SMSC LAN9311 User Manual
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08)
308
SMSC LAN9311/LAN9311i
DATASHEET
14.4.2.13
Port x PHY Special Control/Status Register (PHY_SPECIAL_CONTROL_STATUS_x)
This read/write register is used to control and monitor various options of the Port x PHY.
Index (decimal):
31
Size:
16 bits
BITS
DESCRIPTION
TYPE
DEFAULT
15:13
RESERVED
RO
-
12
Autodone
This bit indicates the status of the Auto-Negotiation on the Port x PHY.
This bit indicates the status of the Auto-Negotiation on the Port x PHY.
0: Auto-Negotiation is not completed, is disabled, or is not active
1: Auto-Negotiation is completed
1: Auto-Negotiation is completed
RO
0b
11:5
RESERVED - Write as 0000010b, ignore on read
R/W
0000010b
4:2
Speed Indication
This field indicates the current Port x PHY speed configuration.
This field indicates the current Port x PHY speed configuration.
RO
000b
1:0
RESERVED
R/W
0b
STATE
DESCRIPTION
000
RESERVED
001
10BASE-T Half-duplex
010
100BASE-TX Half-duplex
011
RESERVED
100
RESERVED
101
10BASE-T Full-duplex
110
100BASE-TX Full-duplex
111
RESERVED