lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 388

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
14.5.3.19
BITS
31:6
5:4
3:2
1:0
RESERVED
Port State Port 2
These bits specify the spanning tree port states for Port 2.
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
Port State Port 1
These bits specify the spanning tree port states for Port 1.
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
Port State Port 0
These bits specify the spanning tree port states for Port 0(Host MAC).
00 = Forwarding
01 = Blocking
10 = Learning
11 = Listening
Note:
Switch Engine Port State Register (SWE_PORT_STATE)
This register is used to configure the per port spanning tree state.
Typically, the Host MAC is kept in the forwarding state, since it is
not a true network port.
Register #:
1843h
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DATASHEET
388
Size:
32 bits
TYPE
R/W
R/W
R/W
RO
SMSC LAN9312
DEFAULT
00b
00b
00b
Datasheet
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