Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Datasheet

 

 

 

 

 

4.5.8

Mode Control/Status

 

 

 

 

 

Index (In Decimal): 17

Size:

16 bits

 

 

 

 

 

 

 

BITS

DESCRIPTION

 

 

TYPE

DEFAULT

 

 

 

 

 

 

15:14

RESERVED

 

 

RO

-

 

 

 

 

 

 

13

EDPWRDOWN

 

 

R/W

0b

 

Enable the Energy Detect Power-Down mode:

 

 

 

 

 

0=Energy Detect Power-Down is disabled

 

 

 

 

 

1=Energy Detect Power-Down is enabled

 

 

 

 

 

 

 

 

 

 

12:2

RESERVED

 

 

RO

-

 

 

 

 

 

 

1

ENERGYON

 

 

RO

1b

 

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.

 

 

 

 

 

 

 

 

 

 

0

RESERVED

 

 

R/W

0b

 

 

 

 

 

 

SMSC LAN9420/LAN9420i

143

Revision 1.22 (09-25-08)

 

DATASHEET