SMSC LAN9311 User Manual

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

SMSC LAN9311/LAN9311i

387

Revision 1.4 (08-19-08)

 

This register is used to configure the per port ingress rules.

Register #:

1841h

Size:

32 bits

31:6

RO

-

5:3

Enable Learning on Ingress
When set, source addresses are learned when a packet is received on the 
corresponding port and the corresponding Port State in the 

 is set to forwarding or learning.

There is one enable bit per ingress port. Bits 5,4,3 correspond to switch 
ports 2,1,0 respectively.

R/W

111b

2:0

Enable Membership Checking
When set, VLAN membership is checked when a packet is received on the 
corresponding port. 

The packet will be filtered if the ingress port is not a member of the VLAN 
(unless the Admit Non Member bit is set for the port in the 

For destination addresses that are found in the ALR table, the packet will be 
filtered if the egress port is not a member of the VLAN (for destination 
addresses that are not found in the ALR table only the ingress port is 
checked for membership).

The VLAN Enable bit in the 

 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