LAN9420 Datasheet, PDF (144/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

4.5.8
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Mode Control/Status
Index (In Decimal): 17
Size:
16 bits
BITS
15:14
13
12:2
1
0
DESCRIPTION
RESERVED
EDPWRDOWN
Enable the Energy Detect Power-Down mode:
0=Energy Detect Power-Down is disabled
1=Energy Detect Power-Down is enabled
RESERVED
ENERGYON
Indicates whether energy is detected. This bit goes to a “0” if no valid
energy is detected within 256ms. Reset to “1” by hardware reset, unaffected
by SW reset.
RESERVED
TYPE
RO
R/W
RO
RO
R/W
DEFAULT
-
0b
-
1b
0b
Revision 1.6 (07-18-11)
144
DATASHEET
SMSC LAN9420/LAN9420i