LAN9420 Datasheet, PDF (132/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

4.4.10
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
VLAN2 Tag Register (VLAN2)
Offset:
00A4h
Size:
32 bits
This register contains the VLAN tag field to identify VLAN2 frames. For VLAN frames the legal frame
length is increased from 1518 bytes to 1522 bytes.
BITS
31:16
15:0
DESCRIPTION
RESERVED
VLAN2 Tag Identifier (VTI2)
This contains the VLAN Tag field to identify the VLAN2 frames. This field is
compared with the 13^th and 14^th bytes of the incoming frames for VLAN2
frame detection.
TYPE
RO
R/W
DEFAULT
-
FFFFh
Revision 1.6 (07-18-11)
132
DATASHEET
SMSC LAN9420/LAN9420i