Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
Revision 2.9 (03-01-12) 122 SMSC LAN9220
DATASHEET
5.5.7 Auto-negotiation Expansion
5.5.8 Mode Control/Status
Note 5.3 The default value of this bit will vary dependant on the current link state of the line.
Index (In Decimal): 6 Size: 16-bits
BITS DESCRIPTION TYPE DEFAULT
15:5 Reserved RO 0
4 Parallel Detection Fault.
1 = fault detected by parallel detection logic
0 = no fault detected by parallel detection logic
RO/LH 0
3 Link Partner Next Page Able.
1 = link partner has next page ability
0 = link partner does not have next page ability
RO 0
2 Next Page Able.
1 = local device has next page ability
0 = local device does not have next page ability
RO 0
1 Page Received.
1 = new page received
0 = new page not yet received
RO/LH 0
0 Link Partner Auto-Negotiation Able.
1 = link partner has auto-negotiation ability
0 = link partner does not have auto-negotiation ability
RO 0
Index (In Decimal): 17 Size: 16-bits
BITS DESCRIPTION TYPE DEFAULT
15-14 Reserved. Write as 0; ignore on read. RW 0
13 EDPWRDOWN. Enable the Energy Detect Power-Down mode:
0=Energy Detect Power-Down is disabled
1=Energy Detect Power-Down is enabled
RW 0
12-2 Reserved. Write as 0, ignore on read RW 0
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.
RO See Note 5.3
0 Reserved. Write as “0”. Ignore on read. RW 0