Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 43
Revision 1.4
Register Description (Continued)
Address Name Description Mode
(10)
Default
Register 1h – Basic Status
1.15 100Base-T4
1 = T4 capable
0 = Not T4 capable
RO 0
1.14
100Base-TX
Full-Duplex
1 = Capable of 100Mbps full-duplex
0 = Not capable of 100Mbps full-duplex
RO 1
1.13
100Base-TX
Half-Duplex
1 = Capable of 100Mbps half-duplex
0 = Not capable of 100Mbps half-duplex
RO 1
1.12
10Base-T
Full-Duplex
1 = Capable of 10Mbps full-duplex
0 = Not capable of 10Mbps full-duplex
RO 1
1.11
10Base-T
Half-Duplex
1 = Capable of 10Mbps half-duplex
0 = Not capable of 10Mbps half-duplex
RO 1
1.10:7 Reserved Reserved RO 000_0
1.6 No Preamble
1 = Preamble suppression
0 = Normal preamble
RO 1
1.5
Auto-
Negotiation
Complete
1 = Auto-negotiation process completed
0 = Auto-negotiation process not completed
RO 0
1.4 Remote Fault
1 = Remote fault
0 = No remote fault
RO/LH 0
1.3
Auto-
Negotiation
Ability
1 = Can perform auto-negotiation
0 = Cannot perform auto-negotiation
RO 1
1.2 Link Status
1 = Link is up
0 = Link is down
RO/LL 0
1.1 Jabber Detect
1 = Jabber detected
0 = Jabber not detected (default is low)
RO/LH 0
1.0
Extended
Capability
1 = Supports extended capability registers RO 1
Register 2h – PHY Identifier 1
2.15:0
PHY ID
Number
Assigned to the 3rd through 18th bits of the
Organizationally Unique Identifier (OUI).
KENDIN Communication’s OUI is 0010A1
(hex).
RO 0022h
Register 3h – PHY Identifier 2
3.15:10
PHY ID
Number
Assigned to the 19th through 24th bits of the
Organizationally Unique Identifier (OUI).
KENDIN Communication’s OUI is 0010A1
(hex).
RO 0001_01
3.9:4 Model Number Six-bit manufacturer’s model number RO 01_0110
3.3:0
Revision
Number
Four-bit manufacturer’s revision number RO Indicates silicon revision