SMSC LAN9312 - Manual (Page 372)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08) 372 SMSC LAN9312
DATASHEET
18:16 Port
These bits indicate the port(s) associated with this MAC address. When bit
18 is cleared, a single port is selected. When bit 18 is set, multiple ports are
selected. RO 000b
15:0 MAC Address
These field contains the last 16 bits of the ALR entry. They correspond to
the last 16 bits of the MAC address. Bit 15 holds the MSB of the last byte
(the last bit on the wire). The first 32 bits of the MAC address are located
in the
Switch Engine ALR Read Data 0 Register (SWE_ALR_RD_DAT_0) .
RO 0000h
BITS DESCRIPTION TYPE DEFAULT
VALUE ASSOCIATED PORT(S)
000 Port 0(Host MAC)
001 Port 1
010 Port 2
011 RESERVED
100 Port 0(Host MAC) and Port 1
101 Port 0(Host MAC) and Port 2
110 Port 1 and Port 2
111 Port 0(Host MAC), Port 1, and Port 2