LAN9313 Datasheet, PDF (333/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.3.3.19 Switch Engine Port State Register (SWE_PORT_STATE)
Register #:
1843h
Size:
32 bits
This register is used to configure the per port spanning tree state.
BITS
DESCRIPTION
31:6 RESERVED
5:4 Port State Port 2
These bits specify the spanning tree port states for Port 2.
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
3:2 Port State Port 1
These bits specify the spanning tree port states for Port 1.
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
1:0 Port State Port 0
These bits specify the spanning tree port states for Port 0(External MII).
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
TYPE
RO
R/W
DEFAULT
-
00b
R/W
00b
R/W
00b
SMSC LAN9313/LAN9313i
333
DATASHEET
Revision 1.2 (04-08-08)