables the usage of the VLAN tag to specify the packet
destination. All other values disable this feature. R/W 00b
3:2 Ingress Port Type Port 1
A setting of 11b enables the usage of the VLAN tag to specify the packet
destination. All other values disable this feature. R/W 00b
1:0 Ingress Port Type Port 0
A setting of 11b enables the usage of the VLAN tag to specify the packet
destination. All other values disable this feature. R/W 00b