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Software Developer’s Manual 273
Register Descriptions
PHY Link Health Register (82541xx and 82547GI/EI Only)
PLINK (19d; R)
FIFO Over/Underflow 7
1b = Over/Underflow Error.
0b = No FIFO Error.
RO,
LH
0b 0b
False Carrier 8
1b = False carrier.
0b = No false carrier.
RO,
LH
0b 0b
Symbol Error 9
1b = Symbol error.
0b = No symbol error.
RO,
LH
0b 0b
Link Status Changed 10
1b = Link status changed.
0b = Link status not changed.
RO,
LH
0b 0b
Auto-Negotiation
Completed
11
1b = Auto-Negotiation completed.
0b = Auto-Negotiation not completed.
RO,
LH
0b 0b
Page Received 12
1b = Page received.
0b = Page not received.
RO,
LH
0b 0b
Duplex Changed 13
1b = Duplex changed.
0b = Duplex not changed.
RO,
LH
0b 0b
Speed Changed 14
1b = Speed changed.
0b = Speed not changed.
RO,
LH
0b 0b
Auto-Negotiation
Error
15
1b = Auto-Negotiation Error.
0b = No Auto-Negotiation Error.
An error occurs if MASTER/SLAVE
does not resolve, parallel detect fault,
no common HCD, or link does not
validate after negotiation has
completed.
RO,
LH
0b 0b
Table 13-38. PHY Link Health Register Bit Description
Field Bit(s) Description Mode HW Rst SW Rst
Valid Channel A 0
The channel A DSP had converged to
incoming data.
RO 0b 0b
Valid Channel B 1
The channel B DSP had converged to
incoming data.
RO 0b 0b
Valid Channel C 2
The channel C DSP had converged to
incoming data.
RO 0b 0b
Valid Channel D 3
The channel D DSP had converged to
incoming data.
RO 0b 0b
Auto-Negotiation
Active
4
Auto-Negotiate is actively deciding
HCD.
RO 0b 0b
Reserved 5 Always read as 0b. RO 0b 0b
Table 13-37. PHY Interrupt Status Bit Description
Field Bit(s) Description Mode HW Rst SW Rst