9 host mac vlan1 tag register (hmac_vlan1), Host mac vlan1, Tag register (hmac_vlan1) – SMSC LAN9312 User Manual
Page 281: Shou, Section 14.3.9
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
281
Revision 1.4 (08-19-08)
DATASHEET
14.3.9
Host MAC VLAN1 Tag Register (HMAC_VLAN1)
This read/write register contains the VLAN tag field to identify VLAN1 frames. When a VLAN1 frame
is detected, the legal frame length is increased from 1518 bytes to 1522 bytes. Refer to
"Virtual Local Area Network (VLAN) Support," on page 113
for additional information.
Offset:
9h
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:16
RESERVED
RO
-
15:0
VLAN1 Tag Identifier (VTI1)
This field contains the VLAN Tag used to identify VLAN1 frames. This field
is compared with the 13th and 14th bytes of the incoming frames for VLAN1
frame detection.
Note:
If used, this register is typically set to the standard VLAN value of
8100h.
R/W
FFFFh