82551IT Datasheet, PDF (73/102 Pages) Intel Corporation – Fast Ethernet PCI Controller

Networking Silicon — 82551IT
9.3.5
Register 20: 100BASE-TX Receive Disconnect Counter
Table 35. Register 20: 100BASE-TX Receive Disconnect Counter
Bit(s)
Name
Description
15:0 Disconnect Event This field contains a 16-bit counter that increments for
each disconnect event. The counter freezes when full
and self-clears on read
Default
--
R/W
RO
SC
9.3.6
Register 21: 100BASE-TX Receive Error Frame Counter
Table 36. Register 21: 100BASE-TX Receive Error Frame Counter
Bit(s)
Name
15:0 Receive Error
Frame
Description
This field contains a 16-bit counter that increments
once per frame for any receive error condition (such
as a symbol error or premature end of frame) in that
frame. The counter freezes when full and self-clears
on read.
Default
--
R/W
RO
SC
9.3.7
Register 22: Receive Symbol Error Counter
Table 37. Register 22: Receive Symbol Error Counter
Bit(s)
Name
Description
15:0 Symbol Error
Counter
This field contains a 16-bit counter that increments for
each symbol error. The counter freezes when full and
self-clears on read.
In a frame with a bad symbol, each sequential six bad
symbols count as one.
Default
--
R/W
RO
SC
9.3.8
Register 23: 100BASE-TX Receive Premature End of Frame Error
Counter
Table 38. Register 23: 100BASE-TX Receive Premature End of Frame Error Counter
Bit(s)
Name
Description
Default R/W
15:0 Premature End of This field contains a 16-bit counter that increments for
Frame
each premature end of frame event. The counter
freezes when full and self-clears on read.
--
RO
SC
9.3.9
Register 24: 10BASE-T Receive End of Frame Error Counter
Table 39. Register 24: 10BASE-T Receive End of Frame Error Counter
Bit(s)
Name
15:0 End of Frame
Counter
Description
This is a 16-bit counter that increments for each end
of frame error event. The counter freezes when full
and self-clears on read.
Default
--
R/W
RO
SC
Datasheet
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