LAN9420 Datasheet, PDF (149/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
4.5.13 PHY Special Control/Status
Index (In Decimal): 31
Size:
16 bits
BITS
15:13
12
11:5
4:2
1:0
DESCRIPTION
RESERVED
Autodone
Auto-negotiation done indication:
0 = Auto-negotiation is not done or disabled (or not active)
1 = Auto-negotiation is done
RESERVED
Write as 0000010b, ignore on read.
Speed Indication
HCDSPEED value:
[001b] = 10Mbps half-duplex
[101b] = 10Mbps full-duplex
[010b] = 100BASE-TX half-duplex
[110b] = 100BASE-TX full-duplex
RESERVED
Note 4.6 Bit 6 of this register must be set to ‘1’ for write operations.
TYPE
RO
RO
DEFAULT
-
0
Note 4.6
-
RO
000b
RO
-
SMSC LAN9420/LAN9420i
149
DATASHEET
Revision 1.6 (07-18-11)