LAN9303 Datasheet, PDF (211/366 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
13.3.2.13 Port x PHY Special Control/Status Register (PHY_SPECIAL_CONTROL_STATUS_x)
Index (decimal): 31
Size:
16 bits
This read/write register is used to control and monitor various options of the Port x PHY.
BITS
DESCRIPTION
15:13
12
11:5
4:2
RESERVED
Autodone
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
RESERVED - Write as 0000010b, ignore on read
Speed Indication
This field indicates the current Port x speed configuration.
STATE
000
001
010
011
100
101
110
111
RESERVED
10BASE-T Half-duplex
100BASE-TX Half-duplex
RESERVED
RESERVED
10BASE-T Full-duplex
100BASE-TX Full-duplex
RESERVED
DESCRIPTION
1:0 RESERVED
TYPE
RO
RO
DEFAULT
-
0b
R/W
0000010b
RO
Note 13.67
R/W
0b
Note 13.67 Default value is 010b if any external MII mode is selected, else 000b.
SMSC LAN9303/LAN9303i
211
DATASHEET
Revision 1.3 (08-27-09)