Intel 82550 Switch User Manual


 
10/100 Mbps Ethernet Controller Family Open Source Software Developer Manual 127
Physical Layer Interface
7.3.6 100BASE-TX Receive Error Frame Counter: Register 21
7.3.7 Receive Symbol Error Counter: Register 22
7.3.8 100BASE-TX Receive EOF Error Counter: Register 23
7.3.9 10BASE-T Receive EOF Error Counter: Register 24
7.3.10 10BASE-T Transmit Jabber Detect Counter: Register 25
Bit Name R / W Description Default
15:0 Receive Error Frame
RO
SC
This register contains a 16-bit counter for receive
error frames. It is incremented for frames with a
receive error condition (frames containing a symbol
error or frames with a premature end of frame).
When the counter is full, additional error frames are
not counted. This counter is self-clearing on read.
0
Bit Name R / W Description Default
15:0 Symbol Error
RO
SC
This register contains a 16-bit counter and
increments for each symbol error. The counter stop
counting additional symbol errors when it is full.
This counter is self-clearing on read.
0
Bit Name R / W Description Default
15:0 Premature End of Frame
RO
SC
This register contains a 16-bit counter and
increments for each premature end of frame event.
It stops counting additional premature end of frame
events when it is full. It is self-clearing on read.
0
Bit Name R / W Description Default
15:0 End of Frame
RO
SC
This register is a 16-bit counter that increments for
each end of frame error event. The counter stops
counting additional errors when it is full. It is self-
clearing on read.
0
Bit Name R / W Description Default
15:0 Jabber Detect
RO
SC
This register is a 16-bit counter that increments for
each jabber detection event. The counter stops
counting additional events when it is full. It is self-
clearing on read.
0