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LAN9312 Datasheet(PDF) 387 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) 387 Page - SMSC Corporation

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
387
Revision 1.2 (04-08-08)
DATASHEET
14.5.3.18
Switch Engine Admit Only VLAN Register (SWE_ADMT_ONLY_VLAN)
This register is used to configure the per port ingress rule for allowing only VLAN tagged packets.
Register #:
1842h
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:3
RESERVED
RO
-
2:0
Admit Only VLAN
When set, untagged and priority tagged packets are filtered.
The VLAN Enable bit in the Switch Engine Global Ingress Configuration
Register (SWE_GLOBAL_INGRSS_CFG) needs to be set for these bits to
have an affect.
There is one enable bit per ingress port. Bits 2,1,0 correspond to switch
ports 2,1,0 respectively.
R/W
000b



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