LAN9220_12 Datasheet, PDF (122/151 Pages) SMSC Corporation – 16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support

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