Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
5.5.7
Auto-negotiation Expansion
Index (In Decimal):
6
Size:
16-bits
BITS
15:5
4
DESCRIPTION
TYPE
RO
DEFAULT
Reserved
Parallel Detection Fault.
0
0
RO/LH
1 = fault detected by parallel detection logic
0 = no fault detected by parallel detection logic
3
2
1
0
Link Partner Next Page Able.
RO
RO
0
0
0
0
1 = link partner has next page ability
0 = link partner does not have next page ability
Next Page Able.
1 = local device has next page ability
0 = local device does not have next page ability
Page Received.
1 = new page received
0 = new page not yet received
RO/LH
RO
Link Partner Auto-Negotiation Able.
1 = link partner has auto-negotiation ability
0 = link partner does not have auto-negotiation ability
5.5.8
Mode Control/Status
Index (In Decimal):
17
Size:
16-bits
BITS
15-14
13
DESCRIPTION
TYPE
RW
DEFAULT
Reserved. Write as 0; ignore on read.
0
0
EDPWRDOWN. Enable the Energy Detect Power-Down mode:
0=Energy Detect Power-Down is disabled
1=Energy Detect Power-Down is enabled
RW
12-2
1
Reserved. Write as 0, ignore on read
RW
RO
0
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.
See Note 5.3
0
Reserved. Write as “0”. Ignore on read.
RW
0
Note 5.3 The default value of this bit will vary dependant on the current link state of the line.
SMSC LAN9215i
115
Revision 1.93 (12-12-07)
DATASHEET
SMSC [ SMSC CORPORATION ]
