SMSC LAN9312 - Manual (Page 297)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312 297 Revision 1.4 (08-19-08)
DATASHEET
Note 14.57 The Port 1 & 2 PHY’s support only IEEE 802.3.
6 10BASE-T Full Duplex
This bit indicates the link partner PHY 10BASE-T full duplex capability.
0: 10BASE-T full duplex ability not supported
1: 10BASE-T full duplex ability supported
RO 0b
5 10BASE-T Half Duplex
This bit indicates the link partner PHY 10BASE-T half duplex capability.
0: 10BASE-T half duplex ability not supported
1: 10BASE-T half duplex ability supported
RO 0b
4:0 Selector Field
This field identifies the type of message being sent by Auto-Negotiation.
00001: IEEE 802.3
RO 00001b
Note 14.57
BITS DESCRIPTION TYPE DEFAULT