LU3X31T-T64 Datasheet, PDF (24/44 Pages) Agere Systems – LU3X31T-T64 Single-Port 3 10/100 Ethernet Transceiver TX

LU3X31T-T64 Single-Port 3 V
10/100 Ethernet Transceiver TX
Preliminary Data Sheet
July 2000
MII Registers (continued)
Table 14. Status Register (Register 1h) (continued)
Bit(s)
5
4
3
2
1
0
Name
Autonegotiation Complete
Remote Fault
Autonegotiation Ability
Link Status
Jabber Detect
Extended Capability
Description
1Autonegotiation process completed.
0Autonegotiation process not completed.
If autonegotiation is enabled, this bit indicates
whether the autonegotiation process has
been completed.
1Remote fault detected.
0Remote fault not detected.
This bit is latched to 1 if the RF bit in the auto-
negotiation link partner ability register (bit 13,
register address 05h) is set or the receive
channel meets the far-end fault indication
function criteria. It is unlatched when this reg-
ister is read.
1Capable of autonegotiation.
0Not capable of autonegotiation.
This bit defaults to 1, indicating that the
LU3X31T-T64 is capable of autonegotiation.
1Link is up.
0Link is down.
This bit reflects the current state of the link-
test-fail state machine. Loss of a valid link
causes a 0 latched into this bit. It remains 0
until this register is read by the serial man-
agement interface.
1Jabber condition detected.
0Jabber condition not detected.
During 10Base-T operation, this bit indicates
the occurrence of a jabber condition. It is
implemented with a latching function so that it
becomes set until it is cleared by a read.
1Extended register set.
0No extended register set.
This bit defaults to 1, indicating that the
LU3X31T-T64 implements extended regis-
ters.
R/W
RO
RO, LH
RO
RO,
LL
RO,
LH
RO
Default
0h
0h
1h
0h
0h
1h
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