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LAN9312 Datasheet(PDF) 282 Page - SMSC Corporation

Part # LAN9312
Description  High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
PDF  458 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LAN9312 Datasheet(HTML) 282 Page - SMSC Corporation

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.2 (04-08-08)
282
SMSC LAN9312
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 Section 9.3,
"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



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