SMSC LAN9420i Manual De Usuario
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
SMSC LAN9420/LAN9420i
143
Revision 1.22 (09-25-08)
DATASHEET
4.5.8
Mode Control/Status
Index (In Decimal):
17
Size:
16 bits
BITS
DESCRIPTION
TYPE
DEFAULT
15:14
RESERVED
RO
-
13
EDPWRDOWN
Enable the Energy Detect Power-Down mode:
0=Energy Detect Power-Down is disabled
1=Energy Detect Power-Down is enabled
Enable the Energy Detect Power-Down mode:
0=Energy Detect Power-Down is disabled
1=Energy Detect Power-Down is enabled
R/W
0b
12:2
RESERVED
RO
-
1
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.
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.
RO
1b
0
RESERVED
R/W
0b