LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
Table 44. MII Status Register #1 (Address 1)
Bit
Name
100BASE-T4
Not Supported
Description
Type 1
Default
1 = PHY able to perform 100BASE-T4
0 = PHY not able to perform 100BASE-T4
1.15
RO
0
1 = PHY able to perform full-duplex 100BASE-X
0 = PHY not able to perform full-duplex 100BASE-X
1.14 100BASE-X Full-Duplex
1.13 100BASE-X Half-Duplex
RO
RO
1
1
1 = PHY able to perform half-duplex 100BASE-X
0 = PHY not able to perform half-duplex 100BASE-X
1 = PHY able to operate at 10 Mbps in full-duplex
mode
1.12 10 Mbps Full-Duplex
RO
RO
1
1
0 = PHY not able to operate at 10 Mbps full-duplex
mode
1 = PHY able to operate at 10 Mbps in half-duplex
mode
1.11 10 Mbps Half-Duplex
100BASE-T2 Full-
0 = PHY not able to operate at 10 Mbps in half-
duplex
1 = PHY able to perform full-duplex 100BASE-T2
0 = PHY not able to perform full-duplex 100BASE-T2
Duplex
Not Supported
1.10
RO
RO
0
0
100BASE-T2 Half-
Duplex
1 = PHY able to perform half-duplex 100BASE-T2
1.9
0 = PHY not able to perform half-duplex 100BASE-
T2
Not Supported
Extended Status
Reserved
1 = Extended status information in register 15
0 = No extended status information in register 15
1.8
1.7
RO
RO
0
0
1 = ignore when read
1 = PHY accepts management frames with
preamble suppressed
MF Preamble
Suppression
1.6
RO
0
0 = PHY will not accept management frames with
preamble suppressed
Auto-Negotiation
complete
1 = Auto-negotiation complete
1.5
1.4
1.3
1.2
1.1
1.0
RO
RO/LH
RO
0
0
1
0
0
1
0 = Auto-negotiation not complete
1 = Remote fault condition detected
0 = No remote fault condition detected
Remote Fault
1 = PHY is able to perform auto-negotiation
0 = PHY is not able to perform auto-negotiation
Auto-Negotiation Ability
Link Status
1 = Link is up
RO/LL
RO/LH
RO
0 = Link is down
1 = Jabber condition detected
Jabber Detect
0 = Jabber condition not detected
1 = Extended register capabilities
0 = Basic register capabilities
Extended Capability
1. RO = Read Only
LL = Latching Low
LH = Latching High
Datasheet
75
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
INTEL [ INTEL ]
