82801CA Datasheet, PDF (256/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

LAN Controller Registers (B1:D8:F0)
Table 7-6. Statistical Counters (Continued)
ID
Counter
Description
28
Transmit Multiple Collisions
This counter contains the number of transmitted frames that
encountered more than one collision.
32 Transmit Total Collisions
This counter contains the total number of collisions that were
encountered while attempting to transmit. This count includes late
collisions and frames that encountered MAXCOL.
36 Receive Good Frames
This counter contains the number of frames that were received
properly from the link. It is updated only after the actual reception
from the link is completed and all the data bytes are stored in
memory.
40 Receive CRC Errors
This counter contains the number of aligned frames discarded
because of a CRC error. This counter is updated, if needed,
regardless of the Receive Unit state. The Receive CRC Errors
counter is mutually exclusive of the Receive Alignment Errors and
Receive Short Frame Errors counters.
44 Receive Alignment Errors
48 Receive Resource Errors
This counter contains the number of frames that are both misaligned
(for example, CRS de-asserts on a non-octal boundary) and contain
a CRC error. The counter is updated, if needed, regardless of the
Receive Unit state. The Receive Alignment Errors counter is
mutually exclusive of the Receive CRC Errors and Receive Short
Frame Errors counters.
This counter contains the number of good frames discarded due to
unavailability of resources. Frames intended for a host whose
Receive Unit is in the No Resources state fall into this category. If the
LAN Controller is configured to Save Bad Frames and the status of
the received frame indicates that it is a bad frame, the Receive
Resource Errors counter is not updated.
52 Receive Overrun Errors
This counter contains the number of frames known to be lost
because the local system bus was not available. If the traffic problem
persists for more than one frame, the frames that follow the first are
also lost; however, because there is no lost frame indicator, they are
not counted.
56
Receive Collision Detect
(CDT)
This counter contains the number of frames that encountered
collisions during frame reception.
This counter contains the number of received frames that are shorter
than the minimum frame length. The Receive Short Frame Errors
60 Receive Short Frame Errors counter is mutually exclusive to the Receive Alignment Errors and
Receive CRC Errors counters. A short frame will always increment
only the Receive Short Frame Errors counter.
This counter contains the number of Flow Control frames transmitted
64 Flow Control Transmit Pause by the LAN Controller. This count includes both the Xoff frames
transmitted and Xon (PAUSE(0)) frames transmitted.
This counter contains the number of Flow Control frames received by
68 Flow Control Receive Pause the LAN Controller. This count includes both the Xoff frames
received and Xon (PAUSE(0)) frames received.
72
Flow Control Receive
Unsupported
This counter contains the number of MAC Control frames received
by the LAN Controller that are not Flow Control Pause frames. These
frames are valid MAC control frames that have the predefined MAC
control Type value and a valid address but has an unsupported
opcode.
76 Receive TCO Frames
This counter contains the number of TCO packets received by the
LAN Controller.
78 Transmit TCO Frames
This counter contains the number of TCO packets transmitted.
256
Intel^® 82801CA ICH3-S Datasheet